Re: [Qemu-devel] KVM call agenda for September 25th

On Tue, Sep 25, 2012 at 04:51:15PM +0200, Kevin Wolf wrote: Am 25.09.2012 14:57, schrieb Anthony Liguori: qemu -device \ isa-serial,index=0,chr=tcp://localhost:1025/?server=onwait=off Your examples kind of prove this: They aren't much shorter than what exists today, but they contain

[RFC] CPU hard limits

Hi, This is an RFC about the CPU hard limits feature where I have explained the need for the feature, the proposed plan and the issues around it. Before I come up with an implementation for hard limits, I would like to know community's thoughts on this scheduler enhancement and any feedback and

Re: [RFC] CPU hard limits

On Thu, Jun 04, 2009 at 03:19:22PM +0300, Avi Kivity wrote: Bharata B Rao wrote: 2. Need for hard limiting CPU resource -- - Pay-per-use: In enterprise systems that cater to multiple clients/customers where a customer demands a certain share of CPU

Re: [RFC] CPU hard limits

On Fri, Jun 05, 2009 at 01:27:55PM +0800, Balbir Singh wrote: * Avi Kivity a...@redhat.com [2009-06-05 08:21:43]: Balbir Singh wrote: But then there is no other way to make a *guarantee*, guarantees come at a cost of idling resources, no? Can you show me any other combination that will

Re: [RFC] CPU hard limits

On Fri, Jun 05, 2009 at 09:03:37AM +0300, Avi Kivity wrote: Balbir Singh wrote: I think so. Given guarantees G1..Gn (0 = Gi = 1; sum(Gi) = 1), and a cpu hog running in each group, how would the algorithm divide resources? As per the matrix calculation, but as soon as we reach an

Re: [RFC] CPU hard limits

On Fri, Jun 05, 2009 at 09:01:50AM +0300, Avi Kivity wrote: Bharata B Rao wrote: But could there be client models where you are required to strictly adhere to the limit within the bandwidth and not provide more (by advancing the bandwidth period) in the presence of idle cycles ? That's

Re: [RFC] CPU hard limits

On Fri, Jun 05, 2009 at 01:53:15AM -0700, Paul Menage wrote: On Wed, Jun 3, 2009 at 10:36 PM, Bharata B Raobhar...@linux.vnet.ibm.com wrote: - Hard limits can be used to provide guarantees. This claim (and the subsequent long thread it generated on how limits can provide guarantees)

Re: [RFC] CPU hard limits

On Sun, Jun 07, 2009 at 09:04:49AM +0300, Avi Kivity wrote: Bharata B Rao wrote: On Fri, Jun 05, 2009 at 09:01:50AM +0300, Avi Kivity wrote: Bharata B Rao wrote: But could there be client models where you are required to strictly adhere to the limit within the bandwidth

Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding

On Tue, Nov 08, 2011 at 09:33:04AM -0800, Chris Wright wrote: * Alexander Graf (ag...@suse.de) wrote: On 29.10.2011, at 20:45, Bharata B Rao wrote: As guests become NUMA aware, it becomes important for the guests to have correct NUMA policies when they run on NUMA aware hosts

Re: [Qemu-devel] [RFC PATCH] Exporting Guest RAM information for NUMA binding

On Mon, Nov 21, 2011 at 04:25:26PM +0100, Peter Zijlstra wrote: On Mon, 2011-11-21 at 20:48 +0530, Bharata B Rao wrote: I looked at Peter's recent work in this area. (https://lkml.org/lkml/2011/11/17/204) It introduces two interfaces: 1. ms_tbind() to bind a thread to a memsched

Re: [PATCH 07/23] KVM: PPC: Book3S: Allow reuse of vCPU object

On Fri, Mar 20, 2015 at 12:34:18PM +0100, Alexander Graf wrote: On 20.03.15 12:26, Paul Mackerras wrote: On Fri, Mar 20, 2015 at 12:01:32PM +0100, Alexander Graf wrote: On 20.03.15 10:39, Paul Mackerras wrote: From: Bharata B Rao bhar...@linux.vnet.ibm.com Since KVM isn't

