Vacuum verbose question - PostgreSQL Database

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VACUUM degrades performance significantly. Database becomes unusable!

by: Stephen | last post by:

Hello, Is it normal for plain VACUUM on large table to degrade performance by over 9 times? My database becomes unusable when VACUUM runs. From reading newsgroups, I thought VACUUM should only slow down by 10% to 15%. Other MVCC databases like MySQL InnoDB can even VACUUM discretely (runs internally). Is it my Linux system or is it PostgreSQL? The database is mostly read-only. There are 133,000 rows and each row is about 2.5kB in size...

PostgreSQL Database

2235

VACUUM VERBOSE ANALYZE does not work on 7.4.1

by: Joseph Shraibman | last post by:

Trying this: VACUUM VERBOSE ANALYZE; on a 7.4.1 database only does a vacuum, not the analyze. I've tried this on two seperate databases. Is this a known bug? I haven't seen anything about it. ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster

PostgreSQL Database

6327

Postgres: VACUUM

by: lnd | last post by:

Any comments on multi-versioning problem: As far as I understand from PG documentation, *CURRENTLY* VACUUM must be run regulary, otherwise: -Q. database will grow as fast as there are many DML going on it, won't it? -Q. transaction ID may wrap - no doubt here. -Q. Good news that VACUUM nowdays can run in parallel with other db activity

PostgreSQL Database

7190

Large table performance and vacuum

by: Gavin Scott | last post by:

Hi, I'm having a performance problem with a large database table we use with postgres 7.3.4. The table is: db=> \d log Table "public.log" Column | Type | Modifiers ---------+----------+----------- hid | integer |

PostgreSQL Database

1720

Problems Vacuum'ing

by: Jim Seymour | last post by:

Hi, Environment: PostgreSQL 7.4.2 Locally built with GCC 3.3.1 Solaris 8 (Sparc) I have a relatively simple database created with...

PostgreSQL Database

2010

allowing vacuum/ analyze to operate on whole schemas.

by: Rajesh Kumar Mallah | last post by:

Greeting, Will it be an useful feature to be able to vacumm / analyze all tables in a given schema. eg VACUUM schema.* ; at least for me it will be a good feature.

PostgreSQL Database

2385

Interpreting vacuum verbosity

by: Ed L. | last post by:

If I see VACUUM ANALYZE VERBOSE output like this... INFO: --Relation public.foo-- INFO: Index idx_foo_bar: Pages 219213; Tuples 28007: Deleted 9434. CPU 17.05s/4.58u sec elapsed 3227.62 sec. ....am I correct in reading this to say that it took more than 53 minutes (3227 secs) to get 17 seconds of CPU time? Is this an indicator of possible I/O contention? What else would account for this if my CPUs are clearly not very busy?

PostgreSQL Database

2061

Vacuum related question

by: G. Thomas Yagel, Jr. | last post by:

I have a postgresql database into which I inserted about 40 million records over a 12 hour period. I did not perform any updates or deleletes on the records. After 12 hours I stopped inserting recods and started a "vacuum verbose". The vacuuming has taken almost 2 hours now and is not even finished. What I don't understand is why there is so much vacuuming to be done on some tables that are only being inserted into. As an example, I...

PostgreSQL Database

2537

Repeated VACUUM reports same number of deleted rows

by: Russell Smith | last post by:

Postgresql 7.4.5 The following VACUUMs were run within a couple of minutes of each other completing. This table concerned is a table that has not been changed in a long time. (a month) There were open transactions at the time the vacuum was run. These were created by having PHP running with postgresql. At least that is what I have managed to find so far. and disabling PHP in apache removes them. postgres 7588 0.0 0.4 50324 3168 ? ...

PostgreSQL Database

9621

What is ONU?

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ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...

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Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...

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Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

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In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...

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AI Job Threat for Devs

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Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...

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Access Europe - Using VBA to create a class based on a table - Wed 1 May

by: isladogs | last post by:

The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...

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Couldn’t get equations in html when convert word .docx file to html file in C#.

by: conductexam | last post by:

I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...

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A Windows Forms form does not have the event Unload, like VB6. What one acts like?

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How to add payments to a PHP MySQL app.

by: muto222 | last post by:

How can i add a mobile payment intergratation into php mysql website.

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Comprehensive Guide to Website Development in Toronto: Expert Insights from BSMN Consultancy

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In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

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