(Kubuntu 10.04) Memory usage unreasonable high?

[Tomas Gustavsson]

2010/1/15 Tomas Gustavsson <tomplast at gmail.com>

> 2010/1/15 Jonathan Thomas <echidnaman at gmail.com>
>
> On Fri 15 Jan 2010 12:58:39 pm Tomas Gustavsson wrote:
>> > Is it just me or is the memory usage of Kubuntu 10.04
>> unreasonable
>> > high? I know that it's still in the alpha stages but it seems
>> a little
>> > too high here. If I disregard Konqueror from the total memory
>> usage
>> > it's still around 750 MiB (stabilised to 720 after 10 mins or
>> so), out
>> > of 2.9GiB according to ksysguard.
>>
>> Linux uses unused memory as a cache, so high or near-full RAM
>> usage is a sign that the kernel is doing it's job properly and
>> is efficiently using your RAM to make your applications faster.
>> If an application needs more RAM, it will dump some of the cache
>> and the application will be able to use this newly-freed RAM.
>>
>> So, don't take the RAM usage numbers you see to mean that
>> Kubuntu is taking an unholy amount of memory. There's no point
>> in having memory sit around doing nothing, and if an application
>> needs more RAM the kernel will simply use less for the cache and
>> give the application more RAM when it requests it.
>>
>> >
>> > I know that KDE may be more for "power users" then GNOME is,
>> but still
>> > something must be wrong if Kubuntu draws almost 3 times the
>> memory
>> > compared to Ubuntu. Or is it that KDE somehow reserves more
>> memory
>> > then GNOME and doesn't actually uses 750MiB of my memory?
>> >
>> > There's no doubt in my mind that Kubuntu is becoming a better
>> every
>> > day, but there must be a healthy balance between the resource
>> usage
>> > and the functionalities.
>>
>> GNOME behaves this way in regards to memory usage too, but due
>> to differences in every single tool ever created to view RAM
>> usage, numbers are often different between all the tools, and
>> can be quite a bit misleading. KInfoCenter may help a bit here,
>> as it's Memory section gives details about how memory is divided
>> up into stuff that applications are using, stuff the system is
>> using for caching, etc.
>>
>> Hope this helps,
>> Jonathan Thomas
>>
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>
> So are you saying that there ain't any practical way of knowing how much
> memory an application is using? And is it possible somehow to hide memory
> from the system? Let's assume that I wanna try and see how the system
> behaves with just 512 MiB of memory or so?
>
> Sorry I missed that about KInfoCenter *embarred*. I need to slow down here
:p
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