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 A7ACF17554 for ; Fri, 21 Jun 2024 15:16:39 +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=1718982999; cv=none; b=FsyXKWdbutjPXjDI0y7VyQFnKG2PGQB+MzfJ2J0Ss4aILpdouwCiDJMbQAO8LuQK5OuAbDvvVeFh081OvNEn1oeGNUj9YPwQ1FKSNRQU+IKXgTlp1TAQ04Yfnkas18rykQdKWpNrmzg0NDDDOfAVC0x2VRPHm/C+FgXyV2k28XI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718982999; c=relaxed/simple; bh=BEgcMrpXviXEcUyWNPzFdkOjUBbxUKOkaq+MN2IQJSs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=QVrp1Hy389H+xvnNmQILz+X7Nn1JB/3caVySO1QtyiL8KJQNmYWthik1VIwk8lwZDuwCdWH4orLgAETvbL54bNQ9P0s21IIGycRPjAzX74Rx9elyAzXTcxp+OPkYGSuGIuQ7govjkf7jK0YKovCZQps3uqNUgQ+NN/X8ES1JI08= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eO5vruJY; 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="eO5vruJY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A16CC2BBFC; Fri, 21 Jun 2024 15:16:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718982999; bh=BEgcMrpXviXEcUyWNPzFdkOjUBbxUKOkaq+MN2IQJSs=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=eO5vruJYjJIuveG4KIRMBCt7oSBEhof924nUfFhiYiUJXsP+Zn+jhKYLKNMEL+/4d Km0eDymAaAsHNCe8DB07c6+yZBChkfU4BUkXMlE/0EFVj6LZeLG/eD5XpH8Pp0OjXL 7FgYHrNRQA0T7Rj1fo9cZstG2NzXcAKvMnx/IENJtDVQdKU6Z3mguyueSKTLx8oLLS 61KQdwSFmFC/Tu127AzmDqMjILVUgcYtGrWG6z4QsXenFhCQzWnlODBDOVU+v6s0zZ SFXNTv6Dzl90yMpAXCkqNK1EqJ7ukXFJvdkamFvtrgia18FDOCWU1iZtXcyERmKCdP ab325iluRQ3vw== Message-ID: <466f9ee9-74c5-4e2a-8874-dba549fca2f2@kernel.org> Date: Fri, 21 Jun 2024 17:16:31 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V7 0/9] SCHED_DEADLINE server infrastructure To: Vineeth Remanan Pillai Cc: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , Valentin Schneider , linux-kernel@vger.kernel.org, Luca Abeni , Tommaso Cucinotta , Thomas Gleixner , Joel Fernandes , Shuah Khan , Phil Auld , Suleiman Souhlal , Youssef Esmat References: Content-Language: en-US, pt-BR, it-IT From: Daniel Bristot de Oliveira In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 6/21/24 17:09, Vineeth Remanan Pillai wrote: > On Fri, Jun 21, 2024 at 10:59 AM Daniel Bristot de Oliveira > wrote: >> >> On 6/21/24 16:41, Vineeth Remanan Pillai wrote: >>> Sorry that I could not get to reviewing and testing this revision. In >>> v6 we had experienced a minor bug where suspend/resume had issues with >>> dlserver. Since suspend does not do dequeue, dlserver is not stopped >>> and this causes the premature wakeups. >> >> Ouch! I will have a look next week on this. Do you guys know any other bug? >> >> an earlier report without necessarily a fix/work around is a good thing >> for us to try to reproduce it/think about it as earlier as we can... >> > Sorry my mistake, I was buried in other things and missed reporting > this earlier. no worries. > > There was another minor regression seen lately after we fixed the > above issue- idle cpu was spending more time in C7 than C10 with the > dlserver changes. This was reported very recently and we haven't > investigated this much yet. Just a heads up and will keep you posted > as we know more. Maybe that is an expected side effect because of the timer for the server, AFAIR you guys are using a short period large runtime (25ms/50ms)? > Thanks, > Vineeth