Re: 3Ware SATA Raid 9550SX Performance - different VM settings
by Simon at 12:30 13/09/07 (Forum::Technical Advice::General)
Based on a comment in this bugzilla thread, here are a couple of iozone + vmstat 1 tests run with:

/proc/sys/vm/dirty_expire_centisecs = 1000 (default is 3000)
/proc/sys/vm/dirty_ratio = 10 (default is 30)

but with no other tuning tweaks applied.

This change reduces the number of processes in 'b' state somewhat.

PDF file (118 K) Contrast different VM params
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