[boost] [signls] Performance

From: Robert Allan Zeh (razeh_at_[hidden])
Date: 2006-09-30 08:35:53

I've done some more hacking at boost signals; it looks like inlining
parts of named_slot_map_iterator help.

Here are my timing results (using the Jody Hagins timing code) before:

===== 1000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1          1000     0.0031    0.0002
       10           100     0.0009    0.0001
       50            20     0.0012    0.0001
      100            10     0.0007    0.0001
      250             4     0.0007    0.0001
      500             2     0.0007    0.0001
     1000             1     0.0010    0.0002

===== 10000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1         10000     0.0317    0.0022
       10          1000     0.0097    0.0008
       50           200     0.0073    0.0006
      100           100     0.0070    0.0006
      250            40     0.0074    0.0006
      500            20     0.0068    0.0006
     1000            10     0.0114    0.0008
     5000             2     0.0114    0.0028
    10000             1     0.0118    0.0031

===== 100000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1        100000     0.3207    0.0219
       10         10000     0.0934    0.0077
       50          2000     0.0714    0.0065
      100          1000     0.0685    0.0065
      250           400     0.0677    0.0071
      500           200     0.0752    0.0062
     1000           100     0.1548    0.0088
     5000            20     0.1962    0.0457
    10000            10     0.1849    0.0451
    50000             2     0.1554    0.0424
   100000             1     0.1166    0.0297

===== 1000000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1       1000000     3.2411    0.2233
       10        100000     1.0952    0.1057
       50         20000     0.9700    0.0843
      100         10000     0.8360    0.1601
      250          4000     0.6917    0.0638
      500          2000     0.7075    0.0641
     1000          1000     1.1954    0.0746
     5000           200     1.1925    0.2886
    10000           100     1.1888    0.3132
    50000            20     1.2021    0.3007
   100000            10     1.1987    0.3113
   500000             2     1.2452    0.3346

And here are the results afterwards:

===== 1000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1          1000     0.0018    0.0002
       10           100     0.0006    0.0001
       50            20     0.0005    0.0001
      100            10     0.0006    0.0001
      250             4     0.0004    0.0001
      500             2     0.0004    0.0001
     1000             1     0.0008    0.0002

===== 10000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1         10000     0.0219    0.0023
       10          1000     0.0060    0.0008
       50           200     0.0040    0.0006
      100           100     0.0045    0.0006
      250            40     0.0045    0.0006
      500            20     0.0061    0.0006
     1000            10     0.0081    0.0012
     5000             2     0.0094    0.0029
    10000             1     0.0093    0.0028

===== 100000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1        100000     0.2100    0.0214
       10         10000     0.0608    0.0078
       50          2000     0.0460    0.0080
      100          1000     0.0439    0.0068
      250           400     0.0424    0.0077
      500           200     0.0459    0.0064
     1000           100     0.0920    0.0079
     5000            20     0.0921    0.0299
    10000            10     0.0947    0.0303
    50000             2     0.0946    0.0316
   100000             1     0.0938    0.0307

===== 1000000 Total Calls =====
Num Slots    Calls/Slot    Boost     Lite
---------    ----------    -------   -------
        1       1000000     2.0642    0.2303
       10        100000     0.6071    0.0828
       50         20000     0.4717    0.0667
      100         10000     0.4610    0.0656
      250          4000     0.4508    0.0645
      500          2000     0.4464    0.0661
     1000          1000     0.9111    0.0764
     5000           200     0.9358    0.3028
    10000           100     0.9399    0.2963
    50000            20     0.9330    0.3003
   100000            10     0.9357    0.3001
   500000             2     0.9455    0.3014