Sponsored Content
Top Forums UNIX for Advanced & Expert Users Please advise good source of info about swapping Post 302614307 by methyl on Wednesday 28th of March 2012 11:52:16 AM
Old 03-28-2012
There is a substantial Wikipedia on this subject (and links to more articles):
Paging - Wikipedia, the free encyclopedia


Quote:
If I have 8Gb RAM and 8Gb swap and an application requests 20Gb will it run out of memory?
No: The request will be refused.
Btw. The old rule that you must have at least as much swap as you have memory does not apply to modern unix.

Many modern unix systems can be configured to use part of memory for swap. This allows the O/S to defragment main memory quickly and quietly.

If you have Oracle, buy enough memory so that it should never swap and be sure that you understand how to size the SGA and PGA and how to measure these sizes using Oracle itself. It is very common to missize the SGA by a factor of 8 or even 16.

Last edited by methyl; 03-28-2012 at 02:20 PM..
 

7 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

how to get swapping info

Hi How can I determine if swapping is occuring on a server. Thanks, Leo (2 Replies)
Discussion started by: leo
2 Replies

2. AIX

Good source of AIX Specific Scripting?

Hi everyone, I need to write some AIX scripts (ksh?), kind of fast so I'm looking for somewhere to get a crash course in it. Are there any AIX Specific Scripting resource sites that anyone can recommend, really not getting a whole lot from google. Thanks in advance, Darren (3 Replies)
Discussion started by: dbridle
3 Replies

3. SuSE

Swapping

Hello! Why does my SuSE GNU/Linux machine swap? I have a Gig of ram, currently 14MBs of free RAM, 724MB - buffers and caches... That is 685MB of cached RAM, then kernel really should'nt have to swap, It should release cached memory in my thinkin... It has only swaped 3MB's but still,... (3 Replies)
Discussion started by: Esaia
3 Replies

4. UNIX for Advanced & Expert Users

source reader info

Hi friends, I urgently need to know if there is any tool called source reader in C or Unix or Linux...... If so ..plz let me know the details.I am running out of time..... (0 Replies)
Discussion started by: vijaya2006
0 Replies

5. UNIX for Dummies Questions & Answers

Good source of X11 programming info?

Is there a good book or something on practical programming in X11? I have the O'Reilly X window system book set. They don't seem to cover the nuances very well (at least for me). So far the only thing I find on the web is the text from these books. Specifically, I'm looking for optimization... (2 Replies)
Discussion started by: willil
2 Replies

6. Solaris

Secondary group info source

Experts, I know when I use id it shows only the primary group information for the given user, and that info comes from passwd file. When I use groups it shows all groups user are member of, however from where come information given by groups command? grep fmtt3990 /etc/passwd... (6 Replies)
Discussion started by: fmattos
6 Replies

7. Solaris

Swapping

Hi Guys I am using SPARC-T4 (chipid 0, clock 2998 MHz), SunOS 5.10 Generic_150400-38 sun4v. How do I see if the server was doing some swapping like yesterday? I had a java application error with java.lang.OutOfMemoryError, now I want to check if the server was not doing some swapping at... (4 Replies)
Discussion started by: Phuti
4 Replies
WWW::Wikipedia(3pm)					User Contributed Perl Documentation				       WWW::Wikipedia(3pm)

NAME
WWW::Wikipedia - Automated interface to the Wikipedia SYNOPSIS
use WWW::Wikipedia; my $wiki = WWW::Wikipedia->new(); ## search for 'perl' my $result = $wiki->search( 'perl' ); ## if the entry has some text print it out if ( $result->text() ) { print $result->text(); } ## list any related items we can look up print join( " ", $result->related() ); DESCRIPTION
WWW::Wikipedia provides an automated interface to the Wikipedia <http://www.wikipedia.org>, which is a free, collaborative, online encyclopedia. This module allows you to search for a topic and return the resulting entry. It also gives you access to related topics which are also available via the Wikipedia for that entry. INSTALLATION
To install this module type the following: perl Makefile.PL make make test make install METHODS
new() The constructor. You can pass it a two letter language code, or nothing to let it default to 'en'. ## Default: English my $wiki = WWW::Wikipedia->new(); ## use the French wiki instead my $wiki = WWW::Wikipedia->new( language => 'fr' ); WWW::Wikipedia is a subclass of LWP::UserAgent. If you would like to have more control over the user agent (control timeouts, proxies ...) you have full access. ## set HTTP request timeout my $wiki = WWW::Wikipedia->new(); $wiki->timeout( 2 ); You can turn off the following of wikipedia redirect directives by passing a false value to "follow_redirects". language() This allows you to get and set the language you want to use. Two letter language codes should be used. The default is 'en'. my $wiki = WWW::Wikipedia->new( language => 'es' ); # Later on... $wiki->language( 'fr' ); follow_redirects() By default, wikipeda redirect directives are followed. Set this to false to turn that off. search() Which performs the search and returns a WWW::Wikipedia::Entry object which you can query further. See WWW::Wikipedia::Entry docs for more info. $entry = $wiki->search( 'Perl' ); print $entry->text(); If there's a problem connecting to Wikipedia, "undef" will be returned and the error message will be stored in "error()". random() This method fetches a random wikipedia page. error() This is a generic error accessor/mutator. You can retrieve any searching error messages here. TODO
o Clean up results. Strip HTML. o Watch the development of Special:Export XML formatting, eg: http://en.wikipedia.org/wiki/Special:Export/perl SEE ALSO
o LWP::UserAgent AUTHORS
Ed Summers <ehs@pobox.com> Brian Cassidy <bricas@cpan.org> COPYRIGHT AND LICENSE
Copyright 2003-2011 by Ed Summers This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2011-04-05 WWW::Wikipedia(3pm)
All times are GMT -4. The time now is 03:27 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy