Re: (shm WARNING) shm still deadlocks

From: Christoph Rohland (
Date: Mon Mar 20 2000 - 07:51:49 EST

Blu3Viper <> writes:

> Ok, try as try might, shm is still a nightmare in 2.3.99-pre2-5 with
> latest shm patch for deadlocks by C. Roland.
> The server runs fine until shm is mounted and Apache is started.
> Apache grabs one shm segment. I can almost instantly cause the
> deadlock situation by running a recursive wget. I can not however
> find exactly where the deadlock is happening because 'ps' can't read
> /proc and magic key T/P shows IPs either outside the kernel space or
> in cpu idle etc. dmesg is equally useless.

I tried to reproduce this on 2.3.99-pre3-2. I did run 60 recursive
wget over 100MBIT against my apache and no lockup at all. This is on
SMP and UP, under memory pressure and without.

Do you use any special apache modules?



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