Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #80636

Re: CONFIG_PREEMPT_DYNAMIC=y?

Path csiph.com!fu-berlin.de!bofh.it!news.nic.it!robomod
From Emanuele Rocca <ema@debian.org>
Newsgroups linux.debian.kernel
Subject Re: CONFIG_PREEMPT_DYNAMIC=y?
Date Tue, 10 Oct 2023 12:40:01 +0200
Message-ID <HnijD-eQDD-1@gated-at.bofh.it> (permalink)
References <HmEPf-eqdx-7@gated-at.bofh.it> <HmFLj-eqM9-7@gated-at.bofh.it> <HnhQB-eQol-7@gated-at.bofh.it> <Hni0h-eQuf-1@gated-at.bofh.it>
X-Original-To Johannes Schauer Marin Rodrigues <josch@debian.org>
X-Mailbox-Line From debian-kernel-request@lists.debian.org Tue Oct 10 10:30:01 2023
Old-Return-Path <emarocca@gmail.com>
X-Amavis-Spam-Status No, score=-6.599 tagged_above=-10000 required=5.3 tests=[BAYES_00=-2, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, LDO_WHITELIST=-5, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=ham autolearn_force=no
X-Policyd-Weight using cached result; rate: -5.5
X-Gm-Message-State AOJu0YxoI7N+6c7+10hj817WqlMRb8XSFLLU4I6DERVUDnALLS0EqXKG LwtDcvXS2KZnV2lbgbOTWQY=
X-Google-SMTP-Source AGHT+IEYZLV6FPbY9jfy4f2KG0j6C7tVFlaftAk+mrN5ikDM1LjNIXN2vJwh4r5eJXOGzG+A9d60ZQ==
X-Received by 2002:a17:906:7496:b0:9a5:ce62:6e1a with SMTP id e22-20020a170906749600b009a5ce626e1amr15311054ejl.1.1696933778872; Tue, 10 Oct 2023 03:29:38 -0700 (PDT)
Sender robomod@news.nic.it
MIME-Version 1.0
Content-Type text/plain; charset=us-ascii
Content-Disposition inline
X-Mailing-List <debian-kernel@lists.debian.org> archive/latest/140325
List-ID <debian-kernel.lists.debian.org>
List-URL <https://lists.debian.org/debian-kernel/>
List-Archive https://lists.debian.org/msgid-search/ZSUoNpKCY5wn9tXq@ariel
Approved robomod@news.nic.it
Lines 15
Organization linux.* mail to news gateway
X-Original-Cc debian-kernel@lists.debian.org
X-Original-Date Tue, 10 Oct 2023 12:32:22 +0200
X-Original-Message-ID <ZSUoNpKCY5wn9tXq@ariel>
X-Original-References <169678202078.3029203.13684704010302829243@localhost> <3679117.hVnToU1rA3@bagend> <ZSUi_6M1vmdRFTAm@ariel> <169693286797.3453145.7694745520755158332@localhost>
X-Original-Sender Emanuele Rocca <emarocca@gmail.com>
Xref csiph.com linux.debian.kernel:80636

Show key headers only | View raw

Hello Johannes,

On 2023-10-10 12:14, Johannes Schauer Marin Rodrigues wrote:
> Quoting Emanuele Rocca (2023-10-10 12:10:07)
> > Setting CONFIG_HAVE_PREEMPT_DYNAMIC=y on arm64 is likely safe for us too, but
> > we may want to run some benchmark first to see if there are any noticeable
> > slowdowns.
> 
> I have a couple of arm64 boards here that I can run benchmarks on. What would
> you recommend to run to test the effect of CONFIG_HAVE_PREEMPT_DYNAMIC=y?

I'm not sure what the best benchmark would be, but maybe you could start
with something generic like timing a kernel build with and without
PREEMPT_DYNAMIC and throwing 'hey' at your favorite web server?
https://github.com/rakyll/hey

Back to linux.debian.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

CONFIG_PREEMPT_DYNAMIC=y? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2023-10-08 18:30 +0200
  Re: CONFIG_PREEMPT_DYNAMIC=y? Diederik de Haas <didi.debian@cknow.org> - 2023-10-08 19:30 +0200
    Re: CONFIG_PREEMPT_DYNAMIC=y? Emanuele Rocca <ema@debian.org> - 2023-10-10 12:10 +0200
      Re: CONFIG_PREEMPT_DYNAMIC=y? Johannes Schauer Marin Rodrigues <josch@debian.org> - 2023-10-10 12:20 +0200
        Re: CONFIG_PREEMPT_DYNAMIC=y? Emanuele Rocca <ema@debian.org> - 2023-10-10 12:40 +0200
          Re: CONFIG_PREEMPT_DYNAMIC=y? Marc Haber <mh+debian-kernel@zugschlus.de> - 2023-10-10 15:50 +0200
      Re: CONFIG_PREEMPT_DYNAMIC=y? Diederik de Haas <didi.debian@cknow.org> - 2023-10-10 14:00 +0200
        Re: CONFIG_PREEMPT_DYNAMIC=y? Vincent Blut <vincent.debian@free.fr> - 2023-10-10 14:20 +0200
          Re: CONFIG_PREEMPT_DYNAMIC=y? Diederik de Haas <didi.debian@cknow.org> - 2023-10-10 15:20 +0200
        Re: CONFIG_PREEMPT_DYNAMIC=y? Emanuele Rocca <ema@debian.org> - 2023-10-10 15:00 +0200
          Re: CONFIG_PREEMPT_DYNAMIC=y? Diederik de Haas <didi.debian@cknow.org> - 2023-10-10 23:30 +0200
            Re: CONFIG_PREEMPT_DYNAMIC=y? Diederik de Haas <didi.debian@cknow.org> - 2023-10-17 20:00 +0200
  Re: CONFIG_PREEMPT_DYNAMIC=y? Emanuele Rocca <ema@debian.org> - 2023-10-20 20:40 +0200

csiph-web