Messages in this thread | | | Subject | Re: IDE/ATAPI in 2.5 | From | Mathieu Chouquet-Stringer <> | Date | 14 Jul 2002 16:45:55 -0400 |
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Forgot to copy lkml... :-(
alan@lxorguk.ukuu.org.uk (Alan Cox) writes: > On Sun, 2002-07-14 at 21:21, Mathieu Chouquet-Stringer wrote: > > I'm running tar (the regular version not star) right now on an Athlon @ > > 850. The fs is ext3 and the disk is a scsi drive. > > So far, tar has been running for 17 min 25 sec, and that's what top says: > > CPU states: 1.7% user, 98.2% system, 0.0% nice, 0.0% idle > ^^^^^^^^^^^^^^^^^^^^^^^^ > > Why are using PIO mode devices ?
That's a scsi drive so I would guess it uses dma. The interface: Jul 13 16:35:50 mcs kernel: sym.0.11.0: setting PCI_COMMAND_PARITY... Jul 13 16:35:50 mcs kernel: sym0: <895> rev 0x1 on pci bus 0 device 11 function 0 irq 10 Jul 13 16:35:50 mcs kernel: sym0: Tekram NVRAM, ID 7, Fast-40, LVD, parity checking Jul 13 16:35:50 mcs kernel: sym0: SCSI BUS has been reset. Jul 13 16:35:50 mcs kernel: spurious 8259A interrupt: IRQ7. Jul 13 16:35:50 mcs kernel: scsi0 : sym-2.1.17a
And the drive: Jul 13 16:35:50 mcs kernel: Vendor: IBM Model: DDYS-T18350N Rev: S96H Jul 13 16:35:50 mcs kernel: Type: Direct-Access ANSI SCSI revision: 03 [...] Jul 13 16:35:51 mcs kernel: sym0:0:0: tagged command queuing enabled, command queue depth 32. [...] Jul 13 16:35:51 mcs kernel: Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 [...] Jul 13 16:35:51 mcs kernel: sym0:0: FAST-40 WIDE SCSI 80.0 MB/s ST (25.0 ns, offset 31) -- Mathieu Chouquet-Stringer E-Mail : mathieu@newview.com It is exactly because a man cannot do a thing that he is a proper judge of it. -- Oscar Wilde - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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