On Wed, 2007-05-09 at 00:50 +0800, mcclnx mcc wrote: > Thanks for answaer. > > 1. If "w" and "top" does NOT show real CPU load, then > how to check real CPU load? > > 2. How to check which process cause high load on "w" > and "top"? > > Thanks. > In your case, you have 2 Zombie processes ... and one running process. Since those == 3 ... I would suspect that they are driving your load up ... although that might not be the case. This will tell you how to find Zombies: http://www.debian-administration.org/articles/261 I would start there. Thanks, Johnny Hughes > --- Jim Perrin <jperrin at gmail.com> 說： > > > On 5/8/07, mcclnx mcc <mcclnx at yahoo.com.tw> wrote: > > > Recently we installed CENTOS 4.4 on DELL 2650 > > server. > > > We found CPU load always on 3 and up if we run > > "top" > > > or "w" to check. There is NO application run on > > this > > > server why CPU load so heavy? > > > > Load showed by top and w isn't cpu usage. The load > > average is the sum > > of the run queue length and the number of jobs > > currently running on > > the CPUs. If you have a process waiting to access > > the disk for > > something, you can drive your load average pretty > > high, while using > > virtually no cpu. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.centos.org/pipermail/centos/attachments/20070509/31e4cbae/attachment-0004.sig>