On Wed, Dec 11, 2019 at 3:41 PM Jens Axboe <axboe@xxxxxxxxx> wrote:
>
> Here's what I did to reproduce:
Gaah. I have a fairly fast ssd (but it's "consumer fast" - Samsung 970
Pro - I'm assuming yours is a different class), but I encrypt my disk,
so I only get about 15k iops and I see kcyrptd in my profiles, not
kswapd.
I didn't even try to worry about RWF_UNCACHED or RWF_NOACCESS, since I
wanted to see the problem. But I think that with my setup, I can't
really see it just due to my IO being slow ;(
I do see xas_create and kswapd0, but it's 0.42%. I'm assuming it's the
very first signs of this problem, but it's certainly not all that
noticeable.
Linus
