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| author | Tomas Vondra <tomas.vondra@postgresql.org> | 2019-08-04 20:29:00 +0200 |
|---|---|---|
| committer | Tomas Vondra <tomas.vondra@postgresql.org> | 2019-08-04 23:38:27 +0200 |
| commit | 75506195da81d75597a4025b72f8367e6c45f60d (patch) | |
| tree | 55d6df111735a0710ce13d2b831deb3f1e83d728 /src/backend/utils/misc/postgresql.conf.sample | |
| parent | 4f9ed8f3c5ef0034c98dd34549f85d8c72aab9ad (diff) | |
Revert "Add log_statement_sample_rate parameter"
This reverts commit 88bdbd3f746049834ae3cc972e6e650586ec3c9d.
As committed, statement sampling used the existing duration threshold
(log_min_duration_statement) when decide which statements to sample.
The issue is that even the longest statements are subject to sampling,
and so may not end up logged. An improvement was proposed, introducing
a second duration threshold, but it would not be backwards compatible.
So we've decided to revert this feature - the separate threshold should
be part of the feature itself.
Discussion: https://postgr.es/m/CAFj8pRDS8tQ3Wviw9%3DAvODyUciPSrGeMhJi_WPE%2BEB8%2B4gLL-Q%40mail.gmail.com
Diffstat (limited to 'src/backend/utils/misc/postgresql.conf.sample')
| -rw-r--r-- | src/backend/utils/misc/postgresql.conf.sample | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample index cfad86c02a0..65a6da18b35 100644 --- a/src/backend/utils/misc/postgresql.conf.sample +++ b/src/backend/utils/misc/postgresql.conf.sample @@ -488,14 +488,10 @@ # fatal # panic (effectively off) -#log_min_duration_statement = -1 # logs statements and their durations - # according to log_statement_sample_rate. -1 is disabled, - # 0 logs all statements, > 0 logs only statements running - # at least this number of milliseconds. - -#log_statement_sample_rate = 1.0 # Fraction of logged statements exceeding - # log_min_duration_statement to be logged. - # 1.0 logs all such statements, 0.0 never logs. +#log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements + # and their durations, > 0 logs only + # statements running at least this number + # of milliseconds #log_transaction_sample_rate = 0.0 # Fraction of transactions whose statements # are logged regardless of their duration. 1.0 logs all |