db4:~# /usr/bin/memtest 4096M 1 memtest v. 2.93.1 (C) 2000 Charles Cazabon Original v.1 (C) 1999 Simon Kirby /usr/bin/memtest: no units (B, K, M, G) on amount of memory to allocate. Copyright (C) 1999 Simon Kirby. Version 2 Copyright (C) 2000 Charles Cazabon. This is FREE SOFTWARE, licensed under the GNU General Public License version 2. See the included file COPYING for details. This software comes with absolutely NO WARRANTY. Usage: /usr/bin/memtest > [runs] [-l or --log] mem - memory to test (B=bytes, K=KiB, M=MiB, G=GiB) Byte values will be rounded down to nearest multiple of 64. e.g. 2G = 2 GiB 12M = 12 MiB Special value 'all' tests all available memory. runs - times to run tests (default: 2^32 - 1) -l or --log - log to file memtest.log db4:~# /usr/bin/memtest 4095M 1 memtest v. 2.93.1 (C) 2000 Charles Cazabon Original v.1 (C) 1999 Simon Kirby Current limits: RLIMIT_RSS 0xffffffffffffffff RLIMIT_VMEM 0xffffffffffffffff Raising limits... Allocated 4293918720 bytes...trying mlock...success. Starting tests... Testing 4293914624 bytes at 0x2ab074901000 (4080 bytes lost to page alignment). Run 1: Test 1: Stuck Address: Setting... Testing... 0 Received signal 2 (Interrupt) munlock'ed memory. 0 runs completed. 0 errors detected. Total runtime: 3 seconds. Exiting... db4:~# file /usr/bin/memtest /usr/bin/memtest: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.0, dynamically linked (uses shared libs), for GNU/Linux 2.6.0, stripped db4:~# ldd /usr/bin/memtest libc.so.6 => /lib/libc.so.6 (0x00002acee4506000) /lib64/ld-linux-x86-64.so.2 (0x00002acee43ee000)