[Bug 821950] Re: hybserv needlessly wakes up every 200 microseconds

Ubuntu Foundation's Bug Bot 821950 at bugs.launchpad.net
Tue Mar 27 12:17:17 UTC 2012


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** Tags added: patch

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https://bugs.launchpad.net/bugs/821950

Title:
  hybserv needlessly wakes up every 200 microseconds

Status in “hybserv” package in Ubuntu:
  New

Bug description:
  Hybserv (src/sock.c) calls select() with a 200μs timeout in a loop
  which effectively just repeats the call if no activity was detected.
  This is a problem for CPU power management (the CPU can't go to sleep
  even if hybserv appears idle).

  This behaviour is present in at least 1.9.2-4.1, i.e. at least in
  lucid, maverick, natty and oneiric.

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