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 A696B2D796 for ; Fri, 1 Mar 2024 08:59:48 +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=1709283588; cv=none; b=khwKNStG4LY4QL2pz07jTQpWSDmO3cjk8U5vxzpdm1RRGvAIrQsmeWlIumuJCYfnxnfE5LOBedl2RLnn6odpFPy3WXBpJrck3wh73anclvUxx05X5IvB8hbpuXHmgPlKgHjD/c9drnUcf05s4rnIcaEbt2cg7ONhircRHSXQbqo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709283588; c=relaxed/simple; bh=+bh9P8eU4HByiHsjOrSf5002ymCM12FKMR6ifMNi/i8=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=OYcJvk9iqfqmMaL1NqQMHVOmcwqTvUGY3qdlke92oa8h54amWnNopyFj1obOt+hjepkx1PKWETp9q49JmNDUN/mQOk/bWyrRqLhvI6Ini789lIpTtuKyNti6e4wARdk8xlOQBq7Md5iymYv8jN7uB5U0hRaUKUz+Ju5Rkcrr9ks= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CAAfnSBg; 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="CAAfnSBg" Received: by smtp.kernel.org (Postfix) with ESMTPS id 3B874C43390 for ; Fri, 1 Mar 2024 08:59:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709283588; bh=+bh9P8eU4HByiHsjOrSf5002ymCM12FKMR6ifMNi/i8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=CAAfnSBgTYFJTLl9C/3fa+nqafi6x4tzQBEHe2HrVgZGIUhJ0aQxaksn6bJWq3YHO KGNi4kK6cKHe7rKOk7Frw45+o1q07qpjvwGeVI6sHq2Po8dnSgBb3LSbZvlzcQTFSr 6FR/xidfoyuskIjnvgHdf0emIN0BRvUKlKamMMON+InT7h18tlisrKGgvYFu84uqnn uu8OoSJ8HPdG69KZ4iRTMOxaBAUMgJ/XPWWjQEoQUxIfd+oV8/jleDz9Lw6S0/ejDR vZUvcE3GlsFwjAlZjzp3cyw+J1qDYvJ3zkpjvWXECGDKw4WZS2W/p6dsli76bs6F9Y G+aFmlJAcdlUg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 1EEFBC53BC6; Fri, 1 Mar 2024 08:59:48 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 218525] Thunderbolt eGPU bad performance Date: Fri, 01 Mar 2024 08:59:47 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: kaukov.peter@pm.me X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D218525 --- Comment #10 from Kaukov (kaukov.peter@pm.me) --- > There's like a 3% difference between Windows and Linux results for this > benchmark though Windows has two times better min fps. Yes, but that is a one-off case. The performance otherwise is abysmal. > First is that the real PCIe link to the 06:00 eGPU device is running on > limited bandwidth: This automatically adjusts to 8GT/s, Width x4 when actively using the eGPU.= On AMD I couldn't get it to run past 2.5GT/s but I'll try with the new kernel parameters when I have an AMD GPU at hand. After further testing and setting `pcie_aspm.policy=3Dperformance` and `intel_iommu=3Doff`, nothing changed. The performance in games is still aby= smal and unplayable. I'll attach my lspci and dmesg logs again, after running Baldur's Gate 3 via Proton Experimental and on DX11. Could this be a Wine/DXVK/Vulkan issue and not a kernel issue? Although OP stated that when running via a PCIe M.2 x4 link no issues occur. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=