Re: Huge performance problem on Exchange 2003
- From: "zenner" <zenner@xxxxxxxxxxx>
- Date: Fri, 15 Jul 2005 13:42:13 GMT
What are the machine H/W specs?
If both systems run similar software and both development and production
systems are generally error free (assumes you have reviewed OS and Exchange
logs); them it is reasonable to suspect your "performance" issues may be a
result of Hardware being inadequate for the level of service.
Running SSL, HTTPS introduces additional CPU intensive computational stress
on the system. You didn't detail just how you configured your FE/BE setup,
the number of concurrent users or other activity indicators. So, on
speculation, in absence of other indicators...look at configuration (where
is SSL/HTTPS computation taking place, FE(?)) and how much horsepower do
your servers have.
"mustafa" <mustafa@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:C489D01D-6DC0-4014-928F-C8A111B885D2@xxxxxxxxxxxxxxxx
> Hi!
> We try to find out nearly for two weeks the problem source why our
> Exchange
> 2003 has very big performance problems. We found out this problem if the
> attachments to be downloaded by using RPC over HTTP (or RCP over HTTPS
> from
> outside) and OWA.
> After many tests in different physical network points, we found out that
> the
> problem is an internal problem (in Exchange 2003 networking +
> ActiveDirectory). But we don't yet know where the problem is in this
> network.
> We have following internal network structure:
> - Exchange Front-End Server (FE01) as Exchange Proxy server.
> - Exchange Back-End Server (BE01) as mailbox / public folder and offline
> address book server.
> - First Domain Controller (AD01) has all FSMO roles and first Global
> Catalog
> server.
> - Second Domain Controller as second Global Catalog Server
>
> Internal we did not implement HTTPS connections. Als servers communicate
> to
> each other without IPSec also.
> We have full duplex switches (100 MBit) and all network interfaces on the
> servers are 1000MBit interfaces.
> We have only 50 mailboxes and very low traffic in the exchange network.
>
> If the Outlook 2003 clients try to download any file (compressed or not)
> it
> takes these files to download very long. For example, the Outlook 2003
> needs
> for 12 MB file about 7 minutes( !!!) to download by using RPC over HTTP
> and
> about 80 seconds by using OWA!!!
> The Outlook 2003 state window shows (during attachment download) the
> following states:
> First,
> " ... synchroizing inbox folder,..." it takes about 30 seconds.
> After that it shows for the last download time following state:
> "offline address book connection will be established to Exchange
> server..."
>
> We have completely disabled anti virus and anti spam software on server.
> We
> tested also without any antivirus software on clients. But the same bad
> performance results!!!
> Unfortunately we did not exactly localize the problem source. We need
> help.
>
> Thanks in advance.
> Cicek
.
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