On Thursday 12 Nov 2009 17:45:05 Junichi Uekawa wrote: > Which architecture are you talking about ? > It probably depends on which architecture is emulated on which > architecture. >
HI Junichi,
I am emulating x86_64 on my i686 machine.
Reason for doing scsi emulation is because I am seeing too many ide resets and
peformance goes terribly slow.
r...@pbuilder-champaran:/# apt-get -f install
[ 208.256613] hda: ide_dma_sff_timer_expiry: DMA status (0x61)
[ 218.268438] hda: DMA timeout error
[ 218.268902] hda: dma timeout error: status=0xd8 { Busy }
[ 218.269426] hda: possibly failed opcode: 0x35
[ 218.270292] hda: DMA disabled
[ 218.270993] hdb: DMA disabled
[ 218.316555] ide0: reset: success
[ 251.716252] hda: ide_dma_sff_timer_expiry: DMA status (0x21)
[ 261.716287] hda: DMA timeout error
[ 261.720188] hda: dma timeout error: status=0xd8 { Busy }
[ 261.720188] hda: possibly failed opcode: 0x35
[ 261.720188] hda: DMA disabled
[ 261.783090] ide0: reset: success
[ 305.856252] hda: ide_dma_sff_timer_expiry: DMA status (0x21)
[ 315.893927] hda: DMA timeout error
[ 315.894420] hda: dma timeout error: status=0xd8 { Busy }
[ 315.894957] hda: possibly failed opcode: 0x35
[ 315.895407] hda: DMA disabled
[ 315.940447] ide0: reset: success
[ 349.531089] hda: ide_dma_sff_timer_expiry: DMA status (0x21)
[ 359.532395] hda: DMA timeout error
[ 359.532742] hda: dma timeout error: status=0xd8 { Busy }
[ 359.533210] hda: possibly failed opcode: 0x35
[ 359.533578] hda: DMA disabled
[ 359.580306] ide0: reset: success
Terminated
As you can see, even with 512M RAM, just loading the APT package cache cause
ide resets.
I can't find the doc where I read about scsi support. I don't know if these
arches support scsi emulation.
BTW, what about virtio ?
Ritesh
--
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."
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