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| author | Jim Meyering <meyering@fb.com> | 2018-10-13 21:42:29 -0700 |
|---|---|---|
| committer | Jim Meyering <meyering@fb.com> | 2018-10-13 21:42:29 -0700 |
| commit | c5c3b2ef023f996d0a80c8380945804a7575680a (patch) | |
| tree | 1ee503bf12b4b7b074457d539ed09dda2729a5d0 | |
| parent | 41ac7a99647316b5ea77d70199282fa9bbd731d4 (diff) | |
| download | grep-c5c3b2ef023f996d0a80c8380945804a7575680a.tar.gz | |
doc: NEWS: mention performance improvements
* NEWS (Improvements): Mention them.
| -rw-r--r-- | NEWS | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -15,6 +15,14 @@ GNU grep NEWS -*- outline -*- ** Improvements + An over-30x performance improvement when many 'or'd expressions + share a common prefix, thanks to improvements in gnulib's dfa.c, + by Norihiro Tanaka. See gnulib commits v0.1-2110-ge648401be, + v0.1-2111-g4299106ce, v0.1-2117-g617a60974 + + An additional 3-23% speed-up when searching large files, via + increased initial buffer size. + grep now diagnoses stack overflow. Before grep-2.6, the included regexp code would detect it. Since 2.6, grep defaulted to using glibc's regexp, which lost that capability. |