* how to see glibc symbol when using perf to profile programs
@ 2013-09-26 1:26 caobenzhi
2013-09-26 9:04 ` caobenzhi
0 siblings, 1 reply; 2+ messages in thread
From: caobenzhi @ 2013-09-26 1:26 UTC (permalink / raw)
To: linux-perf-users
Hi, everyone~ recently I use perf to see the bottleneck of my program.
But I encounter a problem: I cann't use which function in glibc was called.
The command I use were like follows:
perf record -g ./wc ~/data/wc/10MB.txt -n 1
perf report -g
And the results I get were like follows:
48.13% wc libc-2.15.so [.] 0x000000000008c5a9
12.29% wc [kernel.kallsyms] [k] clear_page_c
Also when I enter the libc-2.15.so, the results were as follows:
48.13% wc libc-2.15.so [.] 0x000000000008c5a9
+ 0x7f5adf1a05bd
+ 0x7f5adf1a05a9
+ 0x7f5adf245e5e
0x7f5adf26231e
0x1
0x7f5adf2622e6
0x1
I cann't see which functions in glibc was called.
Do anyone who know how to fix that problem?
Thanks a lot~
Emily
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