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[DragonFlyBSD - Bug #2368] sendfile(2) freezes for a few seconds


From: Sepherosa Ziehau via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 17 May 2012 03:07:30 -0700

Issue #2368 has been updated by Sepherosa Ziehau.


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
>
>
> --
> You have received this notification because you have either subscribed to it, or are involved in it.
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-- 
Tomorrow Will Never Die
----------------------------------------
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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