linux-kernel - Re: Detecting page cache trashing state

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Message-ID: <8be3f051-0858-c014-96a7-a1903f063980@cisco.com>
Date:   Wed, 25 Oct 2017 09:53:35 -0700
From:   Daniel Walker <danielwa@...co.com>
To:     "Ruslan Ruslichenko -X (rruslich - GLOBALLOGIC INC at Cisco)" 
        <rruslich@...co.com>, Johannes Weiner <hannes@...xchg.org>,
        Taras Kondratiuk <takondra@...co.com>
Cc:     Michal Hocko <mhocko@...nel.org>, linux-mm@...ck.org,
        xe-linux-external@...co.com, linux-kernel@...r.kernel.org
Subject: Re: Detecting page cache trashing state

On 09/28/2017 08:49 AM, Ruslan Ruslichenko -X (rruslich - GLOBALLOGIC 
INC at Cisco) wrote:
> Hi Johannes,
>
> Hopefully I was able to rebase the patch on top v4.9.26 (latest 
> supported version by us right now)
> and test a bit.
> The overall idea definitely looks promising, although I have one 
> question on usage.
> Will it be able to account the time which processes spend on handling 
> major page faults
> (including fs and iowait time) of refaulting page?

Johannes, did you get a chance to review the changes from Ruslan ?

Daniel