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Created September 23, 2015 13:10
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counter2 module jit.p vs traceprof
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readme.txt
$ sudo ./snabb snsh -jdump=+rs,x -jp=vi1 counter2.lua
100% TRACE 3 ->loop counter2.lua:5
$ sudo ./snabb snsh -jdump=+rs,x -jtprof counter2.lua
traceprof report (recorded 10567/10567 samples):
62% TRACE 3 counter2.lua:5
26% TRACE 4 (3/5) counter2.lua:9
10% TRACE 3:LOOP counter2.lua:5
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lukego commented Sep 23, 2015

Here is an updated version that includes cross-trace linkage in traceprof too:

traceprof report (recorded 10572/10572 samples):
 63% TRACE   3               ->loop    counter2.lua:5
 25% TRACE   4      (3/5)    ->3       counter2.lua:9
 11% TRACE   3:LOOP          ->loop    counter2.lua:5

I am really happy with this output. I think it clearly shows that time is being burned in rerunning the initial (non-loop) part of trace 3 due to repeated entries from trace 4.

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