Messages in this thread | | | Date | Wed, 21 Mar 2001 11:14:53 -0800 | From | Tim Moore <> | Subject | Re: UDMA 100 / PIIX4 question |
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> > Device Boot Start End Blocks Id System > > /dev/hda1 * 1 932 7486258+ b Win95 FAT32 > > ... > > I also ran hdparm -tT /dev/hda1: > > > > Timing buffer-cache reads: 128 MB in 1.28 seconds =100.00 MB/sec > > Timing buffered disk reads: 64 MB in 4.35 seconds = 14.71 MB/sec > > > > I then tried hdparm -tT /dev/hda7: > > > > Timing buffer-cache reads: 128 MB in 1.28 seconds =100.00 MB/sec > > Timing buffered disk reads: 64 MB in 2.12 seconds = 30.19 MB/sec
Change partition type to 'c' (fat32+LBA); check that BIOS is set for (AUTO or USER) and LBA.
Regarding the PIIX4, I reran basic throughput read tests on a more recent UDMA5, 5400RPM Maxtor on the PIIX4 and HPT366 (Abit BP6 + 2.2.19p17 + ide.2.2.18.1221.patch) chipsets.
Since pin 30 is plugged on my ATA66 cable, I used an Asus P3B-F as a ATA66+PIIX4 sanity check. Neither the Abit or Asus PIIX4 controller would go higher than UDMA2. Although hdparm -i reported UDMA4, neither the -tT or dd tests demonstrated faster results. The kernel logged 'ide0: Speed warnings UDMA 3/4/5 is not functional' when attempting a setting higher than UDMA2 on the PIIX4.
Apparently IDE drive technology has improved over the last year, however real world PIIX4 speeds are still in the 14-19MB/s range.
UDMA2/PIIX4 16-21MB/s UDMA4/HPT366 19-28MB/s
rgds, tim.
[tim@asus tim]# lspci 00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 03) 00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03) 00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02) 00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) 00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) 00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02) 00:0d.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev20) 00:0f.0 VGA compatible unclassified device: 3DLabs Permedia II 2D+3D (rev 01) 00:13.0 Unknown mass storage controller: Triones Technologies, Inc. HPT366 (rev 01) 00:13.1 Unknown mass storage controller: Triones Technologies, Inc. HPT366 (rev 01)
PIIX4 ----------------------------- [tim@asus tim]# hdparm -iv /dev/hdb
/dev/hdb: multcount = 0 (off) I/O support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 2491/255/63, sectors = 40021632, start = 0
Model=Maxtor 32049H2, FwRev=YAH814Y0, SerialNo=L21R7EKC Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=40021632 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 udma0 udma1 *udma2 udma3 udma4 udma5
[tim@asus tim]# hdparm -tT /dev/hdb
/dev/hdb: Timing buffer-cache reads: 128 MB in 1.47 seconds = 87.07 MB/sec Timing buffered disk reads: 64 MB in 3.02 seconds = 21.19 MB/sec
[tim@asus tim]# time dd if=/dev/hdb of=/dev/null bs=1k count=512k 524288+0 records in 524288+0 records out 0.540u 10.520s 0:32.85 33.6% 0+0k 0+0io 115pf+0w [tim@asus tim]# echo "514288/32.85" | bc -q 15655
HPT366 ---------------------------- [tim@asus tim]# hdparm -iv /dev/hdf
/dev/hdf: multcount = 0 (off) I/O support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) nowerr = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 2491/255/63, sectors = 40021632, start = 0
Model=Maxtor 32049H2, FwRev=YAH814Y0, SerialNo=L21R7EKC Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=40021632 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 udma0 udma1 udma2 udma3 *udma4 udma5
[tim@asus tim]# hdparm -tT /dev/hdf
/dev/hdf: Timing buffer-cache reads: 128 MB in 1.50 seconds = 85.33 MB/sec Timing buffered disk reads: 64 MB in 2.28 seconds = 28.07 MB/sec
[tim@asus tim]# time dd if=/dev/hdf of=/dev/null bs=1k count=512k 524288+0 records in 524288+0 records out 0.530u 11.140s 0:27.45 42.5% 0+0k 0+0io 115pf+0w [tim@asus tim]# echo "524288/27.45" | bc -q 19099
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