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From: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>
To: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	David Hunt <david.hunt@intel.com>,
	Bruce Richardson <bruce.richardson@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"stable@dpdk.org" <stable@dpdk.org>, nd <nd@arm.com>,
	David Marchand <david.marchand@redhat.com>,
	"\"'Lukasz Wojciechowski'\"," <l.wojciechow@partner.samsung.com>
Subject: Re: [dpdk-dev] [PATCH v4 2/8] test/distributor: synchronize lcores statistics
Date: Fri, 16 Oct 2020 14:58:39 +0200
Message-ID: <572a9ba1-3141-ff11-b283-74a81c7ddc89@partner.samsung.com> (raw)
In-Reply-To: <b00c47ce-4429-370b-2a4f-b685db9e8da0@partner.samsung.com>


W dniu 16.10.2020 o 14:43, Lukasz Wojciechowski pisze:
> Hi Honnappa,
>
> Thank you for your answer.
> In the current v7 version I followed your advise and used RELAXED memory model.
> And it works without any issues. I guess after fixing other issues found since v4 the distributor works more stable.
> I didn't have time to rearrange all tests in the way I proposed, but I guess if they work like this it's not a top priority.
>
> Can you give an ack on the series? I believe David Marchand is waiting for your opinion to process it.
I'm sorry I didn't see your other comments. I'll try to fix them them today.
>
> Best regards
> Lukasz
>
> W dniu 16.10.2020 o 07:43, Honnappa Nagarahalli pisze:
>> <snip>
>>
>>> Hi Honnappa,
>>>
>>> Many thanks for the review!
>>>
>>> I'll write my answers here not inline as it would be easier to read them in one
>>> place, I think.
>>> So first of all I agree with you in 2 things:
>>> 1) all uses of statistics must be atomic and lack of that caused most of the
>>> problems
>>> 2) it would be better to replace barrier and memset in
>>> clear_packet_count() with atomic stores as you suggested
>>>
>>> So I will apply both of above.
>>>
>>> However I wasn't not fully convinced on changing acquire/release to relaxed.
>>> It wood be perfectly ok if it would look like in this Herb Sutter's example:
>>> https://youtu.be/KeLBd2[]  EJLOU?t=4170
>>> But in his case the counters are cleared before worker threads start and are
>>> printout after they are completed.
>>>
>>> In case of the dpdk distributor tests both worker and main cores are running
>>> at the same time. In the sanity_test, the statistics are cleared and verified
>>> few times for different hashes of packages. The worker cores are not
>>> stopped at this time and they continue their loops in handle procedure.
>>> Verification made in main core is an exchange of data as the current statistics
>>> indicate how the test will result.
>> Agree. The key point we have to note is that the data that is exchanged between the two threads is already atomic (handled_packets is atomic).
>>
>>> So as I wasn't convinced, I run some tests with both both relaxed and
>>> acquire/release modes and they both fail :( The failures caused by statistics
>>> errors to number of tests ratio for
>>> 200000 tests was:
>>> for relaxed: 0,000790562
>>> for acq/rel: 0,000091321
>>>
>>>
>>> That's why I'm going to modify tests in such way, that they would:
>>> 1) clear statistics
>>> 2) launch worker threads
>>> 3) run test
>>> 4) wait for workers procedures to complete
>>> 5) check stats, verify results and print them out
>>>
>>> This way worker main core will use (clear or verify) stats only when there are
>>> no worker threads. This would make things simpler and allowing to focus on
>>> testing the distributor not tests. And of course relaxed mode would be
>>> enough!
>> Agree, this would be the only way to ensure that the main thread sees the correct statistics (just like in the video)
>>
>>> Best regards
>>> Lukasz
>>>
>>>
>>> W dniu 29.09.2020 o 07:49, Honnappa Nagarahalli pisze:
>>>> <snip>
>>>>
>>>>> Statistics of handled packets are cleared and read on main lcore,
>>>>> while they are increased in workers handlers on different lcores.
>>>>>
>>>>> Without synchronization occasionally showed invalid values.
>>>>> This patch uses atomic acquire/release mechanisms to synchronize.
>>>> In general, load-acquire and store-release memory orderings are required
>>> while synchronizing data (that cannot be updated atomically) between
>>> threads. In the situation, making counters atomic is enough.
