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8 | 8 | <bodybgcolor="#FFFFFF"text="#000000"link="#FF0000"vlink="#A00000"alink="#0000FF"> |
9 | 9 | <h1><aname="section_1">PostgreSQL TODO List</a></h1> |
10 | 10 | <p>Current maintainer: Bruce Momjian (<ahref="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/> |
11 | | -Last updated:Fri Jun3 17:42:10 EDT 2005 |
| 11 | +Last updated:Sat Jun4 12:53:41 EDT 2005 |
12 | 12 | </p> |
13 | 13 | <p>The most recent version of this document can be viewed at<br/> |
14 | 14 | <ahref="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>. |
@@ -663,6 +663,9 @@ <h1><a name="section_13">Cache</a></h1> |
663 | 663 | </p> |
664 | 664 | </li><li>Consider use of open/fcntl(O_DIRECT) to minimize OS caching, |
665 | 665 | especially for WAL writes |
| 666 | +<p> O_DIRECT doesn't have the same media write guarantees as fsync, so it |
| 667 | + is in addition to the fsync method, not in place of it. |
| 668 | +</p> |
666 | 669 | </li><li>-<em>Cache last known per-tuple offsets to speed long tuple access</em> |
667 | 670 | </li><li>Speed up COUNT(*) |
668 | 671 | <p> We could use a fixed row count and a +/- count to follow MVCC |
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