Re: [Xen-devel] maximum memory size allocated by _xmalloc

[Chulmin Kim <cmkim@xxxxxxxxxxxxxxxx>]

Though the issue has been written one month ago,
I post my own experience on it.

Unfortunately, it was not the matter of the requested mem size or 
xmalloc function.
The problem was due to the free memory scrubbing.

I set my xmalloc code in the middle of the bootup code of xen after the 
free memory scrubbing function.
But the placement was wrong.

After i relocated the code line before the scrubbing function,
it worked perfectly.

Thanks for your help!


2012-07-11 ìí 6:13, Chulmin Kim ì ê:
> Hi all,
>
> I'm currently inserting my own code to adjust the several existing memory
> ballooning works.
>
> To accomplish it, I manage some kind of statistics in Xen memory area.
>
> Using _xmalloc, I've allocated certain size of memory chunk for the data
> structure. ( I varied it from 10kb to 24 MB.)
>
> When the size is equal to 24 MB, xen won't boot anymore.  (stuck during the
> xmalloc, according to my debugging. _xmalloc returns NULL.)
> There was no problem when the size is below 12MB.
>
> Is there any limitation such as max memory size for _xmalloc?
>
> I suspected xen heap size, but, it is no longer adjustable. Right?
>
> I hope somebody can give me a clue.  Thanks.
>
>
>
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