We had similar slowdowns, 5 to 30 seconds, at one point on a few of our servers, Exchange 5.5 NT4. We went back and forth with Microsoft for about 6 months, Finally somebody suggested trying to increase the default number of minimum and maximum information store threads. Default is min-10 and max 100. We increased the max to 200 and let it run for a while. It resolved our issues on that server so we deployed the changes to the other affected servers. You can see what your settings are at by running perfwiz from a command prompt with a (-r) switch for read only. I would also suggest taking a look at the Windows Task Manager and configuring it to show the threads column to get an idea of how many threads the store is using.
On another note, we have also noticed that sometimes attachments are slow to open when the antivirus software has not caught up with scanning attachments or when a server has been online for over 45 days. In our environment we have found that a good reboot is something that NT and Exchange enjoy. good luck, Rick Contier -----Original Message----- From: Schart, Vlastimil [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 28, 2001 2:27 AM To: MS-Exchange Admin Issues Subject: SV: Exchange Server - Outlook Client Slowdown How much RAM ? We have about the same number of users and had the same problems. The server had 740 KB. We changed to a new server with 2 GB RAM and the problems disappeared. Regards, Vlastimil > -----Opprinnelig melding----- > Fra: Leblanc, Shawn [SMTP:[EMAIL PROTECTED]] > Sendt: 27. november 2001 21:11 > Til: MS-Exchange Admin Issues > Emne: Exchange Server - Outlook Client Slowdown > > I am hoping someone out there is having some of the same issues as we are > having and have come up with some solutions. Any suggestions would be > very > much appreciated. > > Our current setup is; > > - Single Server Exchange Server Enterprise 5.5 Sp4 running OWA > - Compaq Server Dual PII 450 Xeon Processors > - 5 hard drives - 3 10,000rpm 36.4 GB drives in RAID 5 (Databases) > - 2 10,000rpm 9.1 GB drives in RAID 1 (Transaction > Logs) > - Server is running at 100mbps full duplex. > - Pub.edb = 150mb > - Priv.edb 18.5 GB (approx 40GB of free space) > - Circular Logging Turned off - Differential Arcserve Backup enabled > - 200 - 230 Users and 300 mailboxes > > Description > > For the past couple of weeks we have notice a perceptible slowdown in > client > side response times on our exchange server. The slowdown mainly happens > at > peak times,(9-10am and 2-3pm) however we have noticed it with attachments > and at other times as well. It sometimes can take 5-8 seconds to open an > e-mail with an attachment where we have been getting immediate response > before. For scrolling through messages in Outlook we have also noticed a > slow down. Also - when copying an attachment from an e-mail to your local > machine,(right click and copy, then paste to desktop) this response time > has > decrease dramatically. Although these slowdowns do not stop us from > working > on a daily basis we would like to get on top of this issue and do what we > need to do to keep our Exchange server speedy. > > Any ideas or recommendations are appreciated. > > Regards, > > _________________ > > Shawn M. Leblanc, Network Technician > BULL, HOUSSER & TUPPER > Vancouver, Canada > mailto:[EMAIL PROTECTED] http://www.bht.com > Tel: (604) 687-6575 or Direct # 641-4919 > Fax: (604) 641-4949 or Direct # 646-2500 > > Pager: (604) 650-4155 > > > This e-mail may be privileged or confidential. Any use of this e-mail by > an > unintended recipient is prohibited. > If you receive this e-mail in error, please call me immediately. > > > List Charter and FAQ at: > http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm +++The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and destroy any copies of this document.+++ List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
