Hi, I'm getting a few Fg Writes in a day, what should I do to make them go away?

a have 120000 buffers

LRU min is 50 max is 60, the cleaners are set to 1 and lru's are 8.

I'm planing on changing the number of cleaners to 4, and lowering lru's to 30 and 20.

Any other sugestions?

well, "a few" FG writes is not bothersome, what's important is how this number relates to your LRU and Chunk writes. I suspect that with only one cleaner (Gag!) and your ratios set that high that you have a very high rate of chunk writes - which is what you really want to reduce. You have 60K dirty pages before you start to clean!

As a starting point, for cleaners, two per device. Drop your LRU max and min to as low as 5/2 or 2/1.