> 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 preference for slightly more capacity. Unfortunately very expensive SAS drives. But this works only if the server in question occur. In this case, about 15 minutes. progress. On Mon, Feb 8, 2016 at 9:13 PM, Digimer <lists at alteeve.ca> wrote:> 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 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'. > > -- > Digimer > Papers and Projects: https://alteeve.ca/w/ > What if the cure for cancer is trapped in the mind of a person without > access to education? > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > https://lists.centos.org/mailman/listinfo/centos-virt
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 rpm disks. 2T mirror (soft). In fact, I had such a > preference for slightly more capacity.Those are slow and have poor seek latency. Slow-down of other servers when one hits the disk hard has to be expected.> Unfortunately very expensive SAS drives. But this works only if the > server in question occur. > In this case, about 15 minutes. progress.I don't understand what you are saying/asking, sorry.> On Mon, Feb 8, 2016 at 9:13 PM, Digimer <lists at alteeve.ca> wrote: >> 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 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'. >> >> -- >> Digimer >> Papers and Projects: https://alteeve.ca/w/ >> What if the cure for cancer is trapped in the mind of a person without >> access to education? >> _______________________________________________ >> CentOS-virt mailing list >> CentOS-virt at centos.org >> https://lists.centos.org/mailman/listinfo/centos-virt > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > https://lists.centos.org/mailman/listinfo/centos-virt >-- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education?
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 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 > preference for slightly more capacity. > Unfortunately very expensive SAS drives. But this works only if the > server in question occur. > In this case, about 15 minutes. progress. > > > On Mon, Feb 8, 2016 at 9:13 PM, Digimer <lists at alteeve.ca> wrote: >> 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 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'. >> >> -- >> Digimer >> Papers and Projects: https://alteeve.ca/w/ >> What if the cure for cancer is trapped in the mind of a person without >> access to education? >> _______________________________________________ >> CentOS-virt mailing list >> CentOS-virt at centos.org >> https://lists.centos.org/mailman/listinfo/centos-virt > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > https://lists.centos.org/mailman/listinfo/centos-virt-- Alvin Starr || voice: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin at netvel.net ||
> 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 <alvin at netvel.net> 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 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 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 >> preference for slightly more capacity. >> Unfortunately very expensive SAS drives. But this works only if the >> server in question occur. >> In this case, about 15 minutes. progress. >> >> >> On Mon, Feb 8, 2016 at 9:13 PM, Digimer <lists at alteeve.ca> wrote: >>> >>> 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 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'. >>> >>> -- >>> Digimer >>> Papers and Projects: https://alteeve.ca/w/ >>> What if the cure for cancer is trapped in the mind of a person without >>> access to education? >>> _______________________________________________ >>> CentOS-virt mailing list >>> CentOS-virt at centos.org >>> https://lists.centos.org/mailman/listinfo/centos-virt >> >> _______________________________________________ >> CentOS-virt mailing list >> CentOS-virt at centos.org >> https://lists.centos.org/mailman/listinfo/centos-virt > > > > -- > Alvin Starr || voice: (905)513-7688 > Netvel Inc. || Cell: (416)806-0133 > alvin at netvel.net || > > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > https://lists.centos.org/mailman/listinfo/centos-virt