Re: Exchange 2003 Performance - Excessive RPC Ops & MAPI Connections?

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

I think I worked the average of ALL 700+ users out to 200MB. The top 20
people I hate.. err.. users, are near the 1GB mark with ~12,000 avg items.
These top 20 also all happen to be amongst the 70 BES users.

<jamestechman@xxxxxxxxx> wrote in message
news:1156881434.116118.41620@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
How big are your user's MB, in particular your BES users.

James Chong
MCSE M+, S+, MCTS, Security+
msexchangetips.blogspot.com

exx wrote:
I'm experiencing some performance issues with Exchange2003. Basically the
Outlook dialog box occasionally pops up saying it's trying to retrieve
data
from the Exchange server. I've run a lot of stats and have determined
that
for the most part it's Disk I/O so I've been working on that, but I'm
beginning to think the load generated on the server and causing the high
Disk I/O may be due to the unusually high RPC ops.

Current Disk Config is:
C: - Raid1 (2 disks) - Pagefile, Temp, Tracking Logs
D: - Raid5 (3 disks) - DB, Queues
E: - SAN - Transaction Logs
For the above disk config I will be adding a few more disks shortly to
spread everything out.

I've run the Exchange Performance analyzer which has basically come back
and
reported that there is excessive RPC usage on the server (0.372
operations/sec) when the suggested max is 0.25. I've installed Quest
Spotlight on Exchange which shows a great deal of useful information..
but
I'm scratching my head over these figures:

545 Connected Users - This sounds right.
1140 Active Connections in the last 10 minutes
3110 MAPI Connections

Any ideas why the MAPI connections would be so high? That seems excessive
to
me.
I'd break down the 545 currently connected users into:
60 OWA
40 RPC over HTTP (Currently not configured for cached mode. I've read
this
should be changed. Thoughts?)
445 Outlook (None should be in cached mode. Is there an easy way to tell
in
ExMon?)

Also, we have 70 BES (Blackberry Enterprise Server) users.

Any suggestions on how I can track this down further? I'm running ExMon
on
the server. There is no single user that really sticks out, just
occasional
CPU % spikes by what appears to be mostly BES users.

Thanks!



.

Relevant Pages

  • Re: Exchange 2003 Performance - Excessive RPC Ops & MAPI Connections?
    ... probably have 20 Entourage clients though I've never thought much of it. ... from the Exchange server. ... Disk I/O may be due to the unusually high RPC ops. ... 1140 Active Connections in the last 10 minutes ...
    (microsoft.public.exchange.admin)
  • Re: Exchange 2003 Performance - Excessive RPC Ops & MAPI Connections?
    ... How big are your user's MB, in particular your BES users. ... from the Exchange server. ... Disk I/O may be due to the unusually high RPC ops. ... 1140 Active Connections in the last 10 minutes ...
    (microsoft.public.exchange.admin)
  • Re: State Threads
    ... WN> application to handle 100K socket connections? ... In case you only want to have a web server, ... thread restores the execution context, in a TP system it would be the ... problems with blocking on disk IO, because if a thread needs to block, ...
    (comp.lang.ada)
  • Exchange 2003 Performance - Excessive RPC Ops & MAPI Connections?
    ... from the Exchange server. ... Disk I/O may be due to the unusually high RPC ops. ... 1140 Active Connections in the last 10 minutes ...
    (microsoft.public.exchange.admin)
  • hai...find me a solution in M5000 server
    ... series server. ... B B B B B i want to do install one more solaris Over there. ... Solaris cannot see all drives on Areca RAID controller ... popped it (a single disk at this point) into machine1. ...
    (SunManagers)