performance testing

Aug
23

Friends Don't Let Friends Run Oracle on ZFS

I frequently get asked why I recommend against running Oracle DBMS on ZFS, and instead recommend using ASM. The filesystem
7 min read
Jun
27

Flash testing tools - CrystalDiskMark

CrystalDiskMark is the type of tool I wouldn't even normally look at due to it's focus market, but one of
4 min read
Jun
26

Flash testing tools - Diskspd

Some time ago I wrote about Microsoft's storage performance testing tool SQLIO, with the conclusion that it was unsuitable for
2 min read
Jun
17

Vdbench Curve

Some time back I wrote about the relationship between Queue Depth, IOPS and Latency. This relationship can be particularly tricky
6 min read