Re: ADSM paging I/O
1998-04-09 00:05:42
Subject: |
Re: ADSM paging I/O |
From: |
Michael Kaczmarski <kacz AT US.IBM DOT COM> |
Date: |
Thu, 9 Apr 1998 00:05:42 -0400 |
I do not believe that the server DB or LOG I/O are considered paging I/O. It
seems that you are memory
constrained
Mike Kaczmarski
IBM Corporation
ADSM Development
kacz AT us.ibm DOT com
ADSM-L AT VM.MARIST DOT EDU on 04/08/98 06:12:38 PM
Please respond to ADSM-L AT VM.MARIST DOT EDU
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: ADSM paging I/O
Does anyone know whether ADSM database (or Log) I/O is considered as paging
I/O? I am using the "monitor" utility and am seeing what appears to be a
rather high paging rate, and do not understand what is causing it. The I/O
rate to the disk containing the swap space shows virtually nothing. Here's
an example:
Memory Real Virtual Paging (4kB) Process events File/TTY-IO
free 0.5 MB 665.8 MB 109.0 pgfaults 2393 pswitch 51 iget
total 511.3 MB 768.0 MB 431.6 pgin 4271 syscall 22 namei
191.0 pgout 485 read 51 dirblk
DiskIO read write busy 0.0 pgsin 146 write 1807605 readch
hdisk0 0.0 0.0 kB/s 0% 0.0 pgsout 0 fork 2158896 writech
hdisk1 0.0 0.0 kB/s 0% 0 exec 0 ttyrawch
hdisk2 75.7 19.4 kB/s 9% Client Server NFS/s 0 rcvint 0 ttycanch
hdisk3 89.5 91.1 kB/s 6% 0.0 0.0 calls 0 xmtint 169 ttyoutch
hdisk4 6.3 41.6 kB/s 13% 0.0 0.0 retry
hdisk5 80.8 6.7 kB/s 4% 0.0 0.0 getattr Netw read write
hdisk6 817.0 26.2 kB/s 24% 0.0 0.0 lookup lo0 0.0 0.0 kB/s
hdisk7 0.0 0.0 kB/s 0% 0.0 0.0 read 0 0.0 0.0 kB/s
hdisk8 30.1 128.8 kB/s 6% 0.0 0.0 write
hdisk9 21.4 63.0 kB/s 27% 0.0 0.0 other
There are actually more disks, but monitor does not show them. All swap
space is on hdisk0, which shows 0.0kB/s. But the page rate is rather high.
This is for a 10 second interval.
Thanks for any clues.
..Paul
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