Messages in this thread | | | Date | Tue, 27 Oct 2009 14:00:00 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 3/3] perf top: Support userspace symbols too |
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* Arnaldo Carvalho de Melo <acme@redhat.com> wrote:
> Example: > > Compiling the kernel with 'make -k 22 allyesconfig' > > [root@emilia linux-2.6-tip]# perf top -r 90 > ------------------------------------------------------------------------------ > PerfTop: 3669 irqs/sec kernel:59.9% [1000Hz cycles], (all, 8 CPUs) > ------------------------------------------------------------------------------ > > samples pcnt function DSO > _______ _____ ________________________________ ________________ > > 3062.00 6.5% clear_page_c [kernel] > 2233.00 4.8% _int_malloc /lib64/libc-2.5.so > 2100.00 4.5% yylex /home/acme/git/build/allyesconfig/scripts/genksyms/genksyms > 2029.00 4.3% memset /lib64/libc-2.5.so > 1224.00 2.6% page_fault [kernel] > 1075.00 2.3% __GI_strlen /lib64/libc-2.5.so > 863.00 1.8% sub_preempt_count [kernel] > 822.00 1.8% __GI_memcpy /lib64/libc-2.5.so > 810.00 1.7% __GI_vfprintf /lib64/libc-2.5.so > 786.00 1.7% _int_free /lib64/libc-2.5.so > 775.00 1.7% __GI_strcmp /lib64/libc-2.5.so > 748.00 1.6% _spin_lock [kernel] > 699.00 1.5% main /home/acme/git/build/allyesconfig/scripts/basic/fixdep > 659.00 1.4% add_preempt_count [kernel] > 649.00 1.4% yyparse /home/acme/git/build/allyesconfig/scripts/genksyms/genksyms > 645.00 1.4% preempt_trace [kernel] > 635.00 1.4% __GI___libc_free /lib64/libc-2.5.so > 597.00 1.3% trace_preempt_on [kernel] > 551.00 1.2% __GI___libc_malloc /lib64/libc-2.5.so > 516.00 1.1% _spin_lock_irqsave [kernel] > 481.00 1.0% copy_user_generic_string [kernel] > 479.00 1.0% unmap_vmas [kernel] > 429.00 0.9% _IO_file_xsputn_internal /lib64/libc-2.5.so > 425.00 0.9% __GI_strncpy /lib64/libc-2.5.so > 416.00 0.9% get_page_from_freelist [kernel] > 414.00 0.9% malloc_consolidate /lib64/libc-2.5.so > 406.00 0.9% get_parent_ip [kernel] > 362.00 0.8% __rmqueue [kernel] > 347.00 0.7% in_lock_functions [kernel] > 316.00 0.7% __d_lookup [kernel] > > [root@emilia linux-2.6-tip]#
That's a really nice feature! I tried it and works well here too.
Ingo
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