From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 194963] schedutil governor causes audio problem in game Date: Fri, 24 Mar 2017 01:11:35 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Return-path: Received: from mail.wl.linuxfoundation.org ([198.145.29.98]:43290 "EHLO mail.wl.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751047AbdCXBLi (ORCPT ); Thu, 23 Mar 2017 21:11:38 -0400 Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2509328474 for ; Fri, 24 Mar 2017 01:11:37 +0000 (UTC) Received: from pdx-korg-bugzilla-1.web.codeaurora.org (unknown [172.30.200.120]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 809E028474 for ; Fri, 24 Mar 2017 01:11:36 +0000 (UTC) In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: linux-pm@kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=194963 Rafael J. Wysocki (rjw@rjwysocki.net) changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED --- Comment #7 from Rafael J. Wysocki (rjw@rjwysocki.net) --- (In reply to John from comment #6) > The schedutil patch didn't seem to change anything, though the 4th hunk of > cpufreq_schedutil.c didn't apply and I had to do it manually, so it is > possible I messed up somewhere (I copied/pasted it so it's unlikely, but I > thought it'd be better to say it). OK, this means that schedutil is not a good match for you. It is a bit less aggressive than ondemand, on purpose. There is one more schedutil change that you may try, but I need to prepare a patch for that first. > As for pstate, I think that's the first time I've seen my CPU scaling on > pstate's powersave. I've tried the game, and I think, but not sure, that > when it started the sound cracked for just a bit, maybe before the CPU > scaled up enough? Yes, that's possible. > After that no issue, and I verified the CPU was at its > maximum frequency. When I quit the game, the CPU scaled down to its minimum > frequency within 2 seconds. Pstate's performance still doesn't scale, is it > expected? I thought on pstate both would. If you mean scaling_governor=performance, then it will always request the max P-state now, as that's what it is supposed to be doing. Thanks for the testing, the intel_pstate change will be queued up for 4.12 in the next couple of days. -- You are receiving this mail because: You are the assignee for the bug.