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Tuning malloc.c

From: Steve Munroe <sjmunroe at us dot ibm dot com>
To: libc-hacker at sources dot redhat dot com
Date: Fri, 12 Sep 2003 16:25:35 -0500
Subject: Tuning malloc.c

For 64-bit systems it would be nice to adjust some of the malloc tunning 
parameters. For example:

MMAP_AS_MORECORE_SIZE
DEFAULT_TRIM_THRESHOLD
DEFAULT_MMAP_THRESHOLD
HEAP_MIN_SIZE
HEAP_MAX_SIZE

For a 64-bit machine these values should be larger to avoid excessive 
mmap/unmap activity for large transient mallocs. 

Unfortunately there seems to be no clear, arch specific, mechanism for 
overriding the defaults in malloc.c. Should there be a mallocconf.h?

Follow-Ups:
- Re: Tuning malloc.c
  - From: Roland McGrath

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