Re: change in NPTL thread displays with newest U2 kernel

[Milan Keršláger <milan kerslager pslib cz>]

On Thu, Sep 02, 2004 at 02:25:44PM -0400, Ken Snider wrote:
> 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).

Try to use -m switch: ps xamlOT

> 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?

The threads has dot just before their <PID> under /proc. Try:

ls -a /proc

-- 
                        Milan Kerslager
                        E-mail: milan kerslager pslib cz
                        WWW:    http://www.pslib.cz/ke/