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тАО06-04-2011 03:54 AM
тАО06-04-2011 03:54 AM
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
Solved! Go to Solution.
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тАО06-04-2011 04:09 AM
тАО06-04-2011 04:09 AM
Re: Very slow performance on application server
# uname -a
First, run
# top
to see whether any processes are consuming the CPU.
bv
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тАО06-04-2011 09:03 AM
тАО06-04-2011 09:03 AM
Re: Very slow performance on application server
What kind of server do you have and how many CPUs?
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тАО06-04-2011 10:31 AM
тАО06-04-2011 10:31 AM
SolutionUse 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
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тАО06-05-2011 12:56 AM
тАО06-05-2011 12:56 AM
Re: Very slow performance on application server
Thanks for All.