[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Credit scheduler anamoly
I will get the latest xen-unstable and try it again. Thanks ! Pradeep > -----Original Message----- > From: Emmanuel Ackaouy [mailto:ack@xxxxxxxxxxxxx] > Sent: Wednesday, November 22, 2006 4:57 AM > To: Padala, Pradeep > Cc: xen-devel@xxxxxxxxxxxxxxxxxxx > Subject: Re: [Xen-devel] Credit scheduler anamoly > > Are you running a xen-unstable build containing this > changeset from November 1st? > > There was a bug in the cap mechanism -- found by your > colleagues at HP -- when a physical CPU was contended. This > changeset seems to have made things better. > > changeset: 12202:9a4274724794 > user: Emmanuel Ackaouy <ack@xxxxxxxxxxxxx> > date: Wed Nov 01 19:44:34 2006 +0000 > summary: [XEN] Fix credit scheduler cap mechanism not to > over park VCPUs > > > On Tue, Nov 21, 2006 at 04:07:00PM -0600, Padala, Pradeep wrote: > > I sent the following mail without subscribing to the list, and I am > > not sure whether the list accepts mails from non-members. I just > > subscribed and re-sending the mail. I apologize if you > receive multiple copies. > > > > Hi, > > > > I am using the credit scheduler in the xen-unstable trunk and I am > > trying to set a cap on the container CPU entitlement. I > have two VMs > > and two CPUs. The two VMs are restricted to one CPU using > the command > > xm vcpu-pin. Now, I want to cap the container CPU > consumption say to > > 4% and 26% of the ONE CPU. > > > > So, I use the following commands. > > > > xm sched-credit -d 73 -c 4 > > xm sched-credit -d 74 -c 26 > > > > When I run Xentop, I see this > > > > apache.padalap.1 ------ 83 7.0 ... > > apache.padalap.2 -----r 154 25.5 ... > > > > How is this possible when I cap the first VM to 4% ? Am I > missing some > > thing ? Does credit scheduler fail to enforce small caps ? > Note that I > > haven't changed the weights and they are set to default 256 each. > > > > Thanks, > > Pradeep > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@xxxxxxxxxxxxxxxxxxx > > http://lists.xensource.com/xen-devel > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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