On 6/3/11 10:33 AM, prad wrote:
> i'm new to xfs (courtesy of most helpful and encouraging commentary by
> stan hoeppner!) and i've seen some advice which says to make the
> block size -> 512
> directory size -> 4096
> on the other hand, i've also come across webpages which say don't mess
> around! keep the defaults as they are unless you are absolutely sure
> that changing it suits your purpose and know why.
Yup. See "Q: I want to tune my XFS filesystems for <something> "
> my question is for the data storage area on a web/email server. we're
> mainly going to have small files there and the email part will have only
> temporary files for the most part since people will download (ie pop).
> it makes sense to make the block size = 512, but i wonder if it really
> matters noticeably. the server is not a heavily visited one and only on
> very rare occasions will we get around 50000 hits/day - most of the time
> we're looking at under 10000 and that is with all the domains combined.
If space efficiency is a consideration then smaller blocksizes might
be useful. Not so much for hits per day, but for how many files you expect
to store at any one time; you'll waste ((blocksize / 2) * nr files) on average.