>>>>> Fixes: c3eabff124e6 ("distributor: add unit tests")
>>>>> Cc: bruce.richardson@intel.com
>>>>> Cc: stable@dpdk.org
>>>>>
>>>>> Signed-off-by: Lukasz Wojciechowski
>>>>> <l.wojciechow@partner.samsung.com>
>>>>> Acked-by: David Hunt <david.hunt@intel.com>
>>>>> ---
>>>>>     app/test/test_distributor.c | 39 ++++++++++++++++++++++++-----------
>>> --
>>>>>     1 file changed, 26 insertions(+), 13 deletions(-)
>>>>>
>>>>> diff --git a/app/test/test_distributor.c
>>>>> b/app/test/test_distributor.c index
>>>>> 35b25463a..0e49e3714 100644
>>>>> --- a/app/test/test_distributor.c
>>>>> +++ b/app/test/test_distributor.c
>>>>> @@ -43,7 +43,8 @@ total_packet_count(void)  {
>>>>>     	unsigned i, count = 0;
>>>>>     	for (i = 0; i < worker_idx; i++)
>>>>> -		count += worker_stats[i].handled_packets;
>>>>> +		count +=
>>>>> __atomic_load_n(&worker_stats[i].handled_packets,
>>>>> +				__ATOMIC_ACQUIRE);
>>>> RELAXED memory order is sufficient. For ex: the worker threads are not
>>> 'releasing' any data that is not atomically updated to the main thread.
>>>>>     	return count;
>>>>>     }
>>>>>
>>>>> @@ -52,6 +53,7 @@ static inline void
>>>>>     clear_packet_count(void)
>>>>>     {
>>>>>     	memset(&worker_stats, 0, sizeof(worker_stats));
>>>>> +	rte_atomic_thread_fence(__ATOMIC_RELEASE);
>>>> Ideally, the counters should be set to 0 atomically rather than using a
>>> memset.
>>>>>     }
>>>>>
>>>>>     /* this is the basic worker function for sanity test @@ -72,13
>>>>> +74,13 @@ handle_work(void *arg)
>>>>>     	num = rte_distributor_get_pkt(db, id, buf, buf, num);
>>>>>     	while (!quit) {
>>>>>     		__atomic_fetch_add(&worker_stats[id].handled_packets,
>>>>> num,
>>>>> -				__ATOMIC_RELAXED);
>>>>> +				__ATOMIC_ACQ_REL);
>>>> Using the __ATOMIC_ACQ_REL order does not mean anything to the main
>>> thread. The main thread might still see the updates from different threads in
>>> different order.
>>>>>     		count += num;
>>>>>     		num = rte_distributor_get_pkt(db, id,
>>>>>     				buf, buf, num);
>>>>>     	}
>>>>>     	__atomic_fetch_add(&worker_stats[id].handled_packets, num,
>>>>> -			__ATOMIC_RELAXED);
>>>>> +			__ATOMIC_ACQ_REL);
>>>> Same here, do not see why this change is required.
>>>>
>>>>>     	count += num;
>>>>>     	rte_distributor_return_pkt(db, id, buf, num);
>>>>>     	return 0;
>>>>> @@ -134,7 +136,8 @@ sanity_test(struct worker_params *wp, struct
>>>>> rte_mempool *p)
>>>>>
>>>>>     	for (i = 0; i < rte_lcore_count() - 1; i++)
>>>>>     		printf("Worker %u handled %u packets\n", i,
>>>>> -				worker_stats[i].handled_packets);
>>>>> +			__atomic_load_n(&worker_stats[i].handled_packets,
>>>>> +					__ATOMIC_ACQUIRE));
>>>> __ATOMIC_RELAXED is enough.
>>>>
>>>>>     	printf("Sanity test with all zero hashes done.\n");
>>>>>
>>>>>     	/* pick two flows and check they go correctly */ @@ -159,7 +162,9
>>>>> @@ sanity_test(struct worker_params *wp, struct rte_mempool *p)
>>>>>
>>>>>     		for (i = 0; i < rte_lcore_count() - 1; i++)
>>>>>     			printf("Worker %u handled %u packets\n", i,
>>>>> -					worker_stats[i].handled_packets);
>>>>> +				__atomic_load_n(
>>>>> +					&worker_stats[i].handled_packets,
>>>>> +					__ATOMIC_ACQUIRE));
>>>> __ATOMIC_RELAXED is enough
>>>>
>>>>>     		printf("Sanity test with two hash values done\n");
>>>>>     	}
>>>>>
>>>>> @@ -185,7 +190,8 @@ sanity_test(struct worker_params *wp, struct
>>>>> rte_mempool *p)
>>>>>
>>>>>     	for (i = 0; i < rte_lcore_count() - 1; i++)
>>>>>     		printf("Worker %u handled %u packets\n", i,
>>>>> -				worker_stats[i].handled_packets);
>>>>> +			__atomic_load_n(&worker_stats[i].handled_packets,
>>>>> +					__ATOMIC_ACQUIRE));
>>>> __ATOMIC_RELAXED is enough
>>>>
>>>>>     	printf("Sanity test with non-zero hashes done\n");
>>>>>
>>>>>     	rte_mempool_put_bulk(p, (void *)bufs, BURST); @@ -280,15
>>>>> +286,17 @@ handle_work_with_free_mbufs(void *arg)
>>>>>     		buf[i] = NULL;
>>>>>     	num = rte_distributor_get_pkt(d, id, buf, buf, num);
>>>>>     	while (!quit) {
>>>>> -		worker_stats[id].handled_packets += num;
>>>>>     		count += num;
>>>>> +		__atomic_fetch_add(&worker_stats[id].handled_packets,
>>>>> num,
>>>>> +				__ATOMIC_ACQ_REL);
>>>> IMO, the problem would be the non-atomic update of the statistics. So,
>>>> __ATOMIC_RELAXED is enough
>>>>
>>>>>     		for (i = 0; i < num; i++)
>>>>>     			rte_pktmbuf_free(buf[i]);
>>>>>     		num = rte_distributor_get_pkt(d,
>>>>>     				id, buf, buf, num);
>>>>>     	}
>>>>> -	worker_stats[id].handled_packets += num;
>>>>>     	count += num;
>>>>> +	__atomic_fetch_add(&worker_stats[id].handled_packets, num,
>>>>> +			__ATOMIC_ACQ_REL);
>>>> Same here, the problem is non-atomic update of the statistics,
>>> __ATOMIC_RELAXED is enough.
