Uri noted a couple days ago that Perl's stream I/O in <FH> calls is
terrible. This matches somewhat with my own experience, and whenever
I need to parse a file I either slurp it (if I'm certain it's within
certain bounds) or do something like while {sysread(LARGE_BUFSIZE)}.
Is anyone here perlgutsy enough to say *why* <FH> is so slow? Is it
just the split /(?=$/)/, or is there more going on there that I'm
missing?
If I bypass <FH>, am I gaining speed by not doing work I don't need to
do, or is it just one of the more atrocious legacy code paths?
-Conor
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