2.2.X SMP CPU utilization issues .. Known ?

From: Patrick Cole (z@amused.net)
Date: Thu Feb 24 2000 - 16:32:14 EST


I have a dual celeron machine, and am having problems with 2.2.X. The problems
being that programs appear to be using almost half of my total processing
power, when they really should not, which is strange. Now the interesting
thing is that this problem does not occur in 2.3.X.

When I boot 2.2.15pre4:

[......]
  344 root 13 0 85812 43M 2268 R 0 17.4 17.9 157:22 XF86_SVGA
 9041 z 11 0 7044 7044 3856 S 0 14.7 2.8 0:12 xmms
 8754 z 9 0 7044 7044 3856 S 0 12.8 2.8 2:44 xmms
  419 z 11 0 484 484 192 S 0 12.6 0.1 166:07 wmfire
  421 z 8 0 424 268 204 S 0 11.4 0.1 114:35 wmsysmon
  424 z 8 0 340 220 160 S 0 10.8 0.0 109:55 wmifs
 9042 z 8 0 7044 7044 3856 R 0 10.2 2.8 0:09 xmms
  423 z 6 0 284 196 148 S 0 9.3 0.0 84:12 wmMoonClock
  427 z 6 0 460 328 272 S 0 9.3 0.1 76:03 wmWeather
  418 z 4 0 424 308 264 S 0 7.1 0.1 84:37
wmSpaceWeather
 8757 z 3 0 7044 7044 3856 S 0 6.9 2.8 1:18 xmms
 8967 z 3 0 3000 3000 1996 S 0 6.2 1.2 0:21 xfmail
 8756 z 4 0 7044 7044 3856 S 0 6.0 2.8 0:56 xmms
  422 z 3 0 980 980 580 S 0 5.2 0.3 66:27 wmxmms
  420 z 5 0 332 280 232 S 0 4.8 0.1 66:52 wmnet
 9071 z 7 0 1180 1180 884 S 0 4.6 0.4 0:00 wterm
  425 z 1 0 288 140 100 S 0 3.4 0.0 50:51 wmmixer
  434 z 1 0 160 144 108 S 0 3.2 0.0 36:27 fireload_cpu
  417 z 2 0 248 176 120 S 0 2.5 0.0 20:45 wmCalClock
  426 z 2 0 304 228 168 S 0 2.5 0.0 33:03 wmSMPmon
 9091 z 6 0 976 976 696 R 0 2.3 0.3 0:00 top
[......]

That is the output of top. All my monitoring applications report around 80% cpu
utilization, when none of those things really use that much processing power.
I don't know if this is my hardware, which I don't think it is, because I've
talked to at least two other people who have this problem, and it does not do
this when I boot with 2.3.47pre6 (I get near 0% - 3% utilization at idle,
which is really what it /should/ be).

So if anyone could shed some light, or information, I'd appreciate it.

Regards,

Patrick.

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