On Mon, 2020-10-05 at 13:32 -0400, Rik van Riel wrote:
> On Tue, 2020-09-22 at 10:12 -0700, Andrew Morton wrote:
> > On Mon, 21 Sep 2020 22:01:46 -0400 Rik van Riel
> > wrote:
> > Any quantitative testing results?
>
> I have test results with a real workload now.
>
> Without this patch, enablin
On Tue, 2020-09-22 at 10:12 -0700, Andrew Morton wrote:
> On Mon, 21 Sep 2020 22:01:46 -0400 Rik van Riel
> wrote:
>
> > Both with frontswap/zswap, and with some extremely fast IO devices,
> > swap IO will be done before the "asynchronous" swap_readpage() call
> > has returned.
> >
> > In that c
On Mon, 21 Sep 2020 22:01:46 -0400 Rik van Riel wrote:
> Both with frontswap/zswap, and with some extremely fast IO devices,
> swap IO will be done before the "asynchronous" swap_readpage() call
> has returned.
>
> In that case, doing swap readahead only wastes memory, increases
> latency, and i
Both with frontswap/zswap, and with some extremely fast IO devices,
swap IO will be done before the "asynchronous" swap_readpage() call
has returned.
In that case, doing swap readahead only wastes memory, increases
latency, and increases the chances of needing to evict something more
useful from m
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