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asvc_t, wsvc_t values from iostat command output [message #639046] Tue, 30 June 2015 02:15 Go to next message
Messages: 36
Registered: September 2006
Location: CHENNAI
Dear All,

We are running a huge process in parallel sessions and monitored iostat command.

Noticed that asvc_t & wsvc_t values in iostat command outputs are mostly more than 50. I found the following detail from an alternate site "http://www.unixarena.com/2012/07/performance-issues-on-solaris-page1.html"
1.asvc_t average service time of active transactions, in milliseconds. If the average service time is exceeding more than 25, then there is issue in the specific disk and need attention.
2.wsvc_t average service time in wait queue, in milliseconds. If the wait queue is crossed more than 10 then we need to check with SAN team regarding this.
Please let me know whether the above statements are true? Kindly note that the same process is running in other clients without any performance bottlenecks. So I believe that the problem is with current disk & SAN configuration.

Please clarify.
Re: asvc_t, wsvc_t values from iostat command output [message #639048 is a reply to message #639046] Tue, 30 June 2015 02:44 Go to previous message
Michel Cadot
Messages: 68653
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
This question bears no real connection with Oracle database.
Please find a more appropriate forum.
The topic is locked. /forum/fa/448/0/
If I'm wrong, please, PM me (or report this message to a moderator, explain why you think it should be unlocked and it might be done).
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