- 24 9月, 2007 2 次提交
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由 Tom Lane 提交于
later than latestCompletedXid, per Florian Pflug. Also some minor improvements in the XIDCACHE_DEBUG code --- make sure each call of TransactionIdIsInProgress is counted one way or another.
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由 Bruce Momjian 提交于
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- 23 9月, 2007 5 次提交
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由 Tom Lane 提交于
out at erratic times, because it is creating a totally unacceptable level of noise in our buildfarm results. This patch can be reverted when and if the code is fixed to not issue notices during cache reload events.
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由 Tom Lane 提交于
(because they are uncorrelated with the immediate parent query). We were charging the full run cost to the parent node, disregarding the fact that only one row need be fetched for EXISTS. While this would only be a cosmetic issue in most cases, it might possibly affect planning outcomes if the parent query were itself a subquery to some upper query. Per recent discussion with Steve Crawford.
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由 Andrew Dunstan 提交于
calls. Fixes complaint fron Hannes Eder, whose environment found a different dir program.
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由 Tom Lane 提交于
syslog and eventlog severity levels, per suggestion from Josh Drake. Also, some wordsmithing for the csvlog documentation.
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由 Tom Lane 提交于
per ITAGAKI Takahiro. Also, rewrite syslogger_forkexec() in hopes of eliminating the confusion in the first place.
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- 22 9月, 2007 11 次提交
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由 Tom Lane 提交于
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由 Tom Lane 提交于
uses of PG_DETOAST_DATUM_SLICE, but it's clearly trouble waiting to happen.
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由 Tom Lane 提交于
buildfarm member grebe, I see no reason to revert the 1-byte-header-friendly changes I made in varlena.c. Instead, tweak the code a little bit to get more advantage out of that.
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由 Tom Lane 提交于
malloc returns NULL for malloc(0). Defend against that case.
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由 Andrew Dunstan 提交于
character encodings that doesn't involve calling lower(). This should cure the performance regression in this case complained of by Guillaume Smet. It still leaves the horrid performance for multi-byte encodings introduced in 8.2, but there's no obvious solution for that in sight.
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由 Tom Lane 提交于
demonstrably necessary for text_substring() since regexp_split functions may pass it such a value; and we might as well convert the whole file at once. Per buildfarm results (though I wonder why most machines aren't showing a failure).
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由 Tom Lane 提交于
to not cause needless copying of text datums that have 1-byte headers. Greg Stark, in response to performance gripe from Guillaume Smet and ITAGAKI Takahiro.
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由 Tom Lane 提交于
unpruned XMAX in its header. At the cost of 4 bytes per page, this keeps us from performing heap_page_prune when there's no chance of pruning anything. Seems to be necessary per Heikki's preliminary performance testing.
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由 Tom Lane 提交于
TransactionIdDidAbort, when handling the case that xmin is one of the current transaction's XIDs and the tuple has been deleted. xmax must also be one of the current transaction's XIDs, since no one else can see it yet, and it's cheaper to look at local state than shared state to find out if xmax aborted. Per an idea of Heikki's.
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由 Tom Lane 提交于
For XIDs of our own transaction and subtransactions, it's cheaper to ask TransactionIdIsCurrentTransactionId() than to look in shared memory. Also, the xids[] work array is always the same size within any given process, so malloc it just once instead of doing a palloc/pfree on every call; aside from being faster this lets us get rid of some goto's, since we no longer have any end-of-function pfree to do. Both ideas by Heikki.
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由 Tom Lane 提交于
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- 21 9月, 2007 9 次提交
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由 Michael Meskes 提交于
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由 Tom Lane 提交于
it ought to know that you need -DLINUX_PROFILE on Linux.
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由 Tom Lane 提交于
has a bad habit of launching multiple threads within the backend and thereby causing all kinds of havoc. Fortunately, we don't need it, and recent Tcl versions provide an easy way to disable it. Diagnosis and fix by Steve Marshall, Paul Bayer, and Doug Knight of WSI Corporation.
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由 Tom Lane 提交于
but got lost from the version committed to main tree. Per Greg Stark.
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由 Tom Lane 提交于
truncates a table. Introduces race condition, as shown by buildfarm failures.
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由 Bruce Momjian 提交于
> * -Consider shrinking expired tuples to just their headers > * -Allow heap reuse of UPDATEd rows if no indexed columns are changed, > and old and new versions are on the same heap page Not needed anymore: < * Reuse index tuples that point to heap tuples that are not visible to < anyone?
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由 Andrew Dunstan 提交于
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由 Teodor Sigaev 提交于
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由 Tom Lane 提交于
columns, and the new version can be stored on the same heap page, we no longer generate extra index entries for the new version. Instead, index searches follow the HOT-chain links to ensure they find the correct tuple version. In addition, this patch introduces the ability to "prune" dead tuples on a per-page basis, without having to do a complete VACUUM pass to recover space. VACUUM is still needed to clean up dead index entries, however. Pavan Deolasee, with help from a bunch of other people.
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- 20 9月, 2007 1 次提交
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由 Neil Conway 提交于
values. The previous coding essentially assumed that x = sqrt(x*x), which does not hold for x < 0. Thanks to Jie Zhang at Greenplum and Gavin Sherry for reporting this issue.
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- 19 9月, 2007 2 次提交
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由 Bruce Momjian 提交于
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由 Andrew Dunstan 提交于
database via builtin functions, as recently discussed on -hackers. chr() now returns a character in the database encoding. For UTF8 encoded databases the argument is treated as a Unicode code point. For other multi-byte encodings the argument must designate a strict ascii character, or an error is raised, as is also the case if the argument is 0. ascii() is adjusted so that it remains the inverse of chr(). The two argument form of convert() is gone, and the three argument form now takes a bytea first argument and returns a bytea. To cover this loss three new functions are introduced: . convert_from(bytea, name) returns text - converts the first argument from the named encoding to the database encoding . convert_to(text, name) returns bytea - converts the first argument from the database encoding to the named encoding . length(bytea, name) returns int - gives the length of the first argument in characters in the named encoding
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- 18 9月, 2007 3 次提交
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由 Teodor Sigaev 提交于
per notice by Gregory Stark <stark@enterprisedb.com>
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由 Bruce Momjian 提交于
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由 Bruce Momjian 提交于
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- 17 9月, 2007 1 次提交
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由 Tom Lane 提交于
we'd dump core anyway immediately afterward if it were null; and it seems to confuse some versions of icc into generating bad code. Per report from Sergey Koposov. Patched in HEAD only, for the moment, since this is only likely to affect developers.
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- 16 9月, 2007 3 次提交
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由 Tom Lane 提交于
Seems to have been introduced in 8.1 by careless SECS_PER_DAY search-and-replace.
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由 Tom Lane 提交于
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由 Tom Lane 提交于
no-longer-needed pages at the end of a table. We thought we could throw away pages containing HEAPTUPLE_DEAD tuples; but this is not so, because such tuples very likely have index entries pointing at them, and we wouldn't have removed the index entries. The problem only emerges in a somewhat unlikely race condition: the dead tuples have to have been inserted by a transaction that later aborted, and this has to have happened between VACUUM's initial scan of the page and then rechecking it for empty in count_nondeletable_pages. But that timespan will include an index-cleaning pass, so it's not all that hard to hit. This seems to explain a couple of previously unsolved bug reports.
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- 15 9月, 2007 3 次提交
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由 Bruce Momjian 提交于
Jun Kuwamura
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由 Bruce Momjian 提交于
> > o Prevent long-lived temporary tables from causing frozen-xid > advancement starvation > > http://archives.postgresql.org/pgsql-general/2007-06/msg01645.php
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由 Bruce Momjian 提交于
> > * Make it possible to use RETURNING together with conditional DO INSTEAD > rules, such as for partitioning setups > > http://archives.postgresql.org/pgsql-hackers/2007-09/msg00577.php
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