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+--- Thread: very bad fcgi performance (/thread-9997.html)
Pages: 1 2
very bad fcgi performance - nils - 03-14-2010 02:21 AM
A php-driven websites loads a very long time, while the php-cgi5 process uses 0% and mysql too. phpinfo() says i use
Code:
Server API CGI/FastCGICode:
[...]fcgid[...]Reducing php-cgi5 processes count or apache worker count has no effect...
It's an openSuse 11.1 system with ispcp 1.0.4
RE: very bad fcgi performance - kilburn - 03-14-2010 04:42 AM
Does "top" show a high % in the CPU WAIT time? It looks like an I/O problem...
RE: very bad fcgi performance - nils - 03-14-2010 08:32 AM
All CPUs stay idle during almost the whole request
It's like this:
Code:
top - 23:20:49 up 6:39, 1 user, load average: 0.05, 0.05, 0.01
Tasks: 152 total, 1 running, 150 sleeping, 0 stopped, 1 zombie
Cpu(s): 0.1%us, 0.1%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1048576k total, 278324k used, 770252k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cachedA Request takes place as after the following pattern:
- Browser-GET
- ~1 sec pause
- php-cgi5 uses ~5%cpu for ~1 sec
- ~10 sec pause
- Delivery
RE: very bad fcgi performance - jeffv - 03-15-2010 10:47 PM
I'm having a very similar problem after an upgrade to 1.0.4.
RE: very bad fcgi performance - BeNe - 03-16-2010 01:14 AM
You use ApacheWorker with how many start process ?
And you are sure that the botleneck is not the MySQL-DB ?
Install eAccelerator to cache the sites - speeds up very fine and good.
--> http://www.isp-control.net/documentation/doku.php?id=howto:eaccelerator
Greez BeNe
RE: very bad fcgi performance - nils - 03-16-2010 01:30 AM
Don't know if mysql is the problem, mysqld-process stays at 0% cpu, no slow queries, mytop says:
Code:
MySQL on localhost (5.0.67-Max) up 0+00:02:37 [16:27:23]
Queries: 6.0k qps: 39 Slow: 0.0 Se/In/Up/De(%): 00/00/00/00
qps now: 0 Slow qps: 0.0 Threads: 1 ( 1/ 0) 00/00/00/00
Key Efficiency: 99.5% Bps in/out: 9.4/ 1.4k Now in/out: 8.4/ 1.3kBut a script with nothing but phpinfo() takes only 2,7ms...
RE: very bad fcgi performance - BeNe - 03-16-2010 01:38 AM
Maybe your CMS or what every is very slow ?
Greez BeNe
RE: very bad fcgi performance - nils - 03-16-2010 01:42 AM
On my old server, the cms(drupal6) was very fast, <10ms/request, on the new server with ispcp the same request takes several seconds
Both with the opcode/usercache system apc installed...
Ispcp's user interface is sometimes slow,too, but not everytimes, so i'm not sure..
I use mpm_prefork_module (static) with default tuning-conf:
Code:
<IfModule prefork.c>
# number of server processes to start
# http://httpd.apache.org/docs/2.2/mod/mpm_common.html#startservers
StartServers 1
# minimum number of server processes which are kept spare
# http://httpd.apache.org/docs/2.2/mod/prefork.html#minspareservers
MinSpareServers 1
# maximum number of server processes which are kept spare
# http://httpd.apache.org/docs/2.2/mod/prefork.html#maxspareservers
MaxSpareServers 5
# highest possible MaxClients setting for the lifetime of the Apache process.
# http://httpd.apache.org/docs/2.2/mod/mpm_common.html#serverlimit
ServerLimit 10
# maximum number of server processes allowed to start
# http://httpd.apache.org/docs/2.2/mod/mpm_common.html#maxclients
MaxClients 10
# maximum number of requests a server process serves
# http://httpd.apache.org/docs/2.2/mod/mpm_common.html#maxrequestsperchild
MaxRequestsPerChild 10000
</IfModule>RE: very bad fcgi performance - BeNe - 03-16-2010 01:47 AM
Why Prefork ? Work would make more sense or ?!
Greez BeNe
RE: very bad fcgi performance - kilburn - 03-16-2010 01:59 AM
Quote:Mem: 1048576k total, 278324k used, 770252k free, 0k buffers
0k buffers? This is REALLY strange. I think your VM is on an overloaded host machine or something...