Re: PARTIAL TAKE 964999 - lazy superblock counters for XFS

[Andi Kleen <andi@xxxxxxxxxxxxxx>]

dgc@xxxxxxx (David Chinner) writes:
> 
> The key to removing the contention is to not require the superblock
> fields in question to be locked. We do that by not marking the
> superblock dirty in the transaction. IOWs, we modify the incore
> superblock but do not modify the cached superblock buffer. In short,
> we do not log superblock modifications to critical fields in the
> superblock on every transaction. In fact we only do it just before
> we write the superblock to disk every sync period or just before
> unmount.

Does this mean it will increases performance on small systems too
due to less super block writes or is it purely for large
system scalability?

-Andi