http://www.talkaboutdatabases.com/group/pgsql.performance/ $ en-us Copyright 2003-2005, Talk About Network. All Rights Reserved. 2008-07-06T19:07:33+00:00 TAN rss@talkaboutnetwork.com Discussion hourly 1 1970-01-01T00:00+00:00 http://tan12.talkaboutnetwork.com/images/spacer.gif http://www.talkaboutdatabases.com/group/pgsql.performance/ http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19909.html Hi, Here http://www.westnet.com/~gsmith/content/postgresql/TuningPGWAL.htm I re= ad: Combining these two, an optimal fstab for the WAL might look like this: /dev/hda2 /var ext3 defaults,writeback,noatime 1 2 Is this info accurate? I also read o... jcasanov@[EMAIL PROTECTED] (Jaime Casan... Discussion 2008-07-06T00:04:31+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19906.html --0-1585574652-1215257089=:45734 Content-Type: text/plain charset=us-ascii How can I tell if my work_mem configuration is enough to support all Postgres user activities on the server I am managing? Where do I find the indication if the number is l... rjessil@[EMAIL PROTECTED] (Jessica Rich... Discussion 2008-07-05T04:24:49+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19901.html --0-1212549373-1215174606=:4752 Content-Type: text/plain charset=us-ascii Thanks so much for your help. I can select the 80K data out of 29K rows very fast, but we I delete them, it always just hangs there( 4 hours without finishing), not deleting ... rjessil@[EMAIL PROTECTED] (Jessica Rich... Discussion 2008-07-04T05:30:06+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19896.html --0-250978347-1215132280=:18257 Content-Type: text/plain charset=us-ascii I have a table with 29K rows total and I need to delete about 80K out of it. I have a b-tree index on column cola (varchar(255) ) for my where clause to use. my select count... rjessil@[EMAIL PROTECTED] (Jessica Rich... Discussion 2008-07-03T17:44:40+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19893.html Hi, I have juste some questions about cursor/Fetch mechanisms under postgreSQL. Do it use only scan table approach when one fetch (next) is executed or it takes into account index when this lasts one is able to increase the performance. I did ... amine.mokhtari@[EMAIL PROTECTED] (Mokht... Discussion 2008-07-03T12:17:47+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19891.html Hi. I have a table with 1.8M rows on a Postgres 8.1.4 server, and Im executing a query which looks like: select count(*) from header_fields where message in (select message from mailbox_messages limit N) Ive found that when N==75, the quer... ams@[EMAIL PROTECTED] (Abhijit Menon-Se... Discussion 2008-07-03T13:29:00+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19886.html ------=_Part_6230_3767665.1215023471011 Content-Type: text/plain charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi guys, How are you ? I am from Brazil and i work for a little company and it company is working is me... tlevisilva@[EMAIL PROTECTED] (=?ISO-885... Discussion 2008-07-02T15:31:10+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19879.html ------=_Part_2189_33309263.1215001883272 Content-Type: text/plain charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi all, We have upgraded our database server to postgres 8.3.1 on 28th June. Checked out the performan... meetgaurikanekar@[EMAIL PROTECTED] (Gau... Discussion 2008-07-02T18:01:23+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19875.html I recently got my hands on a device called ioDrive from a company called Fusion-io. The ioDrive is essentially 80GB of flash on a PCI card. It has its own driver for Linux completely outside of the normal scsi/sata/sas/fc block device stack, but fr... jwbaker@[EMAIL PROTECTED] (Jeffrey Bake... Discussion 2008-07-01T17:18:53+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19873.html Hi I have a select statement that runs on a partition having say couple million rows. The tabel has indexes on two colums. However the query uses the non-indexed colums too in its where clause. For example: SELECT lane_id,measurement_start, measureme... sam.mahindrakar@[EMAIL PROTECTED] (sama... Discussion 2008-07-01T15:29:26+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19870.html Emiliano Leporati emiliano.leporati@gmail.com writes: can anybody explain me why this happens ? and if i should try different indexes ? Showing EXPLAIN ANALYE output would probably make things a lot clearer. regards, tom lane -- Sent via pgs... tgl@[EMAIL PROTECTED] (Tom Lane) Discussion 2008-07-01T10:18:20+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19869.html On Tue, Jul 1, 2008 at 4:49 AM, Emiliano Leporati emiliano.leporati@gmail.com wrote: Hi, i have a table with a huge amount of rows (actually 4 millions and a half), defined like this: CREATE TABLE rtp_frame ( i_len integer NOT NULL, i_... scott.marlowe@[EMAIL PROTECTED] (Scott ... Discussion 2008-07-01T08:17:17+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19868.html This is a multi-part message in MIME format. ------_=_NextPart_001_01C8DB71.E16C4F99 Content-Type: text/plain charset=us-ascii Content-Transfer-Encoding: quoted-printable Hi, We are seeing system hang-up issue when we do continuous up... Jeevanandam.Kathirvel@[EMAIL PROTECTED] ... Discussion 2008-07-01T17:29:13+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19862.html Hi, I have problems with my database becoming huge in size (around 150 GB right now, and 2/3 for only three tables, each having around 30 millions tuples. Space is spent mainly on indices.). I have a lot of multi-column varchar primary keys (natura... franck.routier@[EMAIL PROTECTED] (Franc... Discussion 2008-06-30T18:57:58+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19853.html --tThc/1wpZn/ma/RB Content-Type: text/plain charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello, my understanding, and generally my experience, has been that VACUUM and VACUUM ANALYZE (but not VACUUM FULL)... peter.schuller@[EMAIL PROTECTED] (Peter... Discussion 2008-06-30T16:59:03+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19835.html ------=_Part_16508_15327073.1214799620100 Content-Type: multipart/alternative boundary=----=_Part_16509_10085576.1214799620100 ------=_Part_16509_10085576.1214799620100 Content-Type: text/plain charset=ISO-8859-1 Content-Transfer-Encoding: 7bit C... nimesh.zedo@[EMAIL PROTECTED] (Nimesh S... Discussion 2008-06-30T09:50:15+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19830.html Im having a strange problem with a query. The query is fairly simple, with a few constants and two joins. All relevant columns should be indexed, and Im pretty sure there arent any type conversion issues. But the query plan includes a fairly heavy... john.e.beaver@[EMAIL PROTECTED] (John B... Discussion 2008-06-29T17:52:24+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19829.html On Fri, 27 Jun 2008, S=E9rgio R F Oliveira wrote: I need to specify servers and storage to run PostgreSQL. Does anyone know any source of information (articles, presentations, books, etc.) which describes methods of hardware sizing for running a ... gsmith@[EMAIL PROTECTED] (Greg Smith) Discussion 2008-06-29T15:04:21+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19822.html Hi, I have a query select count(*) from result where exists (select * from item where item.url LIKE result.url || % limit 1) which basically returns the number of items which exist in table=20=20 result and match a URL in table item by its... onken@[EMAIL PROTECTED] (Moritz Onken) Discussion 2008-06-28T18:24:42+00:00 http://www.talkaboutdatabases.com/group/pgsql.performance/messages/19820.html Hi, I am new to SQL and have two tables..., processor and users_processors. The first table contains Processors: CREATE TABLE processor ( id SERIAL, speed varchar(50) NOT NULL, type int2 NOT NULL, PRIMARY KEY (id) ) CREATE UNIQUE INDEX processor_s... ulrich.mierendorff@[EMAIL PROTECTED] (U... Discussion 2008-06-28T17:22:41+00:00 Search talkaboutdatabases.com Pgsql Performance q http://talkaboutdatabases.com/group/pgsql.performance/search.html