Hi,I'm running F11. My box has 2 identical IDE disks (123 GB ATA Maxtor 6Y120L0), /dev/sda and /dev/sdb. F11 is installed on /dev/sdb7.
----------------------------------------------------------------------- hdparm -i /dev/sda /dev/sdb /dev/sda:Model=Maxtor 6Y120L0 , FwRev=YAR41BW0, SerialNo=Y3M40RDE
Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=?16? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=240121728 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 AdvancedPM=yes: disabled (255) WriteCache=enabledDrive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1,2,3,4,5,6,7
* signifies the current active mode /dev/sdb:Model=Maxtor 6Y120L0 , FwRev=YAR41BW0, SerialNo=Y3M40RLE
Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=?16? CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=240121728 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 AdvancedPM=yes: disabled (255) WriteCache=enabledDrive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1,2,3,4,5,6,7
* signifies the current active mode -------------------------------------------------------------------------Testing the speed of /dev/sdb with "hdparm -t /dev/sdb" shows constantly 56 MB/s:
/dev/sdb: Timing buffered disk reads: 170 MB in 3.01 seconds = 56.56 MB/sec /dev/sdb: Timing buffered disk reads: 170 MB in 3.01 seconds = 56.43 MB/sec /dev/sdb: Timing buffered disk reads: 168 MB in 3.00 seconds = 55.97 MB/sec /dev/sdb: Timing buffered disk reads: 170 MB in 3.01 seconds = 56.42 MB/sec /dev/sdb: Timing buffered disk reads: 168 MB in 3.03 seconds = 55.49 MB/sec ------------------------------------------------------------------------But testing /dev/sda with "hdparm -t /dev/sda" shows extremly variable values:
/dev/sda: Timing buffered disk reads: 32 MB in 3.02 seconds = 10.60 MB/sec /dev/sda: Timing buffered disk reads: 24 MB in 3.01 seconds = 7.97 MB/sec /dev/sda: Timing buffered disk reads: 36 MB in 4.01 seconds = 8.97 MB/sec /dev/sda: Timing buffered disk reads: 76 MB in 3.05 seconds = 24.91 MB/sec /dev/sda: Timing buffered disk reads: 46 MB in 3.06 seconds = 15.03 MB/sec ---------------------------------------------------------------------- Board: MSI K7N2 Delta lspci 00:00.0 Host bridge: nVidia Corporation nForce2 IGP2 (rev c1) 00:00.1 RAM memory: nVidia Corporation nForce2 Memory Controller 1 (rev c1) 00:00.2 RAM memory: nVidia Corporation nForce2 Memory Controller 4 (rev c1) 00:00.3 RAM memory: nVidia Corporation nForce2 Memory Controller 3 (rev c1) 00:00.4 RAM memory: nVidia Corporation nForce2 Memory Controller 2 (rev c1) 00:00.5 RAM memory: nVidia Corporation nForce2 Memory Controller 5 (rev c1) 00:01.0 ISA bridge: nVidia Corporation nForce2 ISA Bridge (rev a4) 00:01.1 SMBus: nVidia Corporation nForce2 SMBus (MCP) (rev a2) 00:02.0 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4) 00:02.1 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4) 00:02.2 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4)00:04.0 Ethernet controller: nVidia Corporation nForce2 Ethernet Controller (rev a1) 00:06.0 Multimedia audio controller: nVidia Corporation nForce2 AC97 Audio Controler (MCP) (rev a1)
00:08.0 PCI bridge: nVidia Corporation nForce2 External PCI Bridge (rev a3) 00:09.0 IDE interface: nVidia Corporation nForce2 IDE (rev a2) 00:1e.0 PCI bridge: nVidia Corporation nForce2 AGP (rev c1)02:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)
----------------------------------------------------------------------- Does somebody have an explanation for this? Any help is welcome. Regards Joachim Backes <joachim.backes@xxxxxxxxxxxxxx> http://www.rhrk.uni-kl.de/~backes
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