On 05.01.21 11:22, Liang Li wrote:
That‘s mostly already existing scheduling logic, no? (How many vms can I
put onto a specific machine eventually)
>>>
>>> It depends on how the scheduling component is designed. Yes, you can put
>>> 10 VMs with 4C8G(4CPU, 8G RAM) on a host and 20 VMs wit
On 05.01.21 03:14, Liang Li wrote:
> In our production environment, there are three main applications have such
> requirement, one is QEMU [creating a VM with SR-IOV passthrough device],
> anther other two are DPDK related applications, DPDK OVS and SPDK vhost,
> for best performanc
> Am 23.12.2020 um 13:12 schrieb Liang Li :
>
> On Wed, Dec 23, 2020 at 4:41 PM David Hildenbrand wrote:
>>
>> [...]
>>
I was rather saying that for security it's of little use IMHO.
Application/VM start up time might be improved by using huge pages (and
pre-zeroing these). Fre
[...]
>> I was rather saying that for security it's of little use IMHO.
>> Application/VM start up time might be improved by using huge pages (and
>> pre-zeroing these). Free page reporting might be improved by using
>> MADV_FREE instead of MADV_DONTNEED in the hypervisor.
>>
>>> this feature, abo
On Mon, Dec 21, 2020 at 8:25 AM Liang Li wrote:
>
> The first version can be found at: https://lkml.org/lkml/2020/4/12/42
>
> Zero out the page content usually happens when allocating pages with
> the flag of __GFP_ZERO, this is a time consuming operation, it makes
> the population of a large vma
On Mon, Dec 21, 2020 at 11:25:22AM -0500, Liang Li wrote:
> Creating a VM [64G RAM, 32 CPUs] with GPU passthrough
> =
> QEMU use 4K pages, THP is off
> round1 round2 round3
> w/o this patch:23.5s 24.7s 2
>
>>>
>>> Virtulization
>>> =
>>> Speed up VM creation and shorten guest boot time, especially for PCI
>>> SR-IOV device passthrough scenario. Compared with some of the para
>>> vitalization solutions, it is easy to deploy because it’s transparent
>>> to guest and can handle DMA proper
On 21.12.20 17:25, Liang Li wrote:
> The first version can be found at: https://lkml.org/lkml/2020/4/12/42
>
> Zero out the page content usually happens when allocating pages with
> the flag of __GFP_ZERO, this is a time consuming operation, it makes
> the population of a large vma area very slowl