>>>> Similarly, for changes below, __ATOMIC_RELAXED is enough.
>>>>
>>>>>     	rte_distributor_return_pkt(d, id, buf, num);
>>>>>     	return 0;
>>>>>     }
>>>>> @@ -363,8 +371,9 @@ handle_work_for_shutdown_test(void *arg)
>>>>>     	/* wait for quit single globally, or for worker zero, wait
>>>>>     	 * for zero_quit */
>>>>>     	while (!quit && !(id == zero_id && zero_quit)) {
>>>>> -		worker_stats[id].handled_packets += num;
>>>>>     		count += num;
>>>>> +		__atomic_fetch_add(&worker_stats[id].handled_packets,
>>>>> num,
>>>>> +				__ATOMIC_ACQ_REL);
>>>>>     		for (i = 0; i < num; i++)
>>>>>     			rte_pktmbuf_free(buf[i]);
>>>>>     		num = rte_distributor_get_pkt(d,
>>>>> @@ -379,10 +388,11 @@ handle_work_for_shutdown_test(void *arg)
>>>>>
>>>>>     		total += num;
>>>>>     	}
>>>>> -	worker_stats[id].handled_packets += num;
>>>>>     	count += num;
>>>>>     	returned = rte_distributor_return_pkt(d, id, buf, num);
>>>>>
>>>>> +	__atomic_fetch_add(&worker_stats[id].handled_packets, num,
>>>>> +			__ATOMIC_ACQ_REL);
>>>>>     	if (id == zero_id) {
>>>>>     		/* for worker zero, allow it to restart to pick up last packet
>>>>>     		 * when all workers are shutting down.
>>>>> @@ -394,10 +404,11 @@ handle_work_for_shutdown_test(void *arg)
>>>>>     				id, buf, buf, num);
>>>>>
>>>>>     		while (!quit) {
>>>>> -			worker_stats[id].handled_packets += num;
>>>>>     			count += num;
>>>>>     			rte_pktmbuf_free(pkt);
>>>>>     			num = rte_distributor_get_pkt(d, id, buf, buf, num);
>>>>> +
>>>>> 	__atomic_fetch_add(&worker_stats[id].handled_packets,
>>>>> +					num, __ATOMIC_ACQ_REL);
>>>>>     		}
>>>>>     		returned = rte_distributor_return_pkt(d,
>>>>>     				id, buf, num);
>>>>> @@ -461,7 +472,8 @@ sanity_test_with_worker_shutdown(struct
>>>>> worker_params *wp,
>>>>>
>>>>>     	for (i = 0; i < rte_lcore_count() - 1; i++)
>>>>>     		printf("Worker %u handled %u packets\n", i,
>>>>> -				worker_stats[i].handled_packets);
>>>>> +			__atomic_load_n(&worker_stats[i].handled_packets,
>>>>> +					__ATOMIC_ACQUIRE));
>>>>>
>>>>>     	if (total_packet_count() != BURST * 2) {
>>>>>     		printf("Line %d: Error, not all packets flushed. "
>>>>> @@ -514,7 +526,8 @@ test_flush_with_worker_shutdown(struct
>>>>> worker_params *wp,
>>>>>     	zero_quit = 0;
>>>>>     	for (i = 0; i < rte_lcore_count() - 1; i++)
>>>>>     		printf("Worker %u handled %u packets\n", i,
>>>>> -				worker_stats[i].handled_packets);
>>>>> +			__atomic_load_n(&worker_stats[i].handled_packets,
>>>>> +					__ATOMIC_ACQUIRE));
>>>>>
>>>>>     	if (total_packet_count() != BURST) {
>>>>>     		printf("Line %d: Error, not all packets flushed. "
>>>>> --
>>>>> 2.17.1
>>> --
>>> Lukasz Wojciechowski
>>> Principal Software Engineer
>>>
>>> Samsung R&D Institute Poland
>>> Samsung Electronics
>>> Office +48 22 377 88 25
>>> l.wojciechow@partner.samsung.com

-- 
Lukasz Wojciechowski
Principal Software Engineer

Samsung R&D Institute Poland
Samsung Electronics
Office +48 22 377 88 25
l.wojciechow@partner.samsung.com


  reply index

Thread overview: 164+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200915193456eucas1p1a38a0bb16e9c81ed587f916aeb8c41e5@eucas1p1.samsung.com>
2020-09-15 19:34 ` [dpdk-dev] [PATCH v1 0/6] fix distributor synchronization issues Lukasz Wojciechowski
     [not found]   ` <CGME20200915193457eucas1p2adbe25c41a0e4ef16c029e7bff104503@eucas1p2.samsung.com>
2020-09-15 19:34     ` [dpdk-dev] [PATCH v1 1/6] app/test: fix deadlock in distributor test Lukasz Wojciechowski
2020-09-17 11:21       ` David Hunt
2020-09-17 14:01         ` Lukasz Wojciechowski
     [not found]   ` <CGME20200915193457eucas1p2321d28b6abf69f244cd7c1e61ed0620e@eucas1p2.samsung.com>
2020-09-15 19:34     ` [dpdk-dev] [PATCH v1 2/6] app/test: synchronize statistics between lcores Lukasz Wojciechowski
2020-09-17 11:50       ` David Hunt
     [not found]   ` <CGME20200915193458eucas1p1d9308e63063eda28f96eedba3a361a2b@eucas1p1.samsung.com>
2020-09-15 19:34     ` [dpdk-dev] [PATCH v1 3/6] app/test: fix freeing mbufs in distributor tests Lukasz Wojciechowski
2020-09-17 12:34       ` David Hunt
2020-09-22 12:42       ` David Marchand
2020-09-23  1:55         ` Lukasz Wojciechowski
     [not found]   ` <CGME20200915193459eucas1p19f5d1cbea87d7dc3bbd2638cdb96a31b@eucas1p1.samsung.com>
2020-09-15 19:34     ` [dpdk-dev] [PATCH v1 4/6] app/test: collect return mbufs in distributor test Lukasz Wojciechowski
2020-09-17 12:37       ` David Hunt
     [not found]   ` <CGME20200915193500eucas1p2b079e1dcfd2d54e01a5630609b82b370@eucas1p2.samsung.com>
2020-09-15 19:34     ` [dpdk-dev] [PATCH v1 5/6] distributor: fix missing handshake synchronization Lukasz Wojciechowski
2020-09-17 13:22       ` David Hunt
     [not found]   ` <CGME20200915193501eucas1p2333f0b08077c06ba04b89ce192072f9a@eucas1p2.samsung.com>
