lkml.org 
[lkml]   [2012]   [May]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [3.2.16 -> 3.2.17 regression] High reported CPU load when idle
From
>>>>> "DS" == Doug Smythies <dsmythies@telus.net> writes:

DS> This statement: "Starting with 3.2.17-1, the CPU load accounting is broken when the computer is idle. The CPU load is reported as >0.50 when idle. 3.2.16-1 don't suffer from this problem."
DS> In my opinion has the following mistakes:
DS> . The computer is not actually idle. If it was actually idle the reported load average would be 0.

Well, I tested in single user mode, with very few processes running,
mostly init, getty, bash and top (+ a lot of kernel threads). And
3.2.17 reported a load of >0.5 . Under the same conditions 3.2.16
typically reports 0.01 or 0.00 .

DS> . Yes, the new kernel reported load average is high, as detailed in the PNG file or the web notes.
DS> . The older kernel suffers from a different problem, under all other conditions being the same, the reported load average would have been too low.

I don't know if 0.01 is *too* low, but it should be much closer to the
truth than >0.5.

/ Anders


\
 
 \ /
  Last update: 2012-05-30 22:21    [W:0.109 / U:0.468 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site