timo.dudziak@student.uni-siegen.de wrote:
> cache_dir [ufs | asyncufs] dir MB L1 L2
> perfect for ext2:
> L2 := 256
> L1 := ceil( MB / 416 )
> so why / 416 ?
Because someone simplified the calcuation for you by eleminating all
constants.
L2 = 256 (there is generally no reason to change this on
ext2/ext3/ufs/whatever with a similar directory structure)
L1 = ceil( MB * 1024 / (2 * average_object_size * L2 * L2))
MB = size of the cache in MB
2 = a safety margin
1024 = conversion factor from MB to KB
average_object_size = 13 KB (farily standard)
For reiserfs there MAY be a slight benefit in increasing L2 somewhat,
but not too much. There is only marginal differences in tuning this
parameter.
Regards
Henrik Nordström
Squid Hacker
Received on Wed Oct 24 2001 - 17:39:21 MDT
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