2020-09-15 19:34     ` [dpdk-dev] [PATCH v1 6/6] distributor: fix handshake deadlock Lukasz Wojciechowski
2020-09-17 13:28       ` David Hunt
     [not found]   ` <CGME20200923014717eucas1p18699ad84d206e786a84f20dab9b65c33@eucas1p1.samsung.com>
2020-09-23  1:47     ` [dpdk-dev] [PATCH v2 0/8] fix distributor synchronization issues Lukasz Wojciechowski
     [not found]       ` <CGME20200923014718eucas1p11fdcd774fef7b9e077e14e01c9f951d5@eucas1p1.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 1/8] app/test: fix deadlock in distributor test Lukasz Wojciechowski
     [not found]       ` <CGME20200923014719eucas1p2f26000109e86a649796e902c30e58bf0@eucas1p2.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 2/8] app/test: synchronize statistics between lcores Lukasz Wojciechowski
2020-09-23  4:30           ` Honnappa Nagarahalli
2020-09-23 12:47             ` Lukasz Wojciechowski
     [not found]       ` <CGME20200923014719eucas1p165c419cff4f265cff8add8cc818210ff@eucas1p1.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 3/8] app/test: fix freeing mbufs in distributor tests Lukasz Wojciechowski
     [not found]       ` <CGME20200923014720eucas1p2bd5887c96c24839f364810a1bbe840da@eucas1p2.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 4/8] app/test: collect return mbufs in distributor test Lukasz Wojciechowski
     [not found]       ` <CGME20200923014721eucas1p1d22ac56c9b9e4fb49ac73d72d51a7a23@eucas1p1.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 5/8] distributor: fix missing handshake synchronization Lukasz Wojciechowski
     [not found]       ` <CGME20200923014722eucas1p2c2ef63759f4b800c1b5a80094e07e384@eucas1p2.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 6/8] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]       ` <CGME20200923014723eucas1p2a7c7210a55289b3739faff4f5ed72e30@eucas1p2.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 7/8] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
     [not found]       ` <CGME20200923014724eucas1p13d3c0428a15bea26def7a4343251e4e4@eucas1p1.samsung.com>
2020-09-23  1:47         ` [dpdk-dev] [PATCH v2 8/8] distributor: align API documentation with code Lukasz Wojciechowski
2020-09-23  8:46       ` [dpdk-dev] [PATCH v2 0/8] fix distributor synchronization issues David Hunt
2020-09-23 14:03         ` Lukasz Wojciechowski
2020-09-23  8:47       ` David Hunt
     [not found]       ` <CGME20200923132544eucas1p29470697e7cb6621cc65e6e676c3e5d69@eucas1p2.samsung.com>
2020-09-23 13:25         ` [dpdk-dev] [PATCH v3 " Lukasz Wojciechowski
     [not found]           ` <CGME20200923132545eucas1p10db12d91121c9afdbab338bb60c8ed37@eucas1p1.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 1/8] app/test: fix deadlock in distributor test Lukasz Wojciechowski
     [not found]           ` <CGME20200923132546eucas1p212b6eede801514b544d82d41f5b7e4b8@eucas1p2.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 2/8] app/test: synchronize statistics between lcores Lukasz Wojciechowski
     [not found]           ` <CGME20200923132547eucas1p130620b0d5f3080a7a57234838a992e0e@eucas1p1.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 3/8] app/test: fix freeing mbufs in distributor tests Lukasz Wojciechowski
     [not found]           ` <CGME20200923132548eucas1p2a54328cddb79ae5e876eb104217d585f@eucas1p2.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 4/8] app/test: collect return mbufs in distributor test Lukasz Wojciechowski
     [not found]           ` <CGME20200923132549eucas1p29fc391c3f236fa704ff800774ab851f0@eucas1p2.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 5/8] distributor: fix missing handshake synchronization Lukasz Wojciechowski
     [not found]           ` <CGME20200923132550eucas1p2ce158dd81ccc04abcab4130d8cb391f4@eucas1p2.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 6/8] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]           ` <CGME20200923132550eucas1p1ce21011562d0a00cccfd4ae3f0be4ff9@eucas1p1.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 7/8] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
     [not found]           ` <CGME20200923132551eucas1p214a5f78c61e891c5e7b6cddc038d0e2e@eucas1p2.samsung.com>
2020-09-23 13:25             ` [dpdk-dev] [PATCH v3 8/8] distributor: align API documentation with code Lukasz Wojciechowski
2020-09-25 12:31           ` [dpdk-dev] [PATCH v3 0/8] fix distributor synchronization issues David Marchand
2020-09-25 22:42             ` Lukasz Wojciechowski
     [not found]           ` <CGME20200925224216eucas1p28b73b1b56c6f3372db4fcaba0890522f@eucas1p2.samsung.com>
2020-09-25 22:42             ` [dpdk-dev] [PATCH v4 " Lukasz Wojciechowski
     [not found]               ` <CGME20200925224216eucas1p1e8e1d0ecab4bbbf6e43b117c1d210649@eucas1p1.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 1/8] test/distributor: fix deadlock with freezed worker Lukasz Wojciechowski
