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Update --help message in db_bench.

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Summary:
Remove --help entry for readhot.

Update read_random_exp_range flag description: The distribution is num *
exp(-r), not num * exp(r).

Test Plan: Run ./db_bench --help

Reviewers: sdong, igor

Reviewed By: igor

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D42303
This commit is contained in:
Aaron Feldman 2015-07-15 10:21:09 -07:00
parent 6b2d44b2ff
commit 2c8de0ecae
1 changed files with 1 additions and 3 deletions
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4
db/db_bench.cc
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@ -130,8 +130,6 @@ DEFINE_string(benchmarks,
"\treadreverse -- read N times in reverse order\n"
"\treadrandom -- read N times in random order\n"
"\treadmissing -- read N missing keys in random order\n"
"\treadhot -- read N times in random order from 1% section "
"of DB\n"
"\treadwhilewriting -- 1 writer, N threads doing random "
"reads\n"
"\treadwhilemerging -- 1 merger, N threads doing random "
@ -232,7 +230,7 @@ DEFINE_double(compression_ratio, 0.5, "Arrange to generate values that shrink"
DEFINE_double(read_random_exp_range, 0.0,
"Read random's key will be generated using distribution of "
"num * exp(r) where r is uniform number from 0 to this value. "
"num * exp(-r) where r is uniform number from 0 to this value. "
"The larger the number is, the more skewed the reads are. "
"Only used in readrandom and multireadrandom benchmarks.");