Hi Joseph,
I removed that page since I think it's obsolete. Fortunately, I haven't had to go recompile the Kernel or the Glibc library in years.That points to http://www.volano.com/linux.html which doesn't exist anymore. The wayback machine has a verion from Oct 31 2001 that doesn't say how to recompile the kernel to increase the limit. It does point me to /etc/security/limits.conf, but I don't have anything set there.(See also http://www.kegel.com/c10k.html )
Using the following options with Blackdown 1.3.1-02b-FCS on Red Hat Linux 8.0, I got 10,000 active socket connections (with 20,000 threads) on a 500-MHz Intel Pentium III with 384 megabytes of RAM:
/usr/local/j2sdk1.3.1/bin/java -green -Xmx256m -Xss64k ...
All I had to do was increase the per-process file descriptor limits for all the socket connections, by doing the following.
Add to /etc/pam.d/login:
session required /lib/security/pam_limits.so
Add to /etc/security/limits.conf:
* soft nofile 1024
* hard nofile 10240
Don't forget to add a "ulimit -n 10240" to your startup script.
John Neffenger
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