2020-09-27 23:34                   ` Honnappa Nagarahalli
2020-09-30 20:22                     ` Lukasz Wojciechowski
     [not found]               ` <CGME20200925224217eucas1p1bb5f73109b4aeed8f2badf311fa8dfb5@eucas1p1.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 2/8] test/distributor: synchronize lcores statistics Lukasz Wojciechowski
2020-09-29  5:49                   ` Honnappa Nagarahalli
2020-10-02 11:25                     ` Lukasz Wojciechowski
2020-10-08 20:47                       ` Lukasz Wojciechowski
2020-10-16  5:43                       ` Honnappa Nagarahalli
2020-10-16 12:43                         ` Lukasz Wojciechowski
2020-10-16 12:58                           ` Lukasz Wojciechowski [this message]
2020-10-16 15:42                             ` Honnappa Nagarahalli
2020-10-17  3:34                               ` Lukasz Wojciechowski
     [not found]               ` <CGME20200925224218eucas1p2383ff0ebdaee18b581f5f731476f05ab@eucas1p2.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 3/8] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
     [not found]               ` <CGME20200925224218eucas1p221c1af87b0e4547547106503cd336afd@eucas1p2.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 4/8] test/distributor: fix freeing mbufs Lukasz Wojciechowski
     [not found]               ` <CGME20200925224219eucas1p2d61447fef421573d653d2376423ecce0@eucas1p2.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 5/8] test/distributor: collect return mbufs Lukasz Wojciechowski
     [not found]               ` <CGME20200925224220eucas1p1a44e99a1d7750d37d5aefa61f329209b@eucas1p1.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 6/8] distributor: fix missing handshake synchronization Lukasz Wojciechowski
     [not found]               ` <CGME20200925224221eucas1p151297834da32a0f7cfdffc120f57ab3a@eucas1p1.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 7/8] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]               ` <CGME20200925224222eucas1p1b10891c21bfef6784777526af4443dde@eucas1p1.samsung.com>
2020-09-25 22:42                 ` [dpdk-dev] [PATCH v4 8/8] distributor: align API documentation with code Lukasz Wojciechowski
     [not found]               ` <CGME20201008052336eucas1p16b5b1600683e33ddba30479b7fd62ce6@eucas1p1.samsung.com>
2020-10-08  5:23                 ` [dpdk-dev] [PATCH v5 00/15] fix distributor synchronization issues Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052337eucas1p22b9e89987caf151ba8771442385fec16@eucas1p2.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 01/15] distributor: fix missing handshake synchronization Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052338eucas1p2d26a8705b17d07fd24056f0aeaf3504e@eucas1p2.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 02/15] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052339eucas1p1a4e571cc3f5a277badff9d352ad7da8e@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 03/15] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
2020-10-08  8:13                       ` David Hunt
     [not found]                   ` <CGME20201008052339eucas1p15697f457b8b96809d04f737e041af08a@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 04/15] distributor: handle worker shutdown in burst mode Lukasz Wojciechowski
2020-10-08 14:26                       ` David Hunt
2020-10-08 21:07                         ` Lukasz Wojciechowski
2020-10-09 12:13                           ` David Hunt
2020-10-09 20:43                             ` Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052340eucas1p1451f2bf1b6475067491753274547b837@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 05/15] test/distributor: fix shutdown of busy worker Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052341eucas1p2379b186206e5bf481e3c680de46e5c16@eucas1p2.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 06/15] test/distributor: synchronize lcores statistics Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052342eucas1p2376e75d9ac38f5054ca393b0ef7e663d@eucas1p2.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 07/15] distributor: fix return pkt calls in single mode Lukasz Wojciechowski
2020-10-08 14:32                       ` David Hunt
     [not found]                   ` <CGME20201008052342eucas1p19e8474360d1f7dacd4164b3e21e54290@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 08/15] test/distributor: fix freeing mbufs Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052343eucas1p1649655353d6c76cdf6320a04e8d43f32@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 09/15] test/distributor: collect return mbufs Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052344eucas1p270b04ad2c4346e6beb5f5ef844827085@eucas1p2.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 10/15] distributor: align API documentation with code Lukasz Wojciechowski
