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From: Yann Ylavic <ylavic.dev@gmail.com>
Date: Fri, 3 Mar 2017 18:48:08 +0100
Message-ID: <CAKQ1sVNdXNk31a6110UgCcKQokF4G874sGZJr6U8TD_kMEY-4A@mail.gmail.com>
Subject: Re: Read scattered to gather send (was [too long]: httpd 2.4.25,
 mpm_event, ssl: segfaults)
To: httpd-dev <dev@httpd.apache.org>
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archived-at: Fri, 03 Mar 2017 17:48:15 -0000

On Fri, Mar 3, 2017 at 6:41 PM, Yann Ylavic <ylavic.dev@gmail.com> wrote:
>
> Currently I have good results (with gdb/LOG_TRACE, no stress test yet ;)
>
> For "http:" (main server) with:
>
>     EnableMMAP off
>     EnableSendfile off
>
>     EnableScatterReadfile on
>     #FileReadBufferSize 8192 <= default
>
>     FlushThreshold    1048576

Sorry, wrong copy/paste value, I tested that but 1MB looks not really
reasonable for a common case.
So:

     FlushThreshold    131072

should be enough for a (already powerful) test ;)

>     FlushMemThreshold 65536
>     FlushMaxPipelined 5

>
> And for "https:" (vhost) with overridden:
>
>     EnableScatterReadfile fixed
>
>     FileReadBufferSize 16384

The other values are fine I think.