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Request #52166 REF: support ionice
Submitted: 2010-06-24 09:09 UTC Modified: -
Votes:5
Avg. Score:4.2 ± 0.7
Reproduced:4 of 5 (80.0%)
Same Version:1 (25.0%)
Same OS:2 (50.0%)
From: php at richardneill dot org Assigned:
Status: Open Package: Program Execution
PHP Version: Irrelevant OS: Linux
Private report: No CVE-ID: None
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 [2010-06-24 09:09 UTC] php at richardneill dot org 
Description:
------------
PHP has proc_nice(), but no corresponding proc_ionice().
This would be a very nice addition to have.

On most current computers, the CPU bandwidth is not the limiting factor, but 
I/O is. So a process that has been invoked with "nice -n 19" can still bring 
the system to a crawl if it does a lot of disk activity. The solution 
is "ionice -c3".

Typically: "nice -n 19 ionice -c3 $program"

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