2020-10-08 14:35                       ` David Hunt
     [not found]                   ` <CGME20201008052345eucas1p29e14456610d4ed48c09b8cf7bd338e18@eucas1p2.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 11/15] test/distributor: replace delays with spin locks Lukasz Wojciechowski
2020-10-09 12:23                       ` David Hunt
     [not found]                   ` <CGME20201008052345eucas1p17a05f99986032885a0316d3419cdea2d@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 12/15] distributor: fix scalar matching Lukasz Wojciechowski
2020-10-09 12:31                       ` David Hunt
2020-10-09 12:35                         ` David Hunt
2020-10-09 21:02                           ` Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052346eucas1p15b04bf84cafc2ba52bbe063f57d08c39@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 13/15] test/distributor: add test with packets marking Lukasz Wojciechowski
2020-10-09 12:50                       ` David Hunt
2020-10-09 21:12                         ` Lukasz Wojciechowski
     [not found]                   ` <CGME20201008052347eucas1p1570239523104a0d609c928d8b149ebdf@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 14/15] distributor: fix flushing in flight packets Lukasz Wojciechowski
2020-10-09 13:10                       ` David Hunt
     [not found]                   ` <CGME20201008052348eucas1p183cfbe10d10bd98c7a63a34af98b80df@eucas1p1.samsung.com>
2020-10-08  5:23                     ` [dpdk-dev] [PATCH v5 15/15] distributor: fix clearing returns buffer Lukasz Wojciechowski
2020-10-09 13:12                       ` David Hunt
2020-10-08  7:30                   ` [dpdk-dev] [PATCH v5 00/15] fix distributor synchronization issues David Marchand
2020-10-08 21:16                     ` Lukasz Wojciechowski
2020-10-09 12:53                       ` David Marchand
2020-10-09 21:41                         ` Lukasz Wojciechowski
2020-10-09 23:25                           ` Lukasz Wojciechowski
2020-10-10  8:12                             ` David Marchand
2020-10-10  8:15                               ` David Marchand
2020-10-10 16:27                               ` Lukasz Wojciechowski
     [not found]                   ` <CGME20201009220207eucas1p1d83b63b4f0e05cbaf0a58f7f01ec0052@eucas1p1.samsung.com>
2020-10-09 22:01                     ` [dpdk-dev] [PATCH v6 " Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220229eucas1p17ad627f31005ed506c5422b93ad6d112@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 01/15] distributor: fix missing handshake synchronization Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220231eucas1p217c48d880aaa7f15e4351f92eede01b6@eucas1p2.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 02/15] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220232eucas1p201d3b81574b7ec42ff3fb18f4bbfcbea@eucas1p2.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 03/15] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220233eucas1p285b4d01402c0c8bcfd018673afeb05eb@eucas1p2.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 04/15] distributor: handle worker shutdown in burst mode Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220235eucas1p17ded8b5bb42f2fef159a5715ef6fbca7@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 05/15] test/distributor: fix shutdown of busy worker Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220236eucas1p192e34b3bbf00681ec90de296abd1a6b5@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 06/15] test/distributor: synchronize lcores statistics Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220238eucas1p2e86c0026064774e5b494c16c7fd384ec@eucas1p2.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 07/15] distributor: fix return pkt calls in single mode Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220246eucas1p1283b16f1f54c572b5952ca9334d667da@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 08/15] test/distributor: fix freeing mbufs Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220247eucas1p1a783663e586127cbfd406a61e13c40eb@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 09/15] test/distributor: collect return mbufs Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220248eucas1p156346857c1aab2340ccd7549abdce966@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 10/15] distributor: align API documentation with code Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220250eucas1p18587737171d82a9bde52c767ee8ed24b@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 11/15] test/distributor: replace delays with spin locks Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220253eucas1p14078ab159186d2c26e787b3b2ed68062@eucas1p1.samsung.com>
2020-10-09 22:01                         ` [dpdk-dev] [PATCH v6 12/15] distributor: fix scalar matching Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220253eucas1p2c0e27c3a495cb9603102b2cbf8a8f706@eucas1p2.samsung.com>
