Hard to tell from what we see here, but I can only guess that your bench has one or more errors, as cbxs just cannot be that fast (compared to c_xs). So if you want us to give you a better answer than any wild guess possible, you'll need to post your code and your data.

update: the high line numbers are because I forgot to close $fh at the end of each test. With the close added, here are the new compares:

$ perl5.8.4 test.pl
           Rate  c_pp  c_xs  cbxs  perl
c_pp 9.63e-02/s    --  -94%  -97%  -98%
c_xs     1.65/s 1616%    --  -42%  -57%
cbxs     2.84/s 2845%   72%    --  -27%
perl     3.88/s 3932%  135%   37%    --
$ perl5.20.1 test.pl
Use of uninitialized value in split at test.pl line 13, <$fh> line 200
+000.
Use of uninitialized value in split at test.pl line 13, <$fh> line 200
+000.
Use of uninitialized value in split at test.pl line 13, <$fh> line 200
+000.
Use of uninitialized value in split at test.pl line 13, <$fh> line 200
+000.
           Rate  c_pp  c_xs  cbxs  perl
c_pp 8.65e-02/s    --  -96%  -97%  -98%
c_xs     2.07/s 2295%    --  -27%  -53%
cbxs     2.84/s 3179%   37%    --  -35%
perl     4.40/s 4980%  112%   55%    --

[download]

Enjoy, Have FUN! H.Merijn

In reply to Re^4: Need help in reading csv files >1GB for converting into xlsx files in Solaris 10 - Perl v-5.8.4 by Tux
in thread Need help in reading csv files >1GB for converting into xlsx files in Solaris 10 - Perl v-5.8.4 by GT Learner

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