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From: Tim Chen <tim.c.chen@linux.intel.com>
To: "Song Bao Hua (Barry Song)" <song.bao.hua@hisilicon.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Morten Rasmussen <morten.rasmussen@arm.com>
Cc: "valentin.schneider@arm.com" <valentin.schneider@arm.com>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"will@kernel.org" <will@kernel.org>,
	"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
	"vincent.guittot@linaro.org" <vincent.guittot@linaro.org>,
	"lenb@kernel.org" <lenb@kernel.org>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	Jonathan Cameron <jonathan.cameron@huawei.com>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"peterz@infradead.org" <peterz@infradead.org>,
	"juri.lelli@redhat.com" <juri.lelli@redhat.com>,
	"rostedt@goodmis.org" <rostedt@goodmis.org>,
	"bsegall@google.com" <bsegall@google.com>,
	"mgorman@suse.de" <mgorman@suse.de>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"sudeep.holla@arm.com" <sudeep.holla@arm.com>,
	"aubrey.li@linux.intel.com" <aubrey.li@linux.intel.com>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linuxarm@openeuler.org" <linuxarm@openeuler.org>,
	"xuwei (O)" <xuwei5@huawei.com>,
	"Zengtao (B)" <prime.zeng@hisilicon.com>,
	"tiantao (H)" <tiantao6@hisilicon.com>,
	Guodong Xu <guodong.xu@linaro.org>,
	yangyicong <yangyicong@huawei.com>
Subject: Re: [RFC PATCH v3 0/2] scheduler: expose the topology of clusters and add cluster scheduler
Date: Tue, 13 Apr 2021 12:00:27 -0700	[thread overview]
Message-ID: <6e067798-5585-5169-38fc-77e173831af5@linux.intel.com> (raw)
In-Reply-To: <9201b56a29dd4dacb7d9fcbf307ca5ff@hisilicon.com>



On 4/13/21 3:45 AM, Song Bao Hua (Barry Song) wrote:
> 
> 
>
> Right now in the main cases of using wake_affine to achieve
> better performance, processes are actually bound within one
> numa which is also a LLC in kunpeng920. 
> 
> Probably LLC=NUMA is also true for X86 Jacobsville, Tim?

In general for x86, LLC is partitioned at the sub-numa cluster level.  
LLC could be divided between sub-numa cluster within a NUMA node.
That said, for Jacobsville, we don't have sub-numa clusters
so LLC=NUMA is true for that platform. 

Tim

WARNING: multiple messages have this Message-ID (diff)
From: Tim Chen <tim.c.chen@linux.intel.com>
To: "Song Bao Hua (Barry Song)" <song.bao.hua@hisilicon.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Morten Rasmussen <morten.rasmussen@arm.com>
Cc: "valentin.schneider@arm.com" <valentin.schneider@arm.com>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"will@kernel.org" <will@kernel.org>,
	"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
	"vincent.guittot@linaro.org" <vincent.guittot@linaro.org>,
	"lenb@kernel.org" <lenb@kernel.org>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	Jonathan Cameron <jonathan.cameron@huawei.com>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"peterz@infradead.org" <peterz@infradead.org>,
	"juri.lelli@redhat.com" <juri.lelli@redhat.com>,
	"rostedt@goodmis.org" <rostedt@goodmis.org>,
	"bsegall@google.com" <bsegall@google.com>,
	"mgorman@suse.de" <mgorman@suse.de>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"sudeep.holla@arm.com" <sudeep.holla@arm.com>,
	"aubrey.li@linux.intel.com" <aubrey.li@linux.intel.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linuxarm@openeuler.org" <linuxarm@openeuler.org>,
	"xuwei (O)" <xuwei5@huawei.com>,
	"Zengtao (B)" <prime.zeng@hisilicon.com>,
	"tiantao (H)" <tiantao6@hisilicon.com>,
	Guodong Xu <guodong.xu@linaro.org>,
	yangyicong <yangyicong@huawei.com>
Subject: Re: [RFC PATCH v3 0/2] scheduler: expose the topology of clusters and add cluster scheduler
Date: Tue, 13 Apr 2021 12:00:27 -0700	[thread overview]
Message-ID: <6e067798-5585-5169-38fc-77e173831af5@linux.intel.com> (raw)
In-Reply-To: <9201b56a29dd4dacb7d9fcbf307ca5ff@hisilicon.com>



