AArnaldo Carvalho de Meloperf pmu-events x86: Use CPU_CLK_UNHALTED.THREAD in Kernel_Utilization metric
| 文件 | 最后提交记录 | 最后更新时间 |
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perf pmu-events x86: Use CPU_CLK_UNHALTED.THREAD in Kernel_Utilization metric The kernel utilization metric does multiplexing currently and is somewhat unreliable. The problem is that it uses two instances of the fixed counter, and the kernel has to multipleplex which causes errors. So should use CPU_CLK_UNHALTED.THREAD instead. Before: # perf stat -M Kernel_Utilization -- sleep 1 Performance counter stats for 'sleep 1': 1,419,425 cpu_clk_unhalted.ref_tsc:k <not counted> cpu_clk_unhalted.ref_tsc (0.00%) After: # perf stat -M Kernel_Utilization -- sleep 1 Performance counter stats for 'sleep 1': 746,688 cpu_clk_unhalted.thread:k # 0.7 Kernel_Utilization 1,088,348 cpu_clk_unhalted.thread Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200309013125.7559-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 6 年前 | |
perf vendor events intel: Update Broadwell-DE events to v7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: https://lkml.kernel.org/r/20190315165219.GA21223@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 7 年前 | |
perf vendor events intel: Update BroadwellDE events to V7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20180118234518.GA27753@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 8 年前 | |
perf vendor events intel: Update BroadwellDE events to V7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20180118234518.GA27753@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 8 年前 | |
perf vendor events intel: Update BroadwellDE events to V7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20180118234518.GA27753@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 8 年前 | |
perf vendor events intel: Update BroadwellDE events to V7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20180118234518.GA27753@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 8 年前 | |
perf vendor events intel: Update Broadwell-DE events to v7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: https://lkml.kernel.org/r/20190315165219.GA21223@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 7 年前 | |
perf vendor events intel: Update Intel uncore JSON event files - Add MetricName to describe Metric - Remove redundant "derived from" in descriptions - Rename UNC_M_CAS_COUNT to LLC_MISSES.READ Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170320201711.14142-9-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 9 年前 | |
perf vendor events intel: Add missing UNC_M_DCLOCKTICKS for Broadwell DE uncore An earlier update removed the UNC_M_CLOCKTICKS event for Broadwell DE. But Metric events were still referring to it. This adds it back under a different name from the event list, and also fixes up the Metric events to use the new name. Cc: jolsa@kernel.org Link: http://lkml.kernel.org/n/tip-zxxzg4g5nr93o7np00vgqqwm@git.kernel.org Signed-off-by: Andi Kleen <ak@linux.intel.com> | 9 年前 | |
perf vendor events intel: Update Intel uncore JSON event files - Add MetricName to describe Metric - Remove redundant "derived from" in descriptions - Rename UNC_M_CAS_COUNT to LLC_MISSES.READ Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170320201711.14142-9-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 9 年前 | |
perf vendor events intel: Update BroadwellDE events to V7 Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20180118234518.GA27753@tassilo.jf.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> | 8 年前 |