Re^4: Can this code be optimized further?

Hmm.. Redefining makes a significant difference. That is odd, I didn't beleive that any of those functions where modifying the list. Which one is modifying the list?

C:\test>perl 429768.pl
            (warning: too few iterations for a reliable count)
              Rate   Grep Grep + Map   Hash   Map Router Trinary Origi
+nal Switch
Grep        9699/s     --       -36%   -39%  -42%   -44%    -47%     -
+52%   -65%
Grep + Map 15244/s    57%         --    -5%   -9%   -12%    -17%     -
+24%   -45%
Hash       16000/s    65%         5%     --   -5%    -8%    -12%     -
+20%   -43%
Map        16835/s    74%        10%     5%    --    -3%     -8%     -
+16%   -40%
Router     17301/s    78%        13%     8%    3%     --     -5%     -
+13%   -38%
Trinary    18282/s    88%        20%    14%    9%     6%      --      
+-9%   -34%
Original   20000/s   106%        31%    25%   19%    16%      9%      
+ --   -28%
Switch     27855/s   187%        83%    74%   65%    61%     52%      
+39%     --

C:\test>perl 429768.pl
              Rate   Grep Grep + Map    Map  Hash Router Trinary Origi
+nal Switch
Grep        9625/s     --       -38%   -41%  -41%   -45%    -47%     -
+53%   -66%
Grep + Map 15420/s    60%         --    -5%   -5%   -12%    -16%     -
+25%   -46%
Map        16194/s    68%         5%     --   -0%    -8%    -11%     -
+22%   -43%
Hash       16194/s    68%         5%     0%    --    -8%    -11%     -
+22%   -43%
Router     17544/s    82%        14%     8%    8%     --     -4%     -
+15%   -38%
Trinary    18282/s    90%        19%    13%   13%     4%      --     -
+11%   -36%
Original   20640/s   114%        34%    27%   27%    18%     13%      
+ --   -27%
Switch     28450/s   196%        84%    76%   76%    62%     56%      
+38%     --
[download]

___________
Eric Hodges

Comment on Re^4: Can this code be optimized further? Download Code

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Re^5: Can this code be optimized further? by RazorbladeBidet (Friar) on Feb 10, 2005 at 16:37 UTC
Not sure - I'll check though. Here's my results - I have what you have, but no Grep + Map, and Switch is now Substr Hash (more flexible), plus added the suggestion for split (slightly modified). Rate Eval Grep Map REHash SplHash Router REEq Or +ig SubHash Eval 5522/s -- -35% -52% -54% -55% -58% -58% -6 +2% -72% Grep 8432/s 53% -- -26% -30% -32% -35% -36% -4 +2% -58% Map 11468/s 108% 36% -- -5% -8% -12% -13% -2 +1% -42% REHash 12092/s 119% 43% 5% -- -3% -7% -8% -1 +6% -39% SplHash 12407/s 125% 47% 8% 3% -- -5% -6% -1 +4% -38% Router 13055/s 136% 55% 14% 8% 5% -- -1% -1 +0% -34% REEq 13210/s 139% 57% 15% 9% 6% 1% -- - +8% -34% Orig 14430/s 161% 71% 26% 19% 16% 11% 9% +-- -27% SubHash 19881/s 260% 136% 73% 64% 60% 52% 50% 3 +8% -- [download]	[reply] [d/l]

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Re^5: Can this code be optimized further?
by RazorbladeBidet (Friar) on Feb 10, 2005 at 16:37 UTC

           Rate   Eval   Grep    Map REHash SplHash Router   REEq   Or
+ig SubHash
Eval     5522/s     --   -35%   -52%   -54%    -55%   -58%   -58%   -6
+2%    -72%
Grep     8432/s    53%     --   -26%   -30%    -32%   -35%   -36%   -4
+2%    -58%
Map     11468/s   108%    36%     --    -5%     -8%   -12%   -13%   -2
+1%    -42%
REHash  12092/s   119%    43%     5%     --     -3%    -7%    -8%   -1
+6%    -39%
SplHash 12407/s   125%    47%     8%     3%      --    -5%    -6%   -1
+4%    -38%
Router  13055/s   136%    55%    14%     8%      5%     --    -1%   -1
+0%    -34%
REEq    13210/s   139%    57%    15%     9%      6%     1%     --    -
+8%    -34%
Orig    14430/s   161%    71%    26%    19%     16%    11%     9%     
+--    -27%
SubHash 19881/s   260%   136%    73%    64%     60%    52%    50%    3
+8%      --
[download]

[reply]
[d/l]