All of lore.kernel.org
 help / color / mirror / Atom feed
From: Kathleen Capella <Kathleen.Capella@arm.com>
To: "thomas@monjalon.net" <thomas@monjalon.net>
Cc: "dev@dpdk.org" <dev@dpdk.org>, nd <nd@arm.com>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: fix TX burst queue drain edge case
Date: Fri, 26 Mar 2021 16:27:47 +0000	[thread overview]
Message-ID: <DBAPR08MB57523DD9D6AE11E9FEC0DF1687619@DBAPR08MB5752.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <6914149.Zb7rk1ssy2@thomas>


> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Wednesday, March 24, 2021 1:16 PM
> To: Kathleen Capella <Kathleen.Capella@arm.com>
> Cc: dev@dpdk.org; nd <nd@arm.com>; Honnappa Nagarahalli
> <Honnappa.Nagarahalli@arm.com>
> Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: fix TX burst queue drain edge
> case
> 
> 23/02/2021 19:23, Kathleen Capella:
> > Initialize prev_tsc to cur_tsc. This avoids running the TX queue drain
> > in the first iteration of the packet processing loop.
> 
> Is it really a fix? What was broken?
> Isn't it an optimization?

It could be considered an optimization since effectively it prevents entering the if statement on the
first iteration of the loop. I will remove the "fixes" line and reword the subject line.
> 
> > Fixes: af75078fece3 ("first public release")
> 
> If it's really a fix, we should probably backport it, so
> Cc: stable@dpdk.org

[Kathleen Capella] 
It is not really a significant problem to be fixed in previous releases so it does not need to be backported.
> 
> > Signed-off-by: Kathleen Capella <kathleen.capella@arm.com>
> > Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
> 
> 


  reply	other threads:[~2021-03-26 16:28 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-23 18:23 [dpdk-dev] [PATCH] examples/l3fwd: fix TX burst queue drain edge case Kathleen Capella
2021-03-24 17:15 ` Thomas Monjalon
2021-03-26 16:27   ` Kathleen Capella [this message]
2021-04-08 21:35 ` [dpdk-dev] [PATCH v2] examples/l3fwd: skip TX queue drain on first iteration Kathleen Capella
2021-04-20  1:12   ` Thomas Monjalon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=DBAPR08MB57523DD9D6AE11E9FEC0DF1687619@DBAPR08MB5752.eurprd08.prod.outlook.com \
    --to=kathleen.capella@arm.com \
    --cc=Honnappa.Nagarahalli@arm.com \
    --cc=dev@dpdk.org \
    --cc=nd@arm.com \
    --cc=thomas@monjalon.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.