Test: Zfs «l2arc» with Intel SSD

Simple test to validate that my new SSD was not a waste of money. The test was made from a Windows xp virtual machine with iometer to generate I/O to a CIFS share on my file server “Solaris 11 Express”.

test	Test details	Test file size	L2arc SSD «in»	Average response time ms	iops	Explanation
1	Random 4k read	3GB	No	0.4	9517	3Gb fit in ram «arc»
2	Random 4k read	30GB	No	33.8	118	No ssd cache and 30GB is to big to fit in arc.. so I hit arc and the disk
3	Random 4k read	30GB	Yes	9.7	411	«l2arc» is configure and can contain 30GB but have to «warm»
4	Random 4k read	30GB	Yes	2.7	1482	Same as 3 but l2arc is warm
5	Random 4k read (more workers)	30GB	Yes	2.5	1625	Same as 4 but with more iometer workers

Test1

Test2

Test3

Test4

zpool iostat -v data

Test5

Another interesting post on the subject: http://blogs.sun.com/brendan/entry/test