From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39F9AC678D4 for ; Mon, 6 Mar 2023 07:42:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229579AbjCFHmD (ORCPT ); Mon, 6 Mar 2023 02:42:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229528AbjCFHmC (ORCPT ); Mon, 6 Mar 2023 02:42:02 -0500 Received: from muru.com (muru.com [72.249.23.125]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 25BEC1E1F6 for ; Sun, 5 Mar 2023 23:42:02 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 813838027; Mon, 6 Mar 2023 07:42:01 +0000 (UTC) Date: Mon, 6 Mar 2023 09:42:00 +0200 From: Tony Lindgren To: Yegor Yefremov Cc: Linux-OMAP , Bin Liu , Johan Hovold Subject: Re: am335x: performnce issues with FTDI and LOW_LATENCY Message-ID: <20230306074200.GD7501@atomide.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org * Yegor Yefremov [230228 08:01]: > Any idea why the performance drop is so big? Maybe lots of interrupts and dma not being used for musb in this case? Tony