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Posted to dev@httpd.apache.org by Reindl Harald <h....@thelounge.net> on 2017/04/17 11:28:30 UTC
Apache leaves shared memory segments
https://bz.apache.org/bugzilla/show_bug.cgi?id=7838
that still happens with 2.4.25
"killall httpd 2> /dev/null" in a script starting a temporary httpd for
php-pgo-profiling since it's a SIGTERM should not leave them and finally
fail after enough runs to allocate shm segment for auth_digest until you
reboot
killall httpd 2> /dev/null
sleep 2
rm -f "$PROFILE_ROOT/php.ini"
rm -f "$PROFILE_ROOT/httpd.conf"
rm -f "$PROFILE_ROOT/logs/sess_"*
rm -f "$PROFILE_ROOT/logs/authdigest"*
rm -f "$PROFILE_ROOT/logs/httpd.pid"
rm -f "$PROFILE_ROOT/logs/modsec"*
the 256 bytes are pretty clear from "AuthDigestShmemSize 256"
$HTTPD_BINARY -X -f "$PROFILE_ROOT/httpd.conf" to make sure there is
only one httpd process should not take longer than the 2 seconds sleep
given that it handles 1500 serial requests within 10 seconds before
[builduser@testserver:/rpmbuild/PHP-PGO]$ ipcs -m
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x661403ad 0 root 600 1000 2
0x151450bd 32769 root 600 1000 6
0x0121019a 65538 builduser 600 256 0
0xc121019a 98307 builduser 600 256 0
0x8621019a 131076 builduser 600 256 0
Re: Apache leaves shared memory segments
Posted by Reindl Harald <h....@thelounge.net>.
and also "-k stop" don't remove them
read HTTPD_PID < "$PROFILE_ROOT/logs/httpd.pid"
$HTTPD_BINARY -f "$PROFILE_ROOT/httpd.conf" -k stop
exit 0
[builduser@testserver:/rpmbuild/PHP-PGO]$ ipcs -m | wc -l
12
[builduser@testserver:/rpmbuild/PHP-PGO]$ ./profile.sh
[builduser@testserver:/rpmbuild/PHP-PGO]$ ipcs -m | wc -l
13
[builduser@testserver:/rpmbuild/PHP-PGO]$ ./profile.sh
[builduser@testserver:/rpmbuild/PHP-PGO]$ ipcs -m | wc -l
14
[builduser@testserver:/rpmbuild/PHP-PGO]$ ipcs -m
------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x661403ad 0 root 600 1000 2
0x151450bd 32769 root 600 1000 6
0x0121019a 65538 builduser 600 256 0
0xc121019a 98307 builduser 600 256 0
0x8621019a 131076 builduser 600 256 0
0xdf21019a 163845 builduser 600 256 0
0x1b210199 196614 builduser 600 256 0
0x99210199 229383 builduser 600 256 0
0xe2210199 262152 builduser 600 256 0
0x5d210199 294921 builduser 600 256 0
Am 17.04.2017 um 13:28 schrieb Reindl Harald:
> https://bz.apache.org/bugzilla/show_bug.cgi?id=7838
> that still happens with 2.4.25
>
> "killall httpd 2> /dev/null" in a script starting a temporary httpd for
> php-pgo-profiling since it's a SIGTERM should not leave them and finally
> fail after enough runs to allocate shm segment for auth_digest until you
> reboot
>
> killall httpd 2> /dev/null
> sleep 2
> rm -f "$PROFILE_ROOT/php.ini"
> rm -f "$PROFILE_ROOT/httpd.conf"
> rm -f "$PROFILE_ROOT/logs/sess_"*
> rm -f "$PROFILE_ROOT/logs/authdigest"*
> rm -f "$PROFILE_ROOT/logs/httpd.pid"
> rm -f "$PROFILE_ROOT/logs/modsec"*
>
> the 256 bytes are pretty clear from "AuthDigestShmemSize 256"
>
> $HTTPD_BINARY -X -f "$PROFILE_ROOT/httpd.conf" to make sure there is
> only one httpd process should not take longer than the 2 seconds sleep
> given that it handles 1500 serial requests within 10 seconds before
>
> [builduser@testserver:/rpmbuild/PHP-PGO]$ ipcs -m
>
> ------ Shared Memory Segments --------
> key shmid owner perms bytes nattch status
> 0x661403ad 0 root 600 1000 2
> 0x151450bd 32769 root 600 1000 6
> 0x0121019a 65538 builduser 600 256 0
> 0xc121019a 98307 builduser 600 256 0
> 0x8621019a 131076 builduser 600 256 0