From: Eiler, James A. (James.Eiler@alcoa.com)
Date: Tue Oct 29 2002 - 17:36:29 EST
original message below.
Everybody told me the same thing....
Bottom line: read and COMPREHEND the man page for vmstat!
Per Brian Staab:
"The first line of vmstat shows statistics since boot time. All
subsequent lines show current real-time stats. It's very misleading to
use the single line of output."
I was confused by the CPU idle (id) going to zero after the first
line of "vmstat 1". Turns out I DO have something going on that's
utilizing all of my CPU.
Thanks to:
Dr Thomas.Blinn
Steve Feehan
Dan Price
Brian Staab
-----Original Message-----
From: Eiler, James A. [mailto:James.Eiler@alcoa.com]
Sent: Tuesday, October 29, 2002 3:45 PM
To: 'Tru64-unix-managers@ornl.gov'
Cc: Emerson, Ken R.
Subject: vmstat and system utilization on 5.1A PK3
All,
We've added PK3 and have noticed that the system utilization numbers from
"vmstat 1" don't seem to make sense any more.
If I do a series of vmstat commands, the utilization looks as follows:
ager99>vmstat
Virtual Memory Statistics: (pagesize = 8192)
procs memory pages intr cpu
r w u act free wire fault cow zero react pin pout in sy cs us
sy id
7 621 27 46K 5529 10K 37M 5M 12M 367 7M 0 459 381K 1K 9
34 57
ager99>vmstat
Virtual Memory Statistics: (pagesize = 8192)
procs memory pages intr cpu
r w u act free wire fault cow zero react pin pout in sy cs us
sy id
9 619 27 46K 5529 10K 37M 5M 12M 367 7M 0 459 381K 1K 9
34 57
ager99>vmstat
Virtual Memory Statistics: (pagesize = 8192)
procs memory pages intr cpu
r w u act free wire fault cow zero react pin pout in sy cs us
sy id
7 621 27 46K 5529 10K 37M 5M 12M 367 7M 0 459 381K 1K 9
34 57
But if I use the 1 second option, the first line printed looks like the
others, then the succeeding lines look strange (including "fault cow zero
react pin"):
ager99>vmstat 1
Virtual Memory Statistics: (pagesize = 8192)
procs memory pages intr cpu
r w u act free wire fault cow zero react pin pout in sy cs us
sy id
8 620 27 46K 5529 10K 37M 5M 12M 367 7M 0 459 381K 1K 9
34 57
5 623 27 46K 5527 10K 2 16 19 0 28 0 1K 882K 2K 22
78 0
5 623 27 46K 5528 10K 0 0 0 0 0 0 998 892K 2K 22
78 0
9 619 27 46K 5528 10K 0 0 0 0 0 0 978 897K 2K 22
78 0
7 621 27 46K 5528 10K 0 0 0 0 0 0 1K 880K 2K 23
77 0
8 620 27 46K 5528 10K 0 0 0 0 0 0 1K 885K 2K 21
79 0
8 620 27 46K 5528 10K 0 0 0 0 0 0 1K 883K 2K 23
77 0
Did something get broken in PK3?
Thanks!
Jim
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