ahci hangs on Supermicro MicroCloud second channel

[Dmitry Morozovsky]

Steven,

On Sun, 18 Mar 2012, Steven Hartland wrote:

[snip]

> We have quite a few of these running 8.2-RELEASE-p6 on AHCI with no
> problems (kernel compiled with:- device ahci)
> 
> ahci0: <Intel Cougar Point AHCI SATA controller> port
> 0xf050-0xf057,0xf040-0xf043,0xf030-0xf037,0xf020-0xf023,0xf000-0xf01f mem
> 0xfbc01000-0xfbc017ff irq 19 at device 31.2 on pci0
> ahci0: [ITHREAD]
> ahci0: AHCI v1.30 with 6 6Gbps ports, Port Multiplier not supported
> ahcich0: <AHCI channel> at channel 0 on ahci0
> ahcich0: [ITHREAD]
> ahcich1: <AHCI channel> at channel 1 on ahci0
> ahcich1: [ITHREAD]
> 
> ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
> ada0: <WDC WD1003FBYX-01Y7B0 01.01V01> ATA-8 SATA 2.x device
> ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
> ada0: Command Queueing enabled
> ada0: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
> ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
> ada1: <Corsair Force 3 SSD 1.3> ATA-8 SATA 3.x device
> ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
> ada1: Command Queueing enabled
> ada1: 57241MB (117231408 512 byte sectors: 16H 63S/T 16383C)
> 
> Given this might be worth seeing if 8.2 on AHCI fixes the
> hangs and hence its a regression in 9. If your running
> generic you should be able to just add the following to
> /boot/loader.conf
> ahci_load="YES"

Yes, I did it, but all I have ... wait a bit... Yes, I missed ahci.ko module on 
my PXE server in amd64/8 tree :-/

[kernel reinstall]

Well, ahci problem solved, but I still have much worse performance (and 
different on ada0 and ada1!):
ada0, MC	50-60 MBps 
ada1, MC	13-25 MBps
ada*, 5017	130+ MBps

Could you please post SATA/AHCI BIOS settings from your machines? Thanks a lot!


-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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