From: David Miller <davem@davemloft.net>
To: e@erig.me
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net] udp: inuse checks can quit early for reuseport
Date: Fri, 06 Jan 2017 20:57:07 -0500 (EST) [thread overview]
Message-ID: <20170106.205707.49254629072159860.davem@davemloft.net> (raw)
In-Reply-To: <20170106012236.20078-1-e@erig.me>
From: Eric Garver <e@erig.me>
Date: Thu, 5 Jan 2017 20:22:36 -0500
> UDP lib inuse checks will walk the entire hash bucket to check if the
> portaddr is in use. In the case of reuseport we can stop searching when
> we find a matching reuseport.
>
> On a 16-core VM a test program that spawns 16 threads that each bind to
> 1024 sockets (one per 10ms) takes 1m45s. With this change it takes 11s.
>
> Also add a cond_resched() when the port is not specified.
>
> Signed-off-by: Eric Garver <e@erig.me>
Applied to net-next.
prev parent reply other threads:[~2017-01-07 1:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-06 1:22 [PATCH net] udp: inuse checks can quit early for reuseport Eric Garver
2017-01-07 1:57 ` David Miller [this message]
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=20170106.205707.49254629072159860.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=e@erig.me \
--cc=netdev@vger.kernel.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).