Messages in this thread | | | Date | Thu, 19 Mar 2009 20:26:10 +0100 | From | Peter Zijlstra <> | Subject | [PATCH 00/10] tracepoint perf counter events and new ABI |
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These patches change the event tracer to provide id files:
[root@opteron ~]# for i in /debug/tracing/events/irq/*/id; do echo `cat $i` - $i; done 28 - /debug/tracing/events/irq/irq_handler_entry/id 29 - /debug/tracing/events/irq/irq_handler_exit/id 27 - /debug/tracing/events/irq/softirq_entry/id 26 - /debug/tracing/events/irq/softirq_exit/id
These can then be used in profiling as:
[root@opteron linux-2.6]# ~/perfstat -e 2:28 make O=native-build/ -j4 lib ...
Performance counter stats for 'make':
18280.657602 task clock ticks (msecs)
465 tp: 28 (events)
Wall-clock time elapsed: 11265.199196 msecs
Showing that we had 465 irq_handler_entry events during that workload.
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