Re: [PATCH 07/23] KVM: PPC: Book3S: Allow reuse of vCPU object

On Sat, Mar 21, 2015 at 8:28 PM, Alexander Graf ag...@suse.de wrote: On 20.03.15 16:51, Bharata B Rao wrote: On Fri, Mar 20, 2015 at 12:34:18PM +0100, Alexander Graf wrote: On 20.03.15 12:26, Paul Mackerras wrote: On Fri, Mar 20, 2015 at 12:01:32PM +0100, Alexander Graf wrote

Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall

__NR_userfaultfd 364 May be it is a bit late to bring this up, but I needed the following fix to userfault21 branch of your git tree to compile on powerpc. powerpc: Bump up __NR_syscalls to account for __NR_userfaultfd From: Bharata B Rao bhar...@linux.vnet.ibm.com With userfaultfd syscall

Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall

On Tue, Aug 11, 2015 at 03:48:26PM +0200, Andrea Arcangeli wrote: Hello Bharata, On Tue, Aug 11, 2015 at 03:37:29PM +0530, Bharata B Rao wrote: May be it is a bit late to bring this up, but I needed the following fix to userfault21 branch of your git tree to compile on powerpc. Not late

Re: [PATCH v4 17/33] dimm: abstract dimm device from pc-dimm

On Mon, Oct 19, 2015 at 6:24 AM, Xiao Guangrong wrote: > A base device, dimm, is abstracted from pc-dimm, so that we can > build nvdimm device based on dimm in the later patch > > Signed-off-by: Xiao Guangrong > --- >

Re: [PATCH v3 00/32] implement vNVDIMM

Xiao, Are these patches present in any git tree so that they can be easily tried out. Regards, Bharata. On Sun, Oct 11, 2015 at 9:22 AM, Xiao Guangrong wrote: > Changelog in v3: > There is huge change in this version, thank Igor, Stefan, Paolo, Eduardo, >

Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall

On Tue, Sep 08, 2015 at 04:08:06PM +1000, Michael Ellerman wrote: > On Wed, 2015-08-12 at 10:53 +0530, Bharata B Rao wrote: > > On Tue, Aug 11, 2015 at 03:48:26PM +0200, Andrea Arcangeli wrote: > > > Hello Bharata, > > > > > > On Tue, Aug 11, 2015 at 0

Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall

On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote: > * Bharata B Rao (bhar...@linux.vnet.ibm.com) wrote: > > In fact I had successfully done postcopy migration of sPAPR guest with > > this setup. > > Interesting - I'd not got that far myself on power; I

Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall

On Tue, Sep 08, 2015 at 01:46:52PM +0100, Dr. David Alan Gilbert wrote: > * Bharata B Rao (bhar...@linux.vnet.ibm.com) wrote: > > On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote: > > > * Bharata B Rao (bhar...@linux.vnet.ibm.com) wrote: > > > &

Re: [PATCH 07/23] KVM: PPC: Book3S: Allow reuse of vCPU object

On Fri, Mar 20, 2015 at 12:34:18PM +0100, Alexander Graf wrote: On 20.03.15 12:26, Paul Mackerras wrote: On Fri, Mar 20, 2015 at 12:01:32PM +0100, Alexander Graf wrote: On 20.03.15 10:39, Paul Mackerras wrote: From: Bharata B Rao bhar...@linux.vnet.ibm.com Since KVM isn't

Re: [PATCH 07/23] KVM: PPC: Book3S: Allow reuse of vCPU object

On Sat, Mar 21, 2015 at 8:28 PM, Alexander Graf ag...@suse.de wrote: On 20.03.15 16:51, Bharata B Rao wrote: On Fri, Mar 20, 2015 at 12:34:18PM +0100, Alexander Graf wrote: On 20.03.15 12:26, Paul Mackerras wrote: On Fri, Mar 20, 2015 at 12:01:32PM +0100, Alexander Graf wrote