Time profiling

From: Andrew Conway (arc@sequence.Stanford.EDU)
Date: Wed Jun 25 1997 - 03:38:36 MET DST


Date: Tue, 24 Jun 1997 18:38:36 -0700 (PDT)
From: Andrew Conway <arc@sequence.Stanford.EDU>
Message-Id: <199706250138.SAA18764@vegemite.Stanford.EDU>
To: caml-list@pauillac.inria.fr
Subject: Time profiling

[ Mauvais franc,ais au fin ]

Dear O'Caml-group,

I tried doing a time profile of a program in ocaml 1.05, and got for the
first few lines:

%time seconds cum % cum sec procedure (file)

 28.5 11.8369 28.5 11.84 proc_at_0x120091f50 (<stripped>)
 18.5 7.6943 47.1 19.53 proc_at_0x1200922b0 (<stripped>)
 15.6 6.4551 62.6 25.99 proc_at_0x12008a5d0 (<stripped>)
 10.7 4.4219 73.3 30.41 proc_at_0x12008c220 (<stripped>)
  6.3 2.6064 79.6 33.01 List_mem_143 (<stripped>)
  5.5 2.2637 85.0 35.28 equal (<stripped>)
  2.9 1.2031 87.9 36.48 Matrix_transpose_65 (<stripped>)
  2.2 0.9023 90.1 37.38 fl_merge_block (<stripped>)

Now, what does proc_at_0x120091f50 mean?

Also, with object methods, the time profile is rather unuseful...the names
seem to not contain an easy way of finding the function in question. I
finally worked it out by compiling to source code, and reverse engineering
that, which is very time consuming. This was in 1.02; I haven't tried it
recently.

Thanks,

Andrew.

-----------------------

Cher groupe de ocaml,

J'ai essaye' d'utiliser "prof" avec caml 1.05, et j'ai obtenu

%time seconds cum % cum sec procedure (file)

 28.5 11.8369 28.5 11.84 proc_at_0x120091f50 (<stripped>)
 18.5 7.6943 47.1 19.53 proc_at_0x1200922b0 (<stripped>)
 15.6 6.4551 62.6 25.99 proc_at_0x12008a5d0 (<stripped>)
 10.7 4.4219 73.3 30.41 proc_at_0x12008c220 (<stripped>)
  6.3 2.6064 79.6 33.01 List_mem_143 (<stripped>)
  5.5 2.2637 85.0 35.28 equal (<stripped>)
  2.9 1.2031 87.9 36.48 Matrix_transpose_65 (<stripped>)
  2.2 0.9023 90.1 37.38 fl_merge_block (<stripped>)
                ...

Que veut dire proc_at_0x120091f50?

Aussi, j'ai eu des proble`mes avec des methods en ocaml. Les noms (en prof)
ne contient pas les noms (en ocaml). C'etait en utilisant ocaml 1.02

Merci,

Andrew.

,



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