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Hi folks, |
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|
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I am in the process of moving my OS from drive to drive and thought I |
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would test to see which drive is the fastest. I got some strange |
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results when I tested them One drive is MUCH slower than the others on |
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the buffered disk reads but I can't see any reason why that would be |
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so. This is the test results: |
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|
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smoker-new ~ # hdparm -Tt /dev/hda |
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|
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/dev/hda: |
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Timing cached reads: 816 MB in 2.00 seconds = 407.41 MB/sec |
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Timing buffered disk reads: 172 MB in 3.03 seconds = 56.70 MB/sec |
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smoker-new ~ # hdparm -Tt /dev/hdb |
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|
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/dev/hdb: |
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Timing cached reads: 818 MB in 2.00 seconds = 408.77 MB/sec |
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Timing buffered disk reads: 38 MB in 3.03 seconds = 12.55 MB/sec |
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smoker-new ~ # hdparm -Tt /dev/hdc |
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|
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/dev/hdc: |
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Timing cached reads: 820 MB in 2.00 seconds = 409.93 MB/sec |
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Timing buffered disk reads: 170 MB in 3.03 seconds = 56.12 MB/sec |
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smoker-new ~ # |
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|
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As you may be able to tell, hdb is really really slow. Well, they are |
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all pretty slow but that one is a lot slower for some reason. This is |
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the info from hdparm on each drive: Sorry so long but it may help. |
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|
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smoker-new ~ # hdparm -I /dev/hda |
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|
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/dev/hda: |
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|
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ATA device, with non-removable media |
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Model Number: Maxtor 6E040L0 |
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Serial Number: E15KS65E |
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Firmware Revision: NAR61590 |
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Standards: |
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Used: ATA/ATAPI-7 T13 1532D revision 0 |
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Supported: 7 6 5 4 |
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Configuration: |
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Logical max current |
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cylinders 16383 16383 |
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heads 16 16 |
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sectors/track 63 63 |
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-- |
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CHS current addressable sectors: 16514064 |
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LBA user addressable sectors: 78156288 |
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Logical/Physical Sector size: 512 bytes |
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device size with M = 1024*1024: 38162 MBytes |
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device size with M = 1000*1000: 40016 MBytes (40 GB) |
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cache/buffer size = 2048 KBytes (type=DualPortCache) |
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Capabilities: |
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LBA, IORDY(can be disabled) |
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Standby timer values: spec'd by Standard, no device specific |
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minimum |
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R/W multiple sector transfer: Max = 16 Current = 16 |
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Advanced power management level: disabled |
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Recommended acoustic management value: 192, current value: 254 |
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DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 |
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Cycle time: min=120ns recommended=120ns |
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PIO: pio0 pio1 pio2 pio3 pio4 |
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Cycle time: no flow control=120ns IORDY flow control=120ns |
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Commands/features: |
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Enabled Supported: |
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* SMART feature set |
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Security Mode feature set |
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* Power Management feature set |
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* Write cache |
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* Look-ahead |
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* Host Protected Area feature set |
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* WRITE_VERIFY command |
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* WRITE_BUFFER command |
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* READ_BUFFER command |
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* NOP cmd |
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* DOWNLOAD_MICROCODE |
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Advanced Power Management feature set |
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SET_MAX security extension |
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* Automatic Acoustic Management feature set |
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* Device Configuration Overlay feature set |
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* Mandatory FLUSH_CACHE |
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* FLUSH_CACHE_EXT |
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* SMART error logging |
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* SMART self-test |
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Security: |
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Master password revision code = 65534 |
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supported |
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not enabled |
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not locked |
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not frozen |
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not expired: security count |
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not supported: enhanced erase |
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HW reset results: |
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CBLID- above Vih |
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Device num = 0 determined by the jumper |
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Checksum: correct |
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smoker-new ~ # hdparm -I /dev/hdb |
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|
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/dev/hdb: |
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|
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ATA device, with non-removable media |
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Model Number: WDC WD800BB-00DKA0 |
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Serial Number: WD-WCAHL2497094 |
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Firmware Revision: 77.07W77 |
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Standards: |
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Supported: 6 5 4 |
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Likely used: 6 |
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Configuration: |
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Logical max current |
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cylinders 16383 16383 |
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heads 16 16 |
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sectors/track 63 63 |
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-- |
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CHS current addressable sectors: 16514064 |
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LBA user addressable sectors: 156301488 |
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LBA48 user addressable sectors: 156301488 |
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Logical/Physical Sector size: 512 bytes |
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device size with M = 1024*1024: 76319 MBytes |
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device size with M = 1000*1000: 80026 MBytes (80 GB) |
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cache/buffer size = 2048 KBytes (type=DualPortCache) |
