Re: [libvirt-users] VM I/O performance drops dramatically during storage migration with drive-mirror

2018-05-29 Thread Eric Blake
On 05/28/2018 07:05 AM, Kashyap Chamarthy wrote: Cc the QEMU Block Layer mailing list (qemu-bl...@nongnu.org), who might have more insights here; and wrap long lines. ... 170 to less than 10. I also show the figure of this experiment in the attachment of this email. [The attachment should ar

Re: [libvirt-users] VM I/O performance drops dramatically during storage migration with drive-mirror

2018-05-29 Thread Chunguang Li
> -Original Messages- > From: "Kashyap Chamarthy" > Sent Time: 2018-05-28 21:19:14 (Monday) > To: "Chunguang Li" > Cc: libvirt-users@redhat.com, qemu-bl...@nongnu.org, dgilb...@redhat.com > Subject: Re: [libvirt-users] VM I/O performance drops dr

Re: [libvirt-users] VM I/O performance drops dramatically during storage migration with drive-mirror

2018-05-29 Thread Chunguang Li
> -Original Messages- > From: "Kashyap Chamarthy" > Sent Time: 2018-05-28 20:05:05 (Monday) > To: "Chunguang Li" > Cc: libvirt-users@redhat.com, qemu-bl...@redhat.com, dgilb...@redhat.com > Subject: Re: [libvirt-users] VM I/O performance drops dr

Re: [libvirt-users] VM I/O performance drops dramatically during storage migration with drive-mirror

2018-05-28 Thread Kashyap Chamarthy
On Mon, May 28, 2018 at 02:05:05PM +0200, Kashyap Chamarthy wrote: > Cc the QEMU Block Layer mailing list (qemu-bl...@nongnu.org), [Sigh; now add the QEMU BLock Layer e-mail list to Cc, without typos.] > who might > have more insights here; and wrap long lines. > > On Mon, May 28, 2018 at 06:07

Re: [libvirt-users] VM I/O performance drops dramatically during storage migration with drive-mirror

2018-05-28 Thread Kashyap Chamarthy
Cc the QEMU Block Layer mailing list (qemu-bl...@nongnu.org), who might have more insights here; and wrap long lines. On Mon, May 28, 2018 at 06:07:51PM +0800, Chunguang Li wrote: > Hi, everyone. > > Recently I am doing some tests on the VM storage+memory migration with > KVM/QEMU/libvirt. I use