On 03/23/2010 08:13 PM, Jeff Trawick wrote:
On Tue, Mar 23, 2010 at 10:02 AM, Nilesh Govindarajan<li...@itech7.com> wrote:
On 03/23/2010 07:26 PM, Nilesh Govindarajan wrote:
On 03/23/2010 07:20 PM, Jeff Trawick wrote:
On Tue, Mar 23, 2010 at 8:48 AM, Nilesh Govindarajan<li...@itech7.com>
wrote:
On 03/23/2010 06:07 PM, Jeff Trawick wrote:
On Sat, Mar 20, 2010 at 2:16 AM, Nilesh Govindarajan<li...@itech7.com>
wrote:
Hi,
I recently migrated from mod_fastcgi to mod_fcgid and experienced
enormous
performance boost.
My current settings is as follows -
FcgidMaxProcesses 100
FcgidMaxProcessesPerClass 50
FcgidFixPathInfo 1
FcgidPassHeader HTTP_AUTHORIZATION
FcgidMaxRequestsPerProcess 10000
Since this is PHP, make sure you sync PHP's child exit strategy with
mod_fcgid's max-requests-per-process.
See "Special PHP considerations" at
http://httpd.apache.org/mod_fcgid/mod/mod_fcgid.html for discussion of
a couple of issues.
FcgidOutputBufferSize 1048576
FcgidProcessLifeTime 1800
FcgidMinProcessesPerClass 2
Main use is for PHP applications, but in future may add some
languages.
Server config -
Fedora 12, 500 MB RAM, Pentium 2 Ghz
PHP applications are cached using Xcache, and will normally use
PostgreSQL.
Yeah I've synced that by setting the relevant PHP_FCGI_* environment
variables.
But Xcache doesn't work with mod_fcgid. Any solutions for that ? Can
I use
any alternatives to Xcache to cache the compiled code of the PHP
script ?
Aren't APC and Xcache similar with respect to mod_fcgid, in that the
cache will be utilized for repeated execution by the same PHP process,
such that the cache is still useful as long as the PHP process spawned
by mod_fcgid remains active for as long as possible?
(mod_fcgid's mapping of requests to idle processes it has spawned
negates the use of a single such cache for multiple concurrent
requests.)
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Yeah true. I think I don't need it after you said this. :)
Is even memcached the same wrt mod_fcgid, apc, xcache ?
I found that its not the same and it can't be used as a cache for compiled
scripts.
mod_fcgid really is infinite times better than mod_fastcgi.
For PHP opcode caching, which relies on access to a shared memory
cache via the PHP FastCGI process management, mod_fcgid is at a big
disadvantage to mod_fcgid: mod_fastcgi can send multiple simultaneous
requests to those PHP-managed processes but mod_fcgid can't; thus, the
cache won't be as well utilized with mod_fcgid.
I have read numerous statements that mod_fcgid is faster than
mod_fastcgi, but I don't know precisely why (or when), or if each is
optimally configured when compared to the other.
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I configured mod_fcgid with almost the same parameters as mod_fastcgi
and experienced a lot of performance boost.
--
Nilesh Govindarajan
Site & Server Administrator
www.itech7.com
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