Johnathan Bailes kirjoitti viestissään (lähetysaika lauantai, 19. maaliskuuta 2005 17:12): > On Sat, 19 Mar 2005 08:07:42 -0500, Jim Buchanan <jbuchana@xxxxxxxxx> wrote: > > I just tried a fork bomb on a reaonably updated fc3 box. > > Locked it up tight, I had to use the power switch. > > > > The default ulimit for user processes was set at 4095. > > > > ulimit -a > core file size (blocks, -c) 0 > data seg size (kbytes, -d) unlimited > file size (blocks, -f) unlimited > pending signals (-i) 1024 > max locked memory (kbytes, -l) 32 > max memory size (kbytes, -m) unlimited > open files (-n) 1024 > pipe size (512 bytes, -p) 8 > POSIX message queues (bytes, -q) 819200 > stack size (kbytes, -s) 10240 > cpu time (seconds, -t) unlimited > max user processes (-u) 2045 > virtual memory (kbytes, -v) unlimited > file locks (-x) unlimited > > Weird my fairly stock Fedora Core 3 has a ulimit of 2045? My machine has the limit set at 8191. Looks like it's determined dynamically, maybe from RAM size? I have 512MB. > Is that enough to grind a box to its knees? Fork bomb jammed my machine with the default limit, with ulimit -u 1024 there were no problems. -- Markku Kolkka markku.kolkka@xxxxxx
