Re: [Texmacs-dev] Cache profiling of TeXmacs 1.0.3.9

[David MENTRE]

David MENTRE <address@hidden> writes:

> Following David advice, I have done some cache profiling of texmacs
> using OProfile.

I just realized that what I provided was not what David expected. He
wanted to know where CPU is spent. Using CPU_CLK_UNHALTED event gives a
more detailed event of that.

$ opreport event:CPU_CLK_UNHALTED,DATA_CACHE_MISSES image:*texmacs*
CPU: Athlon, speed 1826.62 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask 
of 0x00 (No unit mask) count 3000
Counted DATA_CACHE_MISSES events (Data cache misses) with a unit mask of 0x00 
(No unit mask) count 2000
CPU_CLK_UNHALT...|DATA_CACHE_MIS...|
  samples|      %|  samples|      %|
------------------------------------
  2504757 100.000      3073 100.000 texmacs.bin
        CPU_CLK_UNHALT...|DATA_CACHE_MIS...|
          samples|      %|  samples|      %|
        ------------------------------------
          2164475 86.4146      1795 58.4120 texmacs.bin
           201853  8.0588       903 29.3850 libguile.so.12.3.0
           112822  4.5043       149  4.8487 libc-2.3.2.so
            13456  0.5372       122  3.9701 ld-2.3.2.so
             9506  0.3795        99  3.2216 libX11.so.6.2
             2334  0.0932         5  0.1627 libpthread-0.60.so
              205  0.0082         0 0.0e+00 libstdc++.so.5.0.5
               45  0.0018         0 0.0e+00 libXcursor.so.1.0.2
               22 8.8e-04         0 0.0e+00 libXrender.so.1.2.2
               10 4.0e-04         0 0.0e+00 libdl-2.3.2.so
                8 3.2e-04         0 0.0e+00 libm-2.3.2.so
                5 2.0e-04         0 0.0e+00 libguile-ltdl.so.1.0.0
                4 1.6e-04         0 0.0e+00 libgcc_s.so.1
                4 1.6e-04         0 0.0e+00 libcrypt-2.3.2.so
                3 1.2e-04         0 0.0e+00 libfreetype.so.6.3.5
                2 8.0e-05         0 0.0e+00 libz.so.1.2.1
                1 4.0e-05         0 0.0e+00 xlcDef.so.2
                1 4.0e-05         0 0.0e+00 libltdl.so.3.1.0
                1 4.0e-05         0 0.0e+00 libqthreads.so.12.3.0

In that setting, guile account for 8% of CPU time but 29% of cache
misses.

Yours,
d.
-- 
 David Mentré <address@hidden>