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Re: [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple clusters |
Date: |
Fri, 20 Oct 2017 14:27:57 +0800 |
User-agent: |
Mutt/1.9.0 (2017-09-02) |
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=:0.0.0.0:10022-: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
- [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple clusters, Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 1/8] vmdk: Move vmdk_find_offset_in_cluster() to the top, Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 2/8] vmdk: Rename get_whole_cluster() to vmdk_perform_cow(), Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 3/8] vmdk: Rename get_cluster_offset() to vmdk_get_cluster_offset(), Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 4/8] vmdk: Factor out metadata loading code out of vmdk_get_cluster_offset(), Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 5/8] vmdk: Set maximum bytes allocated in one cycle, Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 6/8] vmdk: New functions to assist allocating multiple clusters, Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 7/8] vmdk: Update metadata for multiple clusters, Ashijeet Acharya, 2017/10/09
- [Qemu-devel] [PATCH v9 8/8] vmdk: Make vmdk_get_cluster_offset() return cluster offset only, Ashijeet Acharya, 2017/10/09
- Re: [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple clusters, Fam Zheng, 2017/10/09
- Re: [Qemu-devel] [PATCH v9 0/8] Optimize VMDK I/O by allocating multiple clusters,
Fam Zheng <=