[oi-dev] Some numbers for NFS builds

Garrett D'Amore garrett at nexenta.com
Sun Jun 5 16:58:01 UTC 2011


These numbers are consistent with my experience using spinning disks and comparing to SSDs.   Basically, the build is mostly CPU bound.

You could probably close most ofthe difference by using a ZFS filesystem for the build that had the ZIL synchronicity turned off.  (Its latency sensitive operations that are doing the most to add to compilation time, I expect.)

  -- Garrett D'Amore

On Jun 5, 2011, at 5:55 PM, "Bayard Bell" <buffer.g.overflow at googlemail.com> wrote:

> Long and short seems to be that the difference isn't so bad, it's just proportionately more when doing an incremental build in the case where there aren't any changes.
> 
> full build (-FnCDlmprt):
> 
> ZFS
> 
> real       56:48.91
> user     6:00:35.76
> sys        58:53.77
> 
> real       56:44.43
> user     5:58:27.00
> sys      1:36:39.84
> 
> NFS
> 
> real     1:07:19.96
> user     6:04:27.15
> sys      1:19:09.63
> 
> real     1:11:43.07
> user     6:11:43.47
> sys      1:21:22.65
> 
> incremental (-iFnCDlmprt):
> 
> ZFS
> 
> real       28:45.12
> user     1:38:04.47
> sys        17:05.66
> 
> real       29:09.10
> user     1:32:59.43
> sys        59:13.10
> 
> NFS
> 
> real       39:33.68
> user     1:37:55.99
> sys        23:06.83
> 
> real       39:57.23
> user     1:33:09.83
> sys        22:46.34
> 
> 
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