[PERFORM] transaction ID wrap limit

Hi all, A vacuum full command logs the message: ... LOG: transaction ID wrap limit is 1073822617, limited by database "A" Sometimes ago, the vacuum full logged: ... LOG: transaction ID wrap limit is 2147484148, limited by database "A" What causes that difference of the limit ? Should I set or

[PERFORM] VACUUM vs auto-vacuum daemon

Hi there, Using explicitly VACUUM command give me the opportunity to fine tune my VACUUM scheduling parameters, after I analyze the log generated by VACUUM VERBOSE. On the other hand I'd like to use the auto-vacuum mechanism because of its facilities. Unfortunately, after I made some initial e

Re: [PERFORM] VACUUM vs auto-vacuum daemon

Hi Bill, ... > > However, you can get some measure of tracking my running VACUUM VERBOSE > on a regular basis to see how well autovacuum is keeping up. There's > no problem with running manual vacuum and autovacuum together, and you'll > be able to gather _some_ information about how well autovac

[PERFORM] Parsing VACUUM VERBOSE

Hi there, I'd like to understand completely the report generated by VACUUM VERBOSE. Please tell me where is it documented ? TIA, Sabin ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster

Re: [PERFORM] Parsing VACUUM VERBOSE

Hi Guillaume, Very interesting ! Merci beaucoup, Sabin ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match

Re: [PERFORM] Parsing VACUUM VERBOSE

""Guillaume Smet"" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Sabin, > > On 6/14/07, Sabin Coanda <[EMAIL PROTECTED]> wrote: >> I'd like to understand completely the report generated by VACUUM VERBOSE. >> Please tell m

[PERFORM] vacuum a lot of data when insert only

Hi there, Reading different references, I understand there is no need to vacuum a table where just insert actions perform. So I'm surprising to see a table with just historical data, which is vacuumed at the nightly cron with a simple VACUUM VERBOSE on about 1/3 of indexes amount. Take a look

Re: [PERFORM] PostgreSQL Configuration Tool for Dummies - feedback adjustable control

""Campbell, Lance"" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] Below is a link to the HTML JavaScript configuration page I am creating: http://www.webservices.uiuc.edu/postgresql/ I had many suggestions. Based on the feedback I received, I put together the i

Re: [PERFORM] PostgreSQL Configuration Tool for Dummies - feedback adjustable control

<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On Fri, 22 Jun 2007, Sabin Coanda wrote: > >> Instead of (or in addition to) configure dozens of settings, what do you >> say about a feedback adjustable control based on the existing system >> st

Re: [PERFORM] can't shrink relation

sorry for the previous incomplete post. I continue with the log: NOTICE: relation "pg_shdepend" TID 11/1: DeleteTransactionInProgress 2657075 --- can't shrink relation NOTICE: relation "pg_shdepend" TID 11/2: DeleteTransactionInProgress 2657075 --- can't shrink relation . NOTICE: relation

[PERFORM] can't shrink relation

Hi there, I have a database with lowest possible activity. I run VACUUM FULL AND I get the following log result: ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your jo

[PERFORM] How check execution plan of a function

Hi there, I have a function which returns setof record based on a specific query. I try to check the execution plan of that query, so I write EXPLAIN ANALYZE before my select, I call the function and I see the result which shows an actual time about 5 seconds. But when I call my function after I

Re: [PERFORM] How check execution plan of a function

Maybe other details about the source of the problem help. The problem occured when I tried to optimize the specified function. It was running in about 3 seconds, and I needed to be faster. I make some changes and I run the well known "CREATE OR REPLACE FUNCTION ..." After that, my function exec

Re: [PERFORM] How check execution plan of a function

I have just a function returning a cursor based on a single coplex query. When I check the execution plan of that query it takes about 3 seconds. Just when it is used inside the function it freezes. This is the problem, and this is the reason I cannot imagine what is happen. Also I tried to rec

[PERFORM] count is ten times faster

Hi there, I have a simple aggregate query: SELECT count("PK_ID") AS "b1" FROM "tbA" WHERE "PK_ID" > "f1"( 'c1' ), which has the following execution plan: "Aggregate (cost=2156915.42..2156915.43 rows=1 width=4)" " -> Seq Scan on "tbA" (cost=0.00..2137634.36 rows=7712423 width=4)" "Filt

[PERFORM] check performance parameters

Hi there, I have an application accessing a postgres database, and I need to estimate the following parameters: - read / write ratio - reads/second on typical load / peak load - writes/second on typical load / peak load Is there any available tool to achieve that ? TIA, Sabin -- Sent via

[PERFORM] long transaction

Hi there, I have a script which includes 3 called functions within a single transaction. At the beginning, the functions runs fast enough (about 60 ms each). In time, it begins to run slower and slower (at final about one per 2 seconds). I check the functions that runs slowly outside the s

Re: [PERFORM] long transaction

age news:[EMAIL PROTECTED] > have you use VACUMM? > > --- On Fri, 7/18/08, Sabin Coanda <[EMAIL PROTECTED]> wrote: > >> From: Sabin Coanda <[EMAIL PROTECTED]> >> Subject: [PERFORM] long transaction >> To: pgsql-performance@postgresql.org >> Date: Friday,

Re: [PERFORM] long transaction

> long running transactions can be evil. is there a reason why this has > to run in a single transaction? This single transaction is used to import new information in a database. I need it because the database cannot be disconected from the users, and the whole new data has to be consistently. T

Re: [PERFORM] long transaction

> > have you considered importing to a temporary 'holding' table with > copy, then doing 'big' sql statements on it to check constraints, etc? > Yes I considered it, but the problem is the data is very tight related between different tables and is important to keep the import order of each entit

Re: [PERFORM] Different execution plan

Hi there, I am still concerned about this problem, because there is a big differences between the two cases, and I don't know how to identify the problem. Can anybody help me, please ? TIA, Sabin -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes

Re: [PERFORM] Different execution plan

Hi Scott, I think it would be nice to log the reasons why an explain analyze chooses a specific way or another for an execution plan. This would avoid wasting time to find the source of these decisions from the existing logs. Is it possible ? TIA, Sabin -- Sent via pgsql-performance maili

Re: [PERFORM] Different execution plan

I use postgresql-8.2-506.jdbc3.jar, maybe helps Sabin -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance

[PERFORM] low performance on functions returning setof record

Hi there, I use different functions returning setof record, and they are working well. The problem is the performance when I use those functions in joins, for instance: SELECT * FROM "Table1" t1 JOIN "Function1"( a1, a2, ... aN ) AS f1( ColA int4, ColB varchar,

[PERFORM] procedure takes much more time than its query statement

Hi there, I have the function: CREATE OR REPLACE FUNCTION "Test"( ... ) RETURNS SETOF record AS $BODY$ BEGIN RETURN QUERY SELECT ...; END; $BODY$ LANGUAGE 'plpgsql' STABLE The function call takes about 5 minute to proceed, but using directly its query statement, after replacing the arguments w

Re: [PERFORM] procedure takes much more time than its query statement

Excelent ! You are right Thanks a lot Sabin "Craig Ringer" wrote in message news:4eb0a920.1010...@ringerc.id.au... > On 11/01/2011 10:01 PM, Sabin Coanda wrote: >> Hi there, >> >> I have the function: >> CREATE OR REPLACE FUNCTION "Test"( ...