Memory-waste in Ubuntu/Debian?


 
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Old 03-04-2006
Memory-waste in Ubuntu/Debian?

I have 512 mem on this laptop, though 'top' tells me I only have 380. However, Ubuntu is using 288 mb of memory, when I only have 3 terminals, running lynx, vim(for this file) and (of course) top. Considering it I have lynx running a 600 page txt file, which of course would eat some memory but 300? And even worse when i start X. Let's try it. First I reboot since she's been up a couple of hours.

Before X is launched:

Mem: 385812k total, 178516k used, 207296k free, 8700k buffered

Staring at the buffered memory for one minute it's now increased to 8852.
Used mem has also increased to 178888. 300 k on two lines.
(That's probably the two most expensive ascii-lines I've ever seen.)

After X is launched: (mem already at: used: 179260 and buff: 9388)

Mem: 385812k total, 264612k used, 121200k free, 13604k buffered
That's about 80 meg. Starting timer.
13:12:30 (with the above memory)

13:17:30 (five minutes later)
Mem: 385812k total, 265356k used, 120456k free, 14144k buffered

That's another 5 meg memory used. For just staring at the 'top' program.
In two hours I'll run out of memory! What's happening behind the scenes?

Before i rebooted I checked my free memory after starting X.
It went down to 35 meg. It'd been up for 3-3.5 hours running a 600+ page txt file in lynx.

Regards
Richard

(Mem is now (13:27:00) used: 266852 free: 118960 buff: 15220
A lot less in ten minutes than in five... Hmmm...)
 
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WHAT-PATCH(1)						      General Commands Manual						     WHAT-PATCH(1)

NAME
what-patch - detect which patch system a Debian package uses SYNOPSIS
what-patch [options] DESCRIPTION
what-patch examines the debian/rules file to determine which patch system the Debian package is using. what-patch should be run from the root directory of the Debian source package. OPTIONS
Listed below are the command line options for what-patch: -h, --help Display a help message and exit. -v Enable verbose mode. This will include the listing of any files modified outside or the debian/ directory and report any additional details about the patch system if available. AUTHORS
what-patch was written by Kees Cook <kees@ubuntu.com>, Siegfried-A. Gevatter <rainct@ubuntu.com>, and Daniel Hahler <ubuntu@thequod.de>, among others. This manual page was written by Jonathan Patrick Davies <jpds@ubuntu.com>. Both are released under the GNU General Public License, version 3 or later. SEE ALSO
The Ubuntu MOTU team has some documentation about patch systems at the Ubuntu wiki: https://wiki.ubuntu.com/PackagingGuide/PatchSystems cdbs-edit-patch(1), dbs-edit-patch(1), dpatch-edit-patch(1) DEBIAN
Debian Utilities WHAT-PATCH(1)