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Bug #58579 No space left on device bug
Submitted: 2009-03-09 12:35 UTC Modified: 2009-03-13 15:56 UTC
From: djonline at djonline dot ru Assigned:
Status: Not a bug Package: APC (PECL)
PHP Version: 5.2.5 OS: FC9
Private report: No CVE-ID: None
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 [2009-03-09 12:35 UTC] djonline at djonline dot ru 
Description:
------------
[apc-error] apc_sem_create: semget(0,...) failed: No space 
left on device

Server Software	Apache/2.2.9 (Fedora)
Shared Memory	1 Segment(s) with 32.0 MBytes 
(mmap memory, IPC semaphore locking)

 Free: 25.7 MBytes (80.5%)	 Hits: 19369 (99.2%)
 Used: 6.3 MBytes (19.5%)	 Misses: 155 (0.8%)

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 [2009-03-11 16:09 UTC] shire@php.net 
This is likely due to memory constraints on your system, or limitations on semaphores, not actually running out of APC cache space.

I would suggest, that you use pthread locking (default in the latest version) or spin locking (more experimental).  These shouldn't have the constraints you're seeing here and are preferred for your OS.  Let us know if these options cause problems for you.
 [2009-03-13 10:04 UTC] djonline at djonline dot ru 
Yes, now I user pthread locking.
But it is time to add information about semaphore 
limitations in FAQ, INSTALL and documentation APC.
There is nothing about new features in manual too (added 
with version 3.0.11).
 [2009-03-13 15:56 UTC] shire@php.net 
Yep, the documentation needs some updates and is on our list of things todo.  Thanks.
 [2009-04-21 15:43 UTC] emil at stoynev dot us 
Hello, I have the same problem, same situation, How can I fix it?

Thank you.

OS: FreeBSD 7.1 
Apache 2.2 , PECL/APC-3.0.19
 [2009-04-21 16:46 UTC] emil at stoynev dot us 
I fixed it, done.

Thanks.
 
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