Troubleshooting a 3Ware 9550SX under 6.3
adam at baylessfamily.org
Mon Jun 9 22:09:27 UTC 2008
> Caching is off; that will kill performance especially for small
> transactions. If you've got battery backup for this system, consider
> enabling the onboard cache...?
Chuck, that made an immediate and huge difference:
# tw_cli set cache c0 u0 on
# dd if=/dev/zero of=testfile
5649235+0 records in
5649234+0 records out
2892407808 bytes transferred in 40.800142 secs (70892102 bytes/sec)
I had no idea having the cache on would be such a night and day difference.
I'm off to order the battery backup card.
More information about the freebsd-questions