On 09/10/2010 06:09 PM, Paras pradhan wrote:(Pardon me for not reading your op more carefully.)
On Fri, Sep 10, 2010 at 4:58 PM, John List <johnlist@xxxxxxxxxxxxxx> wrote:
Which processes are using the processors the most? (I suspect your imap server might be more responsible than apache.)
John Hicks
True . But I am only hitting the login.php page from ab to benchmark.
ThanksParas.
I am not familiar with ab, but after a quick read, I have one observation:
You say you are building a system to support 200+ concurrent users on horde. I assume that means 200 users concurrently running horde and therefore checking their inbox every minute or so. That would be about 3.3 requests per second.
It looks to me like your ab test is testing at 300.0 connections per second.
In other words, perhaps you needn't be too concerned about sluggish performance from the ab test.
John Hicks
On 09/08/2010 03:42 PM, Paras pradhan wrote:
Hi,
Looking for recommendations.
I need to serve 100-200+ concurrent users to provide php based webmail client (horde). I have setup memcached and php-fastcgid for this purpose. The server has four 2.2G AMD optereon cores with 8GB of memory. I am doing stress test using ab as: ab -t 36000 -c 100 https://url/h/imp/login.php. What I have noticed if the number of concurrent users are more than around 25, I get the sluggish performance and I can see linux load rising high to 25 to 30 and all the cpu cores are approximately 75% used.
This is what I have in config files:
mpm worker:
--
<IfModule worker.c>
StartServers 15
MaxClients 960
MinSpareThreads 75
MaxSpareThreads 150
ThreadsPerChild 64
MaxRequestsPerChild 5000
--
memcached: 4GB
---
fcgid:
<IfModule !mod_fastcgi.c>
AddHandler fcgid-script .fcgi
MaxRequestsPerProcess 10000
MaxProcessCount 100
IPCCommTimeout 240
IdleTimeout 240
ProcessLifeTime 300
BusyTimeout 300
DefaultMaxClassProcessCount 100
DefaultMinClassProcessCount 50
</IfModule>
---
php-fcgid:
# Number of PHP childs that will be launched. Leave undefined to let PHP decide.
# DefaultInitEnv PHP_FCGI_CHILDREN 4
# Maximum requests before a process is stopped and a new one is launched
DefaultInitEnv PHP_FCGI_MAX_REQUESTS 10000
----
OS: RHEL 5.5
Apache: 2.2.3
PHP: 5.1
Mysql: 5.0
Will appreciate for any inputs.
Thanks!
Paras.
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