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Install Alternative PHP Cache on FreeBSD

Two days back i have installed Alternative PHP Cache on FreeBSD 6 server.
 
Alternative PHP Cache is used to speed up PHP script execution.
 
You can find more about APC at
 
 
On FreeBSD 6, its available on ports tree.
 
 
Port:   pecl-APC-3.0.8_1
Path:   /usr/ports/www/pecl-APC
Info:   Alternative PHP Cache
Maint: 
mnag@FreeBSD.org
B-deps: apache-1.3.34_4 autoconf-2.59_2 expat-2.0.0_1 m4-1.4.4 perl-5.8.8 php4-4.4.2_1
R-deps: apache-1.3.34_4 expat-2.0.0_1 perl-5.8.8 php4-4.4.2_1
WWW:   
http://pecl.php.net/package/APC
 
I have installed it with
 
server24# cd /usr/ports/www/pecl-APC
server24# make
server24# make install
After installing, i have edited /usr/local/etc/php.ini and added following entry
 
apc.enabled=”1″
apc.shm_size=”30″
Everything works fine, in phpinfo, i got a section saying
 
 
apc
APC Support  enabled 
Version  3.0.8 
MMAP Support  Disabled 
Revision  $Revision: 3.68 $ 
Build Date  Mar 8 2006 20:46:13
 
 
After after two days, i found Apache getting down. I checked the apache error log at /var/log/httpd-error.log and found following error message
 
 
[Sat Mar 11 00:00:02 2006] [apc-error] apc_shm_create: shmget(0, 31457280,914) failed: Cannot allo
cate memory. It is possible that the chosen SHM segment size is higher than the operation system a
llows. Linux has usually a default limit of 32MB per segment.
[Sat Mar 11 15:30:13 2006] [warn] Init: Session Cache is not configured [hint: SSLSessionCache]
[Sat Mar 11 15:30:14 2006] [notice] Digest: generating secret for digest authentication …
[Sat Mar 11 15:30:14 2006] [notice] Digest: done
[Sat Mar 11 15:30:15 2006] [warn] pid file /var/run/httpd.pid overwritten — Unclean shutdown of p
revious Apache run?
Some thing wrong with APC, so i uninstalled it
 
server24# cd /usr/ports/www/pecl-APC
server24# make deinstall
Then edited /usr/local/etc/php.ini and removed following lines.
 
apc.enabled=”1″
apc.shm_size=”30″
 
I have been using eaccelerator with out any problem on my other servers, so have installed it, lets see if Apache have any problem with it.

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  • in perl-APC’s install document it says “apc.shm_size
    The size of each shared memory segment in MB.By default, some systems (including most BSD variants) have very low limits on the size of a shared memory segment. Default: 30)”

    it sounds like FreeBSD’s problem,
    I am still trying how to solve this problem….