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Re: [Nmh-workers] some indexing results
From: |
Valdis . Kletnieks |
Subject: |
Re: [Nmh-workers] some indexing results |
Date: |
Tue, 15 Feb 2011 10:42:34 -0500 |
On Tue, 15 Feb 2011 14:53:42 GMT, Paul Vixie said:
> on the strength of observations made by somebody else here recently, i tried
> moving my mail store from ZFS to UFS.
>
> scan results for +inbox, ~4000 messages.
>
> UFS (3Ware mirror):
>
> 0.114u 0.076s 0:00.21 85.7% 138+1461k 1+0io 0pf+0w
> ZFS (raidz2):
>
> 0.440u 1.273s 0:33.47 5.1% 143+1507k 0+0io 0pf+0w
> my sleepycat version is no faster than the UFS numbers above. apparently i
> have been the victim of "zfs fragmentation".
00.21 versus 33.47? I'd really investigate hot/cold cache effects
there. If you "just" moved it to UFS, a copy is probably still in
cache. Any way to flush the in-memory file cache on your box and
try again?
pgpFIhFYfxweE.pgp
Description: PGP signature
- Re: [Nmh-workers] some indexing results, (continued)
- Re: [Nmh-workers] some indexing results, Matthew Hannigan, 2011/02/10
- Re: [Nmh-workers] some indexing results, Lyndon Nerenberg, 2011/02/08
- Re: [Nmh-workers] some indexing results, Paul Vixie, 2011/02/08
- Re: [Nmh-workers] some indexing results, Ken Hornstein, 2011/02/08
- Re: [Nmh-workers] some indexing results, Earl Hood, 2011/02/08
- Re: [Nmh-workers] some indexing results, Paul Vixie, 2011/02/08
- Re: [Nmh-workers] some indexing results, Paul Vixie, 2011/02/15
- Re: [Nmh-workers] some indexing results,
Valdis . Kletnieks <=
- Re: [Nmh-workers] some indexing results, Paul Vixie, 2011/02/15
- Re: [Nmh-workers] some indexing results, Valdis . Kletnieks, 2011/02/15
- Re: [Nmh-workers] some indexing results, Ken Hornstein, 2011/02/15
- Re: [Nmh-workers] some indexing results, Paul Vixie, 2011/02/15
- Re: [Nmh-workers] some indexing results, Ken Hornstein, 2011/02/15
- Re: [Nmh-workers] some indexing results, Paul Vixie, 2011/02/15
fun (was Re: [Nmh-workers] some indexing results), Paul Vixie, 2011/02/07