profile system API performance

[Lin George]

Nike, I find rebuild libc is so complicated, needs to refer to some Kernel header files. Do you have any documents to refer for dummy -- like me? :-)

BTW: are there any libc which is already enabled with gprof functions (with -pg profile capability) to steal?


regards,
George

----- Original Message ----
From: Nick Clifton <nickc@redhat.com>
To: Lin George <george4academic@yahoo.com>
Cc: binutils@sourceware.org
Sent: Wednesday, February 14, 2007 5:24:49 PM
Subject: Re: profile system API performance


Hi Lin,

> I find that when I profile the performance of my application, gprof only reports the time elapsed on the functions I developed by myself, but the system API (like memset, malloc, etc) is not calculated.

You need a version of the C library (glibc) compiled with profiling enabled.

> I am wondering how to enable it. I am using Linux.

If a profile-enabled glibc is not provided by the version of Linux that 
you are using then you will have to download the sources and build it 
yourself.

Cheers
   Nick


 
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