ernel.org; Paul Rosswurm
>
>Subject: Re: [EXTERNAL] Re: [PATCH V2 net-next] net: mana: Assigning IRQ
>affinity on HT cores
>
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>On Thu, Nov 30, 2023 a
r.kernel.org; net...@vger.kernel.org;
> > > >linux-ker...@vger.kernel.org;
> > > >linux-r...@vger.kernel.org; Souradeep Chakrabarti
> > > >; Paul Rosswurm
> > > >Subject: [EXTERNAL] Re: [PATCH V2 net-next] net: mana: Assigning IRQ
> > > >affin
cai.huoq...@linux.dev;
> > >ssen...@linux.microsoft.com; vkuzn...@redhat.com; t...@linutronix.de;
> > >linux-
> > >hyp...@vger.kernel.org; net...@vger.kernel.org;
> > >linux-ker...@vger.kernel.org;
> > >linux-r...@vger.kernel.org; Souradeep Chakrabarti
> > &g
rnel.org; net...@vger.kernel.org; linux-ker...@vger.kernel.org;
> >linux-r...@vger.kernel.org; Souradeep Chakrabarti
> >; Paul Rosswurm
> >Subject: [EXTERNAL] Re: [PATCH V2 net-next] net: mana: Assigning IRQ
> >affinity on
> >HT cores
> >
> >On Tue, 21 N
On Wed, 29 Nov 2023 14:17:39 -0800 Souradeep Chakrabarti wrote:
> On Mon, Nov 27, 2023 at 10:06:39AM -0800, Jakub Kicinski wrote:
> > On Mon, 27 Nov 2023 09:36:38 + Souradeep Chakrabarti wrote:
> > > easier to keep things inside the mana driver code here
> >
> > Easier for who? Upstream
On Mon, Nov 27, 2023 at 10:06:39AM -0800, Jakub Kicinski wrote:
> On Mon, 27 Nov 2023 09:36:38 + Souradeep Chakrabarti wrote:
> > easier to keep things inside the mana driver code here
>
> Easier for who? Upstream we care about consistency and maintainability
> across all drivers.
I am
Subject: [EXTERNAL] Re: [PATCH V2 net-next] net: mana: Assigning IRQ affinity on
HT cores
On Tue, 21 Nov 2023 05:54:37 -0800 Souradeep Chakrabarti wrote:
Existing MANA design assigns IRQ to every CPUs, including sibling
hyper-threads in a core. This causes multiple IRQs to work on same CPU
On Mon, 27 Nov 2023 09:36:38 + Souradeep Chakrabarti wrote:
> easier to keep things inside the mana driver code here
Easier for who? Upstream we care about consistency and maintainability
across all drivers.
Subject: [EXTERNAL] Re: [PATCH V2 net-next] net: mana: Assigning IRQ affinity on
HT cores
On Tue, 21 Nov 2023 05:54:37 -0800 Souradeep Chakrabarti wrote:
Existing MANA design assigns IRQ to every CPUs, including sibling
hyper-threads in a core. This causes multiple IRQs to work on same CPU
and may
urm
>Subject: [EXTERNAL] Re: [PATCH V2 net-next] net: mana: Assigning IRQ affinity
>on
>HT cores
>
>On Tue, 21 Nov 2023 05:54:37 -0800 Souradeep Chakrabarti wrote:
>> Existing MANA design assigns IRQ to every CPUs, including sibling
>> hyper-threads in a core. This caus
On Tue, 21 Nov 2023 05:54:37 -0800 Souradeep Chakrabarti wrote:
> Existing MANA design assigns IRQ to every CPUs, including sibling
> hyper-threads
> in a core. This causes multiple IRQs to work on same CPU and may reduce the
> network
> performance with RSS.
>
> Improve the performance by
://lore.kernel.org/r/1700574877-6037-1-git-send-email-schakrabarti%40linux.microsoft.com
patch subject: [PATCH V2 net-next] net: mana: Assigning IRQ affinity on HT cores
config: x86_64-allyesconfig
(https://download.01.org/0day-ci/archive/20231122/202311220507.k0uewcr0-...@intel.com/config)
compiler
From: Souradeep Chakrabarti Sent: Tuesday,
November 21, 2023 5:55 AM
>
> Existing MANA design assigns IRQ to every CPUs, including sibling
> hyper-threads
"assigns IRQs to every CPU"
> in a core. This causes multiple IRQs to work on same CPU and may reduce the
> network
"This may cause
> -Original Message-
> From: Souradeep Chakrabarti
> Sent: Tuesday, November 21, 2023 8:55 AM
> + /* for each interrupt find the cpu of a particular
> + * sibling set and if it belongs to the specific numa
> + * then assign irq to it and clear the cpu bit from
> +
Existing MANA design assigns IRQ to every CPUs, including sibling hyper-threads
in a core. This causes multiple IRQs to work on same CPU and may reduce the
network
performance with RSS.
Improve the performance by adhering the configuration for RSS, which assigns IRQ
on HT cores.
Signed-off-by:
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