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From: Akhil Goyal <akhil.goyal@nxp.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>
Cc: "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v5 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued
Date: Wed, 2 Jan 2019 13:50:34 +0000	[thread overview]
Message-ID: <b57e49e2-b26a-eff7-1657-4b2f9a9528b8@nxp.com> (raw)
In-Reply-To: <2601191342CEEE43887BDE71AB977258010D8C046D@IRSMSX106.ger.corp.intel.com>



On 1/2/2019 7:13 PM, Ananyev, Konstantin wrote:
>
>> On 12/28/2018 9:03 PM, Konstantin Ananyev wrote:
>>> In some cases crypto-ops could never be dequeued from the crypto-device.
>>> The easiest way to reproduce:
>>> start ipsec-secgw with crypto-dev and send to it less then 32 packets.
>>> none packets will be forwarded.
>>> Reason for that is that the application does dequeue() from crypto-queues
>>> only when new packets arrive.
>>> This patch makes sure it calls dequeue() on a regular basis.
>>>
>>> Fixes: c64278c0c18b ("examples/ipsec-secgw: rework processing loop")
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
>>> Acked-by: Radu Nicolau <radu.nicolau@intel.com>
>>> ---
>>>    examples/ipsec-secgw/ipsec-secgw.c | 136 ++++++++++++++++++++++++-----
>>>    examples/ipsec-secgw/ipsec.c       |  60 ++++++++-----
>>>    examples/ipsec-secgw/ipsec.h       |  11 +++
>>>    3 files changed, 165 insertions(+), 42 deletions(-)
>> [snip]
>>> +
>>>    /* main processing loop */
>>>    static int32_t
>>>    main_loop(__attribute__((unused)) void *dummy)
>>> @@ -866,7 +958,8 @@ main_loop(__attribute__((unused)) void *dummy)
>>>    		diff_tsc = cur_tsc - prev_tsc;
>>>
>>>    		if (unlikely(diff_tsc > drain_tsc)) {
>>> -			drain_buffers(qconf);
>>> +			drain_tx_buffers(qconf);
>>> +			drain_crypto_buffers(qconf);
>>>    			prev_tsc = cur_tsc;
>>>    		}
>>>
>>> @@ -880,6 +973,9 @@ main_loop(__attribute__((unused)) void *dummy)
>>>    			if (nb_rx > 0)
>>>    				process_pkts(qconf, pkts, nb_rx, portid);
>>>    		}
>>> +
>>> +		drain_inbound_crypto_queues(qconf, &qconf->inbound);
>>> +		drain_outbound_crypto_queues(qconf, &qconf->outbound);
>> drain_inbound_crypto_queues and drain_outbound_crypto_queues should be called based on diff_tsc.
>> moving these two lines above after  drain_crypto_buffers will improve the performance drop caused due to this patch.
> Thanks, good to know.
> To make what you suggest above to work properly with non-legacy mode ('-l') extra changes
> would be needed...
What changes do you see?
> Do you have an idea - what exactly causing a slowdown?
> Just an extra function calls (drain_inbound_crypto_queues/ drain_outbound_crypto_queues)?
> Or is that because we do dequeue() from crypto PMD more often then before?
I have not profiled it, but it should be because of more dequeues. On a 
single call to dequeue, a burst of packets get dequeued. but now there 
will be a lot more dequeues which have lesser packets than the burst 
size which will deteriorate the performance as it would be wasting the 
dequeue cycles.

This patch is causing around 5% drop out of the 10% that I mentioned in 
the other mail.
With the change that I suggested, I am almost able to get back those 5%.
> Konstantin
>   
>


