SUMMARY: swap location for better performance

Date: Fri Sep 11 1998 - 11:17:58 CDT

Thanks a lot to all those who responded!

Here is the extract:

Main concern of saturating the fiber channel was unnecessary. Swap activity
will claim fraction of available fiber bandwidth. Putting
swap on lower utilized disks in the array will be better.

Many people recommended spreading the swap across multiple disk in
whatever way possible is a good idea though mirroring is not really

Of course most importantly maximum possible RAM to avoid paging daemon
to turn to disk for swapping.

Have a nice day!


The question:
> Hello Sun Managers,
> For a large database server on E6500 with Solaris 2.6 which of the
> following swap configuration will give better performance,
> 1) Entire swap on the root disk (which is mirrored).
> 2) Configuring small amount of swap on root disk and remaining
> large portion on A5000 with Veritas RAID 0+1. But same A5000
> has database also. (It's a pair of A5000 configured as RAID 0+1).
> 3) Any other suggestion ??
> Lot of swap activities are expected.
> Thanks in advance,
> -Nilesh Wagle.

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