[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-block] [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by alloca
From: |
Fam Zheng |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple clusters |
Date: |
Fri, 3 Nov 2017 11:50:03 +0800 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
On Thu, 11/02 17:02, John Snow wrote:
>
>
> On 10/20/2017 02:53 AM, Ashijeet Acharya wrote:
> >
> > On Fri, Oct 20, 2017 at 11:58 Fam Zheng <address@hidden
> > <mailto:address@hidden>> wrote:
> >
> > On Mon, 10/09 22:12, Fam Zheng wrote:
> > > On Mon, 10/09 18:29, Ashijeet Acharya wrote:
> > > > Optimization test results:
> > > >
> > > > This patch series improves 128 KB sequential write performance to an
> > > > empty VMDK file by 54%
> > > >
> > > > Benchmark command: ./qemu-img bench -w -c 1024 -s 128K -d 1 -t
> > none -f
> > > > vmdk test.vmdk
> > > >
> > > > Changes in v9:
> > > > - rebase the series
> > >
> > > Thanks, looks good to me, applied:
> > >
> > > https://github.com/famz/qemu/tree/staging
> >
> > Ashijeet: I've been testing my branch and it seems installing
> > Fedora/CentOS to a
> > VMDK image is broken with your patches applied. Both guest and QEMU are
> > responsive, but the installing of packages stops to make any
> > progress at some
> > point:
> >
> > Installing rootfiles.noarch (317/318)
> > Installing langpacks-en.noarch (318/318)
> > Performing post-installation setup tasks
> > Configuring fedora-release.noarch
> > Configuring filesystem.x86_64
> > Configuring GeoIP-GeoLite-data.noarch
> > Configuring python3.x86_64
> > Configuring fedora-logos.x86_64
> > Configuring kernel-core.x86_64
> >
> > # hang here
> >
> > Can you reproduce this on your machine?
> >
> > My command line is something like this:
> >
> > qemu-system-x86_64 -enable-kvm -cpu host -m 1G -qmp
> > unix:/home/fam/.q/qemu-8DOC9EF4/qmp,server,nowait -name 8DOC9EF4
> > -netdev user,id=vnet,hostfwd=:0.0.0.0 <http://0.0.0.0>:10022-:22
> > -device virtio-net-pci,netdev=vnet -drive
> > file=/var/tmp/test2.vmdk,if=none,id=drive-1,cache=none,aio=native
> > -device virtio-blk-pci,drive=drive-1 -cdrom
> > /stor/iso/CentOS-6.9-x86_64-minimal.iso -pidfile
> > /home/fam/.q/qemu-8DOC9EF4/pid
> >
> > qemu.git master doesn't have this problem. So I'll drop this series
> > from the
> > pull request until it is resolved.
> >
> >
> > Fam: Alright, I will look into this but I cannot give you a deadline
> > unfortunately. I will try my best to resolve this as soon as though.
> >
> > Ashijeet
> >
> >
> >
> > Fam
> >
>
> Do we need to temporarily roll this back for the 2.11 release if it
> cannot be addressed in time?
Hi John, it's not merged yet, I dropped it from my pull request.
Fam