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-rw-r--r--doc/src/sgml/config.sgml5
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 740ff5d5044..8683f0bdf53 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -8639,8 +8639,9 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
<listitem>
<para>
Specifies the number of backend slots to reserve for autovacuum worker
- processes. The default is 16. This parameter can only be set at server
- start.
+ processes. The default is typically 16 slots, but might be less if
+ your kernel settings will not support it (as determined during initdb).
+ This parameter can only be set at server start.
</para>
<para>
When changing this value, consider also adjusting