On Fri, Jul 30, 2010 at 04:04:42PM +0200, Frederic Weisbecker wrote: > On Fri, Jul 30, 2010 at 02:36:55PM +0100, Mel Gorman wrote: > > This is a roll-up of patches currently in mmotm related to stack reduction and > > tracing reclaim. It is based on 2.6.35-rc6 and included for the convenience > > of testing. > > > > No signed off required. > > --- > > .../trace/postprocess/trace-vmscan-postprocess.pl | 654 ++++++++++++++++++++ > > I have the feeling you've made an ad-hoc post processing script that seems > to rewrite all the format parsing, debugfs, stream handling, etc... we > have that in perf tools already. > It's an hoc adaption of trace-pagealloc-postprocess.pl which was developed before the perf scripting report. It's a bit klunky. > May be you weren't aware of what we have in perf in terms of scripting support. > I'm aware, I just haven't gotten around to adapting what the script does to the perf scripting support. The existance of the script I have means people can reproduce my results without having to wait for me to rewrite the post-processing scripts for perf. > First, launch perf list and spot the events you're interested in, let's > say you're interested in irqs: > > $ perf list > [...] > irq:irq_handler_entry [Tracepoint event] > irq:irq_handler_exit [Tracepoint event] > irq:softirq_entry [Tracepoint event] > irq:softirq_exit [Tracepoint event] > [...] > > Now do a trace record: > > # perf record -e irq:irq_handler_entry -e irq:irq_handler_exit -e irq:softirq_entry -e irq:softirq_exit cmd > > or more simple: > > # perf record -e irq:* cmd > > You can use -a instead of cmd for wide tracing. > > Now generate a perf parsing script on top of these traces: > > # perf trace -g perl > generated Perl script: perf-trace.pl > > Fill up the trace handlers inside perf-trace.pl and just run it: > > # perf trace -s perf-trace.pl > > Once ready, you can place your script in the script directory. > Ultimately, the post-processing scripts should be adapted to perf but it could be a while before I get around to it. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>