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Re: [Networker] mminfo slow to respond
2009-10-12 16:23:18
Rudy Munguia wrote:
The nsr and mm directories are on the same ufs filesystem, The index is on a
separate san attached 1.2TB volume. There are 28 1.2 TB AFTD's supporting DBO
operations. All SAN disk are provided by a Clariion cx700. Average utilization
of the system is 78% and the dev i/o waits are nothing to worry about.
i tried attaching the output requested, but there were over 10,000 lines which
was bounced by the listserver.
Actually I was able to look at it. I cannot explain what I see. Can
you run truss on the mminfo process and see if you can understand what
is it waiting for ? If you don't understand the output send a hundred or
so lines.
The system time (in sar -u output) does not make much sense. It
should indicate lots of I/O but in your case the disks are not busy at all.
Are you sure your SAN drivers are OK ?
Do you observe any other slowness of the system ?
Can you explain the high system time, or correlate it to another
activity currently happening on the system ?
What do you see in top ?
Do you see any relevant messages in /var/adm/messages or dmesg ?
I have in /etc/syslog.conf:
kern.debug /var/adm/kernel
Are you sure the Clariion is not very busy ? Do you share it with
anyone ? Do you have your own RAID group ?
________________________________
From: Yaron Zabary <yaron AT ARISTO.TAU.AC DOT IL>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Sent: Sunday, October 11, 2009 3:57:49 AM
Subject: Re: [Networker] mminfo slow to respond
I have seen similar problems if your /nsr is on the same file system with an
aftd device.
What is the output of
df -h /nsr/mm
df -h /nsr/index
df -h /nsr/res
And while the mminfo is running:
sar -d 1 10
sar -u 1 10
Rudy Munguia wrote:
Hello,
I am running a very simple mminfo query 'mminfo -avc xyz -r"volume"' in order
to find all tapes that contain savesets for the particular client. The first query took
about 20hours, the second took about 30, the third query has been running for 4 days now.
This is running on 7.4.4 on Solaris 9 on a Sun V440 with 4 Processors and 8GB
of RAM. It handles only about 300 clients. We have a total library of only
14,000 tapes.
I have about 50 more clients that I need to run this same query for.
Any suggestions?
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--
-- Yaron.
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