DragonFlyBSD

On Thu, May 17, 2012 at 3:07 AM, Francois Tigeot via Redmine
<bugtracker-admin@leaf.dragonflybsd.org> wrote:
>
> Issue #2368 has been reported by Francois Tigeot.
>
> ----------------------------------------
> Bug #2368: sendfile(2) freezes for a few seconds
> http://bugs.dragonflybsd.org/issues/2368
>
> Author: Francois Tigeot
> Status: New
> Priority: Normal
> Assignee:
> Category:
> Target version:
>
>
> Having updated a web server to apache-2.4 (sendfile enabled), I noticed
> some static images didn't load in one go:
>
> - top parts are displayed instantly
> - image downloads freeze for a few seconds
> - missing bottom parts are then downloaded and displayed instantly
>
> Switching EnableSendfile between on/off in httpd.conf enables or disables
> this behavior 100% of the time

Possible to get a tcpdump (w/ -s 128 should be ok)?

Best Regards,
sephe

--
Tomorrow Will Never Die

On Thu, May 17, 2012 at 5:50 PM, Francois Tigeot via Redmine
<bugtracker-admin@leaf.dragonflybsd.org> wrote:
>
> Issue #2368 has been updated by Francois Tigeot.
>
> Status changed from New to Closed
> % Done changed from 0 to 100
>
> This bug is caused by the use of TCP_NOPUSH in association with sendfile(2) in the Apache-2.4 code.

Please test unpatched apache-2.4 w/ the following commit.
3533a1834a0ba3a7c441ede5120c3720d8a34c4c

Best Regards,
sephe

>
> Thanks for Sepherosa Ziehau for pointing it.
>
> Bug reports will be filled with pkgsrc and the upstream project.
> ----------------------------------------
> Bug #2368: sendfile(2) freezes for a few seconds
> http://bugs.dragonflybsd.org/issues/2368
>
> Author: Francois Tigeot
> Status: Closed
> Priority: Normal
> Assignee:
> Category:
> Target version:
>
>
> Having updated a web server to apache-2.4 (sendfile enabled), I noticed
> some static images didn't load in one go:
>
> - top parts are displayed instantly
> - image downloads freeze for a few seconds
> - missing bottom parts are then downloaded and displayed instantly
>
> Switching EnableSendfile between on/off in httpd.conf enables or disables
> this behavior 100% of the time
>
>
> --
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--
Tomorrow Will Never Die

Stock apache-2.4 works fine with the last commit.

Apache bug report:
https://issues.apache.org/bugzilla/show_bug.cgi?id=53253

Pkgsrc problem report:
http://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=46458