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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 23:37:44 +0200 |
| commit | d5f53a8e26caf7931db6ad3939cd34d36ea54d91 (patch) | |
| tree | 6854c50fd5af3639ae2d88101c069fe84896778e /src/backend/utils/misc/postgresql.conf.sample | |
| parent | d8453ccfbfd6bb1782e71beb28acf4025a9a01ce (diff) | |
| download | postgresql-d5f53a8e26caf7931db6ad3939cd34d36ea54d91.tar.gz postgresql-d5f53a8e26caf7931db6ad3939cd34d36ea54d91.zip | |
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 5ee5e09ddf6..072dfb6f0d6 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 |