I would say your two questions are very much related. I'm betting that your processor on your z/800 is maxed out. And since the intel processor is approximately 3 times faster than your z/800, guess what, it performs that much more work. More cycles allows for more work.
>I think we may have a performance problem. > >Our z/800 model 0LF is connected to an ESS800 with two Ficon channel >paths. We have been running dbench in Linux for quite a few weeks now >and we are seeing numbers much lower than we expected. Can someone >commnet on this? Are these numbers about what we should be seeing, or >is something wrong with our setup? > >We're running RHEL with kernel 2.4.21-1.1931.2.399.ent #1 SMP. Linux is >using a single 3390 DASD with ext3. > >Here are the numbers we're getting: >all tests were run on a single guest with no other Linux guests and just >a few z/VM service guests running. No disk intestive or CPU intensive >workload was running during the testing. > >dbench clients avg throughout (MB/s) >1 123.111 >3 116.729 >6 99.0626 >9 95.3577 >12 95.2825 >15 91.6009 >18 92.7745 >21 91.8808 >24 73.8885 > > >Here is what we get with our $1000 Dell Pentiium 2.4Ghz server with a >SCSI disk. > >1 395.545 >3 281.957 >6 275.292 >9 285.756 >12 262.4333 >15 248.314 >18 237.879 >21 221.74355 >24 200.873 > > >As you can see, the $1k Dell is hammering our $250k mainframe. We are >currently trying to figure out why this is and hopefully fix the problem >if there is indeed a problem... Any comments or help that anyone could >give woule be appreciated. > >- Jason Herne ([EMAIL PROTECTED]) > Clarkson University Open Source Institute > z/Server Administrator "If you can't measure it, I'm Just NOT interested!"(tm) /************************************************************/ Barton Robinson - CBW Internet: [EMAIL PROTECTED] Velocity Software, Inc Mailing Address: 196-D Castro Street P.O. Box 390640 Mountain View, CA 94041 Mountain View, CA 94039-0640 VM Performance Hotline: 650-964-8867 Fax: 650-964-9012 Web Page: WWW.VELOCITY-SOFTWARE.COM /************************************************************/
