[zfs-discuss] Re: Re[2]: Re: Re: Re: Snapshots impact on performance

2007-06-27 Thread Gino
Same problem here (snv_60).
Robert, did you find any solutions?

gino
 
 
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Re: [zfs-discuss] Re: Re[2]: Re: Re: Re: Snapshots impact on performance

2007-06-27 Thread Victor Latushkin

Gino wrote:

Same problem here (snv_60).
Robert, did you find any solutions?


Couple of week ago I put together an implementation of space maps which 
completely eliminates loops and recursion from space map alloc 
operation, and allows to implement different allocation strategies quite 
easily (of which I put together 3 more). It looks like it works for me 
on thumper and my notebook with ZFS Root though I have almost no time to 
test it more these days due to year end. I haven't done SPARC build yet 
and I do not have test case to test against.


Also, it comes at a price - I have to spend some more time (logarithmic, 
though) during all other operations on space maps and is not optimized now.


victor
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