[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
[Expired for kvm (Ubuntu) because there has been no activity for 60 days.] ** Changed in: kvm (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kvm/+bug/703811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
** Changed in: kvm (Ubuntu) Assignee: Serge Hallyn (serge-hallyn) => (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kvm/+bug/703811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Hm, one thing we've never tried (or at least logged): do you get the same problem when you use non-virtio network? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
I dont have any raids configured at my laptop but had on my production server and the reason, the reason why i've installed kvm on laptop was that i was thinking that its raid problem :) and to reproduce (for me) only i've got to do is fresh ubuntu installation with kvm. i dont know, may be its up to my hardware specs and some of kvm / libvirt code part. but the patch u've provided seems to solve the problem. so there must be something in the changelog -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
If you would, please provide all details needed to recreate your software RAID setup, and I'll see if I can reproduce that way. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
At this point the only thing I"ve not reproduced is software raid. I simply cannot reproduce this, with or without libvirt, with virtio, with multiple CPUS and small or large amounts of memory, and with all of the xml segment above used as the basis for a libvirt VM definition. ** Changed in: kvm (Ubuntu) Status: In Progress => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
** Changed in: kvm (Ubuntu) Status: Incomplete => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
test cefb1457-6927-3fde-d0f1-a94c6c1aecb0 393216 393216 2 hvm destroy restart restart /usr/bin/kvm and i run the kvm guest on image. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Quoting Roman R (703...@bugs.launchpad.net): > Have You tried the virt-manager and do You still need my confs? > Sorry, i was away for a while. No, sorry, I've not been in an enviroment where I could use the gui. Please do upload your confs if you can. Otherwise I should be able to run virt-manager by the end of the week. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Have You tried the virt-manager and do You still need my confs? Sorry, i was away for a while. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
i will provide config files as soon as i get to laptop. meanwhile i'm usind virt-manager to create kvm guests try it out. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
I've also tried with 3 VMs each with 30G qcow2 and raw formatted drives, still with no success in trying to reproduce. Please give the full kvm command (and, if using libvirt, libvirt.xml files) for the hosts which cause this problem. Are you using ecryptfs to back the guest image files? ** Changed in: kvm (Ubuntu) Status: In Progress => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
I'm currently trying to reproduce this on a fully uptodate maverick (no -updates) box. I have 3 lucid vm's up, each of which started as a server instance and is doing 'apt-get install openoffice.org' to tax disk (and network). I'm not getting the behavior you are seeing though. Each VM has its own 30G LVM volume for a root disk, and I'm running each with: kvm -drive file=/dev/data/vm1,if=virtio,index=0,boot=on -m 1G -smp 2 -vnc :1 kvm -drive file=/dev/data/vm2,if=virtio,index=0,boot=on -m 1G -smp 2 -vnc :2 kvm -drive file=/dev/data/vm3,if=virtio,index=0,boot=on -m 1G -smp 2 -vnc :3 Of course at times each kvm process hits 100% of a cpu, but they're absolutely not staying there, and I don't see anything like flush-252:0 even making it into 'top' results. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
** Changed in: kvm (Ubuntu) Status: Incomplete => In Progress ** Changed in: kvm (Ubuntu) Assignee: (unassigned) => Serge Hallyn (serge-hallyn) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
well, as problem solving takes so much time, i had to switch to proxmox, no such problems there. but i still have ubuntu 10.10 with kvm on my laptop, so if there will be something for testing, let me know i will be glad to help with this bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Quoting Roman R (703...@bugs.launchpad.net): > anything? Back-porting the full 0.13.0 to maverick is not going to be allowed. Finding the patches to cherrypick to fix this is on my to-do list. The first step will be to re-create it myself reliably. I've not yet had a chance to do that. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
anything? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
well, didt help much. still flush process takes up to 46% cpu. i didnt tested much though.. with the edgers version it was 0-1% all the time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
ok. ill give it a try. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Quoting Roman R (703...@bugs.launchpad.net): > and same on the laptop. ive removed the edgers repo, added yours, > removed qemu-kvm, isntalled it back and same versions as above are on > the semi-production server. > > something is wrong. Right, it's because you have the proposed pocket in your sources.list. I've uploaded a new version to my ppa which will supersede the one in -proposed. The last 3 builds have been pretty speedy, so hopefully this will be available within the hour. After that, apt-get update && apt-get dist-upgrade should install qemu-kvm version 0.12.5+noroms-0ubuntu7.1virtio2.diff. Sorry about that. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
and same on the laptop. ive removed the edgers repo, added yours, removed qemu-kvm, isntalled it back and same versions as above are on the semi-production server. something is wrong. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
no, i try to update on the semi-production server, not on my laptop atm i've got this: ii qemu-common 0.12.5+noroms-0ubuntu7.1 ii qemu-kvm 0.12.5+noroms-0ubuntu7.1 Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Quoting Roman R (703...@bugs.launchpad.net): > i'm not able to update my current packages for my 10.10 host using this > ppa repo. apt says no updates avalible. This might be because you still have the version from the server-edgers ppa? You should be able to apt-get remove qemu-kvm apt-get update apt-get install qemu-kvm then make sure that dpkg -l | grep qemu shows that you have version 0.12.5+noroms-0ubuntu7virtio1. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
i'm not able to update my current packages for my 10.10 host using this ppa repo. apt says no updates avalible. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
The package is built at ppa:serge-hallyn/virt. You can browse to https://launchpad.net/~serge-hallyn/+archive/virt?field.series_filter=maverick to manually download the qemu-kvm packages, or use add-apt-repository. Please let us know if it gets any better. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
okay, i'll wait to get it tested. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
The latest upstream version has too many changes to backport to a stable release, but if we can identify one or a few patches which fix the problem, we can cherrypick those. In particular, I'm wondering whether the one below is part of the problem. I'll push a package to a ppa for you to test with hopefully later today. commit de6c8042ec55da18702fa51f09072fcaa315edc3 Author: Stefan Hajnoczi Date: Fri May 14 22:52:30 2010 +0100 virtio-blk: Avoid zeroing every request structure The VirtIOBlockRequest structure is about 40 KB in size. This patch avoids zeroing every request by only initializing fields that are read. The other fields are either written to or may not be used at all. Oprofile shows about 10% of CPU samples in memset called by virtio_blk_alloc_request(). The workload is dd if=/dev/vda of=/dev/null iflag=direct bs=8k running concurrently 4 times. This patch makes memset disappear to the bottom of the profile. Signed-off-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
1. installed the latest kernel, was not able to connect to QEMU in virt-manager :( it just stays in Connecting state. 2.. installed latest qemu-kvm and kvm packages, still not able to connect to it. no information in logs :( during the os boot got this error: init: ureaded main process (265) virt-manager is latest. 3. desided to boot from old kernel with new kvm/qemu and there is no more this error. could You please release this patched qemu-kvm and kvm for maverick? thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
i'll try to test it right a way. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Quoting Roman R (703...@bugs.launchpad.net): > Well, just installed ubuntu 10.10 guest on the 10.10 host on my laptop > and i see the same problem. its fresh install and all i've done just run > apt-get update and apt-get dist-upgrade and the flush-252:0 process > started to use from 12% upto 100% of cpu. > > any ideas? Thanks for testing that. Next it would be helpful to test (separately) both the latest kernel and the latest qemu-kvm versions. The most recent qemu-kvm upstream build is at https://launchpad.net/~ubuntu-server-edgers/+archive/server-edgers-qemu-kvm The kernel daily build is at http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/2011-01-19-natty/ It is for natty, but should work fine in maverick. You can just download http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/2011-01-19-natty/linux-image-2.6.37-999-generic_2.6.37-999.201101190911_amd64.deb and install it with dpkg -i. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Well, just installed ubuntu 10.10 guest on the 10.10 host on my laptop and i see the same problem. its fresh install and all i've done just run apt-get update and apt-get dist-upgrade and the flush-252:0 process started to use from 12% upto 100% of cpu. any ideas? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
If the bug is about software RAID, then we'll re-target the Affects line and try to diagnose. The kernel team may be able to help in that case as well. Thanks, looking forward to the results. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Thank You for reply. Actually i was thinking the same about software raid. I will try kvm on my laptop and see if the problem still exists. cant try on same server atm, there are some virtual m$ servers, which are in use. i will report as soon as i can. What we could do if it is all about software raid? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
Thanks for taking the time to report this bug and make Ubuntu better. I've not sseen this behavior locally using virtio back-ends in Lucid. I wonder whether the software raid could have something to do with it. Is there any way you could hook up another disk, without raid, and try to reproduce? ** Changed in: kvm (Ubuntu) Status: New => Incomplete ** Changed in: kvm (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
i still have this problem and cant use any of 10.04 nor 10.10 ubuntu linux in production. no-one interested? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 703811] Re: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process
same history with 10.10 which i'm currently running instead of 10.04.1 LTS -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/703811 Title: kvm guest's cpu usage with virtio storage driver goes up to 100% because of flush process -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs