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xen-users
Re: [Xen-users] [XCP]: RC1 of XCP 0.5 available for testing
В Птн, 11/06/2010 в 21:27 +0100, Dave Scott пишет:
> http://www.xen.org/products/cloud_source_0.5.html
>
> XCP-0.5 is intended to be a *stable* release, suitable for long-term
> production use.
> Please download this release candidate and give it a thorough workout!
>
I found third (on my count) bug:
If we set up VM memory limits like this (on shutdowned machine):
xe vm-memory-static-range-set max=1048MiB min=96MiB vm=test
xe vm-memory-dynamic-range-set max=1048MiB min=96MiB vm=test
xe vm-memory-target-set vm=nonballoon target=110MiB
... and start VM. We found it take about 96Mb of RAM.
And if we starts to change it with xe vm-memory-target-set command, we
can increase, but can not cut memory down until about 230Mb (from 500 to
300 - ok, from 300 to 150 - no).
I thinks this have some relation with code in in
drivers/xen/balloon/balloon.c:
static unsigned long minimum_target(void)
...
if (max_pfn < MB2PAGES(128))
min_pages = MB2PAGES(8) + (max_pfn >> 1);
else if (max_pfn < MB2PAGES(512))
min_pages = MB2PAGES(40) + (max_pfn >> 2);
else if (max_pfn < MB2PAGES(2048))
min_pages = MB2PAGES(104) + (max_pfn >> 3);
else
min_pages = MB2PAGES(296) + (max_pfn >> 5);
...
I think, those numbers are unreasonable (especially around 2Gb limit).
---
wBR, George.
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