On Mon, May 13, 2013 at 1:00 PM, Ren, Yongjie <yongjie.ren@xxxxxxxxx> wrote: >> -----Original Message----- >> From: Kashyap Chamarthy [mailto:kashyap.cv@xxxxxxxxx] >> Sent: Monday, May 13, 2013 3:07 PM >> To: Ren, Yongjie >> Cc: kvm@xxxxxxxxxxxxxxx >> Subject: Re: [nVMX Test] Build kernel (defconfig) on L2, w/ VMCS >> Shadowing enabled on L0 >> >> On Mon, May 13, 2013 at 11:51 AM, Kashyap Chamarthy >> <kashyap.cv@xxxxxxxxx> wrote: >> >> Comments ? >> > My test result is different from yours. In my test several days ago, > when enabling shadow VMCS, I can get ~4% performance improvement > in kernel build test in L2. Hardware is also a Haswell machine. > shadow VMCS disabled, build time: 649 seconds > shadow VMCS enabled, build time: 627 seconds. Let me try it on a new L2 guest to see if I can reproduce the behavior I reported reliably. Meantime, I noted my entire procedure https://github.com/kashyapc/nvmx-haswell/blob/master/SETUP-nVMX.rst Do you see any anomalies ? /kashyap -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
