Improving old-fashioned UFS2 performance with lots of inodes...

[krad]

On 6 July 2011 11:34, Ivan Voras <ivoras at freebsd.org> wrote:

> On 29/06/2011 01:47, Jeremy Chadwick wrote:
>
>  unfortunately, so for now we will use UFS2, and as I said ... it seems a
>>> shame
>>> that UFS2 cannot use system RAM for any good purpose...
>>>
>>> Or can it ?  Anyone ?
>>>
>>
>> Like I said: the only person (I know of) who could answer this would be
>> Kirk McKusick.  I'm not well-versed in the inner workings and design of
>> filesystems; Kirk would be.  I'm not sure who else "knows" UFS around
>> here.
>>
>
> UFS will use all your memory for caching, there's no known issues here. Of
> course, you still need to read all this data in to be cached.
>
> As Jeremy said, even ZFS will not help you with huge file systems without
> some work. You could read this: http://en.wikipedia.org/wiki/**Sharding<http://en.wikipedia.org/wiki/Sharding>and simply replace "databases" with "file systems" and "tables" with
> "directories" :)
>
>
>
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Sorry if i misread this but are you saying you are having memory issues with
rsync? If so what version are you using?