From: Felix Fietkau <nbd@nbd.name>
To: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] net/core: add optional threading for backlog processing
Date: Tue, 28 Mar 2023 11:46:03 +0200 [thread overview]
Message-ID: <f436c2cc-4f6f-0dc1-a343-4c41eb14935e@nbd.name> (raw)
In-Reply-To: <20230327190629.7e966f46@kernel.org>
On 28.03.23 04:06, Jakub Kicinski wrote:
> On Sat, 25 Mar 2023 06:42:43 +0100 Felix Fietkau wrote:
>> >> In my tests it brings down latency (both avg and p99) considerably in
>> >> some cases. I posted some numbers here:
>> >> https://lore.kernel.org/netdev/e317d5bc-cc26-8b1b-ca4b-66b5328683c4@nbd.name/
>> >
>> > Could you provide the full configuration for this test?
>> > In non-threaded mode the RPS is enabled to spread over remaining
>> > 3 cores?
>>
>> In this test I'm using threaded NAPI and backlog_threaded without any
>> fixed core assignment.
>
> I was asking about the rps_threaded=0 side of the comparison.
> So you're saying on that side you were using threaded NAPI with
> no pinning and RPS across all cores?
Yes.
- Felix
next prev parent reply other threads:[~2023-03-28 9:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-24 17:13 [PATCH net-next] net/core: add optional threading for backlog processing Felix Fietkau
2023-03-24 17:20 ` Jakub Kicinski
2023-03-24 17:35 ` Felix Fietkau
2023-03-24 17:47 ` Jakub Kicinski
2023-03-24 17:57 ` Felix Fietkau
2023-03-25 3:19 ` Jakub Kicinski
2023-03-25 5:42 ` Felix Fietkau
2023-03-28 2:06 ` Jakub Kicinski
2023-03-28 9:46 ` Felix Fietkau [this message]
2023-03-28 9:29 ` Paolo Abeni
2023-03-28 9:45 ` Felix Fietkau
2023-03-28 15:13 ` Paolo Abeni
2023-03-28 15:21 ` Felix Fietkau
2023-03-29 16:14 ` Jesper Dangaard Brouer
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