From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rolf Fokkens Subject: Re: Is bcache dead? Date: Thu, 06 Nov 2014 23:12:39 +0100 Message-ID: <545BF257.6020708@rolffokkens.nl> References: <545229F8.8000502@profihost.ag> <54529797.2020004@hardwarefreak.com> <20141030233425.GA28233@kmo-pixel> <545B8DDC.4070905@bahj.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wi0-f177.google.com ([209.85.212.177]:62221 "EHLO mail-wi0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751069AbaKFWUi (ORCPT ); Thu, 6 Nov 2014 17:20:38 -0500 Received: by mail-wi0-f177.google.com with SMTP id ex7so2912505wid.4 for ; Thu, 06 Nov 2014 14:20:36 -0800 (PST) In-Reply-To: <545B8DDC.4070905@bahj.com> Sender: linux-bcache-owner@vger.kernel.org List-Id: linux-bcache@vger.kernel.org To: Zachary Palmer , "linux-bcache@vger.kernel.org" Another happy user experience: I started packaging bcache-tools for Fedora 20 summer 2013, just because I wanted to use bcache. After alligning bcache-tools with util-linux, Dracut and LVM2 (all these packages needed minor tweaks, that were all integrated upstream) I have been using bcache myself (of course). I've been living on the edge by using writeback caching and a cheap SSD, and it has all been working like a charm! Well, I've been living over the edge actually by attempting to enable TRIM - I blame the resulting corruptions on the cheap SSD. And I had occasional "bcache_writeback 100% CPU" issues, but those seem to be gone (currently kernel 3.16). And searching for bcache at bugzilla.redhat.com: no bugs pop up. Could be that there are no bcache users at all, but I know for fact that that's not true. So (when not using TRIM): excellent performance and stability. Thanks for the good work! Rolf On 11/06/2014 04:03 PM, Zachary Palmer wrote: > If I can throw mine in as well, I've been running bcache on my Debian > Wheezy laptop for around a year now. (I'm using the Debian backports > 3.12 kernel.) When I first moved to bcache, I noticed that certain > operations -- interacting with Git repositories and building LaTeX > documents, for instance -- became much snappier. I'm using a feeble > little 32GB SSD that came with the laptop to cache a 1TB drive and I'm > even using writethrough caching (more out of paranoia about the > quality of my cheap little SSD than anything else), but it makes a > difference. > > Since then, it has been quietly humming along and I've stopped paying > attention to it. And that's the beauty of a good tool like this: I > can stop paying attention to it. I've enjoyed a year of better I/O > and, other than in the initial setup, I haven't paid anything in > maintenance burden: no instability, no hiccups, no unexplained hangs. > So for my part as an end user just trying to get a little edge out of > my laptop hardware, thank you! I expect I'm speaking on behalf of > quite a few people when I say that you've made things better in a > subtle but significant way. :) > > Cheers, > > Zach