Troubleshooting a 3Ware 9550SX under 6.3

[Chuck Swiger]

On Jun 9, 2008, at 3:09 PM, Adam Bayless wrote:
>> 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.
>
> Thanks!!!

Excellent!  I'm glad that resolved your performance issue, and you're  
most welcome....

-- 
-Chuck