On Thu, 20 Mar 2025 at 20:15, Fabiano Rosas wrote:
> Technically both can happen. But that would just be the case of
> file:fdset migration which requires an extra fd for O_DIRECT. So
> "multiple" in the usual sense of "more is better" is only
> fd-per-thread. IOW, using multiple fds is an impleme
Prasad Pandit writes:
> On Thu, 20 Mar 2025 at 20:15, Fabiano Rosas wrote:
>> Technically both can happen. But that would just be the case of
>> file:fdset migration which requires an extra fd for O_DIRECT. So
>> "multiple" in the usual sense of "more is better" is only
>> fd-per-thread. IOW, us
Peter Xu writes:
> On Thu, Mar 20, 2025 at 11:45:29AM -0300, Fabiano Rosas wrote:
>> There's a bunch of other issues as well:
>>
>> - no clear distinction between what should go in the header and what
>> should go in the packet.
>>
>> - the header taking up one slot in the iov, which should i
Hi,
On Fri, 21 Mar 2025 at 19:34, Fabiano Rosas wrote:
> Well, I can't speak for everyone, of course, but generally the less
> layers on top of the object of your work the better.
* Yes, true.
> There are several ways of accessing QMP, some examples I have lying
> around:
>
> ==
> $QEMU ... -
Prasad Pandit writes:
> On Tue, 11 Mar 2025 at 00:59, Fabiano Rosas wrote:
>> Peter Xu writes:
>> > To me, this is a fairly important question to ask. Fundamentally, the very
>> > initial question is why do we need periodic flush and sync at all. It's
>> > because we want to make sure new ver
On Thu, Mar 20, 2025 at 11:45:29AM -0300, Fabiano Rosas wrote:
> There's a bunch of other issues as well:
>
> - no clear distinction between what should go in the header and what
> should go in the packet.
>
> - the header taking up one slot in the iov, which should in theory be
> responsibil
Prasad Pandit writes:
> Hello Fabiano,
>
> * First big thank you for starting/writing this document. It is a
> great resource.
>
> On Fri, 7 Mar 2025 at 19:13, Fabiano Rosas wrote:
>> +++ b/docs/devel/migration/multifd.rst
>> @@ -0,0 +1,254 @@
>> +Multifd
>> +Multifd is the name given for the mi
On Tue, 11 Mar 2025 at 00:59, Fabiano Rosas wrote:
> Peter Xu writes:
> > To me, this is a fairly important question to ask. Fundamentally, the very
> > initial question is why do we need periodic flush and sync at all. It's
> > because we want to make sure new version of pages to land later th
Hello Fabiano,
* First big thank you for starting/writing this document. It is a
great resource.
On Fri, 7 Mar 2025 at 19:13, Fabiano Rosas wrote:
> +++ b/docs/devel/migration/multifd.rst
> @@ -0,0 +1,254 @@
> +Multifd
> +Multifd is the name given for the migration capability that enables
> +dat
Peter Xu writes:
> On Fri, Mar 07, 2025 at 04:06:17PM -0300, Fabiano Rosas wrote:
>> > I never tried vsock, would it be used in any use case?
>> >
>>
>> I don't know, I'm going by what's in the code.
>>
>> > It seems to be introduced by accident in 72a8192e225cea, but I'm not sure.
>> > Maybe t
On Mon, Mar 10, 2025 at 11:24:15AM -0300, Fabiano Rosas wrote:
> Peter Xu writes:
>
> > On Fri, Mar 07, 2025 at 04:06:17PM -0300, Fabiano Rosas wrote:
> >> > I never tried vsock, would it be used in any use case?
> >> >
> >>
> >> I don't know, I'm going by what's in the code.
> >>
> >> > It see
Peter Xu writes:
> On Mon, Mar 10, 2025 at 11:24:15AM -0300, Fabiano Rosas wrote:
>> Peter Xu writes:
>>
>> > On Fri, Mar 07, 2025 at 04:06:17PM -0300, Fabiano Rosas wrote:
>> >> > I never tried vsock, would it be used in any use case?
>> >> >
>> >>
>> >> I don't know, I'm going by what's in t
On Fri, Mar 07, 2025 at 10:42:02AM -0300, Fabiano Rosas wrote:
> There's currently no documentation for multifd, we can at least
> provide an overview of the feature.
We missed this for a long time indeed..
>
> Signed-off-by: Fabiano Rosas
> ---
> Keep in mind the feature grew organically over
On Fri, Mar 07, 2025 at 04:06:17PM -0300, Fabiano Rosas wrote:
> > I never tried vsock, would it be used in any use case?
> >
>
> I don't know, I'm going by what's in the code.
>
> > It seems to be introduced by accident in 72a8192e225cea, but I'm not sure.
> > Maybe there's something I missed.
>
Peter Xu writes:
> On Fri, Mar 07, 2025 at 10:42:02AM -0300, Fabiano Rosas wrote:
>> There's currently no documentation for multifd, we can at least
>> provide an overview of the feature.
>
> We missed this for a long time indeed..
>
>>
>> Signed-off-by: Fabiano Rosas
>> ---
>> Keep in mind the
There's currently no documentation for multifd, we can at least
provide an overview of the feature.
Signed-off-by: Fabiano Rosas
---
Keep in mind the feature grew organically over the years and it has
had bugs that required reinventing some concepts, specially on the
sync part, so there's still s
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