On Mon, Feb 24, 2014 at 2:03 PM, Manuel Selva <selva.man...@gmail.com> wrote: > Hi, > > Following my investigations I reached the following documentation of > intel Vtunes amplifier tool: > > http://software.intel.com/sites/products/documentation/doclib/stdxe/2013/~amplifierxe/pmw_dp/events/offcore_response.html > Yes, that's another good source of information.
> In this document, the bit 14 is described has nothing and the bit 12 > is defined as remote cache forward AND local ram accesses. > > According to this document, to the libpfm showevtinfo and to my > experiments I am concluding that the Intel documentation is wrong, and > that offcore response events are only able to count globally Local RAM > accesses and remote cache accesses. It's impossible to count these > events separately. This idea is conforted by the existence of core > event named MEM_UNCORE_RETIRED.LOCAL_DRAM_AND_REMOTE_CACHE_HIT and the > absence of separate events. > I believe your conclusion is correct AFAIR. On Westmere, you cannot measure those event separately. You'd want to try on IvyBridge-EP (IvyTown), I think. > Nevertheless I was not able to confirm this hypothesis from an > official Intel documentation and was wondering where you (libpfm > author) got the information to write your library. > Waiting for an official answer from them as well. ------------------------------------------------------------------------------ Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
