Linked by Thom Holwerda on Mon 27th Nov 2006 10:55 UTC, submitted by Jean Claude
Linux French députés' offices will be equipped with a Linux operating system and open source productivity software. There will be 1154 French parliamentary workstations running on an open source OS, with OpenOffice.org, Firefox and an open source email client.
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RE[3]: Things to consider
by wibbit on Mon 27th Nov 2006 14:56 UTC in reply to "RE[2]: Things to consider"
wibbit
Member since:
2006-03-22

"linux don't need a lot ram, you can run a light windows manager like icewm with 16meg of ram "

In your imagination of RAM usage you thought that the problem would be the GNU part of Linux(KDE/GNOME/..), whereas the problem truly is from the applications that you will run on linux.


I would agree with this whole heartedly, at least to say. If you were to specifically choose all of your applications to be "light" on memory usage, then choosing a light window manager is worth while.

However, if you choose to use a light window manager, and then run Firefox, Evolution, Gaim, OpenOffice, on top of it, the memory use of the "modern" applications dwarf that of the window manager by so much, the choice is rendered redundant.

Linux applications tend to take more RAM than windows counterpart, even for the same application written by the same software developers.

I may be wrong, but I think one of the main reasons for this, is the fact that when running windows and Microsoft Application, a lot of the libraries that they require and data, are pre-loaded, and as such when you start the "application" be it word or any thing else, the memory foot print does not appear to change all that much. But that is not due to the application taking less ram, it is due to the information already being loaded.

Some may ask, "So What". My only real answer is "I'm a pedant" ;)

Besides, linux loves Caching, thus your memory will be consumed with cache then when more applications start they will start using swap space, you can easily notice this on gnome-system-monitor in case of GNOME or ksysguard in case of KDE. I am currently running 4 applications on CentOS on 1GB RAM and 15% of swap space is already used, leaving performance of the system to hell. Solution will be to install more RAM.

I'm sorry but this is crap, in so far as...

Yes, Linux makes EXCELLENT use of the ram, and any thing that is unused will be used for file system caching. However my understanding is, that as soon as ram is required, file system cache will be dropped, and RAM will be provided. It does not force the use of swap.

That being said, I had noticed that with one of the FC Test releases, that over time ALL of my ram and SWAP was consumed. This was a bug/glitch some where.

A fresh builds with the final release does not echo this issue, and I am fairly certain that all final builds of just about any distro, will not do what you are describing.

I've been runing Evolution, Gaim, Open Office, Terminals, audio players, blah blah blah. And no swap is in use.

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