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List:       kde-devel
Subject:    Re: KDE4 is a memory hog
From:       Robert Knight <robertknight () gmail ! com>
Date:       2009-07-17 13:01:43
Message-ID: 13ed09c00907170601s627518d0t6014809ee47e5a9f () mail ! gmail ! com
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> But it is not really gone - Konsole uses 7mb heap for a one bash tab:

Konsole uses much less memory for scrollback in the development build
of KDE and is better at releasing it to the operating system when tabs
are closed.
Related discussion is ongoing at https://bugs.kde.org/show_bug.cgi?id=176974

Regards,
Robert.

2009/7/17  <dunsens@web.de>:
> Am Freitag, 17. Juli 2009 schrieb Carlo:
>> On Fri, Jul 17, 2009 at 11:45 AM, <dunsens@web.de> wrote:
>> > Hi,
>> >
>> > I have now tried, stepped ahead and installed 4.2.4 on my machines
>> > (debian- desktop.org backports). I have to say that I am quite pleased.
>> > Since the PS3 has a fast swap it is actually capable of running KDE4
>> > sessions. The C3 feels slow, but 512mb seem enough. KWin crashes with my
>> > default settings for openchrome via driver though, so i had to disable
>> > the composite extension. The PS3 feels a bit sluggish, but it does not
>> > really get in your way. You can run Kopete + Firefox + amarok (1.4). This
>> > is really o.k. (No youtube of course, shame at adobe).
>> > I can also login 3 sessions with an typical work environment on the 1gb
>> > ram machines. I get 100-200mb swapping then, but I guess that 4.3 will
>> > improve that due to the nvidia issue.
>> >
>> > Things that I have seen testing with exmap/valgrind --massif:
>> >
>> > -Fonts can make a huge difference. Parts of my high memory usage seem to
>> > be related to using "Free Sans". I am at DejaVu Sans now and it is
>> > better. Dolphin shows high heap usage related to libfreetype for example.
>> > But it is not really gone - Konsole uses 7mb heap for a one bash tab:
>> > 91.09% (6,792,796B) (heap allocation functions) malloc/new/new[],
>> > --alloc-fns, etc.
>> > ->44.73% (3,335,865B) 0x5CCDCEC: (within /usr/lib/libfreetype.so.6.3.18)
>> >
>> > | ->44.73% (3,335,865B) 0x5CD1EBA: ft_mem_qalloc (in
>> >
>> > /usr/lib/libfreetype.so.6.3.18)
>> >
>> > |   ->44.73% (3,335,865B) 0x5CD3B72: ft_mem_alloc (in
>> >
>> > /usr/lib/libfreetype.so.6.3.18)
>> >
>> > -Konqueror really is a memory hog although it seems to not be. It uses
>> > more memory on the same three tabs/sites test setup than firefox,
>> > although exmap even calculates the shared lib usage where it should have
>> > a great advantage. This is bad since Firefox has not nearly a as good kde
>> > integration.
>> >
>> > -Kopete takes too much memory. It has a total memory of between 20-24mb
>> > here, having 12mb heap:
>> > 85.80% (10,692,856B) (heap allocation functions) malloc/new/new[],
>> > --alloc- fns, etc.
>> > ->24.69% (3,077,240B) 0x4F67DCC: qMalloc(unsigned) (in
>> > /usr/lib/libQtCore.so.4.4.3)
>> >
>> > | ->07.87% (981,434B) 0x4FB1AB8: QString::realloc(int) (in
>> >
>> > /usr/lib/libQtCore.so.4.4.3)
>> > Don't know why, but I guess that could be better... Maybe it is due to
>> > the emoticons being cached...
>> >
>> > -Akonadi takes round about 30 mb. I just kill it if I need to. The always
>> > on startup message about migrating the standard ressources gets on my
>> > nerves, too, btw....
>> >
>> > -Amarok really uses between 60-70 mb on kubuntu here. This does not mean
>> > much as heaps seem to be generally larger on kubuntu for some reason. But
>> > 70 mb is really bad.
>> >
>> > I am happy to be able to use KDE4 on my systems now and I am looking
>> > forward to use 4.3/4.4. It is really the most advanced *nix desktop imo,
>> > so thx for your great work!
>> >
>> > Cheers,
>> > whilo
>>
>> the PS3 is slugghish because there are just 256mb of ram, and you
>> can't use the SPEs for general purpose, so it's just a single core PPE
>> with something like hyper threading
> it is even less. it is only round about 200mb. it still works. and you can now
> use the graphics memory as a fast swap space, which i do. so you can use it.
> you are right about cpu power though... hopefully the spes will work for
> graphics acceleration sometime in the future. but I'm ok with the current
> situation.
>>
>> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
>> >> unsubscribe <<
>
>
> --
> My blog: http://whilos.blogsite.org
>
> No brain - no headache!
>
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>
 
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