[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Question regarding xentrace
Are you using xentrace_format, xentrace, and xen all from the same version ? I don't think the trace-ids are incompatible across versions, but still. Also, what HVM events are you seeing ? -dulloor On Mon, May 17, 2010 at 11:58 PM, André Bögelsack <Andre.Boegelsack@xxxxxxxxx> wrote: > Hi, > > I've made some SAP benchmarks on my Xen system and discovered a huge > difference in the performance of a "xened" SAP system compared to a native > SAP system. Hence, I tried to figure out what might cause this 'overhead' > and run a xentrace (listining to all events). Xentrace produced 24gb data > and I converted it to 27gb human-readable data by using xentrace_format. > After I gathered the human-readable data, I filtered the data and counted > the appearance of each event. So far, so good. > > Now it comes: although I used paravirt-guests, the xentrace-tool reported > HVM events in the trace data. Moreover, from my point of view it is > impossible to trace HVM events, as I use AMD Opteron 280 with no AMD-V > feature. > > Did I miss something or does the xentrace-tool report 'wrong' trace data? > > I use Xen version 3.2.0_16718_14-0.4 (from Suse). > > Thanks > André > _______________________________________________ > 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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