From: Jakub Kicinski <kuba@kernel.org>
To: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Shradha Gupta <shradhagupta@linux.microsoft.com>,
Shradha Gupta <shradhagupta@microsoft.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
Ajay Sharma <sharmaajay@microsoft.com>,
Leon Romanovsky <leon@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
KY Srinivasan <kys@microsoft.com>, Wei Liu <wei.liu@kernel.org>,
Dexuan Cui <decui@microsoft.com>, Long Li <longli@microsoft.com>,
Michael Kelley <mikelley@microsoft.com>
Subject: Re: [PATCH] net :mana : Add per-cpu stats for MANA device
Date: Fri, 8 Mar 2024 11:22:44 -0800 [thread overview]
Message-ID: <20240308112244.391b3779@kernel.org> (raw)
In-Reply-To: <CH2PR21MB1480D3ACADFFD2FC3B1BB7ECCA272@CH2PR21MB1480.namprd21.prod.outlook.com>
On Fri, 8 Mar 2024 18:51:58 +0000 Haiyang Zhang wrote:
> > Dynamic is a bit of an exaggeration, right? On a well-configured system
> > each CPU should use a single queue assigned thru XPS. And for manual
> > debug bpftrace should serve the purpose quite well.
>
> Some programs, like irqbalancer can dynamically change the CPU affinity,
> so we want to add the per-CPU counters for better understanding of the CPU
> usage.
Do you have experimental data showing this making a difference
in production?
Seems unlikely, but if it does work we should enable it for all
devices, no driver by driver.
next prev parent reply other threads:[~2024-03-08 19:22 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-07 14:52 [PATCH] net :mana : Add per-cpu stats for MANA device Shradha Gupta
2024-03-07 15:29 ` Jakub Kicinski
2024-03-07 15:49 ` Haiyang Zhang
2024-03-07 17:01 ` Jakub Kicinski
2024-03-08 5:30 ` Shradha Gupta
2024-03-08 18:51 ` Haiyang Zhang
2024-03-08 19:22 ` Jakub Kicinski [this message]
2024-03-08 19:43 ` Haiyang Zhang
2024-03-08 19:52 ` Rahul Rameshbabu
2024-03-08 20:27 ` Jakub Kicinski
2024-03-08 20:33 ` Sebastian Andrzej Siewior
2024-03-11 4:19 ` Shradha Gupta
2024-03-11 15:49 ` Stephen Hemminger
2024-03-11 15:51 ` Jakub Kicinski
2024-03-11 16:41 ` Stephen Hemminger
2024-03-14 2:57 ` Shradha Gupta
2024-03-14 3:05 ` Stephen Hemminger
2024-03-14 18:27 ` Jakub Kicinski
2024-03-14 18:54 ` Haiyang Zhang
2024-03-14 19:05 ` Jakub Kicinski
2024-03-14 20:01 ` [EXTERNAL] " Alireza Dabagh
2024-04-03 5:43 ` Shradha Gupta
2024-03-07 16:17 ` Haiyang Zhang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240308112244.391b3779@kernel.org \
--to=kuba@kernel.org \
--cc=bigeasy@linutronix.de \
--cc=decui@microsoft.com \
--cc=edumazet@google.com \
--cc=haiyangz@microsoft.com \
--cc=kys@microsoft.com \
--cc=leon@kernel.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=longli@microsoft.com \
--cc=mikelley@microsoft.com \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sharmaajay@microsoft.com \
--cc=shradhagupta@linux.microsoft.com \
--cc=shradhagupta@microsoft.com \
--cc=tglx@linutronix.de \
--cc=wei.liu@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).