I have tried many os like Ubuntu, centos.. Kernel versio is: both are the same result 3.5.0-49-generic 2.6.32-358.el6.x86_64
-----Original Message----- From: Stephane Eranian [mailto:eran...@googlemail.com] Sent: Thursday, December 4, 2014 9:44 AM To: Sun, Yongjie Cc: perfmon2-devel@lists.sourceforge.net Subject: Re: [perfmon2] perfmon2 CPU_CLK_UNHALTED:REF_P count error Hi, On Thu, Dec 4, 2014 at 2:39 AM, Sun, Yongjie <yongjie....@intel.com> wrote: > Current the issue is: the CPU_CLK_UNHALTED:REF_P couted value is too small > than CPU_CLK_UNHALTED:THREAD_P. is it right? From my understanding, it > should be almost same. It is none of the workload business. > Which kernel is this running on? UNHALTED_REF_CYCLES can only be measured on a fixed counter. So need kernel support for this. > -----Original Message----- > From: Stephane Eranian [mailto:eran...@googlemail.com] > Sent: Thursday, December 4, 2014 9:35 AM > To: Sun, Yongjie > Cc: perfmon2-devel@lists.sourceforge.net > Subject: Re: [perfmon2] perfmon2 CPU_CLK_UNHALTED:REF_P count error > > Hi, > > On Thu, Dec 4, 2014 at 2:31 AM, Sun, Yongjie <yongjie....@intel.com> wrote: >> I try use the syst_count: >> Result is same >> >> CPU0 G0 7,188,625 7,188,625 UNHALTED_CORE_CYCLES >> (scaling 0.00%, ena=1,999,298,896, run=1,999,298,896) >> CPU0 G0 3 3 >> UNHALTED_REFERENCE_CYCLES (scaling 0.00%, ena=1,999,336,546, >> run=1,999,336,546) >> CPU0 G0 7,303,052 7,303,052 >> CPU_CLK_UNHALTED:THREAD_P (scaling 0.00%, ena=1,999,348,997, >> run=1,999,348,997) >> CPU0 G0 545,254 545,254 CPU_CLK_UNHALTED:REF_P >> (scaling 0.00%, ena=1,999,364,938, run=1,999,364,938) >> > But what is your workload doing and on which CPU does it run. > Here it needs to run on CPU0. If you workload blocks and there is nothing > else to run on CPU0, the processor goes in halted state, and the events you > are measuring stop counting. > >> -----Original Message----- >> From: Stephane Eranian [mailto:eran...@googlemail.com] >> Sent: Thursday, December 4, 2014 9:25 AM >> To: Sun, Yongjie >> Cc: perfmon2-devel@lists.sourceforge.net >> Subject: Re: [perfmon2] perfmon2 CPU_CLK_UNHALTED:REF_P count error >> >> Hi, >> >> These Python scripts are all not maintained. >> I suggest you use the perf_examples/syst_count program instead. >> And you need to be root to run per-CPU (system-wide) measurments. >> >> >> On Thu, Dec 4, 2014 at 1:34 AM, Sun, Yongjie <yongjie....@intel.com> wrote: >>> Hi, >>> I running on Intel SNB E5-2680 >>> >>> I just used the "libpfm-4.5.0/python/sys.py" >>> ./sys.py -e >>> UNHALTED_CORE_CYCLES,UNHALTED_REFERENCE_CYCLES,CPU_CLK_UNHALTED:THRE >>> A >>> D >>> _P,CPU_CLK_UNHALTED:REF_P -c 0 >>> Result: >>> CPU0: UNHALTED_CORE_CYCLES 3229292 >>> CPU0: UNHALTED_REFERENCE_CYCLES 3 >>> CPU0: CPU_CLK_UNHALTED:THREAD_P 3266550 >>> CPU0: CPU_CLK_UNHALTED:REF_P 268798 >>> CPU0: UNHALTED_CORE_CYCLES 6834444 >>> CPU0: UNHALTED_REFERENCE_CYCLES 3 >>> CPU0: CPU_CLK_UNHALTED:THREAD_P 6897896 >>> CPU0: CPU_CLK_UNHALTED:REF_P 568677 >>> CPU0: UNHALTED_CORE_CYCLES 10782920 >>> CPU0: UNHALTED_REFERENCE_CYCLES 3 >>> CPU0: CPU_CLK_UNHALTED:THREAD_P 10876957 >>> CPU0: CPU_CLK_UNHALTED:REF_P 897739 >>> -----Original Message----- >>> From: Stephane Eranian [mailto:eran...@googlemail.com] >>> Sent: Wednesday, December 3, 2014 12:33 AM >>> To: Sun, Yongjie >>> Cc: perfmon2-devel@lists.sourceforge.net >>> Subject: Re: [perfmon2] perfmon2 CPU_CLK_UNHALTED:REF_P count error >>> >>> Hi, >>> >>> On Mon, Dec 1, 2014 at 6:24 AM, Sun, Yongjie <yongjie....@intel.com> wrote: >>>> Hi, all >>>> I use the perfmon2 to count events >>>> “UNHALTED_CORE_CYCLES,UNHALTED_REFERENCE_CYCLES,CPU_CLK_UNHALTED:THREAD_P,CPU_CLK_UNHALTED:REF_P” >>>> and got >>> >>> which CPU is this running on? >>> How long does your test run? >>> Are you running in system-wide or per-process mode? >>> Need more context to answer your question. >>> >>>> CPU0: UNHALTED_CORE_CYCLES 5538707 >>>> CPU0: UNHALTED_REFERENCE_CYCLES 3 >>>> CPU0: CPU_CLK_UNHALTED:THREAD_P 5641229 >>>> CPU0: CPU_CLK_UNHALTED:REF_P 419607 >>>> CPU0: UNHALTED_CORE_CYCLES 11661876 >>>> CPU0: UNHALTED_REFERENCE_CYCLES 3 >>>> CPU0: CPU_CLK_UNHALTED:THREAD_P 11813664 >>>> CPU0: CPU_CLK_UNHALTED:REF_P 911248 >>>> CPU0: UNHALTED_CORE_CYCLES 15682069 >>>> CPU0: UNHALTED_REFERENCE_CYCLES 3 >>>> CPU0: CPU_CLK_UNHALTED:THREAD_P 15869779 >>>> CPU0: CPU_CLK_UNHALTED:REF_P 1246315 >>>> >>>> Two questions: 1. why UNHALTED_REFERENCE_CYCLES is 3? Too small >>>> 2. why CPU0: CPU_CLK_UNHALTED:REF_P is much smaller >>>> than CPU_CLK_UNHALTED:THREAD_P? this do not make sence! >>>> >>>> BTW: I count this for I want to count the CPU Frequency from Intel’s DOC: >>>> https://software.intel.com/en-us/articles/measuring-the-average-unh >>>> a >>>> l >>>> t >>>> ed-frequency >>>> Average frequency = >>>> TSC_frequency * (CPU_CLK_UNHALTED.THREAD / CPU_CLK_UNHALTED.REF) >>>> >>>> So can anybody help on this question? >>>> >>>> >>>> ------------------------------------------------------------------- >>>> - >>>> - >>>> - >>>> -------- Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT >>>> Server from Actuate! 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Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
