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List: kde-devel
Subject: Ksysguard is useless!
From: "John Tapsell" <johnflux () gmail ! com>
Date: 2007-01-03 12:06:03
Message-ID: 43d8ce650701030406y48dd5608j689f1d98adccc886 () mail ! gmail ! com
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Hey all,
ksysguard, top and so on gives totally useless values for memory
usage, double so for kde4. I have been moaning/complaining to anyone
who would listen about how much memory ksysguard uses. However this
was based on bad information.
Here's my quick analysis for the actual ksysguard process. I hope
this will be useful to anyone else wanting to understand the memory
usage of a kde4 app as I think ksysguard is fairly typical.
* The virtual memory usage is about 120MB. This number means nothing at all.
* The RSS memory usage is about 22MB (or 26MB after viewing the graphs).
* It uses about 5MB of video card memory. (For comparision, kde3
kicker uses about 2MB but something like konqueror will use about 2MB
per tab)
The above 3 are what ksysguard itself reports (as does top etc)
* The actual unique amount of memory allocated by ksysguard is 6MB
(or 10MB after viewing the graphs). Of this, about 5MB (9MB) is for
the malloc'ed data.
* 15MB is used for shared libraries and thus only allocated once for
all kde4 apps.
This is with debug versions of kde and Qt.
JohnFlux
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