On Tue, Jun 01, 2010 at 04:26:55AM -0500, Dale wrote: > Paul Hartman wrote: >> On Tue, Jun 1, 2010 at 12:26 AM, Dale<rdalek1...@gmail.com> wrote: >> >>> I am in the process of moving my OS from drive to drive and thought I would >>> test to see which drive is the fastest. I got some strange results when I >>> tested them One drive is MUCH slower than the others on the buffered disk >>> reads but I can't see any reason why that would be so. >>> >> Check dmesg to see if the drives show any differences... >> >> If they are SATA drives check to see if there is a jumper which forces >> it into "compatibility" mode, slow mode, something like that... >> >> If they are SATA and you use an intel chipset motherboard check to be >> sure that the SATA header of that drive is set to AHCI and not IDE >> mode... >> >> Those are just ideas, things I have encountered. :) >> >> > > This is from dmesg: > > smoker-new ~ # dmesg | grep hda > hda: Maxtor 6E040L0, ATA DISK drive > hda: host max PIO5 wanted PIO255(auto-tune) selected PIO4 > hda: UDMA/133 mode selected > hda: max request size: 128KiB > hda: 78156288 sectors (40016 MB) w/2048KiB Cache, CHS=65535/16/63 > hda: cache flushes supported > hda: hda1 hda2 < hda5 hda6 hda7 hda8 hda9 hda10 > > smoker-new ~ # dmesg | grep hdb > hdb: WDC WD800BB-00DKA0, ATA DISK drive > hdb: host max PIO5 wanted PIO255(auto-tune) selected PIO4 > hdb: UDMA/100 mode selected > hdb: max request size: 512KiB > hdb: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=16383/255/63 > hdb: cache flushes supported > hdb: hdb1 hdb2 < hdb5 > > smoker-new ~ # dmesg | grep hdc > hdc: Maxtor 6Y080P0, ATA DISK drive > hdc: host max PIO5 wanted PIO255(auto-tune) selected PIO4 > hdc: UDMA/133 mode selected > hdc: max request size: 128KiB > hdc: 160086528 sectors (81964 MB) w/7936KiB Cache, CHS=65535/16/63 > hdc: cache flushes supported > hdc: hdc1 hdc2 < hdc5 hdc6 hdc7 > > REISERFS (device hdc6): found reiserfs format "3.6" with standard journal > REISERFS (device hdc6): using ordered data mode > REISERFS (device hdc6): journal params: device hdc6, size 8192, journal > first block 18, max trans len 1024, max batch 900, max commit age 30, > max trans age 30 > REISERFS (device hdc6): checking transaction log (hdc6) > REISERFS (device hdc6): Using r5 hash to sort names > REISERFS (device hdc7): found reiserfs format "3.6" with standard journal > REISERFS (device hdc7): using ordered data mode > REISERFS (device hdc7): journal params: device hdc7, size 8192, journal > first block 18, max trans len 1024, max batch 900, max commit age 30, > max trans age 30 > REISERFS (device hdc7): checking transaction log (hdc7) > REISERFS (device hdc7): Using r5 hash to sort names > Adding 976712k swap on /dev/hdc5. Priority:-1 extents:1 across:976712k > Adding 976712k swap on /dev/hdc5. Priority:-1 extents:1 across:976712k > Adding 976712k swap on /dev/hdc5. Priority:-1 extents:1 across:976712k > Adding 976712k swap on /dev/hdc5. Priority:-1 extents:1 across:976712k > smoker-new ~ # > > It appears that hdb is using UDMA/100 but it has always done that. It's > a older drive. This drive used to get somewhere in the 40Mb/sec range > tho. I want to say it used to be about 47Mb/sec or so. > > All three of those drives are ATA. I have a SATA drive but I didn't > list it since it is working good and fast all things considered. It's > hooked to a PCI card. > > Thoughts? >
just a quess, did you use 80 or 40 wire ata cable for that disk? yoyo
