Re: [users@httpd] Prefork MPM: Locking of error logs during write?

2014-09-07 Thread Bill Moseley
On Sun, Sep 7, 2014 at 4:30 PM, Jeff Trawick wrote: > > Apache httpd on Unix doesn't use locking. The file is opened in the > parent with O_APPEND. > > If the writers inherit that descriptor, all is okay for "small" buffers; > if a writer opens without O_APPEND, bad. > Thanks Jeff, In my tests

Re: [users@httpd] Prefork MPM: Locking of error logs during write?

2014-09-07 Thread Jeff Trawick
On Sat, Sep 6, 2014 at 10:31 AM, Bill Moseley wrote: > Apache 2.2.15 on Linux. > > When Apache children send output to stderr it ends up in my error_log file. > > Does Apache have any mechanism to prevent intermixing of this output? > That is, if all Apache children write large ( but < 4k) string

[users@httpd] Prefork MPM: Locking of error logs during write?

2014-09-06 Thread Bill Moseley
Apache 2.2.15 on Linux. When Apache children send output to stderr it ends up in my error_log file. Does Apache have any mechanism to prevent intermixing of this output? That is, if all Apache children write large ( but < 4k) strings to stderr does Apache have anything to prevent inter mixing of