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Capabilities: |
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LBA, IORDY(can be disabled) |
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Standby timer values: spec'd by Standard, with device specific |
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minimum |
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R/W multiple sector transfer: Max = 16 Current = 16 |
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Recommended acoustic management value: 128, current value: 254 |
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DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 |
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Cycle time: min=120ns recommended=120ns |
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PIO: pio0 pio1 pio2 pio3 pio4 |
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Cycle time: no flow control=120ns IORDY flow control=120ns |
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Commands/features: |
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Enabled Supported: |
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* SMART feature set |
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Security Mode feature set |
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* Power Management feature set |
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* Write cache |
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* Look-ahead |
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* Host Protected Area feature set |
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* WRITE_BUFFER command |
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* READ_BUFFER command |
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* DOWNLOAD_MICROCODE |
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SET_MAX security extension |
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* Automatic Acoustic Management feature set |
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* 48-bit Address feature set |
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* Device Configuration Overlay feature set |
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* Mandatory FLUSH_CACHE |
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* FLUSH_CACHE_EXT |
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* SMART error logging |
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* SMART self-test |
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Security: |
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supported |
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not enabled |
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not locked |
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not frozen |
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not expired: security count |
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not supported: enhanced erase |
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HW reset results: |
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CBLID- above Vih |
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Device num = 1 determined by the jumper |
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Checksum: correct |
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smoker-new ~ # hdparm -I /dev/hdc |
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|
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/dev/hdc: |
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|
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ATA device, with non-removable media |
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Model Number: Maxtor 6Y080P0 |
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Serial Number: Y22J9KXE |
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Firmware Revision: YAR41BW0 |
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Standards: |
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Used: ATA/ATAPI-7 T13 1532D revision 0 |
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Supported: 7 6 5 4 |
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Configuration: |
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Logical max current |
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cylinders 16383 4047 |
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heads 16 16 |
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sectors/track 63 255 |
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-- |
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CHS current addressable sectors: 16511760 |
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LBA user addressable sectors: 160086528 |
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Logical/Physical Sector size: 512 bytes |
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device size with M = 1024*1024: 78167 MBytes |
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device size with M = 1000*1000: 81964 MBytes (81 GB) |
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cache/buffer size = 7936 KBytes (type=DualPortCache) |
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Capabilities: |
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LBA, IORDY(can be disabled) |
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Standby timer values: spec'd by Standard, no device specific |
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minimum |
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R/W multiple sector transfer: Max = 16 Current = 16 |
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Advanced power management level: disabled |
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Recommended acoustic management value: 192, current value: 254 |
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DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 |
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Cycle time: min=120ns recommended=120ns |
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PIO: pio0 pio1 pio2 pio3 pio4 |
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Cycle time: no flow control=120ns IORDY flow control=120ns |
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Commands/features: |
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Enabled Supported: |
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* SMART feature set |
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Security Mode feature set |
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* Power Management feature set |
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* Write cache |
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* Look-ahead |
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* Host Protected Area feature set |
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* WRITE_VERIFY command |
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* WRITE_BUFFER command |
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* READ_BUFFER command |
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* NOP cmd |
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* DOWNLOAD_MICROCODE |
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Advanced Power Management feature set |
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SET_MAX security extension |
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* Automatic Acoustic Management feature set |
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* Device Configuration Overlay feature set |
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* Mandatory FLUSH_CACHE |
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* FLUSH_CACHE_EXT |
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* SMART error logging |
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* SMART self-test |
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Security: |
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Master password revision code = 65534 |
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supported |
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not enabled |
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not locked |
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not frozen |
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not expired: security count |
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not supported: enhanced erase |
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HW reset results: |
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CBLID- above Vih |
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Device num = 0 determined by the jumper |
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Checksum: correct |
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smoker-new ~ # |
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|
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For the record, hda and hdb are not even mounted. I am currently using |
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hdc for the OS. The drive used to be a lot faster than this. I used it |
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for my OS a good while back and recently used it for /var/portage and |
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/usr/portage. I'm not sure what has changed so I can't figure out why |
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it is so slow. Anyone see something I am missing? All I see is the |
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others are udma6 while it is udma5. It has always been that way tho. |
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|
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Thoughts? |
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|
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Dale |
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|
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:-) :-) |
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