[CentOS] 3Ware 9550SX and latency/system responsiveness

[Ross S. W. Walker]

Simon Banton wrote:
> 
> At 08:18 +0800 15/9/07, Feizhou wrote:
> >>Is there any way to tell the card to forget about not having a BBU 
> >>and behave as if it did?
> >
> >Short of modifying the code...I do not know of any.
> 
> Well, I've now got BBUs on order for the three identical machines to 
> see if that does anything to improve matters - I'll report back when 
> I've fitted them. A glance through the 2.26.05.007 driver code shows 
> no references to the BBU, so the different code paths (with BBU and 
> without) must be in the firmware itself.

If your card is on a PCI riser try running it plugged directly in the
slot (if you can) and see if that helps.

-Ross

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