ACK: [PATCH] UBUNTU: [Config] Switch from DECOMP_SINGLE to DECOMP_MULTI_PERCPU

[Andrea Righi]

On Tue, Sep 06, 2022 at 02:43:20PM +0100, Dimitri John Ledkov wrote:
> Hi,
> 
> On Mon, 29 Aug 2022 at 08:07, Andrea Righi <andrea.righi at canonical.com> wrote:
> >
> > On Fri, Aug 26, 2022 at 03:31:28PM +0100, Dimitri John Ledkov wrote:
> > > BugLink: https://bugs.launchpad.net/bugs/1980861
> > >
> > > Overall MULTI_PERCPU has similar or better performance on the wide
> > > range of instance types and squashfs filesystems.
> > >
> > > Signed-off-by: Dimitri John Ledkov <dimitri.ledkov at canonical.com>
> >
> > How about memory usage? Have we done any test to measure the memory
> > footprint after this change?
> >
> > Considering that snap is using squashfs and snap is pretty much
> > everywhere nowdays, I was wondering if this change may trigger potential
> > OOM conditions in some small cloud instances that we support (i.e., on
> > AWS) or small systems in general.
> >
> 
> We have tested this change on a variety of instance types, in a
> variety of clouds. Including tiny, regular and large instance types.
> 
> Generally, there is some small increase in memory usage, but we were
> unable to trigger OOM conditions. Specifically, because small RAM
> systems typically also have small CPU core count as well, resulting in
> very negligible positive or negative impact on them.

Thanks, it makes sense to me. Therefore,

Acked-by: Andrea Righi <andrea.righi at canonical.com>