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Answer: Regex anchor speed ?: Is /^.*X/ faster than /X/ ?
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Q&A > regular expressions > Regex anchor speed ?: Is /^.*X/ faster than /X/ ? contributed by Fastolfe

I benchmarked it:

The string: "now is the time for all good monks to come to the aid of their perl". The results: 

Benchmark: timing 5000000 iterations of /.*perl/, /^.*perl/, /perl/...
  /.*perl/: 43 secs (41.48 usr  0.00 sys = 41.48 cpu)
 /^.*perl/: 38 secs (36.20 usr  0.00 sys = 36.20 cpu)
    /perl/: 29 secs (28.96 usr  0.00 sys = 28.96 cpu)

[download]
So yah, a standalone /match/ is going to be a bit faster.

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