Tag: performance

Monitoring SGE Performance using DTrace

Posted by chrisdag – October 4, 2006

Andreas just added a DTrace script to the V60s2_BRANCH release of the Grid Engine CVS codebase.

This means one can conduct performance tuning and troubleshooting of the qmaster/scheduler of a production SGE cluster, without compiling a special version of the binaries, and without restarting daemons!

Currently, Solaris 10 is the only OS with DTrace support (MacOSX and FreeBSD developers are porting DTrace to their platforms). Thus qmaster needs to be running on a Solaris 10 machine (SPARC, AMD64, or x86).

A wrapper shell script (monitor.sh) is also included to invoke the DTrace script from the command line with all the parameters needed.

% monitor.sh -help
monitor.sh [options]
options:
   -cell            use $SGE_CELL other than "default"
   -interval

See Andreas’ post for more.

Performance profiling information added to CVS

Posted by chrisdag – September 13, 2006

… Discovered via Stephan Grell’s blog

A new file has been added to the Grid Engine CVS codebase. The file, profiling.txt provides much needed insight into understanding the output generated by profiling mechanisms that have long been part of SGE but very much under documented. Profiling can be enabled or disabled by setting “profile=[0,1]” into the params line of the Grid Engine scheduler configuration (“qconf -msconf“).

When enabled, extra profiling information is logged to $SGE_ROOT/$SGE_CELL/spool/qmaster/schedd/messages.