Messages in this thread |  | | Date | Sat, 9 Dec 2000 12:19:44 +0100 (CET) | From | Mike Galbraith <> | Subject | HowTo: 2.4.0-test12 repeatable OOM-death |
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Hi,
I found a way to reliably OOM test12-pre7 to death. (not my goal;)
1. Start a make -jN bzImage where N is large enough to swap ~hard. 2. Let it ramp up such that oh, say 50mb is in swap and then ^C.
... repeat a few times to verify that all jobs terminate properly, and that you can do this until blue in the face. (don't be suprised if you start seeing occasional SIGSEGV [yes, even on UP boxen] after doing this for a while, but what comes next is nasty)
3. swapoff -a; swapon -a 4. goto 1
You should now see is the box go swap NUTS, and run all the way into OOM as soon as you interrupt the build. I just finished repeating this in virgin test12-pre7 enough times to call it fully repeatable.
If you SysRq-E before it kills bash and leaves zillion zombies lying around, it'll seem to recover. You'll likely decide to reboot pretty shortly thereafter ;-)
-Mike
-- Versions installed: (if some fields are empty or look -- unusual then possibly you have very old versions) Linux el-kaboom 2.4.0-test12 #1 Sat Dec 9 08:29:23 CET 2000 i686 unknown Kernel modules 2.3.21 Gnu C gcc-2.95.2 Binutils 2.10.1.0.2 Linux C Library > libc.2.2 Dynamic linker ldd (GNU libc) 2.2 Procps 2.0.6 Mount 2.10o Net-tools 1.53 Kbd 0.99 Sh-utils 2.0 Modules Loaded nls_iso8859-1 nls_cp437 vfat fat
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