On 9/2/22 2:05 PM, Kent Overstreet wrote:

On Fri, Sep 02, 2022 at 01:53:53PM -0600, Jens Axboe wrote:

quoted

I've complained about memcg accounting before, the slowness of it is why
io_uring works around it by caching. Anything we account we try NOT do
in the fast path because of it, the slowdown is considerable.

I'm with you on that, it definitely raises an eyebrow.

quoted

You care about efficiency now? I thought that was relegated to
irrelevant 10M IOPS cases.

I always did, it's just not the only thing I care about.

It's not the only thing anyone cares about.

-- 
Jens Axboe