On Sun, Mar 27, 2011 at 01:59:49PM CDT, George N. White III <[email protected]> 
wrote:
> 
> Server vs a workstation can require very different
> configuration/tuning.  I encountered (reproducible) file system
> corruption doing large parallel compiles using regular Mac OS X
> Leopard and was told by Apple Support that such usage was not
> supported in regular Mac OS X, and that Mac OS X Server must be used
> for such workloads.   I assume filesystems use different tuning on
> regular and server configurations.   Some of my benchmarks show better
> performance for I/O intensive workloads on a MacBook Pro SL than on a
> Mac Pro Server (Leopard).  Maybe there are improvements for Lion
> and/or the disk hardware that negate the need for different tuning.
> Certainly with linux one can get large differences in performance on
> certain workloads by adjusting the filesystem tuning or using a
> different filesystem entirely.

This would not surprise me with OS X.  Years ago, I read that
the kernel itself is different between client and server.  IIRC,
the main difference is that server is designed for more equal
preemptive multitasking between daemons and such, while client
may prioritize users' main apps over other less-used processes.
Can't find the source, but I wouldn't mind the reading material
if someone has a link.


-- 
Eugene
http://www.coxar.pwp.blueyonder.co.uk/
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