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xen-devel
Re: [Xen-devel] VT is comically slow
Petersson, Mats wrote:
Are indications of IDE being used in PIO mode. Why this is, don't ask
me...
A friend is trying out OpenBSD inside Xen, which shows more clearly
that HVM guests are indeed using PIO :(
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA,
channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <QEMU HARDDISK>
wd0: 16-sector PIO, LBA, 20480MB, 41943040 sectors
wd0(pciide0:0:0): using PIO mode 2
pciide0: channel 1 disabled (no drives)
That explains a lot...
--
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
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