IBM x335 onboard LSI 1020 (mpt) poor performance

[Kenneth Vestergaard Schmidt]

On Thu, Apr 15, 2004 at 04:35:58PM -0400, Moore, Eric Dean wrote:
> Would you be able to take a scsi bus trace to 
> see what the negotiated speed over the bus?
> Also would you able to see when the driver
> loads if the PPR(Parallel Protocal Request) 
> and WDTR(Wide data tranfer request) were issued
> by the driver to both disk drives. If not, then
> its possible your running at asyn narrow speeds
> on one of the disk, which would be about 5-15 MB/sec.

I'm not quite sure how to do that - I've enabled CAMDEBUG and set
CAM_DEBUG_FLAGS=CAM_DEBUG_INFO|CAM_DEBUG_CDB - do I also need to set
CAM_DEBUG_(BUS|TARGET|LUN) to get debug from boot?

I tried a boot -v, and it shows the following:

(probe1:mpt0:0:1:0): MODE SENSE(06). CDB: 1a 0 a 0 14 0
(probe1:mpt0:0:1:0): ILLEGAL REQUEST asc:24,0
(probe1:mpt0:0:1:0): Invalid field in CDB
(probe1:mpt0:0:1:0): INQUIRY. CDB: 12 1 80 0 ff 0
(probe1:mpt0:0:1:0): ILLEGAL REQUEST asc:24,0
(probe1:mpt0:0:1:0): Invalid field in CDB

Not sure if that is relevant or not.

Also, there was an "mpt0: soft reset" - unfortunately, I haven't got
physical access right now so I can't do a full power cycle. Does that
make a difference?

-- 
Best Regards
Kenneth Schmidt