On Wed, Mar 05, 2008 at 05:11:31PM +0900, Tejun Heo wrote:
> That's the drive rejecting acoustic setting command probably because the
> drive doesn't support it. Nothing to worry about. More recent kernels
> won't whine about those anymore.
Oh, thanks. I forgot that I tried to change acoustic setting.
> > # dd if=/dev/zero of=file bs=100M count=20
> > 20+0 records in
> > 20+0 records out
> > 2097152000 bytes (2.1 GB) copied, 117.053 s, 17.9 MB/s
> >
> > # dd if=file of=file1 bs=100M count=20
> > 20+0 records in
> > 20+0 records out
> > 2097152000 bytes (2.1 GB) copied, 161.721 s, 13.0 MB/s
>
> Write seems awfully sluggish. Does turning off NCQ help? You can turn
> off NCQ by echoing 1 to /sys/block/sdX/device/queue_depth. Also, which
> kernel is this test result from?
Turning off NCQ does not help. I am currently on 2.6.23.9, but I just tried
2.6.25-rc4 and it is the same.
> > A similar drive in an ICH7 box shows more consistent results:
> >
> > # hdparm -t /dev/sda
> >
> > /dev/sda:
> > Timing buffered disk reads: 182 MB in 3.01 seconds = 60.48 MB/sec
> >
> > # dd if=/dev/zero of=file bs=100M count=100
> > 100+0 records in
> > 100+0 records out
> > 10485760000 bytes (10 GB) copied, 242.908 s, 43.2 MB/s
> >
> > # dd if=file of=/dev/null bs=100M count=100
> > 100+0 records in
> > 100+0 records out
> > 10485760000 bytes (10 GB) copied, 211.132 s, 49.7 MB/s
>
> Hmmm... indeed. Same kernel version? Can you post "hdparm -I" results
> of both drives?
The kernel on the second box is also 2.6.23.9. Here are hdparm results for
identical drives:
1. Connected to SiI 3124/sata_sil24 w/ slow write:
# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD1600JS-75NCB1
Serial Number: WD-WCANM1344866
Firmware Revision: 10.02E01
Standards:
Supported: 7 6 5 4
Likely used: 7
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 312500000
device size with M = 1024*1024: 152587 MBytes
device size with M = 1000*1000: 160000 MBytes (160 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 128
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
SET_MAX security extension
* Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* SATA-I signaling speed (1.5Gb/s)
* SATA-II signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12]
Security:
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
Checksum: correct
2. Connected to ICH7/ata_piix w/ normal write:
# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD1600JS-75NCB1
Serial Number: WD-WCANM1356774
Firmware Revision: 10.02E01
Standards:
Supported: 7 6 5 4
Likely used: 7
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 312500000
device size with M = 1024*1024: 152587 MBytes
device size with M = 1000*1000: 160000 MBytes (160 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
SET_MAX security extension
* Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* SATA-I signaling speed (1.5Gb/s)
* SATA-II signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12]
Security:
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
Checksum: correct
Also, few months ago instead of sata_sil24 I had my drives connected to
sata_mv (Supermicro 8-port) and performance was normal...
Thank you for your time. Please let me know what else to try.
Regards,
Denys
--
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
