Sponsored Content
Full Discussion: IO performance symptoms
Special Forums Hardware Filesystems, Disks and Memory IO performance symptoms Post 302345254 by zxmaus on Tuesday 18th of August 2009 06:23:19 PM
Old 08-18-2009
Vada,

disks are only thrashing when you are very low in memory and your systems is permanently paging in and out.

Disks being busy up to 70% is normal on AIX and no reason for concern ... are you trying to investigate high IO waits from cpu? What kind of applications do you run?

I agree with DukeNuke, it would be more helpful if we could see your stats to tell you more than fishing in the dark.

Rgds
zxmaus
 

8 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Performance

Hello, i have changed a slow server with Solaris 7 to a bigger one with Solaris 8 (Sun Ultra 2). Now i have a real bad performance problem (only CPU). Solaris 7 ran with standard FTP and Samba 2.0.7. The new machine is running ProFTP and Samba 2.0.9. There are a lot of NFS Shares and... (5 Replies)
Discussion started by: olso
5 Replies

2. UNIX for Advanced & Expert Users

performance

Hi, 1-in vmstat commande line, in reply, which column is the more important to look and verify if server is very slow ? 2-how can I see how many sessions are opened with the same login ? Many thanks before. (2 Replies)
Discussion started by: big123456
2 Replies

3. UNIX for Advanced & Expert Users

performance

Hi, I have this on a AIX UNIX machine : ps aux| head -20 USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND root 516 23.7 0.0 12 15808 - A 19:38:15 903:13 wait root 774 23.7 0.0 12 15808 - A 19:38:15 902:13 wait root 1290 23.6 0.0 ... (2 Replies)
Discussion started by: big123456
2 Replies

4. UNIX for Advanced & Expert Users

I/O performance

i want to determine I/O performance of an executable, but iostat dont give correct results because the disk that i am writing to and reading from, are not physical disk of the host machine, instead of these local disks we are using a network storage. is there any standard way in unix to get... (2 Replies)
Discussion started by: gfhgfnhhn
2 Replies

5. News, Links, Events and Announcements

Announcing collectl - new performance linux performance monitor

About 4 years ago I wrote this tool inspired by Rob Urban's collect tool for DEC's Tru64 Unix. What makes this tool as different as collect was in its day is its ability to run at a low overhead and collect tons of stuff. I've expanded the general concept and even include data not available in... (0 Replies)
Discussion started by: MarkSeger
0 Replies

6. Solaris

best way and best performance

Hi all, I have two storadge 3510 Fc .. with 12 disks 146Gb ..total 1752Gb each storadge. I need to use about 1.4 Tb of it. and want RAID1 .. I need 13 mount points .. So question: for best performance and redundjancy how I must do it. create 13 logical drives on each stordge with same size... (1 Reply)
Discussion started by: samar
1 Replies

7. Solaris

troubleshooting log detailing symptoms/error msgs/fix actions for NIS+ client authent

summary found at bottom. to skip straight to action summary, ctrl+f for <summary> this initially started with trouble changing passwords due to client being unable to authenticate, this was further caused by missing client files. This was transparent to me, so this details the road I took,... (0 Replies)
Discussion started by: ProGrammar
0 Replies

8. Solaris

A DT Message error on login... other symptoms

First let me apologize for joining and posting... but this thing is killing me. I can usually solve these problems myself but I am reaching for help now. I have about 2 years Unix 8 experience but I am by no means an expert but not a newb either. A little background. My system runs a... (8 Replies)
Discussion started by: mpb218
8 Replies
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(7x), x11perf(1) AUTHORS
Mark Moraes wrote the original scripts to compare servers. Joel McCormack just munged them together a bit. X Version 11 Release 6.6 X11PERFCOMP(1)
All times are GMT -4. The time now is 06:24 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy