Re: [CentOS-virt] KVM

>>> If you run top what are you seeing on the %Cpu(s) line? http://i.hizliresim.com/NrmV9Y.png On Mon, Feb 8, 2016 at 10:53 PM, Alvin Starr wrote: > You need to provide more information. > 20% is what number. > There are something like 6 numbers on that line. > > > On

Re: [CentOS-virt] KVM

Am 08.02.2016 um 22:25 schrieb Gokan Atmaca: If you run top what are you seeing on the %Cpu(s) line? http://i.hizliresim.com/NrmV9Y.png That's not a CentOS system. You should probably consult the community providing support for your Debian or Ubuntu based system. I see you run MySQL, so

Re: [CentOS-virt] KVM

> If you run top what are you seeing on the %Cpu(s) line? %20 On Mon, Feb 8, 2016 at 9:30 PM, Alvin Starr wrote: > Slow disks will show up as higher I/Owait times. > If your seeing 99% cpu usage then your likely looking at some other problem. > > If you run top what are you

Re: [CentOS-virt] KVM

You need to provide more information. 20% is what number. There are something like 6 numbers on that line. On 02/08/2016 02:56 PM, Gokan Atmaca wrote: If you run top what are you seeing on the %Cpu(s) line? %20 On Mon, Feb 8, 2016 at 9:30 PM, Alvin Starr wrote: Slow disks

Re: [CentOS-virt] KVM

On Mon, Feb 8, 2016 at 2:53 PM, Alvin Starr wrote: > You need to provide more information. > 20% is what number. > There are something like 6 numbers on that line. > > Post commands and results of command outputs ___ CentOS-virt

Re: [CentOS-virt] KVM

> Are the disk partitions properly aligned to 4k boundary on the host (and in > the guests too) ? > There are 5 in total server. 32G ram. 2T r1 (soft) disk. On Mon, Feb 8, 2016 at 9:41 PM, Zoltan Frombach wrote: > Are the disk partitions properly aligned to 4k boundary on

Re: [CentOS-virt] KVM

On 08/02/16 02:20 PM, Gokan Atmaca wrote: >> I'm guessing you're using standard 7,200rpm platter drives? You'll need >> to share more information about your environment in order for us to >> provide useful feedback. Usually though, the answer is 'caching' and/or >> 'faster disks'. > > Yes , 7.2k

Re: [CentOS-virt] KVM

Are the disk partitions properly aligned to 4k boundary on the host (and in the guests too) ? See http://www.ibm.com/developerworks/library/l-linux-on-4kb-sector-disks/index.html and this: http://unix.stackexchange.com/questions/247387/check-if-partitions-are-aligned-properly-for-performance

Re: [CentOS-virt] KVM

On 08/02/16 02:12 PM, Gokan Atmaca wrote: > Hello > > I use KVM. In a virtual machine "jbd2 dm-0" disk I / O is very > increases. It consumes up to 99%. For this reason, slowing down the > other virtual machine. What should I do to solve the problem. ? > > Thanks.. I'm guessing you're using

Re: [CentOS-virt] KVM

> I'm guessing you're using standard 7,200rpm platter drives? You'll need > to share more information about your environment in order for us to > provide useful feedback. Usually though, the answer is 'caching' and/or > 'faster disks'. Yes , 7.2k rpm disks. 2T mirror (soft). In fact, I had such a

[CentOS-virt] KVM

Hello I use KVM. In a virtual machine "jbd2 dm-0" disk I / O is very increases. It consumes up to 99%. For this reason, slowing down the other virtual machine. What should I do to solve the problem. ? Thanks.. ___ CentOS-virt mailing list

Re: [CentOS-virt] KVM

Slow disks will show up as higher I/Owait times. If your seeing 99% cpu usage then your likely looking at some other problem. If you run top what are you seeing on the %Cpu(s) line? On 02/08/2016 02:20 PM, Gokan Atmaca wrote: I'm guessing you're using standard 7,200rpm platter drives? You'll

Re: [CentOS-virt] KVM

Using *top *and looki at *'wa' *value can tell you I/O wait time for each CPU Dont forget to press "*1*" to expand list of CPUs Tasks: 501 total, 4 running, 497 sleeping, 0 stopped, 0 zombie Cpu0 : 31.9%us, 52.7%sy, 0.0%ni, 15.1%id, *0.0%wa*, 0.0%hi, 0.3%si, 0.0%st Cpu1 : 29.7%us,