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a95e51962d
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65 Commits

Author SHA1 Message Date
Peter Eisentraut
a95e51962d Update broken and permanently moved links 2010-03-17 17:12:31 +00:00
Bruce Momjian
9295eea839 Document ATAPI FLUSH CACHE EXT. 2010-02-27 20:16:17 +00:00
Bruce Momjian
adfb444581 Document ATAPI drive flush command, and mention SSD drives. 2010-02-27 01:39:46 +00:00
Bruce Momjian
de9ec65431 Document that many solid-state drives have volatile write-back caches. 2010-02-20 18:28:37 +00:00
Bruce Momjian
bf62b1a078 Proofreading improvements for the Administration documentation book. 2010-02-03 17:25:06 +00:00
Bruce Momjian
cb98f61538 fsync test tools 
Add link to exteran fsync testing script and our fsync test tool.
 2009-11-28 16:21:31 +00:00
Bruce Momjian
78f58f0f70 Improve documentation about how checkpoint spreads I/O activity. 2009-04-09 16:20:50 +00:00
Bruce Momjian
520c41b526 Add documentation mention that full page writes have to be enabled for 
full pages to be restored during recovery.

Per private report from Michael Renner
 2009-01-15 00:34:25 +00:00
Bruce Momjian
382af3a954 Add "not" to wal journaling text. 2008-12-18 22:34:21 +00:00
Bruce Momjian
fa6116a3da Clarify documentation that journaling is not required for WAL or data files. 2008-12-18 22:21:16 +00:00
Bruce Momjian
253fa736b9 Update journaling performance docs based on comments by Michael Renner. 2008-12-10 11:05:49 +00:00
Bruce Momjian
31076c8beb Document that non-data journaling is a recommended mount option. 2008-12-06 21:34:27 +00:00
Tom Lane
cf9f6c8d8e Extend yesterday's patch making BLCKSZ and RELSEG_SIZE configurable to also 
let XLOG_BLCKSZ and XLOG_SEG_SIZE be set via configure.  Per a proposal by
Mark Wong, though I thought it better to call the switches after "wal" rather
than "xlog".
 2008-05-02 19:52:37 +00:00
Bruce Momjian
a84b605a8e Document how to control the disk write cache on Solaris. 
Zdenek Kotala
 2007-12-29 17:55:07 +00:00
Bruce Momjian
665028f60f Windows write-cache wording improvement. 2007-12-16 14:05:12 +00:00
Bruce Momjian
900f84e275 Update write-cache docs to mention windows behavior for various 
fsync_methods.

Magnus.
 2007-12-16 14:03:32 +00:00
Bruce Momjian
9377e6a7ba Wording improvement for write-cache disabling instructions. 2007-12-10 22:08:36 +00:00
Bruce Momjian
3e113efdf0 Write cache doc cleanups 
Greg Smith
 2007-12-10 14:51:10 +00:00
Bruce Momjian
51a33519b0 Document how to turn off disk write cache on popular operating systems. 2007-12-10 14:05:05 +00:00
Peter Eisentraut
9293425819 spell checker run 2007-11-28 15:42:31 +00:00
Tom Lane
4a78cdeb6b Support an optional asynchronous commit mode, in which we don't flush WAL 
before reporting a transaction committed.  Data consistency is still
guaranteed (unlike setting fsync = off), but a crash may lose the effects
of the last few transactions.  Patch by Simon, some editorialization by Tom.
 2007-08-01 22:45:09 +00:00
Tom Lane
867e2c91a0 Implement "distributed" checkpoints in which the checkpoint I/O is spread 
over a fairly long period of time, rather than being spat out in a burst.
This happens only for background checkpoints carried out by the bgwriter;
other cases, such as a shutdown checkpoint, are still done at full speed.

Remove the "all buffers" scan in the bgwriter, and associated stats
infrastructure, since this seems no longer very useful when the checkpoint
itself is properly throttled.

Original patch by Itagaki Takahiro, reworked by Heikki Linnakangas,
and some minor API editorialization by me.
 2007-06-28 00:02:40 +00:00
Bruce Momjian
a134ee3379 Update documentation on may/can/might: 
Standard English uses "may", "can", and "might" in different ways:

        may - permission, "You may borrow my rake."

        can - ability, "I can lift that log."

        might - possibility, "It might rain today."

Unfortunately, in conversational English, their use is often mixed, as
in, "You may use this variable to do X", when in fact, "can" is a better
choice.  Similarly, "It may crash" is better stated, "It might crash".

