Re: Exchange performance help

In my experience, about 90% of the time the popup is caused by disk I/O
problems, and the most useful counters are your Average Disk Sec/Read and
/Write. I see those included in your post and the average read time of
0.026 could be a problem. Usually anything less than 20 milliseconds is
considered good, between 20 and 50 is OK and above 50 is bad. How long was
the perfmon run to get that average? During the day are their spikes where
that counter is high for several minutes? The peak time of .227 is pretty
high. What I've seen is that it's usually the worst first thing in the
morning when everyone gets in, so i would typically run a perfmon for the
first couple of hours each day, log it to a file and review the results.

How many users are on the server and how many physical disks make up the
database drive? One thing that I've seen cause a lot of I/O on servers, is
desktop search software. If a lot of your users are running that you could
maybe try and have them disable it.

--
Chad
M3 PostMasters
M3PostMasters@xxxxxxxxxxxxxxx
M3 Technology Group
www.m3postmasters.com


"UselessUser" <UselessUser@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:4D6E1883-8FF5-4BAC-807A-6C4D608F7B7E@xxxxxxxxxxxxxxxx
Hi all,

We are occasionally getting the "Outlook is trying to get data from
<Exchange Server>" message in Outlook. (Especially when trying to open
other
people's calendars) I am attempting to troubleshoot this. I have found the
following articles:

http://support.microsoft.com/?id=839862
http://support.microsoft.com/kb/892764

We are getting the 9548 warnings about master sid approximately 15-30
times
a minute, I believe that this issue will be resolved automatically the
next
time we plan downtime to patch Exchange (Currently on store.exe 7638 SP2).

So I decided to look at the performance monitors as the article suggests,
but the problem is while I am doing this, I cannot tell what the values
mean... Are they in milliseconds etc? Here is a snapshot of what I have...

RPC Averaged Latency - Last 0 Average 4 Minium 0 Maximum 11
RPC Operations/Sec - Last 1192.291 Average 161.726 Minimum 2.985 Maximum
1460.323
RPC Requests - Last 0 Average 0 Minimum 0 Maximum 4
Processor Time - Last 7.026 Average 3.530 Minimum 0 Maximum 10.479
Log Record Stalls/sec - Last 0 Average 0.182 Minimum 0 Maximum 9.955
Average Disk Sec/Read - Last 0.006 Average 0.026 Minimum 0 Maximum 0.227
Average Disk Sec/Write - Last 0 Average 0.015 Minimum 0 Maximum 0.037
Current Disk Queue Length - Last 0 Average 1 Minium 0 Maximum 91

How does this look? Also what counter can I use to see the impact of the
accounts with no master sid (Or zombie users?)

Many Thanks


.

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