linux-kernel - Re: [iov_iter] 9bd0e337c6: will-it-scale.per_process

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Date:   Mon, 07 Dec 2020 13:20:19 +0000
From:   David Howells <dhowells@...hat.com>
To:     Oliver Sang <oliver.sang@...el.com>
Cc:     dhowells@...hat.com, lkp@...ts.01.org, lkp@...el.com,
        ying.huang@...el.com, feng.tang@...el.com, zhengjun.xing@...el.com,
        Pavel Begunkov <asml.silence@...il.com>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [iov_iter] 9bd0e337c6: will-it-scale.per_process_ops -4.8% regression

Oliver Sang <oliver.sang@...el.com> wrote:

> > Out of interest, would it be possible for you to run this on the tail of the
> > series on the same hardware?
> 
> sorry for late. below is the result adding the tail of the series:
> * ded69a6991fe0 (linux-review/David-Howells/RFC-iov_iter-Switch-to-using-an-ops-table/20201121-222344) iov_iter: Remove iterate_all_kinds() and iterate_and_advance()

Thanks very much for doing that!

David