Also update two error messages mentioned in the documenation to match.
 2007-01-31 20:56:20 +00:00
Peter Eisentraut
818ac8479b Correct misspellings of kB. 2006-11-25 22:44:48 +00:00
Peter Eisentraut
0f763503ff Spellchecking and such 2006-10-23 18:10:32 +00:00
Bruce Momjian
32cebaecff Remove emacs info from footer of SGML files. 2006-09-16 00:30:20 +00:00
Bruce Momjian
43e9bab94a Rename Online Backup to Continuous Archiving. 2006-03-03 22:02:08 +00:00
Peter Eisentraut
39dfbe5791 Spellchecking run, final cleanups 2005-11-04 23:14:02 +00:00
Tom Lane
f72a342fb7 Copy-editing for recent documentation changes relevant to WAL, 
full_page_writes, etc.
 2005-10-22 21:56:07 +00:00
Bruce Momjian
165565cd94 Some additional doc changes based around compression of page images in 
WAL and the interaction of the new full_page_writes parameter with PITR.

The too-small WAL first sect1 has been merged with the one following
sect1 for clarity.

Some minor comments have been made in the WAL config section also.

Passes SGML make and proofread for typos.
Files changed:
patching file doc/src/sgml/backup.sgml
patching file doc/src/sgml/config.sgml
patching file doc/src/sgml/wal.sgml

Simon Riggs
 2005-10-13 17:32:42 +00:00
Bruce Momjian
ca8cfc9846 Adjust wording. 2005-10-01 01:42:43 +00:00
Bruce Momjian
7f66816b5d Remove acronym in one title. 2005-09-29 02:29:48 +00:00
Bruce Momjian
4ff203262b Fix typo. 2005-09-28 18:40:28 +00:00
Bruce Momjian
e05a8c553c Add section on reliable operation, talking about caching and storage 
subsystem reliability.
 2005-09-28 18:18:02 +00:00
Neil Conway
ec7a6bd9a2 Replace "--" and "---" with "—" as appropriate, for better-looking 
output.
 2004-11-15 06:32:15 +00:00
Neil Conway
db1531f6d8 Fix typo, other minor improvements. 2004-11-15 04:35:57 +00:00
Tom Lane
8e953e6fbb Update admin guide's discussion of WAL to match present reality. 2004-08-08 04:34:43 +00:00
Neil Conway
80ec228389 Refer to GUC variables using <xref> tags rather than <varname> tags, 
where appropriate. Add "id" and "xreflabel" tags to the descriptions
of the GUC variables to facilitate this. Also make a few minor docs
cleanups.
 2004-03-09 16:57:47 +00:00
Neil Conway
bc028beb16 Make the 'wal_debug' GUC variable a boolean (rather than an integer), and 
hide it behind #ifdef WAL_DEBUG blocks.
 2004-01-06 17:26:23 +00:00
PostgreSQL Daemon
969685ad44 $Header: -> $PostgreSQL Changes ... 2003-11-29 19:52:15 +00:00
Tom Lane
f3ad615ce8 Fix a batch of speling misteaks identified by Peter's spell-checker tool. 2003-09-20 20:12:05 +00:00
Peter Eisentraut
c326d8f4f2 Add/edit index entries. 2003-08-31 17:32:24 +00:00
Peter Eisentraut
d258ba01ec Another big editing pass for consistent content and presentation. 2003-03-24 14:32:51 +00:00
Bruce Momjian
2986aa6a66 Add checkpoint_warning to warn of excessive checkpoints caused by too 
few WAL files.
 2002-11-15 02:44:57 +00:00
Tom Lane
77fcc1cbae Fix some misstatements in WAL parameter discussion. 2002-11-02 22:23:01 +00:00
Bruce Momjian
b4295d052e Fix another typo. 2002-09-06 20:26:00 +00:00
Bruce Momjian
022eb280af Fix typo. 2002-09-06 20:08:06 +00:00
Bruce Momjian
2c65658c04 Improve wording after wal_files removal. 2002-08-30 16:53:34 +00:00
Bruce Momjian
63653f7ffa Complete TODO item: 
* Remove wal_files postgresql.conf option because WAL files are
	  now recycled
 2002-08-30 16:50:50 +00:00
Bruce Momjian
d66f172f4b Don't document that UNDO is certain to be added in the future. 2002-07-05 19:06:11 +00:00