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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"alialnu@mellanox.com" <alialnu@mellanox.com>,
	"orgerlitz@mellanox.com" <orgerlitz@mellanox.com>,
	"wenzhuo.lu@intel.com" <wenzhuo.lu@intel.com>,
	"beilei.xing@intel.com" <beilei.xing@intel.com>,
	"bernard.iremonger@intel.com" <bernard.iremonger@intel.com>
Cc: "hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>,
	"jerinj@marvell.com" <jerinj@marvell.com>,
	"viacheslavo@mellanox.com" <viacheslavo@mellanox.com>,
	"thomas@monjalon.net" <thomas@monjalon.net>,
	Ruifeng Wang <Ruifeng.Wang@arm.com>,
	Phil Yang <Phil.Yang@arm.com>, nd <nd@arm.com>,
	"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 2/5] app/testpmd: enable burst stats for flowgen mode rx path
Date: Mon, 6 Jul 2020 18:17:40 +0100
Message-ID: <d9b6d66d-2deb-1292-f6b0-731455664b4d@intel.com> (raw)
In-Reply-To: <DB6PR0802MB221650DCA16C4B49284AD6F298690@DB6PR0802MB2216.eurprd08.prod.outlook.com>

On 7/6/2020 6:06 PM, Honnappa Nagarahalli wrote:
> <snip>
> 
>> Subject: Re: [PATCH v2 2/5] app/testpmd: enable burst stats for flowgen mode
>> rx path
>>
>> On 6/26/2020 11:09 PM, Honnappa Nagarahalli wrote:
>>> Enable missing burst stats for rx path for flowgen mode.
>>>
>>> Fixes: e9e23a617eb8 ("app/testpmd: add flowgen forwarding engine")
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
>>> Reviewed-by: Phil Yang <phil.yang@arm.com>
>>> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
>>> Tested-by: Phil Yang <phil.yang@arm.com>
>>> ---
>>>  app/test-pmd/flowgen.c | 4 ++++
>>>  1 file changed, 4 insertions(+)
>>>
>>> diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c index
>>> 4bd351e67..011887c61 100644
>>> --- a/app/test-pmd/flowgen.c
>>> +++ b/app/test-pmd/flowgen.c
>>> @@ -111,6 +111,10 @@ pkt_burst_flow_gen(struct fwd_stream *fs)
>>>  	/* Receive a burst of packets and discard them. */
>>>  	nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
>>>  				 nb_pkt_per_burst);
>>> +#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
>>> +	fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
>>> +#endif
>>> +
>>
>> Flow generator is for Tx, what is the point of getting stats for the Rx?
> Is there any reason for this mode to receive the packets?
> The reason I ask is, the core cycles include the RX call as well. So, we have cycles/packet that includes the RX call and burst stats that does not show the RX burst stats.
> Do we need to remove the call to rte_eth_rx_burst API?
> 

The implementation receives packets and frees them immediately.
I assume the Rx is implemented in case port receives packets, like if other end
forwards the generated packets back to same port.
Yes it consumes cycles for Rx but received packets are ignored, I am not sure if
received packets have any meaning in flowgen to get additional burst stats.

  reply	other threads:[~2020-07-06 17:17 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-17 14:43 [dpdk-dev] [PATCH 1/5] app/testpmd: clock gettime call in throughput calculation Honnappa Nagarahalli
2020-06-17 14:43 ` [dpdk-dev] [PATCH 2/5] app/testpmd: enable burst stats for flowgen mode rx path Honnappa Nagarahalli
2020-06-18 14:57   ` Phil Yang
2020-06-17 14:43 ` [dpdk-dev] [PATCH 3/5] app/testpmd: enable burst stats for noisy vnf mode Honnappa Nagarahalli
2020-06-18  7:16   ` Jens Freimann
2020-06-17 14:43 ` [dpdk-dev] [PATCH 4/5] app/testpmd: fix burst percentage calculation Honnappa Nagarahalli
2020-06-18 15:01   ` Phil Yang
2020-06-23 13:33   ` Ali Alnubani
2020-06-17 14:43 ` [dpdk-dev] [PATCH 5/5] app/testpmd: enable empty polls in burst stats Honnappa Nagarahalli
2020-06-18 15:05   ` Phil Yang
2020-06-23 13:34   ` Ali Alnubani
2020-06-17 15:16 ` [dpdk-dev] [PATCH 1/5] app/testpmd: clock gettime call in throughput calculation Jerin Jacob
2020-06-18  4:03   ` Honnappa Nagarahalli
2020-06-18 10:16     ` Jerin Jacob
2020-06-18 15:08 ` Phil Yang
2020-06-23 13:33 ` Ali Alnubani
2020-06-26 22:09 ` [dpdk-dev] [PATCH v2 " Honnappa Nagarahalli
2020-06-26 22:09   ` [dpdk-dev] [PATCH v2 2/5] app/testpmd: enable burst stats for flowgen mode rx path Honnappa Nagarahalli
2020-07-06 16:02     ` Ferruh Yigit
2020-07-06 17:06       ` Honnappa Nagarahalli
2020-07-06 17:17         ` Ferruh Yigit [this message]
2020-07-06 18:46           ` Honnappa Nagarahalli
2020-06-26 22:09   ` [dpdk-dev] [PATCH v2 3/5] app/testpmd: enable burst stats for noisy vnf mode Honnappa Nagarahalli
2020-07-06 16:08     ` Ferruh Yigit
2020-07-06 16:59       ` Honnappa Nagarahalli
2020-07-06 17:11         ` Ferruh Yigit
2020-07-06 17:41           ` Honnappa Nagarahalli
2020-06-26 22:09   ` [dpdk-dev] [PATCH v2 4/5] app/testpmd: fix burst percentage calculation Honnappa Nagarahalli
2020-07-06 16:10     ` Ferruh Yigit
2020-06-26 22:09   ` [dpdk-dev] [PATCH v2 5/5] app/testpmd: enable empty polls in burst stats Honnappa Nagarahalli
2020-07-06 17:05     ` Ferruh Yigit
2020-07-06 19:11       ` Honnappa Nagarahalli
2020-07-07  9:32         ` Ferruh Yigit
2020-07-06 15:36   ` [dpdk-dev] [PATCH v2 1/5] app/testpmd: clock gettime call in throughput calculation Ferruh Yigit
2020-07-06 16:53     ` Honnappa Nagarahalli
2020-07-06 17:19       ` Ferruh Yigit
2020-07-06 23:32 ` [dpdk-dev] [PATCH v3 1/3] " Honnappa Nagarahalli
2020-07-06 23:32   ` [dpdk-dev] [PATCH v3 2/3] app/testpmd: fix burst percentage calculation Honnappa Nagarahalli
2020-07-06 23:32   ` [dpdk-dev] [PATCH v3 3/3] app/testpmd: enable empty polls in burst stats Honnappa Nagarahalli
2020-07-07 17:47   ` [dpdk-dev] [PATCH v3 1/3] app/testpmd: clock gettime call in throughput calculation Ferruh Yigit

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