Brooks R. Robinson wrote:
Greetings, I am moving a server from Woody to Sarge that has some custom software on it for a time clock system that interacts with Postgresql. I am starting with a fresh hardware and a recent install of Sarge. This time clock software is threaded so that each time clock interacts with the same daemon, but it splits off a thread to service each clock. Under Woody, I see each thread as a separate process under top, but I'm not seeing this same thing under Sarge. Is this normal, or do I have more problems that I realize?
System under Woody: debian:~$ uname -a Linux debian.chanceind.com 2.4.26 #1 Fri Jun 18 10:00:33 CDT 2004 i686 unknown debian:~$ gcc -v Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.4/specs gcc version 2.95.4 20011002 (Debian prerelease)
System under Sarge: debian2:~$ uname -a Linux debian2 2.6.11.7 #1 SMP Fri Apr 29 14:32:09 CDT 2005 i686 GNU/Linux debian2:~$ gcc -v Reading specs from /usr/lib/gcc-lib/i486-linux/3.3.5/specs Configured with: ../src/configure -v --enable-languages=c,c++,java,f77,pascal,objc,ada,treela ng --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gx x-include-dir=/usr/include/c++/3.3 --enable-shared --enable-__cxa_atexit --w ith-system-zlib --enable-nls --without-included-gettext --enable-clocale=gnu --enable-debug --enable-java-gc=boehm --enable-java-awt=xlib --enable-objc- gc i486-linux Thread model: posix gcc version 3.3.5 (Debian 1:3.3.5-12)
Any help would be appreciated.
Thanks,
Brooks
Hi,
This is in fact correct, it has got to do with the new threading model called NPTL (Native POSIX Thread Library) that is now used if kernel 2.6 is present. Under this new model threads are classed as Lightweight Processes (LWP) and ps only shows them if you use it with the -L or H (i.e. ps aux -L or ps auxH).
See also: http://en.wikipedia.org/wiki/NPTL
HTH, Chris
-- Chris Boot [EMAIL PROTECTED] http://www.bootc.net/
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