On Sun, Jan 24, 2016 at 10:53:23PM +0900, Namhyung Kim wrote: > Hello, > > This patchset tries to implement percent limit to callchains which was > requested by Andi Kleen. For some reason, limiting callchains by > (overhead) percentage didn't work well. This patch fixes it and make > --percent-limit also works for callchains as well as hist entries. > > This is available on 'perf/callchain-limit-v1' branch in my tree: > > git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git > > Any comments are welcome, > > Thanks, > Namhyung > > > Namhyung Kim (12): > perf report: Apply --percent-limit to callchains also > perf report: Apply callchain percent limit on --stdio > perf report: Get rid of hist_entry__callchain_fprintf() > perf report: Fix percent calculation on --stdio > perf report: Hide output pipe for percent-limited callchains on stdio > perf hists browser: Fix dump to show correct callchain style > perf hists browser: Fix callchain_node__count_rows() > perf hists browser: Apply callchain percent limit > perf hists browser: Fix callchain counting when press ENTER key > perf hists browser: Fix counting callchains when expand/collapse all > perf hists browser: Update percent base for fractal callchain mode > perf report: Fix callchain percent limit on --gtk
is 0.5 the default or one has to use the --percent-limit 0.5
for the limit to be effective?
without the option I'm getting empty callchains that are below 0.5
but only in TUI mode (attached).. --stdio shows them all unfolded
thanks,
jirka
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+ 46.69% 46.69% ls [kernel.vmlinux] [k] intel_bts_enable_local
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] perf_pmu_enable.part.87
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+ 0.08% 0.00% perf [kernel.vmlinux] [k]
perf_event_context_sched_in
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] perf_event_exec
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] setup_new_exec
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] load_elf_binary
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] search_binary_handler
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] do_execveat_common.isra.33
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] sys_execve
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+ 0.08% 0.00% perf [kernel.vmlinux] [k] return_from_execve
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- 0.08% 0.00% perf [unknown] [k] 0x00007f2175b35e07
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- 0.04% 0.00% perf [kernel.vmlinux] [k] perf_event_nmi_handler
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- 0.04% 0.00% perf [kernel.vmlinux] [k] nmi_handle
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- 0.04% 0.00% perf [kernel.vmlinux] [k] default_do_nmi
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- 0.04% 0.00% perf [kernel.vmlinux] [k] do_nmi
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- 0.04% 0.00% perf [kernel.vmlinux] [k] end_repeat_nmi
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- 0.04% 0.04% perf [kernel.vmlinux] [k] x86_pmu_enable
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- 0.04% 0.04% perf [kernel.vmlinux] [k] native_apic_mem_write
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