2020-10-09 22:02                         ` [dpdk-dev] [PATCH v6 13/15] test/distributor: add test with packets marking Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220254eucas1p187bad9a066f00ee4c05ec6ca7fb4decd@eucas1p1.samsung.com>
2020-10-09 22:02                         ` [dpdk-dev] [PATCH v6 14/15] distributor: fix flushing in flight packets Lukasz Wojciechowski
     [not found]                       ` <CGME20201009220255eucas1p1e7a286684291e586ebb22cb0a2117e50@eucas1p1.samsung.com>
2020-10-09 22:02                         ` [dpdk-dev] [PATCH v6 15/15] distributor: fix clearing returns buffer Lukasz Wojciechowski
     [not found]                       ` <CGME20201010160513eucas1p1fbacf1f82c40d65aef40634f245c4206@eucas1p1.samsung.com>
2020-10-10 16:04                         ` [dpdk-dev] [PATCH v7 00/16] fix distributor synchronization issues Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160515eucas1p18003d01d8217cdf04be3cba2e32f969f@eucas1p1.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 01/16] distributor: fix missing handshake synchronization Lukasz Wojciechowski
2020-10-15 23:47                               ` Honnappa Nagarahalli
2020-10-17  3:13                                 ` Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160517eucas1p2141c0bb6097a05aa99ed8efdf5fb7512@eucas1p2.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 02/16] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160523eucas1p19287c5bf3b7e2818c730ae23f514853f@eucas1p1.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 03/16] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160525eucas1p2314810086b9dd1c8cddf90eabe800363@eucas1p2.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 04/16] distributor: handle worker shutdown in burst mode Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160527eucas1p2f55cb0fc45bf3647234cdfa251e542fc@eucas1p2.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 05/16] test/distributor: fix shutdown of busy worker Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160528eucas1p2b9b8189aef51c18d116f97ccebf5719c@eucas1p2.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 06/16] test/distributor: synchronize lcores statistics Lukasz Wojciechowski
2020-10-16  5:13                               ` Honnappa Nagarahalli
2020-10-17  3:23                                 ` Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160530eucas1p15baba6fba44a7caee8b4b0ff778a961d@eucas1p1.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 07/16] distributor: fix return pkt calls in single mode Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160536eucas1p2b20e729b90d66eddd03618e98d38c179@eucas1p2.samsung.com>
2020-10-10 16:04                             ` [dpdk-dev] [PATCH v7 08/16] test/distributor: fix freeing mbufs Lukasz Wojciechowski
2020-10-16  5:12                               ` Honnappa Nagarahalli
2020-10-17  3:28                                 ` Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160538eucas1p19298667f236209cfeaa4745f9bb3aae6@eucas1p1.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 09/16] test/distributor: collect return mbufs Lukasz Wojciechowski
2020-10-16  4:53                               ` Honnappa Nagarahalli
2020-10-16  5:13                               ` Honnappa Nagarahalli
2020-10-17  3:29                                 ` Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160540eucas1p2d942834b4749672c433a37a8fe520bd1@eucas1p2.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 10/16] distributor: align API documentation with code Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160541eucas1p11d079bad2b7500f9ab927463e1eeac04@eucas1p1.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 11/16] test/distributor: replace delays with spin locks Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160548eucas1p193e4f234da1005b91f22a8e7cb1d3226@eucas1p1.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 12/16] distributor: fix scalar matching Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160549eucas1p1eba7cb8e4e9ba9200e9cd498137848c3@eucas1p1.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 13/16] test/distributor: add test with packets marking Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160551eucas1p171642aa2d451e501287915824bfe7c24@eucas1p1.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 14/16] distributor: fix flushing in flight packets Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160552eucas1p2efdec872c4aea2b63af29c84e9a5b52d@eucas1p2.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 15/16] distributor: fix clearing returns buffer Lukasz Wojciechowski
     [not found]                           ` <CGME20201010160605eucas1p1ff6b4cb5065e1355cb8eeafd4696abaf@eucas1p1.samsung.com>