  reply	other threads:[~2019-01-02 13:50 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-22 18:49 [dpdk-dev] [PATCH 0/7] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 1/7] examples/ipsec-secgw: avoid to request unused TX offloads Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 0/7] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 1/7] examples/ipsec-secgw: avoid to request unused TX offloads Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 0/8] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-12-07 10:01       ` Radu Nicolau
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 0/9] " Konstantin Ananyev
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 1/9] examples/ipsec-secgw: avoid to request unused TX offloads Konstantin Ananyev
2018-12-21 13:57         ` Akhil Goyal
2018-12-21 15:58           ` Ananyev, Konstantin
2018-12-24  9:45             ` Akhil Goyal
2018-12-24 10:19               ` Ananyev, Konstantin
2018-12-24 10:54                 ` Akhil Goyal
2018-12-24 10:55                   ` Akhil Goyal
2018-12-24 11:22                   ` Ananyev, Konstantin
2018-12-24 11:24                     ` Akhil Goyal
2018-12-24 11:37                       ` Ananyev, Konstantin
2018-12-24 12:31                         ` Akhil Goyal
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 00/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-02  8:48           ` Akhil Goyal
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 01/10] examples/ipsec-secgw: allow user to disable some RX/TX offloads Konstantin Ananyev
2019-01-02 13:42           ` Akhil Goyal
2019-01-02 15:29             ` Ananyev, Konstantin
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 00/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-04 11:37             ` Akhil Goyal
2019-01-04 12:29               ` Ananyev, Konstantin
2019-01-04 14:40                 ` Akhil Goyal
2019-01-04 15:02                   ` Akhil Goyal
2019-01-04 17:04                   ` Ananyev, Konstantin
2019-01-04 17:38                     ` Akhil Goyal
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 01/10] examples/ipsec-secgw: allow user to disable some RX/TX offloads Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 00/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-10 15:20               ` Akhil Goyal
2019-01-11  1:08               ` Xu, Yanjie
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 01/10] examples/ipsec-secgw: allow user to disable some RX/TX offloads Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 00/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-11  0:00                 ` De Lara Guarch, Pablo
2019-01-11  0:16                   ` Ananyev, Konstantin
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 01/10] examples/ipsec-secgw: allow user to disable some Rx/Tx offloads Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 02/10] examples/ipsec-secgw: allow to specify neighbour MAC address Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 04/10] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 05/10] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 06/10] examples/ipsec-secgw: fix inbound SA checking Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 07/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 08/10] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 09/10] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2019-01-10 21:09               ` [dpdk-dev] [PATCH v8 10/10] doc: update ipsec-secgw guide and relelase notes Konstantin Ananyev
2019-01-11  2:49                 ` Varghese, Vipin
2019-01-11  6:56                   ` Akhil Goyal
2019-01-11  8:11                     ` Varghese, Vipin
2019-01-12 23:49                 ` Thomas Monjalon
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 02/10] examples/ipsec-secgw: allow to specify neighbour mac address Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 04/10] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 05/10] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 06/10] examples/ipsec-secgw: fix inbound SA checking Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 07/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 08/10] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 09/10] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2019-01-09 11:44             ` [dpdk-dev] [PATCH v7 10/10] doc: update ipsec-secgw guide and relelase notes Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 02/10] examples/ipsec-secgw: allow to specify neighbour mac address Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 04/10] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 05/10] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 06/10] examples/ipsec-secgw: fix inbound SA checking Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 07/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 08/10] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2019-01-04 14:58             ` Akhil Goyal
2019-01-04 16:25               ` Ananyev, Konstantin
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 09/10] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2019-01-03 20:25           ` [dpdk-dev] [PATCH v6 10/10] doc: update ipsec-secgw guide and relelase notes Konstantin Ananyev
2019-01-04  2:42             ` Varghese, Vipin
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 02/10] examples/ipsec-secgw: allow to specify neighbour mac address Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 03/10] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2019-01-02 11:44           ` Akhil Goyal
2019-01-02 13:43             ` Ananyev, Konstantin
2019-01-02 13:50               ` Akhil Goyal [this message]
2019-01-02 15:06                 ` Ananyev, Konstantin
2019-01-03 20:36                 ` Ananyev, Konstantin
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 04/10] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 05/10] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 06/10] examples/ipsec-secgw: fix inbound SA checking Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 07/10] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 08/10] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 09/10] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2018-12-28 15:33         ` [dpdk-dev] [PATCH v5 10/10] doc: update ipsec-secgw guide and relelase notes Konstantin Ananyev
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 2/9] examples/ipsec-secgw: allow to specify neighbor mac address Konstantin Ananyev
2018-12-21 14:05         ` Akhil Goyal
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 3/9] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2018-12-21 14:12         ` Akhil Goyal
2018-12-21 14:49           ` Ananyev, Konstantin
2018-12-21 14:57             ` Akhil Goyal
2018-12-21 15:01               ` Ananyev, Konstantin
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 4/9] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2018-12-21 14:25         ` Akhil Goyal
2018-12-21 14:54           ` Ananyev, Konstantin
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 5/9] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 6/9] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-12-21 15:15         ` Akhil Goyal
2018-12-24 12:29           ` Ananyev, Konstantin
2018-12-24 12:32             ` Akhil Goyal
2018-12-24 12:37               ` Ananyev, Konstantin
2018-12-24 13:21                 ` Ananyev, Konstantin
2018-12-24 13:50                   ` Akhil Goyal
2018-12-24 15:01                     ` Ananyev, Konstantin
2018-12-26  9:02                       ` Akhil Goyal
2018-12-27 11:06                         ` Ananyev, Konstantin
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 7/9] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2018-12-21 15:23         ` Akhil Goyal
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 8/9] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2018-12-14 16:40       ` [dpdk-dev] [PATCH v4 9/9] doc: update ipsec-secgw guide and relelase notes Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 1/8] examples/ipsec-secgw: avoid to request unused TX offloads Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 2/8] examples/ipsec-secgw: allow to specify neighbor mac address Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 3/8] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 4/8] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 5/8] examples/ipsec-secgw: make local variables static Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 6/8] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 7/8] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2018-12-06 15:54     ` [dpdk-dev] [PATCH v3 8/8] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 2/7] examples/ipsec-secgw: allow to specify neighbor mac address Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 3/7] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 4/7] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 5/7] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 6/7] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2018-11-30 17:04   ` [dpdk-dev] [PATCH v2 7/7] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 2/7] examples/ipsec-secgw: allow to specify neighbor mac address Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 3/7] examples/ipsec-secgw: fix crypto-op might never get dequeued Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 4/7] examples/ipsec-secgw: fix outbound codepath for single SA Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 5/7] examples/ipsec-secgw: make app to use ipsec library Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 6/7] examples/ipsec-secgw: make data-path " Konstantin Ananyev
2018-11-22 18:49 ` [dpdk-dev] [PATCH 7/7] examples/ipsec-secgw: add scripts for functional test Konstantin Ananyev

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