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| author | Evan Broder <evan@stripe.com> | 2016-07-05 21:02:49 -0700 |
|---|---|---|
| committer | David Storch <david.storch@10gen.com> | 2017-01-26 18:35:29 -0500 |
| commit | 94b37aac060bcc8b10c3eb41f178d84008136f9c (patch) | |
| tree | f98c9f60273345ea880af48ab14ad7ac8ef167cd /src/mongo/db/server_options.h | |
| parent | 249eaae3e1b78ed5c4b6b7425145a23dc658fd75 (diff) | |
| download | mongo-94b37aac060bcc8b10c3eb41f178d84008136f9c.tar.gz | |
SERVER-4786 Allow specifying sample rate of slow queries
Adds a sampleRate parameter to the profile command, a value
on the interval [0, 1] which indicates which fraction of
operations should be randomly sampled for profiling and
logging. This allows users to reduce their slowms threshold
or increase their profiling level with less performance
impact on the system.
Closes #1099
Signed-off-by: David Storch <david.storch@10gen.com>
Diffstat (limited to 'src/mongo/db/server_options.h')
| -rw-r--r-- | src/mongo/db/server_options.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mongo/db/server_options.h b/src/mongo/db/server_options.h index 13dc2705150..95bd873740c 100644 --- a/src/mongo/db/server_options.h +++ b/src/mongo/db/server_options.h @@ -65,6 +65,7 @@ struct ServerGlobalParams { int defaultProfile = 0; // --profile int slowMS = 100; // --time in ms that is "slow" + double sampleRate = 1.0; // --samplerate rate at which to sample slow queries int defaultLocalThresholdMillis = 15; // --localThreshold in ms to consider a node local bool moveParanoia = false; // for move chunk paranoia |