From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36253) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMPKi-0004v2-S6 for qemu-devel@nongnu.org; Mon, 12 Nov 2018 22:25:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gMPKd-0001gH-SI for qemu-devel@nongnu.org; Mon, 12 Nov 2018 22:25:44 -0500 Received: from indium.canonical.com ([91.189.90.7]:39550) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gMPKd-0001fk-Ki for qemu-devel@nongnu.org; Mon, 12 Nov 2018 22:25:39 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1gMPKc-0004hj-Ar for ; Tue, 13 Nov 2018 03:25:38 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 50F8B2E80C9 for ; Tue, 13 Nov 2018 03:25:38 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 13 Nov 2018 03:15:55 -0000 From: Chen Zhang <1802915@bugs.launchpad.net> Reply-To: Bug 1802915 <1802915@bugs.launchpad.net> Sender: bounces@canonical.com References: <154202828346.10437.1411488850787353605.malonedeb@wampee.canonical.com> Message-Id: <154207895551.2749.13938470931805098780.launchpad@gac.canonical.com> Errors-To: bounces@canonical.com Subject: [Qemu-devel] [Bug 1802915] Re: GTK display refresh rate is throttled List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org ** Description changed: Guest OS running with GL enabled GTK display shows a reduced refresh rate, e.g. moving cursor around with iGVT-g DMA Buf. = - It seems that a default refresh interval GUI_REFRESH_INTERVAL_DEFAULT + Apparently, a default refresh interval GUI_REFRESH_INTERVAL_DEFAULT (30ms) is defined in include/ui/console.h, throttling the display refresh rate at 33Hz. = - To correct this throttle issue, a shorter interval should be applied to - display change listener or the default value should be used. + To correct this throttle issue, a shorter interval (16 or 17 + milliseconds) should be applied to display change listener or the + default value should be modified. -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1802915 Title: GTK display refresh rate is throttled Status in QEMU: New Bug description: Guest OS running with GL enabled GTK display shows a reduced refresh rate, e.g. moving cursor around with iGVT-g DMA Buf. Apparently, a default refresh interval GUI_REFRESH_INTERVAL_DEFAULT (30ms) is defined in include/ui/console.h, throttling the display refresh rate at 33Hz. To correct this throttle issue, a shorter interval (16 or 17 milliseconds) should be applied to display change listener or the default value should be modified. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1802915/+subscriptions