What is the datatype of the id column?
-tfo
On Aug 31, 2004, at 1:11 PM, Ron St-Pierre wrote:
We have a web based application with data that is updated daily. The
biggest bottleneck occurs when we try to update
one of the tables. This table contains 58,000 rows and 62 columns, and
EVERY column
?
Thanks!
-tfo
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Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-260-0005
On Oct 21, 2004, at 3:36 PM, Thomas F.O'Connell wrote:
I'm seeing some weird behavior on a repurposed server
and update the counts in a summary update based on
information from the import process?
-tfo
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Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-260-0005
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or without more extensive testing than I'm likely to have time
for primarily because support for 7.4.x is never likely to increase.
Thanks for the tip, though.
For the time being, it sounds like I'll probably try to implement the
drop/create trigger setup during import.
-tfo
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Thomas F. O'Connell
Co
Please post the results of that query as run through EXPLAIN ANALYZE.
Also, I'm going to reply to this on pgsql-performance, which is
probably where it better belongs.
-tfo
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Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
http://www.sitening.com/
110 30th Avenue North
/GeneralBits/Tidbits/
annotated_conf_e.html
8.0: http://www.powerpostgresql.com/Downloads/annotated_conf_80.html
general tuning
http://www.varlena.com/varlena/GeneralBits/Tidbits/perf.html
-tfo
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Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open Source Open Your i
http
Things might've changed somewhat over the past year, but this is from
_the_ Linux guy at Dell...
-tfo
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open Source Open Your i
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-260
continue to do some experimentation.
I'd be curious to see whether these numbers meet developer expectations
and to see whether the developer and user community have insight into
other pgbench options that would be useful to see.
Thanks!
-tfo
--
Thomas F. O'Connell
Co-Founder, Information
benchmarking. Thanks for the tip.
Since pgbench is part of the postgres distribution and I had it at hand
and it seems to be somewhat widely referenced, I figured I go ahead and
post preliminary results from it.
-tfo
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic
. If you see
anything obvious about the tuning parameters that should be tweaked,
please let me know.
Thanks for the feedback!
-tfo
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open Source: Open Your i
http://www.sitening.com/
110 30th Avenue North, Suite 6
Rohan,You should note that in Postgres, indexes are not inherited by child tables.Also, it seems difficult to select from a child table whose name you don't know unless you access the parent. And if you are accessing the data via the parent, I'm reasonably certain that you will find that indexes
.
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Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open Source: Open Your i™
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-469-5150
615-469-5151 (fax)
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TIP 3
, will
postgres always prefer the index on an ordered column? If I need the
index on the timestamp field for other queries, is my best bet just
to increase sort_mem for this query?
Here's my version string:
PostgreSQL 8.0.3 on i686-pc-linux-gnu, compiled by GCC 2.95.4
--
Thomas F. O'Connell
Co
://www.powerpostgresql.com/
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Strategic Open Source: Open Your i™
http://www.sitening.com/
110 30th Avenue North, Suite 6
Nashville, TN 37203-6320
615-469-5150
615-469-5151 (fax)
---(end of broadcast
.
Thanks for your help,
Katherine Stoovs
Katherine,
If offset is a column in offsets, can you add an index on the
expresion table2.id + offset?
http://www.postgresql.org/docs/8.0/static/indexes-expressional.html
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Open
.1.3.1 (Performance Improvements)? For some of the more extreme
UPDATE scenarios I've seen, this could be a big win.
--
Thomas F. O'Connell
Co-Founder, Information Architect
Sitening, LLC
Open Source Solutions. Optimized Web Development.
http://www.sitening.com/
110 30th Avenue North, Suite 6
realize I could do this with 2 phase commit, but that isn't ready
yet!
Any thoughts or ideas are much appreciated
Thanks
Ralph
2PC might not've been ready yesterday, but it's ready today!
http://www.postgresql.org/docs/whatsnew
--
Thomas F. O'Connell
Database Architecture and Programming
Co
/
pgsqladventuresep3.php
These documents provide some guidance into the process of index
selection. It seems like you could still stand to benefit from more
indexes based on your queries, table definitions, and current indexes.
--
Thomas F. O'Connell
Database Architecture and Programming
Co-Founder
success with this
approach.
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Thomas F. O'Connell
Sitening, LLC
http://www.sitening.com/
3004B Poston Avenue
Nashville, TN 37203-1314
615-469-5150 x802
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TIP 4: Have you searched our list archives
On Aug 8, 2006, at 5:28 PM, Joshua D. Drake wrote:
Thomas F. O'Connell wrote:
On Aug 8, 2006, at 4:49 PM, Joshua D. Drake wrote:
I am considering a setup such as this:
- At least dual cpu (possibly with 2 cores each)
- 4GB of RAM
- 2 disk RAID 1 array for root disk
- 4 disk RAID 1+0
with a
variety of multi-disk RAID 10 configurations at some point.
--
Thomas F. O'Connell
Sitening, LLC
http://www.sitening.com/
3004B Poston Avenue
Nashville, TN 37203-1314
615-469-5150 x802
615-469-5151 (fax)
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