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README.md

PCRE JIT benchmark

Sample data and regular expressions are taken from Benchmark of Regex Libraries. The benchmark source code was also taken from there and modified to use pcre native APIs and the PCRE_STUDY_JIT_COMPILE option. See "man pcrejit"

Tested environment: CentOS 6.3 on VirtualBox 4.2.6, MacBook Pro 2012, Core i7 2.6GHz, 16GB 1600MHz DDR3 RAM, Apple SSD

Sample regular expressions:

  • URI (protocol://server/path): ([a-zA-Z][a-zA-Z0-9]*)://([^ /]+)(/[^ ]*)?
  • Email (name@server): ([^ @]+)@([^ @]+)
  • Date (month/day/year): ([0-9][0-9]?)/([0-9][0-9]?)/([0-9][0-9]([0-9][0-9])?)
  • URI|Email: ([a-zA-Z][a-zA-Z0-9]*)://([^ /]+)(/[^ ]*)?|([^ @]+)@([^ @]+)
URI Email Date URI | Email
PCRE 7.8 no jit 0.365s 0.218s 0.203s 7.477s
PCRE 8.32 no jit 0.348s 0.211s 0.197s 6.885s
-0.017s -0.007s -0.006s -0.592s
-4.7% -3.2% -3.0% -7.9%
PCRE 8.32 jit 0.200s 0.166s 0.175s 1.184s
-0.148s -0.045s -0.022s -5.701s
-42.5% -21.3% -11.2% -82.8%
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