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Very slow performance on application server

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itrc55
Regular Advisor

Very slow performance on application server

Dear,

i facing very slow performance on our application server, i not able to do any activity properly, a simple unzip and copy commands are taking long time to finish.
Waiting for your support.

Thanks
4 REPLIES
Bob_Vance
Esteemed Contributor

Re: Very slow performance on application server

what o/s?
# uname -a


First, run
# top

to see whether any processes are consuming the CPU.

bv
"The lyf so short, the craft so long to lerne." - Chaucer
Dennis Handly
Acclaimed Contributor

Re: Very slow performance on application server

Do you have glance installed?
What kind of server do you have and how many CPUs?
klb
Valued Contributor
Solution

Re: Very slow performance on application server



Use these tools to figure out what's going on

vmstat: command=vmstat 2
-- Will give one line report every 2 seconds showing general CPU info as well as paging/swap and some other info.

iostat: command=iostat 2
-- Will give report every 2 seconds listing I/O devices and their activity rate. Give you a good view of the amount of I/O going on.

top: command=top
-- lists a number of things, but mostly shows which processes are using CPU and at what rate

There are other tools, but these should get you a good feeling for what your system is doing in terms of CPU and I/O utilization.

Also, maybe you should check the syslog for any I/O errors ( /usr/adm/syslog/syslog.log ). I've see failed mirror member disks cause large I/O delays system wide, which can cause even regular command line commands to hang while the I/O subsystem waits for a timeout against a failed disk.

Hth,

-klb
itrc55
Regular Advisor

Re: Very slow performance on application server

Hi,

Thanks for All.