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Re: profile system API performance
- From: Lin George <george4academic at yahoo dot com>
- To: Nick Clifton <nickc at redhat dot com>
- Cc: binutils at sourceware dot org
- Date: Thu, 15 Feb 2007 06:51:52 -0800 (PST)
- Subject: Re: profile system API performance
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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