grep branch, master, updated. v2.25-102-g0f31cd3

[Jim Meyering]

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http://git.savannah.gnu.org/cgit/grep.git/commit/?id=0f31cd341971a443714c9e7937e4e6e7e7a3dc21


commit 0f31cd341971a443714c9e7937e4e6e7e7a3dc21
Author: Jim Meyering <address@hidden>
Date:   Tue Sep 27 08:22:00 2016 -0700

    tests/long-pattern-perf: avoid false-failure due to cache speed
    
    * tests/long-pattern-perf: This test would fail semi-consistently
    on some systems, probably because the smaller regexp fit well
    within cache, yet the larger one did not.  In that case, there
    was a relative speed difference greater than 20x and the test
    would fail.  Quadruple the sizes, to make that less likely.
    Also, construct the 10x larger regexp directly from the smaller,
    rather than relying on seq with endpoints to induce that
    approximate size ratio.  Reported by Bruce Dubbs in
    https://lists.gnu.org/archive/html/grep-devel/2016-09/msg00013.html

diff --git a/tests/long-pattern-perf b/tests/long-pattern-perf
index 0548f34..0a02e6f 100755
--- a/tests/long-pattern-perf
+++ b/tests/long-pattern-perf
@@ -29,8 +29,9 @@ echo x > in || framework_failure_
 # We could use seq -s '' (avoiding the tr filter), but I
 # suspect some version of seq does not honor that option.
 # Note that we want 10x the byte count (not line count) in the larger file.
-seq 10000  20000 | tr -d '\012' > re     || framework_failure_
-seq 10000 100000 | tr -d '\012' > re-10x || framework_failure_
+seq 10000 50000 | tr -d '\012' > r || framework_failure_
+cat r r r r r r r r r r > re-10x || framework_failure_
+mv r re || framework_failure_
 
 base_ms=$(user_time_ 1 grep -f re in    ) || fail=1
 b10x_ms=$(user_time_ 1 grep -f re-10x in) || fail=1

-----------------------------------------------------------------------

Summary of changes:
 tests/long-pattern-perf |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)


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