[vfio-users] Nvidia glitches on Windows 10 guest

[Berillions]

You're right, I badly understood the use of Hugepage.

Like you say, 4096 is enough to use 4GB in my VM but unfortunatly with
this, i still have freeze, corruption in the VM ...

In resume :
- 4096 Hugepages + 2GB VM = good
- 4096 Hugepages + 4GB VM = bad

2016-06-21 19:58 GMT+02:00 Alex Williamson <alex.l.williamson at gmail.com>:

> On Tue, Jun 21, 2016 at 11:53 AM, Berillions <berillions at gmail.com> wrote:
>
>> When i said in my message "real 8Gb Memory Ram", it means that I have 2
>> slots each one which contain 4Gb Memory Ram.
>> "real 12Gb Memory Ram", it means that I have 3 slots each one which
>> contain 4Gb Memory Ram.
>>
>> And yes, i created Hugepages for the VM with the Debian Wiki (
>> https://wiki.debian.org/Hugepages).
>> For 2048Mb allocate to the VM, i set "vm.nr_hugepages" to 4096.
>>
>> But i can't set 8192 to "vm.nr_hugepages" and set 4096MB for the Guest, I
>> have not enough memory for the Host (I can use the host but if i launch
>> Virt-Manager + VM, 99% of Memory Ram is used so the host freeze)
>>
>
> You do realize that the default hugepage size on x86 is 2MB, right?  So
> you cannot allocate 8192 hugepages because that would be 16GB on your 12GB
> system.  At 4096, you already have enough hugepages to run an 8GB VM.
> Maybe you're seeing problems because you're making your poor system swap
> like mad while at the same time not even using all the hugepages you're
> allocating.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/vfio-users/attachments/20160621/0ed9b6c6/attachment.htm>