Hello!I'm running Apache 2.2.2[1] on a Mac OS X Server 10.3 box, and I'm having some trouble which I'm pretty sure is related to having large amounts of VirtualHosts (or large amounts of Directory). There's currently about 2200 of them and most, if not all, follow a specific scheme[2].
The issue is basically that when I try to run apachectl restart or graceful the execution will take two to three minutes, and right after it will take rougly the same time before the new httpd processes are spawned and during much of this time the server is left unreachable.
I have tried to locate the error but all I can come up with is that it is related to the large configuration (roughly 700k) file or the contents of it. An idea might be that the DocumentRoot checks are taking a lot of time, but I'm not familiar enough with neither Apache nor Mac OS X to determine if that's the case. Another idea is that the delay is caused by the fact that a lot more memory[3] has to be freed/allocated when Apache is stopped and started with a large configuration file.
I am aware that this might be possible to avoid using the "mass" instructions for VirtualHosts but if there's a way to stick with what I have today I'd prefer that.
Any help or hints is greatly appreciated!
Thanks,
jome
1:
Output of httpd -V:
Server version: Apache/2.2.2
Server built: Jun 9 2006 16:41:37
Server's Module Magic Number: 20051115:2
Server loaded: APR 1.2.7, APR-Util 1.2.7
Compiled using: APR 1.2.7, APR-Util 1.2.7
Architecture: 32-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=128
-D HTTPD_ROOT="/usr"
-D SUEXEC_BIN="/usr/bin/suexec"
-D DEFAULT_PIDLOG="/var/run/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="/var/run/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="/etc/apache2/mime.types"
-D SERVER_CONFIG_FILE="/etc/apache2/httpd.conf"
2:
<VirtualHost ip (same on all vhosts)>
ServerName domain
DocumentRoot /path
DirectoryIndex index.html
<Directory "/path">
Options All +MultiViews -ExecCGI -Indexes
AllowOverride None
</Directory>
</VirtualHost>
3:
With small config:
PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE
VSIZE
9804 httpd 0.0% 0:00.00 1 10 37 80K 21.3M 480K
47.1M
With large config:PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VSIZE 9685 httpd 0.0% 0:00.10 1 12 39 344K 35.1M 11.4M 55.1M
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