From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Aaron Lu <aaron.lu@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Song Liu <song@kernel.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC PATCH 0/4] x86/mm/cpa: merge small mappings whenever possible
Date: Tue, 9 Aug 2022 20:56:21 +0300 [thread overview]
Message-ID: <20220809175621.qq4ksi6zzqpon7e6@box> (raw)
In-Reply-To: <43c610f9-8671-519c-108f-9996e219c249@intel.com>
On Tue, Aug 09, 2022 at 10:58:18PM +0800, Aaron Lu wrote:
> Hi Kirill,
>
> Thanks a lot for the feedback.
>
> On 8/9/2022 6:04 PM, Kirill A. Shutemov wrote:
> > On Mon, Aug 08, 2022 at 10:56:45PM +0800, Aaron Lu wrote:
> >> This is an early RFC. While all reviews are welcome, reviewing this code
> >> now will be a waste of time for the x86 subsystem maintainers. I would,
> >> however, appreciate a preliminary review from the folks on the to and cc
> >> list. I'm posting it to the list in case anyone else is interested in
> >> seeing this early version.
> >
> > Last time[1] I tried to merge pages back in direct mapping it lead to
> > substantial performance regression for some workloads. I cannot find the
> > report right now, but I remember it was something graphics related.
> >
>
> Do you happen to remember the workload name? I can try running it.
No, sorry. As I said, I tried to find the report, but failed.
--
Kiryl Shutsemau / Kirill A. Shutemov
next prev parent reply other threads:[~2022-08-09 17:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-08 14:56 [RFC PATCH 0/4] x86/mm/cpa: merge small mappings whenever possible Aaron Lu
2022-08-08 14:56 ` [RFC PATCH 1/4] x86/mm/cpa: restore global bit when page is present Aaron Lu
2022-08-11 5:21 ` Hyeonggon Yoo
2022-08-11 8:16 ` Lu, Aaron
2022-08-11 11:30 ` Hyeonggon Yoo
2022-08-11 12:28 ` Aaron Lu
2022-08-08 14:56 ` [RFC PATCH 2/4] x86/mm/cpa: merge splitted direct mapping when possible Aaron Lu
2022-08-08 14:56 ` [RFC PATCH 3/4] x86/mm/cpa: add merge event counter Aaron Lu
2022-08-08 14:56 ` [TEST NOT_FOR_MERGE 4/4] x86/mm/cpa: add a test interface to split direct map Aaron Lu
2022-08-09 10:04 ` [RFC PATCH 0/4] x86/mm/cpa: merge small mappings whenever possible Kirill A. Shutemov
2022-08-09 14:58 ` Aaron Lu
2022-08-09 17:56 ` Kirill A. Shutemov [this message]
2022-08-11 4:50 ` Hyeonggon Yoo
2022-08-11 7:50 ` Lu, Aaron
2022-08-13 16:05 ` Mike Rapoport
2022-08-16 6:33 ` Aaron Lu
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