** Changed in: qemu
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/1036363
Title:
Major network performance problems on AMD hardware
Status in QEMU:
Won't F
Looking through old bug tickets... can you still reproduce this issue
with the latest version of QEMU? Or could we close this ticket nowadays?
** Changed in: qemu
Status: New => Incomplete
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Okay, looks like the performance issue started with introduction of
pc-0.15 machine profile in version 1.0.1. I'll narrow the problem down
further.
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Thank Stefan,
I compiled both 0.15 and 1.0 and they do not have that problem... but
Fedora package does. Perhaps the way Fedora package was compiled? I'm
going to grab a source package and attempt to compile from that.
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On Sun, Aug 26, 2012 at 1:08 AM, Ziemowit Pierzycki
wrote:
> Executed another test:
>
> F16 KVM <-- 15 gbps --> F17 VM
>
> So why is F16 much faster?
You could try "bisecting" to find the change that slowed down networking:
$ git clone git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git
$ cd qemu
Executed another test:
F16 KVM <-- 15 gbps --> F17 VM
So why is F16 much faster?
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Title:
Major network performance problems on AMD hardware
S
I ran another test and here is a recap:
F16 KVM <-- 20gbps --> F16 VM
F17 KVM <-- 4 gbps --> 16 VM
F17 KVM <-- 4 gbps --> 17 VM
I'll check F16 KVM with both F16 and F17 VMs. This is all done on my
Intel core i3.
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Well this is embarrasing. Other Intel KVMs are having the same problem.
The test where I got 20 gbps was actually on a Fedora 16 VM running on
Fedora 16 KVM. I reinstalled both KVM and VM with Fedora 17 and best I
got was 4 gbps.
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** Also affects: qemu-kvm
Importance: Undecided
Status: New
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Title:
Major network performance problems on AMD hardware
Status in QEMU
I would also like to add that a VM running Windows 2008 R2 is having the
same identical problem too.
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Title:
Major network performance problems
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