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-rw-r--r--src/backend/utils/misc/postgresql.conf.sample3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index f43086f6d06..9e39baf4668 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -575,6 +575,9 @@
#vacuum_freeze_table_age = 150000000
#vacuum_multixact_freeze_min_age = 5000000
#vacuum_multixact_freeze_table_age = 150000000
+#vacuum_cleanup_index_scale_factor = 0.1 # fraction of total number of tuples
+ # before index cleanup, 0 always performs
+ # index cleanup
#bytea_output = 'hex' # hex, escape
#xmlbinary = 'base64'
#xmloption = 'content'