On Tuesday, October 19, 2021 6:45:44 PM CEST Paolo Bonzini wrote:
> On my system (a relatively recent laptop) I get 15-20 MiB per second,
> which is slow but not as slow as what you got. Out of curiosity, can
> you test what you get with the following kernel patch?
>
> diff --git a/arch/x86/kvm
On 10/10/21 21:10, Adam Lackorzynski wrote:
Use DMA transfers in the multiboot loader to copy
data.
This significantly lowers QEMU's startup latency by
a factor of about 40, for example, going from 30sec
to 0.8sec when loading modules of 120MB in size.
This change has been used successfully for
CCing Paolo since kvm-unit-tests use multiboot.
On Sun, Oct 10, 2021 at 09:10:05PM +0200, Adam Lackorzynski wrote:
Use DMA transfers in the multiboot loader to copy
data.
This significantly lowers QEMU's startup latency by
a factor of about 40, for example, going from 30sec
to 0.8sec when loadi
Use DMA transfers in the multiboot loader to copy
data.
This significantly lowers QEMU's startup latency by
a factor of about 40, for example, going from 30sec
to 0.8sec when loading modules of 120MB in size.
This change has been used successfully for some time.
Signed-off-by: Marcus Hähnel
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