<br><div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>Your buffered reads look more or less normal, but your cached reads<br>are less than half of what they should be. I get over 1900 MB/sec.
<br>for cached reads.<br><br>Are you sure DMA is enabled for your drives ?? Was the system doing<br>anything else when you ran the tests?<br><br>You never want to put a hard drive on the same IDE bus as an optical<br>drive, it will slow the HDD down to the (probably 33) speed of the
<br>latter. You should put both of your hard drives on the primary IDE<br>channel. This, however, does not explain the slow speed of your /dev/<br>hda drive, but it would explain problems with /dev/hdc.<br><br>Make sure you are using a proper 80-conductor cable for your hard
<br>drives as well, you need to be running in UDMA mode to get top<br>performance (assuming your Motherboard has a modern IDE interface,<br>without that you're pretty much dead in the water).<br><br></blockquote></div><br>
The system was recording during that test, I can shut myth down later to get "clean" numbers if it would help. DMA is on for both drives.<br><br>/dev/hda:<br><br> Model=ST3200822A, FwRev=3.01, SerialNo=3LJ1APBB
<br> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }<br> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4<br> BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16<br> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
<br> IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}<br> PIO modes: pio0 pio1 pio2 pio3 pio4<br> DMA modes: mdma0 mdma1 mdma2<br> UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5<br> AdvancedPM=no WriteCache=enabled
<br> Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2:<br><br>/dev/hdc:<br><br> Model=ST3250823A, FwRev=3.02, SerialNo=5ND064BR<br> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }<br> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
<br> BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16<br> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455<br> IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}<br> PIO modes: pio0 pio1 pio2 pio3 pio4
<br> DMA modes: mdma0 mdma1 mdma2<br> UDMA modes: udma0 udma1 udma2<br> AdvancedPM=no WriteCache=enabled<br> Drive conforms to: device does not report version:<br><br><br>So perhaps the CD is blocking the UDMA5 mode and that's what's borking me?
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