How do I use NCQ of Intel X25-E(SSD) on ahci(4)?
Norikatsu Shigemura
nork at FreeBSD.org
Wed Nov 18 15:46:53 UTC 2009
Hi Alexander!
I have a Intel 64GB SSD(X25-E) and a Western Digital Caviar Green
1TB HDD (WD10EADS), and use them on ahci(4). ahci(4) can use NCQ
of WD10EADS, but doesn't use NCQ of X25-E.
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FreeBSD 9.0-CURRENT #107: Thu Nov 19 00:13:30 JST 2009
nork at nadesico.ninth-nine.com:/usr/obj/usr/src/sys/NADESICO amd64
:
ahci0: <ATI IXP700 AHCI SATA controller> port 0xa000-0xa007,0x9000-0x9003,0x8000-0x8007,0x7000-0x7003,0x6000-0x600f mem 0xfb8fe400-0xfb8fe7ff irq 22 at device 17.0 on pci0
ahci0: [ITHREAD]
ahci0: AHCI v1.10 with 6 3Gbps ports, Port Multiplier supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich0: [ITHREAD]
ahcich1: <AHCI channel> at channel 1 on ahci0
ahcich1: [ITHREAD]
ahcich2: <AHCI channel> at channel 2 on ahci0
ahcich2: [ITHREAD]
ahcich3: <AHCI channel> at channel 3 on ahci0
ahcich3: [ITHREAD]
ahcich4: <AHCI channel> at channel 4 on ahci0
ahcich4: [ITHREAD]
ahcich5: <AHCI channel> at channel 5 on ahci0
ahcich5: [ITHREAD]
:
(aprobe0:ahcich0:0:0:0): SIGNATURE: 0000
(aprobe0:ahcich1:0:0:0): SIGNATURE: 0000
(aprobe0:ahcich2:0:0:0): SIGNATURE: 0000
(aprobe0:ahcich3:0:0:0): SIGNATURE: 0000
:
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <SSDSA2SH064G1GC INTEL 045C8790> ATA/ATAPI-7 SATA 2.x device
ada0: 300.000MB/s transfers
ada0: 61057MB (125045424 512 byte sectors: 16H 63S/T 16383C)
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <WDC WD10EADS-00L5B1 01.01A01> ATA/ATAPI-8 SATA 2.x device
ada1: 300.000MB/s transfers
ada1: Command Queueing enabled
ada1: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
;
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I confirmed X25-E disabled NCQ.
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# camcontrol tags ada0
(pass0:ahcich0:0:0:0): device openings: 2
# camcontrol tags ada1
(pass1:ahcich1:0:0:0): device openings: 32
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According to 'camcontrol identify ada0' and Intel's documentation[*],
X25-E supports NCQ.
[*] http://www.intel.com/design/flash/nand/extreme/index.htm
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# camcontrol identify ada0
pass0: <SSDSA2SH064G1GC INTEL 045C8790> ATA/ATAPI-7 SATA 2.x device
pass0: 300.000MB/s transfers
protocol ATA/ATAPI-7 SATA 2.x
device model SSDSA2SH064G1GC INTEL
firmware revision 045C8790
serial number CVEM9024016B064KGN
WWN 500151795879a64e
cylinders 16383
heads 16
sectors/track 63
sector size logical 512, physical 512, offset 0
LBA supported 125045424 sectors
LBA48 supported 125045424 sectors
PIO supported PIO4
DMA supported WDMA2 UDMA6
overlap not supported
media RPM non-rotating
Feature Support Enable Value Vendor
read ahead yes yes
write cache yes yes
flush cache yes yes
Native Command Queuing (NCQ) yes 30/0x1E
Tagged Command Queuing (TCQ) no no 30/0x1E
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management no no 0/0x00
automatic acoustic management no no 0/0x00 0/0x00
media status notification no no
power-up in Standby no no
write-read-verify no no 0/0x0
unload yes yes
free-fall no no
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# camcontrol identify ada1
pass1: <WDC WD10EADS-00L5B1 01.01A01> ATA/ATAPI-8 SATA 2.x device
pass1: 300.000MB/s transfers
protocol ATA/ATAPI-8 SATA 2.x
device model WDC WD10EADS-00L5B1
firmware revision 01.01A01
serial number WD-WCAU45664302
WWN 50014ee257aa350
cylinders 16383
heads 16
sectors/track 63
sector size logical 512, physical 512, offset 0
LBA supported 268435455 sectors
LBA48 supported 1953525168 sectors
PIO supported PIO4
DMA supported WDMA2 UDMA6
overlap not supported
Feature Support Enable Value Vendor
read ahead yes yes
write cache yes yes
flush cache yes yes
Native Command Queuing (NCQ) yes 31/0x1F
Tagged Command Queuing (TCQ) no no 31/0x1F
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management no no 0/0x00
automatic acoustic management yes yes 254/0xFE 128/0x80
media status notification no no
power-up in Standby yes no
write-read-verify no no 0/0x0
unload no no
free-fall no no
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To use NCQ of X25-E, what should I report to you?
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