From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C3971CACEB; Wed, 23 Oct 2024 18:00:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729706421; cv=none; b=XTXbdI7TjW5jnkxh/kCg8Pnr8dQx8Z8tphtvaT/PS8hDv5v5Ld/B7IhjuW7a+M1oMANGBoUb6M5Wo2MWd239hwk1Ep6ZtrkfE4aL6AV26OifiGSuMd5eC4KfaJ/2uT9elTwI9kZtE3Kd0EUhNGB/v81+9fde40Uxfay/zhRoJEE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729706421; c=relaxed/simple; bh=GC5YOYBRx+gZl5V2Ks6B0SwBBanF3+LpkxO9ECEL3OE=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=pEHaFXitSH6HTkqBbaB3tI3FOxBWTWqs4ZBXJkITaNj6iXLMCC8dvHUM3yia87xcQddRogffg/Y6cj+Vv6A6nHk7PgUJO0Vf8NCuEJsNITGPyEU0P3FWox93dggLF2TU9oomnOfr6DYVMcXrS9MHU7vmzNEkRuJBbk6+pxyPXg0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gHi+3rIW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gHi+3rIW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF47BC4CEE8; Wed, 23 Oct 2024 18:00:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729706421; bh=GC5YOYBRx+gZl5V2Ks6B0SwBBanF3+LpkxO9ECEL3OE=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=gHi+3rIWTAlYmZiI9E/LBenZ+HjGozLX/pfewYaJz9B8m7hafF6Ty8/iUVtYeBitE CkOE+uo4sB814xC1iBshkTIqcMr2M3PjKqabpM5VU2TbEzFInA6+IH6R4EaEdw/3MX uB0Hx7u0hnvXBKKyuP/HjBd6tXJ2S0OYgZYiUgI9Krbe5yXUrZgAcVJRTZsQKSBXmQ RsR+YPcnwNHaGvIkQZQZxN1Ea0S8wsJNP6p8iagEY8D9B8mexyMQFJ8igCivoN6PLQ uezCIihveURVpG5kmgX0ysdYdKML6IebvN5ZPWLNeS1RxCiGqCrFKuGDTwgNgAu/x6 kqqNtQgq+UNog== From: Namhyung Kim To: Peter Zijlstra , Ingo Molnar , Brian Geffon Cc: Arnaldo Carvalho de Melo , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Adrian Hunter , Jiri Olsa , Steven Rostedt In-Reply-To: <20241016190009.866615-1-bgeffon@google.com> References: <20241016190009.866615-1-bgeffon@google.com> Subject: Re: [PATCH] perf tools: sched-pipe bench: add (-n) nonblocking benchmark Message-Id: <172970642080.1242473.4539711950671023449.b4-ty@kernel.org> Date: Wed, 23 Oct 2024 11:00:20 -0700 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.15-dev-c04d2 On Wed, 16 Oct 2024 15:00:09 -0400, Brian Geffon wrote: > The -n mode will benchmark pipes in a non-blocking mode using > epoll_wait. > > This specific mode was added to demonstrate the broken sync nature > of epoll: https://lore.kernel.org/lkml/20240426-zupfen-jahrzehnt-5be786bcdf04@brauner > > > [...] Applied to perf-tools-next, thanks! Best regards, Namhyung