From: "Pattan, Reshma" <reshma.pattan@intel.com>
To: "longtb5@viettel.com.vn" <longtb5@viettel.com.vn>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Incorrect latencystats implementation
Date: Thu, 20 Sep 2018 13:08:45 +0000 [thread overview]
Message-ID: <3AEA2BF9852C6F48A459DA490692831F2A39B32D@IRSMSX109.ger.corp.intel.com> (raw)
In-Reply-To: <1537345496-70207-1-git-send-email-longtb5@viettel.com.vn>
> -----Original Message-----
> From: longtb5@viettel.com.vn [mailto:longtb5@viettel.com.vn]
> Sent: Wednesday, September 19, 2018 9:17 AM
> To: Pattan, Reshma <reshma.pattan@intel.com>
> Cc: dev@dpdk.org; Bao-Long Tran <longtb5@viettel.com.vn>
> Subject: Incorrect latencystats implementation
>
>
> I have submit a patch to implement the trivial fix. For the drop case I can
> think of 2 options. We can either clear timestamp when putting mbufs back
> to their pool, or change lib latencystats implementation to perform packet
> selection at TX callback and let RX callback add timestamp to every packet.
> Both option could affect performance but I think the second option is less
> aggressive.
What happens when applications drop the packets? Do they free the mbuf?
In such case, can application set the timestamp to 0 before freeing the mbuf, instead of making
these changes in latency library.?
Regards,
Reshma
next prev parent reply other threads:[~2018-09-20 13:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-19 8:17 longtb5
2018-09-19 8:22 ` [dpdk-dev] [PATCH] latency: clear mbuf timestamp after latency calculation longtb5
2018-09-20 10:25 ` Pattan, Reshma
2018-09-20 12:16 ` longtb5
2018-09-20 11:16 ` [dpdk-dev] [PATCH v2] " longtb5
2018-09-20 13:08 ` Pattan, Reshma [this message]
2018-09-21 1:58 ` [dpdk-dev] Incorrect latencystats implementation longtb5
2018-09-21 11:15 ` Pattan, Reshma
2018-09-21 12:14 ` Ananyev, Konstantin
2018-09-21 14:58 ` Pattan, Reshma
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