ADSM-L

ADSM paging I/O

1998-04-08 20:48:47
Subject: ADSM paging I/O
From: Paul Zarnowski <vkm AT CORNELLC.CIT.CORNELL DOT EDU>
Date: Wed, 8 Apr 1998 20:48:47 -0400
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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