| Posted by Insert, 05-12-2011, 03:54 PM | | Hi, i have a server with 8x i7-2600 and 8GB ram and 1TB HD SATA 7200rpm(mysql run on a 250GB SATA 7200rpm separated)
What better setting for apache on the following variables?
MinSpareServers 5
MaxSpareServers 20
ServerLimit 1000
MaxClients 999
MaxRequestsPerChild 20000
KeepAlive On
KeepAliveTimeout 5
MaxKeepAliveRequests 300
This server have 1500 domains and load average is 10.0 all day.
top - 16:55:31 up 5:26, 2 users, load average: 3.35, 6.23, 7.67
Tasks: 405 total, 1 running, 401 sleeping, 0 stopped, 3 zombie
Cpu(s): 17.2%us, 3.7%sy, 0.1%ni, 73.2%id, 5.7%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 8221288k total, 6568836k used, 1652452k free, 525596k buffers
Swap: 8385920k total, 0k used, 8385920k free, 4617872k cached
# free -m
total used free shared buffers cached
Mem: 8028 6415 1612 0 513 4511
-/+ buffers/cache: 1390 6638
Swap: 8189 0 8189
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| Posted by Patrick, 05-12-2011, 04:23 PM | | What PHP wrapper are you using? suPHP, FastCGI, CGI?
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| Posted by Insert, 05-12-2011, 05:11 PM | | I am using suPHP
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| Posted by stardust_x7, 05-12-2011, 05:21 PM | | Nearly 400 process you are running, you should check active connections :
And set limit on per user max process to reduce abusive usage :
/usr/local/apache/conf/includes/pre_main_global.conf
It seems you already use correct apache configurations according to the specification, but your node seems quite loaded for resource consuming processes.
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| Posted by Patrick, 05-12-2011, 05:27 PM | | The problem is mostly related to suPHP. It is a huge, huge CPU hog... we switched from suPHP to FastCGI and the load averages were cut by 75%! Unless your memory consumption is a problem, there's no real need to use suPHP when FastCGI does pretty much the exact same thing with equal security, but far better performance.
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| Posted by stardust_x7, 05-12-2011, 05:41 PM | | Im using only "CGI" as PHP wrapper, I know peoples tell about security issues, but never faced any problem with 17+ nodes yet.
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| Posted by Insert, 05-12-2011, 06:37 PM | | Patrick to use FastCGI only need to compile apache with FastCGI? Or need other configuration?
You can create a step by step to change of suPHP to FastCGI please?
I did this in the past but had no success.
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| Posted by Insert, 05-12-2011, 06:59 PM | | I have disabled suPHP and enabled mod fastcgi on apache session, and fast cgi on php5 session, only this or need more settings? This is correct?
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| Posted by Insert, 05-13-2011, 01:34 AM | | Hi, i have installed the FastCGI and work ok but after any minutes apache down and on error log show:
mod_fcgid: Can't create shared memory for size
Now increased it to 1GB shared memory of the server sysctl(kernel.shmmax = 1073741824) do not know if this will solve, someone already went through this?
I am using also the eaccelerator with 256M cache.
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| Posted by Insert, 05-13-2011, 02:00 AM | | Still:
[Fri May 13 02:59:02 2011] [emerg] (28)No space left on device: mod_fcgid: Can't create shared memory for size 1167812 bytes
[Fri May 13 02:59:12 2011] [emerg] (28)No space left on device: mod_fcgid: Can't create shared memory for size 1167812 bytes
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| Posted by Insert, 05-13-2011, 02:09 PM | | Now increased the kern.ipc.shmall on /etc/sysctl.conf and resolved.
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