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Date: Sun, 8 Oct 1995 11:44:21 -0700
From: Poul-Henning Kamp <phk>
Message-Id: <199510081844.LAA09007@freefall.freebsd.org>
To: CVS-commiters, cvs-lib
Subject: cvs commit: src/lib/libc/stdlib malloc.3 malloc.c
Sender: owner-cvs-lib@FreeBSD.org
Precedence: bulk

phk         95/10/08 11:44:21

  Modified:    lib/libc/stdlib  malloc.3 malloc.c
  Log:
  phkmalloc/2
  "zero' and 'junk' options to help find and diagnose malloc abuse.
  EXTRA_SANITY defaults "junk" to on.
  Don't dump the internal state, unless EXTRA_SANITY.
  General code cleanup.
  Error messages cleaned up a bit, more checking earlier.
  EXTRA_SANITY is default at this time (just in case).
  Performance (without EXTRA_SANITY) is better, beats gnumalloc in
  both time & space most of the time:
  
  	# In-memory test.
  	./malloc 50000000 2000 8192
  	159.2u 1.5s 2:41.85 99.3% 5+7742k 0+0io 0pf+0w
  	./gnumalloc 50000000 2000 8192
  	272.6u 0.4s 4:35.01 99.3% 5+8533k 0+0io 0pf+0w
  
  	# Swap-space test.
  	./malloc 500000 14000 8192
  	6.5u 4.1s 4:08.87 4.3% 5+49209k 0+0io 9772pf+0w
  	./gnumalloc 500000 14000 8192
  	16.2u 14.5s 15:36.14 3.2% 5+54100k 0+0io 47651pf+0w
  
  	# Small items test.
  	./malloc 20000000 20000 2048
  	67.0u 0.3s 1:07.83 99.2% 5+18199k 0+0io 4pf+0w
  	./gnumalloc 20000000 20000 2048
  	66.2u 0.3s 1:07.03 99.3% 5+18107k 0+0io 0pf+0w
  
  SANITY is not an option anymore. (!!)