Messages in this thread | | | Date | Wed, 12 Aug 2009 13:03:07 +0200 | From | Ingo Molnar <> | Subject | Re: [GIT PULL] tracing: Syscalls trace events + perf support |
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one thing i noticed is that we dont seem to be catching compat syscalls properly:
phoenix:~/linux/linux/tools/perf> perf stat -e syscalls:sys_enter_read -e syscalls:sys_enter_write -e syscalls:sys_enter_mmap ~/hackbench 10 Time: 0.236
Performance counter stats for '/home/mingo/hackbench 10':
0 syscalls:sys_enter_read 0 syscalls:sys_enter_write 0 syscalls:sys_enter_mmap
0.270062020 seconds time elapsed
phoenix:~/linux/linux/tools/perf> file ~/hackbench /home/mingo/hackbench: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.2.5, not stripped phoenix:~/linux/linux/tools/perf> uname -a Linux phoenix 2.6.31-rc5-tip #3 SMP Wed Aug 12 12:50:38 CEST 2009 x86_64 x86_64 x86_64 GNU/Linux
phoenix:~> perf stat -e syscalls:sys_enter_read -e syscalls:sys_enter_write -e syscalls:sys_enter_mmap ~/hackbench64 10 Running with 10*40 (== 400) tasks. Time: 0.199
Performance counter stats for '/home/mingo/hackbench64 10':
400402 syscalls:sys_enter_read 400403 syscalls:sys_enter_write 12 syscalls:sys_enter_mmap
0.247919263 seconds time elapsed
phoenix:~> file hackbench64 hackbench64: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped
Ingo
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