Date: Mon, 01 Dec 2008 13:28:48 -0800 From: Yuri <yuri@rawbw.com> To: freebsd-questions@freebsd.org Subject: Why process memory starts so high up in virtual space with FreeBSD malloc? Message-ID: <49345710.9070403@rawbw.com>
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I am compiling the following program:
#include <stdlib.h>
main() { printf("0x%x\n", malloc(1)); }
in 32-bit 7.1-PRERELEASE and get 0x28201100 which is ~673MB of 4GB
address space or 16%.
When I run the same program with the google malloc (from
devel/google-perftools)
I get much lower value 0x80aa0e8 which is ~135MB of 4GB address space or
~3%.
Why FreeBSD memory allocator wastes such a high percentage of the memory
space?
Yuri
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