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| author | Bruce Momjian <bruce@momjian.us> | 2020-05-21 20:28:38 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2020-05-21 20:28:38 -0400 |
| commit | a87209ce7e1270b3a48e107c981a7035196d662b (patch) | |
| tree | 5570a5887c4032b638f6180a715981e6b18c23e6 | |
| parent | 388d7f8c62b407005f56b6262a678d9fb96ea18c (diff) | |
| download | postgresql-a87209ce7e1270b3a48e107c981a7035196d662b.tar.gz postgresql-a87209ce7e1270b3a48e107c981a7035196d662b.zip | |
doc: suggest 1.1 as a random_page_cost value for SSDs
Reported-by: yigong hu
Discussion: https://postgr.es/m/CAOxFffcourucFqSk+tZA13ErS3XRYkDy6EeaPff4AvHGiEEuug@mail.gmail.com
Backpatch-through: 9.5
| -rw-r--r-- | doc/src/sgml/config.sgml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index e5041aca7c6..f279fe5cada 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -4761,7 +4761,8 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class=" the database is smaller than the total server memory, decreasing random_page_cost can be appropriate. Storage that has a low random read cost relative to sequential, e.g. solid-state drives, might - also be better modeled with a lower value for random_page_cost. + also be better modeled with a lower value for random_page_cost, + e.g., <literal>1.1</literal>. </para> <tip> |