stptracer-20060828 has released.

Li Guanglei guanglei@cn.ibm.com
Thu Aug 31 08:56:00 GMT 2006


Li Guanglei wrote:

> [...]
> Here you can see that gBTI is around 23% faster than _stp_printf(). In
> fact a long time ago I used oprofile to find out where _stp_printf()
> cost cpu time, and it showed that a lot time is spent on _stp_vsnprintf().
> 

Attached is the profiling data I got a minute ago by running
the tests I mentioned in my mail. I only kept the leading few lines of 
the generated profiling file.

oprofile.all is generated by:
   opreport -p STP_MODULE_DIR -lg  > oprofile.all
oprofile.kernel is generated by:
   opreport /boot/vmlinux-`uname -r`.debug -lg  > oprofile.kernel

- Guanglei


-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: oprofile.kernel
URL: <http://sourceware.org/pipermail/systemtap/attachments/20060831/68f59dff/attachment.ksh>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: oprofile.all
URL: <http://sourceware.org/pipermail/systemtap/attachments/20060831/68f59dff/attachment-0001.ksh>


More information about the Systemtap mailing list