From: Peter Zijlstra <peterz@infradead.org>
To: "Huang, Ying" <ying.huang@intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Ingo Molnar <mingo@redhat.com>, Mel Gorman <mgorman@suse.de>,
Rik van Riel <riel@surriel.com>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
Tejun Heo <tj@kernel.org>, Dave Hansen <dave.hansen@intel.com>,
Tim Chen <tim.c.chen@intel.com>, Aubrey Li <aubrey.li@intel.com>
Subject: Re: [RFC] autonuma: Support to scan page table asynchronously
Date: Fri, 17 Apr 2020 12:06:33 +0200 [thread overview]
Message-ID: <20200417100633.GU20730@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <87o8rsxlws.fsf@yhuang-dev.intel.com>
On Thu, Apr 16, 2020 at 09:24:35AM +0800, Huang, Ying wrote:
> Peter Zijlstra <peterz@infradead.org> writes:
>
> > On Tue, Apr 14, 2020 at 01:06:46PM +0100, Mel Gorman wrote:
> >> While it's just an opinion, my preference would be to focus on reducing
> >> the cost and amount of scanning done -- particularly for threads.
> >
> > This; I really don't believe in those back-charging things, esp. since
> > not having cgroups or having multiple applications in a single cgroup is
> > a valid setup.
>
> Technically, it appears possible to back-charge the CPU time to the
> process/thread directly (not the cgroup).
I've yet to see a sane proposal there. What we're not going to do is
make regular task accounting more expensive than it already is.
next prev parent reply other threads:[~2020-04-17 10:06 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 8:19 Huang Ying
2020-04-14 12:06 ` Mel Gorman
2020-04-15 8:14 ` Huang, Ying
2020-04-17 7:05 ` SeongJae Park
2020-04-17 10:04 ` Peter Zijlstra
2020-04-17 10:21 ` SeongJae Park
2020-04-17 12:16 ` Mel Gorman
2020-04-17 12:21 ` Peter Zijlstra
2020-04-17 12:44 ` SeongJae Park
2020-04-17 14:46 ` Mel Gorman
2020-04-18 9:48 ` SeongJae Park
2020-04-20 2:32 ` Huang, Ying
2020-04-15 11:32 ` Peter Zijlstra
2020-04-16 1:24 ` Huang, Ying
2020-04-17 10:06 ` Peter Zijlstra [this message]
2020-04-20 3:26 ` Huang, Ying
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