Hi All I've been running some JetStress tests on my preproduction service and have received the results below. This is a general test to get me used to using the tool and to get some idea of what to expect. My conerns are that the Avg. Disk sec/Read is too high (the documentation says it should be 0.02!) and the Avg. Disk sec/Write is (consistently) extremely low. I'm assuming I've just configured it incorrectly but I'd be grateful for feedback on the results and where i may be going wrong :) Also does anyone else have comparative results and recommendations (or places to look) which compare, for example, the raid type, disk speed, number of disks used and similar to get a useful performance comparison of storage setup (hopeful I know :) ) Many Thanks Christopher StorageVolume Avg. Disk sec/Read Avg. Disk sec/Write Disk Reads/sec Disk Writes/sec Total Seconds U: 0.365 0.020 2922.62 0.003 775.32 U: 0.337 0.011 3233.32 0.002 622.43 U: 0.304 0.008 3661.97 0.001 452.49 U: 0.285 0.007 3913.77 0.001 456.32 U: 0.317 0.005 3541.06 0.001 874.50 This is an 8x15k disk, raid 5 array with 2048Mb cache for the databases and 2 x10K raid 1 for logs.
HP has some white papers about best pratices as well as performance validation tests: HP Blade System and Exchange 2003 Storage Performance (updated 2006-02-13) http://h71019.www7.hp.com/ActiveAnswers/cache/307647-0-0-225-121.html http://h71019.www7.hp.com/ActiveAnswers/downloads/RefConfig_Exchange2003_BladeSystem.pdf HP EVA 5000 and Exchange 2003 Storage Performance (updated: 2005-07-14) http://h71019.www7.hp.com/ActiveAnswers/cache/99158-0-0-225-121.html http://h71028.www7.hp.com/ActiveAnswers/downloads/Exchange2003EVA5000PerformanceWhitePaper.pdf I hope this link also can help you a bit: http://blogs.msdn.com/hmlee/archive/2006/03/06/544823.aspx -- Hyungmin Lee Blog about JetStress http://blogs.msdn.com/hmlee/ Software Dev Engineer/Test Exchange Customer Experience Solution Tools Group Microsoft Corporation This posting is provided "AS IS" with no warranties, and confers no rights. "BT" wrote in message news:ufIzXjQQGHA.2108@TK2MSFTNGP10.phx.gbl... > Hi All > > I've been running some JetStress tests on my preproduction service and > have received the results below. This is a general test to get me used to > using the tool and to get some idea of what to expect. My conerns are that > the Avg. Disk sec/Read is too high (the documentation says it should be > 0.02!) and the Avg. Disk sec/Write is (consistently) extremely low. I'm > assuming I've just configured it incorrectly but I'd be grateful for > feedback on the results and where i may be going wrong :) > > Also does anyone else have comparative results and recommendations (or > places to look) which compare, for example, the raid type, disk speed, > number of disks used and similar to get a useful performance comparison of > storage setup (hopeful I know :) ) > > Many Thanks > > Christopher > > StorageVolume Avg. Disk sec/Read Avg. Disk sec/Write Disk > Reads/sec Disk Writes/sec Total Seconds > U: 0.365 0.020 2922.62 > 0.003 775.32 > U: 0.337 0.011 3233.32 > 0.002 622.43 > U: 0.304 0.008 3661.97 > 0.001 452.49 > U: 0.285 0.007 3913.77 > 0.001 456.32 > U: 0.317 0.005 3541.06 > 0.001 874.50 > > This is an 8x15k disk, raid 5 array with 2048Mb cache for the databases > and 2 x10K raid 1 for logs. > >
