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Re: How big to make Large IO cache pools ?

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Thanks that certainly agrees with much of what we've found by trial and error.

 

 

Considering our default data cache


 

IOBufferSizeAllocatedKBPagesTouchedPagesReadCacheName
16k31744000     7,312,309  98,242,928default data cache23.04
128k10240000        479,160  71,024,280default data cache4.68


The PagesTouched/Allocated shows the 16k pool a lot more than the 128k and year the pages read from each cache is very similar 98m vs 71m.

So I guess we're reading a lot of pages from the large IO pool but very few of them.


Thanks again




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