Re: Equivalent of vmware SIOC (Storage IO Control) in KVM

2013-10-14 Thread Paolo Bonzini
Il 14/10/2013 00:13, Andrey Korolyov ha scritto: Hello, By the way, is there plans to enhance qemu I/O throttling to able to swallow peaks or to apply various disciplines? Current one-second flat discipline seemingly is not enough for uneven workloads especially when there is no alternative

Re: Equivalent of vmware SIOC (Storage IO Control) in KVM

2013-10-13 Thread Paolo Bonzini
Il 12/10/2013 08:09, Soumendu Satapathy (sosatapa) ha scritto: Do we have an equivalent of vmware SIOC like feature in KVM? Yes, you have two choices: 1) use cgroups to throttle I/O at the level of the host disk (i.e. multiple virtual disks stored on the same disk share the limit). If you're

Re: Equivalent of vmware SIOC (Storage IO Control) in KVM

2013-10-13 Thread Andrey Korolyov
Hello, By the way, is there plans to enhance qemu I/O throttling to able to swallow peaks or to apply various disciplines? Current one-second flat discipline seemingly is not enough for uneven workloads especially when there is no alternative like cgroups for nbd usage. Thanks! On Sun, Oct 13,

Re: Equivalent of vmware SIOC (Storage IO Control) in KVM

2013-10-13 Thread Fam Zheng
On Mon, 10/14 02:13, Andrey Korolyov wrote: Hello, By the way, is there plans to enhance qemu I/O throttling to able to swallow peaks or to apply various disciplines? Current one-second flat discipline seemingly is not enough for uneven workloads especially when there is no alternative like

RE: Equivalent of vmware SIOC (Storage IO Control) in KVM

2013-10-13 Thread Wangshen (Peter)
on Sunday, October 13, 2013 9:27 PM, Paolo Bonzini wrote: Il 12/10/2013 08:09, Soumendu Satapathy (sosatapa) ha scritto: Do we have an equivalent of vmware SIOC like feature in KVM? Yes, you have two choices: 1) use cgroups to throttle I/O at the level of the host disk (i.e. multiple

Re: Equivalent of vmware SIOC (Storage IO Control) in KVM

2013-10-13 Thread Fam Zheng
On Mon, 10/14 02:18, Wangshen (Peter) wrote: on Sunday, October 13, 2013 9:27 PM, Paolo Bonzini wrote: Il 12/10/2013 08:09, Soumendu Satapathy (sosatapa) ha scritto: Do we have an equivalent of vmware SIOC like feature in KVM? Yes, you have two choices: 1) use cgroups to