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| -rw-r--r-- | doc/TODO | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -6,7 +6,7 @@ TODO list for PostgreSQL Bracketed items "[]" have more detail. Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) -Last updated: Mon Nov 8 10:32:30 EST 2004 +Last updated: Mon Nov 8 15:16:11 EST 2004 The most recent version of this document can be viewed at the PostgreSQL web site, http://www.PostgreSQL.org. @@ -644,7 +644,13 @@ Fsync Cache ===== * Allow free-behind capability for large sequential scans, perhaps using - posix_fadvise() [fadvise] + posix_fadvise() + + Posix_fadvise() can control both sequential/random file caching and + free-behind behavior, but it is unclear how the setting affects other + backends that also have the file open, and the feature is not supported + on all operating systems. + * Consider use of open/fcntl(O_DIRECT) to minimize OS caching * Cache last known per-tuple offsets to speed long tuple access |