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Top Forums UNIX for Advanced & Expert Users How to measure g++ performance? Post 302434621 by Corona688 on Saturday 3rd of July 2010 10:32:04 PM
Old 07-03-2010
Just looking through man gcc I see:

Code:
...
       -Q  Makes the compiler print out each function name as it is compiled,
           and print some statistics about each pass when it finishes.

       -ftime-report
           Makes the compiler print some statistics about the time consumed by
           each pass when it finishes.

       -fmem-report
           Makes the compiler print some statistics about permanent memory
           allocation when it finishes.

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MALLOC_STATS(3) 					     Linux Programmer's Manual						   MALLOC_STATS(3)

NAME
malloc_stats - print memory allocation statistics SYNOPSIS
#include <malloc.h> void malloc_stats(void); DESCRIPTION
The malloc_stats() function prints (on standard error) statistics about memory allocated by malloc(3) and related functions. For each arena (allocation area), this function prints the total amount of memory allocated and the total number of bytes consumed by in-use alloca- tions. (These two values correspond to the arena and uordblks fields retrieved by mallinfo(3).) In addition, the function prints the sum of these two statistics for all arenas, and the maximum number of blocks and bytes that were ever simultaneously allocated using mmap(2). CONFORMING TO
This function is a GNU extension. NOTES
More detailed information about memory allocations in the main arena can be obtained using mallinfo(3). SEE ALSO
mmap(2), mallinfo(3), malloc(3), malloc_info(3), mallopt(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2012-05-06 MALLOC_STATS(3)
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