Re: [Libguestfs] Virt-v2v performance benchmarking part 3
On Tue, Jan 11, 2022 at 08:07:39AM +0100, Laszlo Ersek wrote:
hmmmm, not necessarily; according to the manual, "qemu-img
convert" uses
(by default) 8 co-routines. There's also the -W flag ("out of order
writes"), which I don't know if the original virt-v2v used.
I'm never sure how qemu coroutines map to threads. I assume it's not
1-1, and it's somehow connected to the iothread setting?
The -W flag was only used for -o rhv-upload and not for any other
input or output method. See write_out_of_order in the 1.44 code.
Rich.
--
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