Re: sata_sil24 stability and performance

[Denys Dmytriyenko <denis@denix.org>]

Tejun et al,

I wanted to thank you all for the support you provided. I ended up replacing 
MoBo+CPU to Intel based ones (and previously mentioned single-rail PSU) and 
now everything works rock solid for over a week now! Thanks again.

> > BTW, issuing "smartctl -a" on a drive in standby, throws this exception:
> > 
> > Mar 20 18:16:53 [kernel] ata10.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
> > Mar 20 18:16:53 [kernel] ata10.00: cmd b0/da:00:00:4f:c2/00:00:00:00:00/00 tag 0 cdb 0x0 data 0 
> > Mar 20 18:16:53 [kernel]          res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
> > Mar 20 18:16:53 [kernel] ata10: soft resetting port
> > Mar 20 18:16:54 [kernel] ata10: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> > Mar 20 18:16:54 [kernel] ata10.00: configured for UDMA/100
> > Mar 20 18:16:54 [kernel] ata10: EH complete
> > Mar 20 18:16:54 [kernel] sd 9:0:0:0: [sdj] 976773168 512-byte hardware sectors (500108 MB)
> > Mar 20 18:16:54 [kernel] sd 9:0:0:0: [sdj] Write Protect is off
> > Mar 20 18:16:54 [kernel] sd 9:0:0:0: [sdj] Mode Sense: 00 3a 00 00
> > Mar 20 18:16:54 [kernel] sd 9:0:0:0: [sdj] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> 
> Which kernel version and how did you put the drive into sleep?

This timeout exception is still there - 2.6.24.4, drive goes to sleep on 
timeout of 30 minutes (hdpram -S 241)

-- 
Denys