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Old 09-21-2004, 12:19 PM   #1
nirvanix
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Nforce2 chipset and an ATA133/7200rpm hard drive


Hi there,

I've got a motherboard with the Nforce2 chipset and an ATA133/7200rpm hard drive. I seems to begetting very poor throughput: hdparm -t /dev/hda gives about 10 Mb/s on average. I think it should be 3 or 4 times that amount. I had this same hard drive installed on a motherboard with a VIA chipset and I was getting 35-40 Mb/s so I'm wondering if the problem is with the linux Nforce IDE drivers. If you have the same motherboard chipset, could you please run the
hdparm -t /dev/hd? program amd report your numbers here. thanks!
 
Old 09-21-2004, 12:30 PM   #2
leonscape
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Code:
/dev/hda:
 Timing buffered disk reads:  136 MB in  3.02 seconds =  44.98 MB/sec
/dev/hdb:
 Timing buffered disk reads:   74 MB in  3.01 seconds =  24.60 MB/sec
This depends on your disks as well as the motherboard, make sure the DMA is on, as well as other settings match your drive...

dmesg | grep DMA
Code:
NFORCE2: 0000:00:09.0 (rev a2) UDMA133 controller
    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
hda: 80418240 sectors (41174 MB) w/1863KiB Cache, CHS=65535/16/63, UDMA(100)
hdb: 40020624 sectors (20490 MB) w/512KiB Cache, CHS=39703/16/63, UDMA(66)
hdc: ATAPI 48X DVD-ROM drive, 128kB Cache, UDMA(33)
hdd: ATAPI 32X CD-ROM CD-R/RW drive, 1280kB Cache, DMA
 
Old 09-21-2004, 01:01 PM   #3
nirvanix
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thanks for the reply. yes my DMA settings are on:

NFORCE2: 00:09.0 (rev a2) UDMA133 controller
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hdaMA, hdbMA
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdcMA, hddMA
hda: 60058656 sectors (30750 MB) w/2048KiB Cache, CHS=3738/255/63, UDMA(133)

but I still get the same crappy results. What's funny is that I can change any setting using hdparm (-d -c -X -u) etc but it doesn't change the performance at all! Maybe my hard drive is borked!
 
  


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