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Full Discussion: AIX 5.2 performance question
Operating Systems AIX AIX 5.2 performance question Post 302254273 by zaxxon on Tuesday 4th of November 2008 04:41:34 AM
Old 11-04-2008
Additionally in your iostat you can see that hdisk0 and hdisk1 are heavily busy. They are about ~90-100% busy all the time while you took the measurement.

Quote:
tty: tin tout avg-cpu: % user % sys % idle % iowait
1.0 4.0 1.5 6.0 1.5 91.0

Disks: % tm_act Kbps tps Kb_read Kb_wrtn
hdisk0 100.0 8704.0 272.0 4352 4352
hdisk3 0.0 0.0 0.0 0 0
hdisk1 98.0 700.0 163.0 0 700
hdisk2 0.0 0.0 0.0 0 0
It seems you have something on these disks which should be on separate disks. As Shockneck assumes too, that hdisk0 and hdisk1 belong to your rootvg, I'd say you check what kind of application data is placed in some LV there and move it to other disks to not hinder your rootvg.

Have a lspv to check what VGs are on hdisk0 and hdisk1, then have a lsvg -l on that VG to check what FS'es are there and try to move the stuff to disks that are not that busy or to new disks.

Then capture some seconds while this problem is occuring with filemon:
Code:
filemon -v -o fmon.out -O all

Stop this with "trcstop" after some 20-30 seconds.

You can check the file with
Code:
filemon -i fmon.out | more

You should see which LV etc. is the most busy to be sure what is making trouble there.
 

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X11PERFCOMP(1)						      General Commands Manual						    X11PERFCOMP(1)

NAME
x11perfcomp - X11 server performance comparison program SYNTAX
x11perfcomp [ -r | -ro ] [ -l label_file ] files DESCRIPTION
The x11perfcomp program merges the output of several x11perf(1) runs into a nice tabular format. It takes the results in each file, fills in any missing test results if necessary, and for each test shows the objects/second rate of each server. If invoked with the -r or -ro options, it shows the relative performance of each server to the first server. Normally, x11perfcomp uses the first file specified to determine which specific tests it should report on. Some (non-DEC :) servers may fail to perform all tests. In this case, x11perfcomp automatically substitutes in a rate of 0.0 objects/second. Since the first file determines which tests to report on, this file must contain a superset of the tests reported in the other files, else x11perfcomp will fail. You can provide an explicit list of tests to report on by using the -l switch to specify a file of labels. You can create a label file by using the -label option in x11perf. OPTIONS
x11perfcomp accepts the options listed below: -r Specifies that the output should also include relative server performance. -ro Specifies that the output should include only relative server performance. -l label_file Specifies a label file to use. X DEFAULTS
There are no X defaults used by this program. SEE ALSO
X(7), x11perf(1) AUTHORS
Mark Moraes wrote the original scripts to compare servers. Joel McCormack just munged them together a bit. X Version 11 x11perf 1.5.4 X11PERFCOMP(1)
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