From: Bruce Richardson <bruce.richardson@intel.com>
To: Wathsala Wathawana Vithanage <wathsala.vithanage@arm.com>
Cc: "Varghese, Vipin" <vipin.varghese@amd.com>,
"ferruh.yigit@amd.com" <ferruh.yigit@amd.com>,
"dev@dpdk.org" <dev@dpdk.org>, nd <nd@arm.com>
Subject: Re: [RFC 1/2] eal: add llc aware functions
Date: Wed, 4 Sep 2024 09:18:51 +0100 [thread overview]
Message-ID: <ZtgX6xFpITvZLBY4@bricha3-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <PAWPR08MB8909B56037BECA0FFAA10FF99F932@PAWPR08MB8909.eurprd08.prod.outlook.com>
On Tue, Sep 03, 2024 at 05:54:22PM +0000, Wathsala Wathawana Vithanage wrote:
> > Some SOCs may only show upper-level caches here, therefore cannot
> > be use blindly without knowing the SOC.
> >
> > Can you please help us understand
> >
>
> For instance, in Neoverse N1 can disable the use of SLC as LLC (a BIOS setting)
> If SLC is not used as LLC, then your script would report the unified L2 as an LLC.
> I don't think that's what you are interested in.
>
> > 1. if there are specific SoC which do not populate the information at all? If yes
> > are they in DTS?
>
> This information is populated correctly for all SOCs, comment was on the script.
>
Given all the complexities around topologies, do we want this covered by
DPDK at all? Are we better to just recommend, to any applications that
need it, that they get the info straight from the kernel via sysfs? Why
have DPDK play the middle-man here, proxying the info from sysfs to the
app?
/Bruce
next prev parent reply other threads:[~2024-09-04 8:19 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-27 15:10 [RFC 0/2] introduce LLC " Vipin Varghese
2024-08-27 15:10 ` [RFC 1/2] eal: add llc " Vipin Varghese
2024-08-27 17:36 ` Stephen Hemminger
2024-09-02 0:27 ` Varghese, Vipin
2024-08-27 20:56 ` Wathsala Wathawana Vithanage
2024-08-29 3:21 ` 答复: " Feifei Wang
2024-09-02 1:20 ` Varghese, Vipin
2024-09-03 17:54 ` Wathsala Wathawana Vithanage
2024-09-04 8:18 ` Bruce Richardson [this message]
2024-09-06 11:59 ` Varghese, Vipin
2024-09-12 16:58 ` Wathsala Wathawana Vithanage
2024-08-27 15:10 ` [RFC 2/2] eal/lcore: add llc aware for each macro Vipin Varghese
2024-08-27 21:23 ` [RFC 0/2] introduce LLC aware functions Mattias Rönnblom
2024-09-02 0:39 ` Varghese, Vipin
2024-09-04 9:30 ` Mattias Rönnblom
2024-09-04 14:37 ` Stephen Hemminger
2024-09-11 3:13 ` Varghese, Vipin
2024-09-11 3:53 ` Stephen Hemminger
2024-09-12 1:11 ` Varghese, Vipin
2024-09-09 14:22 ` Varghese, Vipin
2024-09-09 14:52 ` Mattias Rönnblom
2024-09-11 3:26 ` Varghese, Vipin
2024-09-11 15:55 ` Mattias Rönnblom
2024-09-11 17:04 ` Honnappa Nagarahalli
2024-09-12 1:33 ` Varghese, Vipin
2024-09-12 6:38 ` Mattias Rönnblom
2024-09-12 7:02 ` Mattias Rönnblom
2024-09-12 11:23 ` Varghese, Vipin
2024-09-12 12:12 ` Mattias Rönnblom
2024-09-12 15:50 ` Stephen Hemminger
2024-09-12 11:17 ` Varghese, Vipin
2024-09-12 11:59 ` Mattias Rönnblom
2024-09-12 13:30 ` Bruce Richardson
2024-09-12 16:32 ` Mattias Rönnblom
2024-09-12 2:28 ` Varghese, Vipin
2024-09-11 16:01 ` Bruce Richardson
2024-09-11 22:25 ` Konstantin Ananyev
2024-09-12 2:38 ` Varghese, Vipin
2024-09-12 2:19 ` Varghese, Vipin
2024-09-12 9:17 ` Bruce Richardson
2024-09-12 11:50 ` Varghese, Vipin
2024-09-13 14:15 ` Burakov, Anatoly
2024-09-12 13:18 ` Mattias Rönnblom
2024-08-28 8:38 ` Burakov, Anatoly
2024-09-02 1:08 ` Varghese, Vipin
2024-09-02 14:17 ` Burakov, Anatoly
2024-09-02 15:33 ` Varghese, Vipin
2024-09-03 8:50 ` Burakov, Anatoly
2024-09-05 13:05 ` Ferruh Yigit
2024-09-05 14:45 ` Burakov, Anatoly
2024-09-05 15:34 ` Ferruh Yigit
2024-09-06 8:44 ` Burakov, Anatoly
2024-09-09 14:14 ` Varghese, Vipin
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