diff options
| author | Thomas Munro <tmunro@postgresql.org> | 2022-07-20 13:50:57 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2022-07-20 13:55:52 +1200 |
| commit | 9430fb407bb64cc842e56fb5844265a9343dafba (patch) | |
| tree | a241a5a72a450498c746d8b2a0e8d8f25f741b4b /doc/src | |
| parent | b24b2be119c4cccceae838b62a3519a6d70b9476 (diff) | |
Add wal_sync_method=fdatasync for Windows.
Windows 10 gained support for flushing NTFS files with fdatasync()
semantics. The main advantage over open_datasync (in Windows API terms
FILE_FLAG_WRITE_THROUGH) is that the latter does not flush SATA drive
caches. The default setting is not changed, so users have to opt in to
this.
Discussion: https://postgr.es/m/CA%2BhUKGJZJVO%3DiX%2Beb-PXi2_XS9ZRqnn_4URh0NUQOwt6-_51xQ%40mail.gmail.com
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/wal.sgml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml index 4b6ef283c1c..01f7379ebb3 100644 --- a/doc/src/sgml/wal.sgml +++ b/doc/src/sgml/wal.sgml @@ -108,7 +108,8 @@ <literal>open_datasync</literal> (the default), write caching can be disabled by unchecking <literal>My Computer\Open\<replaceable>disk drive</replaceable>\Properties\Hardware\Properties\Policies\Enable write caching on the disk</literal>. Alternatively, set <varname>wal_sync_method</varname> to - <literal>fsync</literal> or <literal>fsync_writethrough</literal>, which prevent + <literal>fdatasync</literal> (NTFS only), <literal>fsync</literal> or + <literal>fsync_writethrough</literal>, which prevent write caching. </para> </listitem> |