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<div class="moz-cite-prefix">Hi Janusz,<br>
<br>
Are you sure you are looking at the right VirtualBox process? At
least on *nix host systems both the VM selector GUI and the actual
VM processes are both called "VirtualBox".<br>
<br>
Also, are you sure you are not mixing virtual reservations in the
guest with actual allocated memory?<br>
<br>
In any case, what VirtualBox does, in the default case, is to
-not- allocate upfront the entire RAM you have configured for the
guest. It does it in a lazy fashion, as and when the guest touches
its memory. Windows guests normally on boot/shortly after scrub
its memory in some way while with other guests like Linux you can
observe the actual allocated memory of the guest growing over time
depending on the actual usage. The guest memory is allocated from
kernel space and mapped into the userland process.<br>
<br>
As for the CPU, we don't do anything special, we do however try to
play as nice as possible with the host scheduler interrupting
guest execution when required.<br>
<br>
Hope this helps,<br>
<br>
Regards,<br>
Ram.<br>
<br>
On 08/28/13 04:37 PM, Mgr. Janusz Chmiel wrote:<br>
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<blockquote cite="mid:521E0B37.2020500@seznam.cz" type="cite">
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<div class="moz-text-flowed" style="font-family: -moz-fixed;
font-size: 13px;" lang="x-unicode">Dear core developers, <br>
I have one big question on You. <br>
I Am wondering, why i can use whole virtual machine with Windows
XP SP3 and The process, VirtualBox.exe is allocating only 66 MB
after 4 hours of running. <br>
My XP virtual machine is containing standard XP installation and
Seamonkey WEB browser, this standalone process is allocating
more than 140 MB, so whole XP can allocate approximately 330 MB.
<br>
Does Virtualbox and its dependent modules allocating Windows
virtual memory by using special Kernel32.dll API calls? <br>
Or Virtualbox is using standalone temporary files or files to
save data? <br>
Because i Am wondering, why Yours virtualisation solution can
run for so long time without memory leaks and without system
slowdown. Even Windows XP, which runs inside virtual computer
can run for me for more than 12 hours of intesive work. <br>
<br>
Would You explain me this positive feature for me like A
advanced user? <br>
I know, that whole source code is public available, but this
complex C++ language code is too complex for me to understand
it, so i would like to hear The explanation from You like a
developer. <br>
So i could imagine, how yours amazing virtualisation tool work.
<br>
I hope, that somebody of us, who is engaged in The deep of C
source code of this project would give me The explanation. <br>
My last plea? <br>
Why Yours virtualisation tool so soft to CPU, that i can use it
for a long time and my CPU fan is working at The lovest speed? <br>
I love all this features, but i would like to know, why is it
working so smoothly? <br>
Thank You very much for Yours time, patience and for Yours
answers. <br>
<br>
</div>
<p class="" avgcert""="" color="#000000" align="left">Zpráva
neobsahuje viry.<br>
Zkontrolováno AVG - <a moz-do-not-send="true"
href="http://www.avg.cz">www.avg.cz</a><br>
Verze: 2013.0.3392 / Virová báze: 3211/6614 - Datum vydání:
27.8.2013</p>
<br>
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