Messages in this thread | | | From | "Heusden, Folkert van" <> | Subject | random PIDs | Date | Wed, 4 Apr 2001 16:17:45 +0200 |
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Finished & tested my random PID kernel/fork.c:get_pid() replacement. This one keeps track of the last N (default is 64) pids who have exited. These are then not used. So, one cannot have more then 32767 - (64 + 1 (init) + 1 (idle)) = 32761 processes :o)
I know that it was all implemented before, but this patch is very small and I couldn't stand the idea the fact that my last announcement was for a patch which didn't work at all :o)
One can find it at: http://www.vanheusden.com/Linux/kernel_patches.php3 (or: http://www.vanheusden.com/Linux/fp-2.2.19.patch.gz but then you miss the list of other patches ;-]) Patch is against kernel 2.2.19.
I did not do any performance tests, but the machine I tested it on (300MHz dec alpha) felt (felt?) as smooth as before :o)
Folkert van Heusden
[ www.vanheusden.com ]
p.s. the patch mentioned above also raises the number of pool-words from 128 to 2048, adds code to do_exit which tells you if the idle task is killed (as in 2.4.x), and replaces net/core/utils.c:net_[s]random() with something which uses get_random_bytes(). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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