On 4/13/21 3:45 AM, Song Bao Hua (Barry Song) wrote:
> 
> 
>
> Right now in the main cases of using wake_affine to achieve
> better performance, processes are actually bound within one
> numa which is also a LLC in kunpeng920. 
> 
> Probably LLC=NUMA is also true for X86 Jacobsville, Tim?

In general for x86, LLC is partitioned at the sub-numa cluster level.  
LLC could be divided between sub-numa cluster within a NUMA node.
That said, for Jacobsville, we don't have sub-numa clusters
so LLC=NUMA is true for that platform. 

Tim

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-04-13 19:00 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-06  8:30 [RFC PATCH v3 0/2] scheduler: expose the topology of clusters and add cluster scheduler Barry Song
2021-01-06  8:30 ` Barry Song
2021-01-06  8:30 ` [RFC PATCH v3 1/2] topology: Represent clusters of CPUs within a die Barry Song
2021-01-06  8:30   ` Barry Song
2021-02-09 22:48   ` Masayoshi Mizuma
2021-02-09 22:48     ` Masayoshi Mizuma
2021-01-06  8:30 ` [RFC PATCH v3 2/2] scheduler: add scheduler level for clusters Barry Song
2021-01-06  8:30   ` Barry Song
2021-01-06 10:14   ` kernel test robot
2021-01-06 16:29   ` Vincent Guittot
2021-01-06 16:29     ` Vincent Guittot
2021-01-06 20:09     ` Song Bao Hua (Barry Song)
2021-01-06 20:09       ` Song Bao Hua (Barry Song)
2021-01-07 23:16 ` [RFC PATCH v3 0/2] scheduler: expose the topology of clusters and add cluster scheduler Tim Chen
2021-01-07 23:16   ` Tim Chen
2021-01-08 15:12   ` Morten Rasmussen
2021-01-08 15:12     ` Morten Rasmussen
2021-01-08 20:22     ` Tim Chen
2021-01-08 20:22       ` Tim Chen
2021-01-11  9:28       ` Morten Rasmussen
2021-01-11  9:28         ` Morten Rasmussen
2021-01-12 11:00         ` Dietmar Eggemann
2021-01-12 11:00           ` Dietmar Eggemann
2021-01-25 10:50           ` Song Bao Hua (Barry Song)
2021-01-25 10:50             ` Song Bao Hua (Barry Song)
2021-01-26 11:02             ` Dietmar Eggemann
2021-01-26 11:02               ` Dietmar Eggemann
2021-04-13 10:45           ` Song Bao Hua (Barry Song)
2021-04-13 10:45             ` Song Bao Hua (Barry Song)
2021-04-13 19:00             ` Tim Chen [this message]
2021-04-13 19:00               ` Tim Chen
2021-01-08 21:30     ` Song Bao Hua (Barry Song)
2021-01-08 21:30       ` Song Bao Hua (Barry Song)
2021-01-12 12:53       ` Dietmar Eggemann
2021-01-12 12:53         ` Dietmar Eggemann
2021-01-25 11:12         ` Song Bao Hua (Barry Song)
2021-01-25 11:12           ` Song Bao Hua (Barry Song)
2021-02-03 11:32   ` Song Bao Hua (Barry Song)
2021-02-03 11:32     ` Song Bao Hua (Barry Song)
2021-02-16 18:04     ` Tim Chen
2021-02-16 18:04       ` Tim Chen

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