From: Reinette Chatre <reinette.chatre@intel.com>
To: Babu Moger <babu.moger@amd.com>, <corbet@lwn.net>,
<tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>
Cc: <fenghua.yu@intel.com>, <dave.hansen@linux.intel.com>,
<x86@kernel.org>, <hpa@zytor.com>, <paulmck@kernel.org>,
<akpm@linux-foundation.org>, <quic_neeraju@quicinc.com>,
<rdunlap@infradead.org>, <damien.lemoal@opensource.wdc.com>,
<songmuchun@bytedance.com>, <peterz@infradead.org>,
<jpoimboe@kernel.org>, <pbonzini@redhat.com>,
<chang.seok.bae@intel.com>, <pawan.kumar.gupta@linux.intel.com>,
<jmattson@google.com>, <daniel.sneddon@linux.intel.com>,
<sandipan.das@amd.com>, <tony.luck@intel.com>,
<james.morse@arm.com>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <bagasdotme@gmail.com>,
<eranian@google.com>
Subject: Re: [PATCH v8 13/13] Documentation/x86: Update resctrl.rst for new features
Date: Tue, 22 Nov 2022 16:26:05 -0800 [thread overview]
Message-ID: <d757b376-3e36-da95-b69c-21390a0c92f5@intel.com> (raw)
In-Reply-To: <166759208987.3281208.3199784740546752454.stgit@bmoger-ubuntu>
Hi Babu,
On 11/4/2022 1:01 PM, Babu Moger wrote:
...
> @@ -464,6 +539,26 @@ Memory bandwidth domain is L3 cache.
>
> MB:<cache_id0>=bw_MBps0;<cache_id1>=bw_MBps1;...
>
> +Slow Memory Bandwidth Allocation (SMBA)
> +---------------------------------------
> +AMD hardware support Slow Memory Bandwidth Allocation (SMBA) feature.
How about
AMD hardware supports the Slow Memory Bandwidth Allocation (SMBA) feature.
or
AMD hardware supports Slow Memory Bandwidth Allocation (SMBA).
> +Currently, CXL.memory is the only supported "slow" memory device.
What does "Currently" mean here? If there is a plan for changes, could
that be shared? Otherwise maybe just remove it: "CXL.memory is the only
supported "slow" memory device."
> +With the support of SMBA, the hardware enables bandwidth allocation
> +on the slow memory devices. If there are multiple such devices in the
> +system, the throttling logic groups all the slow sources together
> +and applies the limit on them as a whole.
> +
> +The presence of SMBA (with CXL.memory) is independent of slow memory
> +devices presence. If there is no such devices on the system, then
Maybe "is no such device" or "are no such devices"?
> +setting the configuring SMBA will have no impact on the performance
"setting the configuring SMBA" is hard to parse. How about just
"configuring SMBA"?
Reinette
next prev parent reply other threads:[~2022-11-23 0:26 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-04 19:59 [PATCH v8 00/13] Support for AMD QoS " Babu Moger
2022-11-04 19:59 ` [PATCH v8 01/13] x86/cpufeatures: Add Slow Memory Bandwidth Allocation feature flag Babu Moger
2022-11-23 18:21 ` Yu, Fenghua
2022-11-23 23:09 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 02/13] x86/resctrl: Add a new resource type RDT_RESOURCE_SMBA Babu Moger
2022-11-23 0:04 ` Reinette Chatre
2022-11-23 15:13 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 03/13] x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag Babu Moger
2022-11-23 0:09 ` Reinette Chatre
2022-11-23 15:16 ` Moger, Babu
2022-11-23 18:17 ` Yu, Fenghua
2022-11-23 23:06 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 04/13] x86/resctrl: Include new features in command line options Babu Moger
2022-11-23 18:26 ` Yu, Fenghua
2022-11-23 23:10 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 05/13] x86/resctrl: Detect and configure Slow Memory Bandwidth Allocation Babu Moger
2022-11-23 0:12 ` Reinette Chatre
2022-11-23 15:17 ` Moger, Babu
2022-11-30 18:43 ` Moger, Babu
2022-11-30 20:07 ` Reinette Chatre
2022-11-30 20:40 ` Moger, Babu
2022-12-01 0:35 ` Reinette Chatre
2022-12-01 13:56 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 06/13] x86/resctrl: Remove the init attribute for rdt_cpu_has() Babu Moger
2022-11-23 0:13 ` Reinette Chatre
2022-11-23 17:48 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 07/13] x86/resctrl: Introduce data structure to support monitor configuration Babu Moger
2022-11-23 0:14 ` Reinette Chatre
2022-11-23 18:23 ` Moger, Babu
2022-11-23 19:05 ` Reinette Chatre
2022-11-23 21:46 ` Moger, Babu
2022-11-04 20:00 ` [PATCH v8 08/13] x86/resctrl: Add sysfs interface to read mbm_total_bytes_config Babu Moger
2022-11-23 0:19 ` Reinette Chatre
2022-11-23 18:35 ` Moger, Babu
2022-11-23 22:27 ` Reinette Chatre
2022-11-23 22:55 ` Moger, Babu
2022-11-04 20:01 ` [PATCH v8 09/13] x86/resctrl: Add sysfs interface to read mbm_local_bytes_config Babu Moger
2022-11-04 20:01 ` [PATCH v8 10/13] x86/resctrl: Add sysfs interface to write mbm_total_bytes_config Babu Moger
2022-11-07 10:21 ` Peter Newman
2022-11-07 18:50 ` Moger, Babu
2022-11-07 19:00 ` Moger, Babu
2022-11-22 23:43 ` Reinette Chatre
2022-11-23 21:44 ` Moger, Babu
2022-11-23 22:22 ` Reinette Chatre
2022-11-28 16:01 ` Moger, Babu
2022-11-23 0:22 ` Reinette Chatre
2022-11-23 22:44 ` Moger, Babu
2022-12-07 17:20 ` James Morse
2022-12-07 17:24 ` James Morse
2022-12-08 0:02 ` Moger, Babu
2022-12-13 17:55 ` James Morse
2022-12-13 23:46 ` Moger, Babu
2022-11-04 20:01 ` [PATCH v8 11/13] x86/resctrl: Add sysfs interface to write mbm_local_bytes_config Babu Moger
2022-11-04 20:01 ` [PATCH v8 12/13] x86/resctrl: Replace smp_call_function_many() with on_each_cpu_mask() Babu Moger
2022-11-04 20:01 ` [PATCH v8 13/13] Documentation/x86: Update resctrl.rst for new features Babu Moger
2022-11-23 0:26 ` Reinette Chatre [this message]
2022-11-23 23:02 ` Moger, Babu
2022-11-15 20:50 ` [PATCH v8 00/13] Support for AMD QoS " Moger, Babu
2022-11-15 21:07 ` Reinette Chatre
2022-11-15 21:34 ` Moger, Babu
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