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Bug #56501 num_seg set incorrectly
Submitted: 2005-08-18 14:01 UTC Modified: 2005-08-19 01:26 UTC
From: richard at designeffect dot com Assigned:
Status: Suspended Package: APC (PECL)
PHP Version: 4.3.10 OS: Fedora Core 1 & Centos 3.5
Private report: No CVE-ID: None
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 [2005-08-18 14:01 UTC] richard at designeffect dot com
Description:
------------
APC 3.0.7, installed using --enable-apc-mmap=yes --with-apxs

I could be misinterpeting what is supposed to be happening, 
but the value of num_seg seems to be being set incorrectly 
in the apc_sma_info() array

The config setting in php.ini are:
apc.shm_segments = 2
apc_shm_size = 32

The apc_sma_info() shows:
[num_seg] => 1 
[seg_size] => 33554432

apc.php seems to only show one segment being used as well, 
though I'm not sure if that's because it's getting the wrong 
value from apc_sma_info(), or whether it truly is only using 
one segment.


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 [2005-08-19 01:26 UTC] rasmus@php.net
There is no real reason to use 2 segments in mmap mode though.  The 32M segment limit only applies to the shm mechanism on some operating systems, but since mmap support was added you really should be using a single mmap segment and set it to whatever size you need.  I'll clean up the code a bit eventually to better reflect that, but right now I won't worry too much about it.
 
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