On Thu, Jun 29, 2017 at 10:57:26AM -0700, Nick Terrell wrote:
> find_workspace() allocates up to num_online_cpus() + 1 workspaces.
> free_workspace() will only keep num_online_cpus() workspaces. When
> (de)compressing we will allocate num_online_cpus() + 1 workspaces, then
> free one, and repeat.
On Thu, Jun 29, 2017 at 10:57:26AM -0700, Nick Terrell wrote:
> The time it took to execute cp vmlinux /mnt/btrfs && sync
> dropped from 1.70s to 1.44s with lzo compression, and from 2.04s to 1.80s
> for zstd compression.
> - if (*free_ws < num_online_cpus()) {
> + if (*free_ws <=
find_workspace() allocates up to num_online_cpus() + 1 workspaces.
free_workspace() will only keep num_online_cpus() workspaces. When
(de)compressing we will allocate num_online_cpus() + 1 workspaces, then
free one, and repeat. Instead, we can just keep num_online_cpus() + 1
workspaces around, and
On Wed, Jun 28, 2017 at 08:01:51PM -0700, Nick Terrell wrote:
> > Is there a version I should be testing?
>
> Not yet, I'm working on v2 of the patch set, which will be ready soon.
>
> > I got a bunch of those:
> > [10170.448783] kworker/u8:6: page allocation stalls for 60720ms, order:0,
> >
> Is there a version I should be testing?
Not yet, I'm working on v2 of the patch set, which will be ready soon.
> I got a bunch of those:
> [10170.448783] kworker/u8:6: page allocation stalls for 60720ms, order:0,
> mode:0x14000c2(GFP_KERNEL|__GFP_HIGHMEM), nodemask=(null)
> [10170.448819]
