Andrew MTU and Jumbo enable on Card go together.
Balanand Pinni SBC Services Inc. Work:314-206-5911 Pager:1-800-451-6897 Email ID :[EMAIL PROTECTED] [EMAIL PROTECTED] e.mail pager -----Original Message----- From: Andrew Carlson [mailto:[EMAIL PROTECTED]] Sent: Friday, July 26, 2002 2:52 PM To: [EMAIL PROTECTED] Subject: Re: Gigabit Ethernet Performance Has anyone experimented with Jumbo Packets, and it's impact on TSM? We are putting some money in the budget next year to get a switch and try it, I was just wondering if anyone already knows. Thanks. Andy Carlson |\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`' -. ;-;;,_ BJC Health Care |,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Wed, 24 Jul 2002, Zlatko Krastev wrote: > For sure numbers are not good. In customer environment we have achieved > 12-13MB/s average (with peaks of 25 MB/s) when using TSM client > compression and 60-70 MB/s without compression. These are real numbers > with TSM client and server and measured with topas and monitor. Yes, the > customer has EMC Symmetrix on the node and diskpool on IBM ESS but the > network might be pumped very good. > > Zlatko Krastev > IT Consultant > > > > > Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > cc: > > Subject: Gigabit Ethernet Performance > > Hi TSM-ers, > > our newly installed Gigabit Ethernet seems to have some performance > problems. > When I do the following FTP command between two UNIX (AIX) machines I only > get about 8Megabyte per second. > > # ftp 10.135.11.55 > Name: adminrt > Password: > ftp> put "|dd if=/dev/zero bs=32k count=10000" /dev/null > 200 PORT command successful. > 150 Opening data connection for /dev/null. > 10000+0 records in. > 10000+0 records out. > 226 Transfer complete. > 327680000 bytes sent in 39.5 seconds (8102 Kbytes/s) > local: |dd if=/dev/zero bs=32k count=10000 remote: /dev/null > > This command transfers data from nowhere to nowhere so no disk > is involved. The performance numbers only include network, network > adapter, > TCP/IP and a bit of UNIX. > Do you think 8MB/s is OK for Gigabit Ethernet? > Would anyone be so kind and test this command in their own UNIX > environment > and tell me the numbers? > > Thanks in advance and greetings from Austria > Thomas Rupp > Vorarlberger Illwerke AG > MAIL: [EMAIL PROTECTED] > TEL: ++43/5574/4991-251 > FAX: ++43/5574/4991-820-8251 > > > > ---------------------------------------------------------------------------- -------------- > Dieses eMail wurde auf Viren geprueft. > > Vorarlberger Illwerke AG > ---------------------------------------------------------------------------- -------------- >
