I/O Error with PHP5-FPM, ptrace(PEEKDATA) failed

Posted by MultiformeIngegno on Server Fault See other posts from Server Fault or by MultiformeIngegno
Published on 2012-07-10T20:15:59Z Indexed on 2012/07/10 21:18 UTC
Read the original article Hit count: 524

Filed under:

php

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php5

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php5-fpm

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apc

I got a lot of these:

[NOTICE] child 19214 stopped for tracing 
[NOTICE] about to trace 19214 
[ERROR] ptrace(PEEKDATA) failed: Input/output error (5) 
[NOTICE] finished trace of 19214 
[WARNING] [pool www] child 19208, script 'blahblah.php' executing too slow (30.041419 sec), logging 
[NOTICE] child 19208 stopped for tracing 
[NOTICE] about to trace 19208 
[ERROR] ptrace(PEEKDATA) failed: Input/output error (5) 
[NOTICE] finished trace of 19208 
[WARNING] [pool www] child 19218, script 'blahblah.php' executing too slow (30.035029 sec), logging

And when php reaches max children (at least I presume that's the case) it stops "working"... now I know I can increase max_children (currently set to 9) but there's a way to stop php from "dying"?

I'm on a VPS with 1 core and 512 MB of RAM (PHP5-FPM 5.4.4 + APC 3.1.10).

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