I thought you might be interested in some performance results, "hot
off the presses".
With DAX enabled, I see the following messages in the guest kernel
logs, which I assume means it is working:
[0.469364] EXT4-fs (pmem0): DAX enabled. Warning: EXPERIMENTAL, use at your
own risk
[
On Wed, May 18, 2016 at 03:04:52PM +0800, Xiao Guangrong wrote:
> On 05/17/2016 02:25 AM, Richard W.M. Jones wrote:
> >(a) How necessary is the ACPI dependency? We disable ACPI because it
> >is quite slow, adding something like 150-200ms to the boot process
> >(every millisecond counts for us!).
Hi Richard,
On 05/18/16 15:04, Xiao Guangrong wrote:
[..]
> >There are a few possible problems / questions I have:
> >
> >(a) How necessary is the ACPI dependency? We disable ACPI because it
> >is quite slow, adding something like 150-200ms to the boot process
> >(every millisecond counts for
Hi Rich,
On 05/17/2016 02:25 AM, Richard W.M. Jones wrote:
On Mon, May 16, 2016 at 09:53:36AM -0700, Stefan Hajnoczi wrote:
On Mon, May 16, 2016 at 04:04:01PM +0100, Richard W.M. Jones wrote:
I'm playing with ext4 and DAX.
I'm using:
-object
On Mon, May 16, 2016 at 04:04:01PM +0100, Richard W.M. Jones wrote:
> I'm playing with ext4 and DAX.
>
> I'm using:
>
> -object memory-backend-file,id=mem1,share,mem-path=/var/tmp/pmem,size=4G \
> -device nvdimm,memdev=mem1,id=nv1
>
> where /var/tmp/pmem is a 4 GB ext4 filesystem image (no
On Mon, May 16, 2016 at 09:53:36AM -0700, Stefan Hajnoczi wrote:
> On Mon, May 16, 2016 at 04:04:01PM +0100, Richard W.M. Jones wrote:
> > I'm playing with ext4 and DAX.
> >
> > I'm using:
> >
> > -object memory-backend-file,id=mem1,share,mem-path=/var/tmp/pmem,size=4G \
> > -device
On 05/16/2016 11:04 PM, Richard W.M. Jones wrote:
I'm playing with ext4 and DAX.
Thanks for your try, Rich! :)
I'm using:
-object memory-backend-file,id=mem1,share,mem-path=/var/tmp/pmem,size=4G \
-device nvdimm,memdev=mem1,id=nv1
where /var/tmp/pmem is a 4 GB ext4 filesystem
I'm playing with ext4 and DAX.
I'm using:
-object memory-backend-file,id=mem1,share,mem-path=/var/tmp/pmem,size=4G \
-device nvdimm,memdev=mem1,id=nv1
where /var/tmp/pmem is a 4 GB ext4 filesystem image (no partition
table). I can mount this in the guest using:
mount -o dax /dev/pmem0
