Messages in this thread | | | Date | Wed, 12 Apr 2017 12:58:39 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH v4 0/5] perf report: Show branch type |
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On Wed, Apr 12, 2017 at 06:21:01AM +0800, Jin Yao wrote:
SNIP
> > 3. Use 2 bits in perf_branch_entry for a "cross" metrics checking > for branch cross 4K or 2M area. It's an approximate computing > for checking if the branch cross 4K page or 2MB page. > > For example: > > perf record -g --branch-filter any,save_type <command> > > perf report --stdio > > JCC forward: 27.7% > JCC backward: 9.8% > JMP: 0.0% > IND_JMP: 6.5% > CALL: 26.6% > IND_CALL: 0.0% > RET: 29.3% > IRET: 0.0% > CROSS_4K: 0.0% > CROSS_2M: 14.3%
got mangled perf report --stdio output for:
[root@ibm-x3650m4-02 perf]# ./perf record -j any,save_type kill kill: not enough arguments [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.013 MB perf.data (18 samples) ]
[root@ibm-x3650m4-02 perf]# ./perf report --stdio -f | head -30 # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 253 of event 'cycles' # Event count (approx.): 253 # # Overhead Command Source Shared Object Source Symbol Target Symbol Basic Block Cycles # ........ ....... .................... ....................................... ....................................... .................. # 8.30% perf Um [kernel.vmlinux] [k] __intel_pmu_enable_all.constprop.17 [k] native_write_msr - 7.91% perf Um [kernel.vmlinux] [k] intel_pmu_lbr_enable_all [k] __intel_pmu_enable_all.constprop.17 - 7.91% perf Um [kernel.vmlinux] [k] native_write_msr [k] intel_pmu_lbr_enable_all - 6.32% kill libc-2.24.so [.] _dl_addr [.] _dl_addr - 5.93% perf Um [kernel.vmlinux] [k] perf_iterate_ctx [k] perf_iterate_ctx - 2.77% kill libc-2.24.so [.] malloc [.] malloc - 1.98% kill libc-2.24.so [.] _int_malloc [.] _int_malloc - 1.58% kill [kernel.vmlinux] [k] __rb_insert_augmented [k] __rb_insert_augmented - 1.58% perf Um [kernel.vmlinux] [k] perf_event_exec [k] perf_event_exec - 1.19% kill [kernel.vmlinux] [k] anon_vma_interval_tree_insert [k] anon_vma_interval_tree_insert - 1.19% kill [kernel.vmlinux] [k] free_pgd_range [k] free_pgd_range - 1.19% kill [kernel.vmlinux] [k] n_tty_write [k] n_tty_write - 1.19% perf Um [kernel.vmlinux] [k] native_sched_clock [k] sched_clock - ... SNIP
jirka
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