change in NPTL thread displays with newest U2 kernel

[Ken Snider <ken snider datawire net>]

Greetings,

we run httpd with the "worker" mpm model, which results in the server running 
multithreaded. If we run one worker with 200 threads, say, NPTL results in 
only one entry showing up in PS. This has been the case since NPTL was 
introduced (RH9 I believe).

However, after updating our kernel/glibc to the most recently available 
RHEL3U2 releases (U3 tests are pending), we're now seeing that each thread 
once again has its' own PID, and a subsequent entry in the process list.

Did something change? Is there a way I can verify NPTL is still "active"? Have 
other users of multithreaded applications noticed this occur?

Thanks,

--
Ken Snider
Senior Systems Administrator
Datawire Communication Networks Inc.