Category Archives: raid

StorMan Adaptec Controller Cheatsheet

Not really a MySQL related topic, but so I do not forget later on and for those who end up working with the StorMan CLI to manage their controller cards I thought I would publish my quick down and dirty … Continue reading

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Tease me, SUN SSD Benchmarks

Only a little over a week before the User conference and I am still burning the midnight oil to get as much information for my presentations as possible. I thought I would tease you a bit here. What do you … Continue reading

Posted in hardware, linux, Matt, mysql, performance, raid, Uncategorized | 5 Comments

Testing Performance on a Texas Memory System RAMSAN-500 pt3

This is part 3 in my RAMSan Series. While I am confident the read-only test was a reasonably good test ( I just needed to push more ), my mixed load test was marred by issues.  It was really a … Continue reading

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Testing Performance on a Texas Memory System RAMSAN-500 pt2

This is part 2 of My RAMSan Series. In my normal suite of benchmarks I typically run dbt2 & sysbench oltp benchmarks next…  and I did run then, but to be honest they just weren’t that interesting.  They showed an … Continue reading

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Testing Performance on a Texas Memory System RAMSAN-500

Well its about time I posted this:)  This is part 1 of 3 in my Ramsan series. For those who have paid attention to my blog, know I love talking  IO!  I also love performance.  Absolutely love it.  Love disk, … Continue reading

Posted in hardware, linux, mysql, performance, raid | 7 Comments

Intel x-25m80GB in the house…. woot!

Seeing my recent love affair with solid state drives I thought I would test drive one of the latest greatest drives out their the 80GB intel x-25m80GB.  Like a child on Christmas morning, I felt true excitement as the generic … Continue reading

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Dell/LSI Mega raid CLI command cheatsheet

Wanted to remember these for later: DELL PERC 6i & LSI RAID CHEAT SHEET: To add a RAID 10: ./MegaCli64 -CfgSpanAdd -R10 -Array0[17:0,17:1] -Array1[17:2,17:3] -Array2[17:4,17:5] -Array3[17:6,17:7] -Array4[17:8,17:9] WB NORA  -strpsz64 -a0 (WB is write back, WT is write through) (NORA … Continue reading

Posted in hardware, linux, raid | 1 Comment

Sysbench weirdness on SLES 10

Wanted to note some weirdness in using sysbench’s rnrd tests on SLES 10.  Running some bencharks for a client on their new SAN this week and ran into an interesting issue.  Whenever I run sysbench with the following: time sysbench … Continue reading

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SSD and MySQL Tests… The logic behind the tests & wondering did I break it?

Over the last several weeks I have been testing out the 2 mtron drives that easy computing company provided me. In fact I have been testing like a madman. Nightly I would kick off a batch of DBT2 tests, sysbench … Continue reading

Posted in hardware, linux, mysql, performance, raid | 4 Comments

XFS & Centos 5 & MySQL Performance

OK, Sometimes you stumble onto things that are just not right. On my own personal set of hardware (independent from the Server with the IBM Raid card) I am still running Tests with the Mtron flash drives. I noticed a … Continue reading

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