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 87D85C433F5 for ; Tue, 23 Nov 2021 23:35:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238761AbhKWXim (ORCPT ); Tue, 23 Nov 2021 18:38:42 -0500 Received: from mailbackend.panix.com ([166.84.1.89]:56886 "EHLO mailbackend.panix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240424AbhKWXik (ORCPT ); Tue, 23 Nov 2021 18:38:40 -0500 Received: from [192.168.126.80] (ip98-184-250-31.oc.oc.cox.net [98.184.250.31]) by mailbackend.panix.com (Postfix) with ESMTPSA id 4HzL9F04Y4z2jZm; Tue, 23 Nov 2021 18:35:28 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=panix.com; s=panix; t=1637710529; bh=HBtWdJ5zUb28ErfUwUNE14xqSlNsDyjDfpzy2cbGpww=; h=Date:From:Reply-To:To:cc:Subject:In-Reply-To:References; b=exvnzz/eEC966N2LvA2irfRvqxboThIcXUSNxas+VnsNhPDdjDRNrhOOOWfeSwAaJ uT7PRfDQUjq4ene50x5eAKvUSRym+aElzpzAfgWIE2yTXvIxZitGSMfp1iI70DSNY3 1I5rpjHaqIZAFCCXNcKgd91aQczaDRKCRD1cwHUk= Date: Tue, 23 Nov 2021 15:35:28 -0800 (PST) From: "Kenneth R. Crudup" Reply-To: "Kenneth R. Crudup" To: Jens Axboe cc: linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nvme@lists.infradead.org Subject: Re: Write I/O queue hangup at random on recent Linus' kernels In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Tue, 23 Nov 2021, Jens Axboe wrote: > echo 0 > /sys/block/nvme0n1/queue/wbt_lat_usec Thanks for getting back to me; trying it now. Today seems particularly prone for some reason (can't figure why, my workflow hasn't changed much) so fingers crossed. -Kenny -- Kenneth R. Crudup / Sr. SW Engineer, Scott County Consulting, Orange County CA