2020-10-10 16:05                             ` [dpdk-dev] [PATCH v7 16/16] test/distributor: ensure all packets are delivered Lukasz Wojciechowski
2020-10-12  7:46                               ` David Hunt
     [not found]                           ` <CGME20201017030709eucas1p11285f14ee4fe2e79ad5791b0e9b9c653@eucas1p1.samsung.com>
2020-10-17  3:06                             ` [dpdk-dev] [PATCH v8 00/17] fix distributor synchronization issues Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030710eucas1p17fb6129fd3414b4b6b70dcd593c01a40@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 01/17] distributor: fix missing handshake synchronization Lukasz Wojciechowski
2020-10-17 21:05                                   ` Honnappa Nagarahalli
     [not found]                               ` <CGME20201017030711eucas1p1b70f13e4636ad7c3e842b48726ae1845@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 02/17] distributor: fix handshake deadlock Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030711eucas1p14855de461cd9d6a4fd3e4bac031b53e5@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 03/17] distributor: do not use oldpkt when not needed Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030712eucas1p1ce19efadc60ed2888dc615cbb2549bdc@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 04/17] distributor: handle worker shutdown in burst mode Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030713eucas1p1173c2178e647be341db2da29078c8d5d@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 05/17] test/distributor: fix shutdown of busy worker Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030714eucas1p292bd71a85ea6d638256c21d279c8d533@eucas1p2.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 06/17] distributor: fix return pkt calls in single mode Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030715eucas1p2366d1f0ce16a219b21542bb26e4588a6@eucas1p2.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 07/17] test/distributor: fix freeing mbufs Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030716eucas1p2911112ee3c9e0a3f3dd9a811cbafe77b@eucas1p2.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 08/17] test/distributor: synchronize lcores statistics Lukasz Wojciechowski
2020-10-17 21:11                                   ` Honnappa Nagarahalli
     [not found]                               ` <CGME20201017030717eucas1p1ae327494575f851af4bdf77f3e8c83ae@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 09/17] test/distributor: collect return mbufs Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030718eucas1p256e1f934af12af2a6b07640c9de7a766@eucas1p2.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 10/17] distributor: align API documentation with code Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030719eucas1p13b13db1fbc3715e19e81bb4be4635b7d@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 11/17] test/distributor: replace delays with spin locks Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030720eucas1p1fe683996638c3692cae530e67271b79b@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 12/17] distributor: fix scalar matching Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030720eucas1p1359382fafa661abb1ba82fa65e19562c@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 13/17] test/distributor: add test with packets marking Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030721eucas1p2a1032e6c78d99f903ea539e49f057a83@eucas1p2.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 14/17] distributor: fix flushing in flight packets Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030721eucas1p1f3307c1e4e69c65186ad8f2fb18f5f74@eucas1p1.samsung.com>
2020-10-17  3:06                                 ` [dpdk-dev] [PATCH v8 15/17] distributor: fix clearing returns buffer Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030722eucas1p107dc8d3eb2d9ef620065deba31cf08ed@eucas1p1.samsung.com>
2020-10-17  3:07                                 ` [dpdk-dev] [PATCH v8 16/17] test/distributor: ensure all packets are delivered Lukasz Wojciechowski
     [not found]                               ` <CGME20201017030723eucas1p16904cabfd94afa4fe751c072077e09ae@eucas1p1.samsung.com>
2020-10-17  3:07                                 ` [dpdk-dev] [PATCH v8 17/17] test/distributor: fix quitting workers Lukasz Wojciechowski
2020-10-17 21:15                                   ` Honnappa Nagarahalli
2020-10-19  8:32                               ` [dpdk-dev] [PATCH v8 00/17] fix distributor synchronization issues David Marchand

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DPDK patches and discussions

Archives are clonable:
	git clone --mirror http://inbox.dpdk.org/dev/0 dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ http://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev


Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/ public-inbox