segmentation fault / threads

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has anyone developed any tricks for spawning lots of threads?

i'm using perl 5.8.5, making use of threads ... i'd like to spawn
several hundred at a time (i've written them to go off and perform
tasks which take a long time ... like perform nessus scans of every
active IP address on a subnet ... )

more often than not, the master thread crumps with a Segmentation
Fault, after spawning ... a few dozen.  rather unpredictable, actually
-- sometimes, the whole routine succeeds, spawning several hundred
threads and running them just fine.  sometimes, it crumps after
spawning a few ... sometimes after spawning a few dozen ... i don't
see a rhythym yet to the behavior.

i've found that inserting a delay ("sleep 10;" for example) between
spawning events generally increases the number of threads i can launch
before the Segementation Fault occurs.  has anyone developed any other
tricks?  i realize that threading is new in Perl ... but i find it so
useful, that i'm using it already, despite this wart, in a variety of

use strict;
use warnings;
use threads;
use threads::shared;
use Thread::Running qw(running);


stuart kendrick

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