Re: [RFC] Make the SCSI mempool allocations variable

[Jeremy Higdon <jeremy@sgi.com>]

On Wed, Mar 10, 2004 at 10:29:36AM -0500, James Bottomley wrote:
> 
> The best course of action is probably to put the patch in (since it has
> its current default at 128, it will change nothing) so that people who
> wish to play with increasing the allocation can.
> 
> To address the question of how you set this, I'd like more information
> about which filesystems and workloads find this useful, perhaps with a
> view to tying it to an indirect config option (CONFIG_ENTERPRISE or
> something).
> 
> James

Most of our users that would benefit from this would fall into the
"HPC" segment.  HPC meaning High Performance Computing.  That's
probably not very descriptive.  There is typically a lot of floating
point and large data sets.

There may be a database involved, but it's not traditional commercial
transaction processing, which typically has very small I/O requests.

Other users would be Broadcast, where they stream A/V streams to/from
a RAID device.

There are also sites that store large amounts of data keeping track
of things (people/places/etc.), looking for things, etc.

Maybe CONFIG_HPC or CONFIG_HIGH_BANDWIDTH_IO.  The longer and
clumsier the name, the more descriptive.  :-)

Filesystems?  Is there anything other than XFS?  :-)  :-)

jeremy