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Bug #57637 100% fragmentation make apache run verrrry slow
Submitted: 2007-04-26 17:43 UTC Modified: 2009-03-02 03:15 UTC
From: roberto at spadim dot com dot br Assigned:
Status: Closed Package: APC (PECL)
PHP Version: 5.2.1 OS: LINUX ARCHLINUX 0.8 64bits
Private report: No CVE-ID: None
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From: roberto at spadim dot com dot br
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 [2007-04-26 17:43 UTC] roberto at spadim dot com dot br
Description:
------------
i was running my apache 2.2.4 with php 5.2.1, it's with 30mb of shared memory, after some ttl user variables cache, my fragmentation got 100%, apache start running very slow CPU usage go to 100% in each apache process (2 processor, 2 100% cpu usage)


Reproduce code:
---------------
make fragmentation very big (100%) using ttl user variables more some files

Expected result:
----------------
stop apc and make a cleanup of all memory

Actual result:
--------------
don't flush memory and apache get crasy because my programs don't check if the apc_set work ok

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AllCommentsChangesGit/SVN commitsRelated reports
 [2007-04-26 17:50 UTC] wiesemann@php.net
(package selection corrected)
 [2007-05-03 09:03 UTC] gopalv82 at yahoo dot com
I suppose bug 10852 is related to this too ?
 [2009-03-02 03:15 UTC] shire@php.net
Marking this as closed, as high fragmentation shouldn't be the performance hit it used to be, please try the latest CVS version and report any success/issues.
 
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