On 10.12 15:28, Martin Marji Cermak wrote:
> At the moment, I have 3 SCSI disks, 36 GB, 10K, so my cache_dir is:
> My boss just gave me another two SCSI disk, 70 GB, 15K - he wants me to
> maximise "Byte hit ratio" and I believe to have bigger cache is the
> right way (I have already set LFUDA replacement policy etc).
> I am going to add these two disk to the box, how would you use them, so
> you get the best performance?
> 1) add 2 new cache_dirs
> 56 GB cache on every from these two 70GB disks?
> 2) add 4 new cache_dirs
> two 28 cache on every from these two 70GB disks?
> I prefer the first solution, but does it realy matter?
Imho it is a bad idea to use two cache dirs on one disk. Use 1). iirc, you
have very big maximum_object_size, so you should get bigger byte hit
ratio. however you may need to increase your RAM size.
-- Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. I feel like I'm diagonally parked in a parallel universe.Received on Fri Dec 10 2004 - 02:46:44 MST
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