[m-dev.] Please help... once more

Fergus Henderson fjh at cs.mu.OZ.AU
Tue Oct 17 17:40:47 AEDT 2000


On 16-Oct-2000, Erwan Jahier <Erwan.Jahier at irisa.fr> wrote:
> Now the timings are (again for queens-11 and a very simple monitor):
> 
> if
> a: is the code to get the value of event_info.MR_max_mr_num 
> b: is the call MR_copy_saved_regs_to_regs() and its twin
> c: is the call MR_COLLECT_filter and is the check to see if stop_collecting 
> is set to TRUE
> 
> a+b+c: 216 seconds (user+sys)
> a+b: 56 s
> {}: 17 s

My guess is that as discussed earlier probably most of the time is in
MR_call_engine() and in particular in setjmp() and longjmp().

> ps: wrapping the call to (*filter_ptr)() in MR_COLLECT_filter() by the macro
> MR_TRACE_CALL_MERCURY() was not necessary.

Why not?  Do you just mean that by coincidence it happens to work if
you remove it?

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
WWW: <http://www.cs.mu.oz.au/~fjh>  |  of excellence is a lethal habit"
PGP: finger fjh at 128.250.37.3        |     -- the last words of T. S. Garp.
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