On 15 juin 2011, at 13:25, Bostjan Skufca wrote:
> This is the extract from source file server/mpm/prefork/prefork.c:
> ../..
> #ifndef DEFAULT_SERVER_LIMIT
> #define DEFAULT_SERVER_LIMIT 256
> #endif
I would say "ok", if all my servers would behave the same. But no.
On two almost identical servers, I have MaxClients set to 128.
On the first one (running only on port 80), the Scoreboard properly display 128 slots.
$ httpd -V
Server version: Apache/2.2.19 (FreeBSD)
Server built: Jun 3 2011 10:35:04
Server's Module Magic Number: 20051115:28
Server loaded: APR 1.4.2, APR-Util 1.3.10
Compiled using: APR 1.4.2, APR-Util 1.3.10
Architecture: 64-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_FLOCK_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/local"
-D SUEXEC_BIN="/usr/local/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/apache22/mime.types"
-D SERVER_CONFIG_FILE="etc/apache22/httpd.conf"
On the second one, running on both ports 80 and 443, the Scoreboard stays at 256 slots.
$ httpd -V
Server version: Apache/2.2.17 (FreeBSD)
Server built: Oct 27 2010 11:00:39
Server's Module Magic Number: 20051115:25
Server loaded: APR 1.4.2, APR-Util 1.3.10
Compiled using: APR 1.4.2, APR-Util 1.3.10
Architecture: 64-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_FLOCK_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/local"
-D SUEXEC_BIN="/usr/local/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/apache22/mime.types"
-D SERVER_CONFIG_FILE="etc/apache22/httpd.conf"
>
> On 15 June 2011 09:53, Patrick Proniewski
> <patrick.proniewski@xxxxxxxxxxxxx>wrote:
>
>> Hello,
>>
>> I'm using Munin to monitor few Apache servers.
>> The apache_processes plugin parse the output of
>> http://127.0.0.1:80/server-status?auto , which looks like this:
>>
>> Total Accesses: 20492
>> Total kBytes: 833698
>> CPULoad: .0142742
>> Uptime: 67703
>> ReqPerSec: .302675
>> BytesPerSec: 12609.6
>> BytesPerReq: 41660.5
>> BusyWorkers: 3
>> IdleWorkers: 9
>> Scoreboard:
>> __._.__._..___.KKW..................**cut**......................................
>>
>> BusyWorkers and IdleWorkers numbers are ok. But Scoreboard displays twice
>> the real number of slots configured in httpd config.
>>
>> I have this config:
>>
>> <IfModule mpm_prefork_module>
>> StartServers 5
>> MinSpareServers 5
>> MaxSpareServers 10
>> MaxClients 128
>> MaxRequestsPerChild 10000
>> </IfModule>
>>
>> I expect Scoreboard to display 128 slots, but it displays 256. Does it come
>> from the fact I'm running Apache on ports 80 AND 443?
>>
>>
>> regards,
>>
>> Patrick PRONIEWSKI
>> --
>> Administrateur Système - DSI - Université Lumière Lyon 2
>>
>>
Patrick PRONIEWSKI
--
Administrateur Système - DSI - Université Lumière Lyon 2
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