php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login
Request #71854 FPM: Please make epoll sleep interval configurable
Submitted: 2016-03-18 16:17 UTC Modified: -
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:0 of 0 (0.0%)
From: elrond+php dot net at samba-tng dot org Assigned:
Status: Open Package: FPM related
PHP Version: 5.6.19 OS: Linux
Private report: No CVE-ID: None
View Add Comment Developer Edit
Anyone can comment on a bug. Have a simpler test case? Does it work for you on a different platform? Let us know!
Just going to say 'Me too!'? Don't clutter the database with that please — but make sure to vote on the bug!
Your email address:
MUST BE VALID
Solve the problem:
48 - 42 = ?
Subscribe to this entry?

 
 [2016-03-18 16:17 UTC] elrond+php dot net at samba-tng dot org
Description:
------------
FPM in ondemand mode seems a perfect tool for a server/laptop that is running php very seldom. On a laptop every wakeup is important, because it will bring the CPU usually to nearly full power.

Running FPM in this scenario wakes up the CPU every second. This sounds seldom for servers, but it's often on a laptop.

strace shows this nicely:
epoll_wait(10, {}, 1, 1000)             = 0

The relevant code is in sapi/fpm/fpm/fpm_events.c, function fpm_event_loop().
Especially the "timeout = 1000;".

It would be cool, if this would be configurable, so that one can set it to 100 sec for example.

Expected result:
----------------
much longer sleep periods, if desired.

Actual result:
--------------
wakeup every second.

Patches

Add a Patch

Pull Requests

Add a Pull Request

 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved.
Last updated: Fri Mar 29 09:01:28 2024 UTC