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Re: [Xen-devel] [PATCH] perfc: count number of explicit vcpu yields

To: Dario Faggioli <dario.faggioli@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxx>

From: Ian Campbell <ian.campbell@xxxxxxxxxx>

Date: Mon, 9 Nov 2015 15:23:46 +0000

Cc: george.dunlap@xxxxxxxxxx, jbeulich@xxxxxxxx

Delivery-date: Mon, 09 Nov 2015 15:24:15 +0000

List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Mon, 2015-11-09 at 16:14 +0100, Dario Faggioli wrote: >Â > > As far as xl accessibility --- doesn't xenperf already read them out? > > > Mmm... ISTR having tried without much luck, and having heard that it > wasn't functional any longer, but maybe I'm confusing it with something > else. I'll try again. I happened to have an xterm with this in its scroll buffer from earlier: root@marilith-n0:~# xenperf invalid hypercallsÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: wfiÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂ85068ÂÂÂÂÂÂÂ56068ÂÂÂÂÂÂ11762ÂÂÂÂÂÂÂ 8461ÂÂÂÂÂÂÂ8777 trap: wfeÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂ2811ÂÂÂÂÂÂÂÂÂ614ÂÂÂÂÂÂÂÂ716ÂÂÂÂÂÂÂÂ 964ÂÂÂÂÂÂÂÂ517 trap: cp15 32-bit accessÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ4ÂÂÂÂÂÂÂÂÂÂÂ1ÂÂÂÂÂÂÂÂÂÂ1ÂÂÂÂÂÂÂÂÂ Â1ÂÂÂÂÂÂÂÂÂÂ1 trap: cp15 64-bit accessÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: cp14 32-bit accessÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: cp14 64-bit accessÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: cp14 dbg accessÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: cp accessÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: 32-bit smcÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: 32-bit hvcÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂ1291ÂÂÂÂÂÂÂÂÂ510ÂÂÂÂÂÂÂÂ568ÂÂÂÂÂÂÂÂ 161ÂÂÂÂÂÂÂÂÂ52 trap: guest instr abortÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 trap: guest data abortÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂ16446ÂÂÂÂÂÂÂÂ6885ÂÂÂÂÂÂÂ4358ÂÂÂÂÂÂÂ 3431ÂÂÂÂÂÂÂ1772 trap: condition failedÂÂÂÂÂÂÂÂÂÂÂÂÂÂT=ÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂÂ0ÂÂÂÂÂÂÂÂÂ Â0ÂÂÂÂÂÂÂÂÂÂ0 [...] So I think it works. You need to build the hypervisor binary with perfc=y (and optionally perfc_arrays=y) or it doesn't do anything. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel

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