Hi,
I found an obvious performance downgrade when virtio-console combined
with virtio-pci-blk.
This phenomenon exists in nearly all Qemu versions and all Linux
(CentOS7, Fedora 28, Ubuntu 18.04) distros.
This is a disk cmd:
-drive
file=iscsi://127.0.0.1:3260/iqn.2016-02.com.test:system:fl-iscsi/
Hi Dave,
My comments are in-line.
Dr. David Alan Gilbert 于2018年10月1日周一 下午7:41写道：
>
> * Feng Li (lifeng1...@gmail.com) wrote:
> > Hi,
> > I found an obvious performance downgrade when virtio-console combined
> > with virtio-pci-blk.
> >
> > This phenomenon ex
mance
downgrade is still obvious.
Could anyone give some help about this issue?
Feng Li 于2018年10月1日周一 下午10:58写道：
>
> Hi Dave,
> My comments are in-line.
>
> Dr. David Alan Gilbert 于2018年10月1日周一 下午7:41写道：
> >
> > * Feng Li (lifeng1...@gmail.com) wrote:
> > > Hi,
>
Hi Amit,
Thanks for your response.
See inline comments.
Amit Shah 于2018年10月16日周二 上午2:51写道：
>
> On (Thu) 11 Oct 2018 [18:15:41], Feng Li wrote:
> > Add Amit Shah.
> >
> > After some tests, we found:
> > - the virtio serial port number is inversely proportional t
When I'm testing the vhost-user-blk, and I found the features bits in
guest os are not the same as the setting in vhost backend.
After digging into the details, I found there are two different
features set path.
One is the vhost-user socket path VHOST_USER_GET_FEATURES, the another is:
220 static
Hi, I use gdb on Fedora 34. Qemu is the master branch and Fedora 34
repo(qemu-kvm-5.2.0-5.fc34.1.x86_64).
(gdb) c
Continuing.
[LWP 3726555 exited]
^C
Thread 1 "qemu-kvm" received signal SIGINT, Interrupt.
0x7fef9d163afe in ppoll () from /lib64/libc.so.6
(gdb) bt
#0 0x7fef9d163afe in ppoll
