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Re: Memory usage..
by Segedunum on Wednesday 26/Mar/2008, @15:48
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"Its funny how one incorrect and quickly redacted measurement can convince so many people. KDE 4 certainly does not take less memory than KDE 3, and I don't think that myth is doing anyone any favours."
Hmmmmmmmmmmmm. Does that mean that KDE 4 does more than KDE 3 and uses more memory, or that when comparing KDE 4 and KDE 3 doing the same things KDE 4 uses less memory. |
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Re: Memory usage..
by Leo S on Wednesday 26/Mar/2008, @22:26
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KDE4 uses more memory period.
The impact depends largely on the screen size. On my EeePC, an empty KDE4 session uses about 10mb more than an empty KDE3 session. On my work comp (1680x1050 display), the difference is much larger (~50 mb IIRC).
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Re: Memory usage..
by Segedunum on Thursday 27/Mar/2008, @14:27
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"On my EeePC, an empty KDE4 session uses about 10mb more than an empty KDE3 session. On my work comp (1680x1050 display), the difference is much larger (~50 mb IIRC)."
Unfortunately, measuring memory usagelike that, probably by just looking at top, is pretty meaningless.
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Re: Memory usage..
by Anon on Thursday 27/Mar/2008, @15:20
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The "-/+ buffers/cache" row in the output of free -m is pretty meaningful, actually - assuming no swap is being used.
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Re: Memory usage..
by Leo S on Thursday 27/Mar/2008, @15:36
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It is not meaningless at all, as long as you look at the line that subtracts the buffers/cache.
In fact, this is the most meaningful measure of memory for the user, because as a user I'm mostly interested in "How much memory do I have left for applications", and measuring total used memory gives that answer, without having to worry about complexities like how much of a process's used memory is shared.
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Re: Memory usage..
by Segednum on Saturday 29/Mar/2008, @15:55
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"It is not meaningless at all, as long as you look at the line that subtracts the buffers/cache.
In fact, this is the most meaningful measure of memory for the user"
It doesn't means what you think it means at all. Read this:
http://ktown.kde.org/~seli/memory/desktop_benchmark.html
The readings for top don't give you any real indication of your memory usage at all.
"In fact, this is the most meaningful measure of memory for the user, because as a user I'm mostly interested in "How much memory do I have left for applications""
You're not going to get anything accurate from top or free. This has been discussed before.
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Re: Memory usage..
by xyzzzz on Sunday 30/Mar/2008, @06:53
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"http://ktown.kde.org/~seli/memory/desktop_benchmark.html"
I wonder whether the higher memory consumption of GNOME is simply caused by GTK's double buffering and not by out-of-process applets etc...
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Re: Memory usage..
by Anon on Sunday 30/Mar/2008, @06:59
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GTK doesn't double-buffer, IIRC. Qt4 does, though, with a correspondingly large increase in memory consumption.
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Re: Memory usage..
by xyzzzz on Sunday 30/Mar/2008, @07:22
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"GTK doesn't double-buffer"
I thought it does double buffering since GTK+ 2.0 (released 10 years ago)?
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Re: Memory usage..
by Leo S on Sunday 30/Mar/2008, @12:19
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I'm well aware of this page and have read it.
What you don't understand is that I'm not even remotely interested in exact memory usage. I don't care if the value that free reports is +- 10%. Free may not be the most accurate, but it's not random. The values correlate with memory usage, and it's pretty clear that KDE4 uses more. I could remeasure with exmap, but I would get the same conclusion so I really don't care.
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