From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx3.wp.pl ([212.77.101.7]:24477 "EHLO mx3.wp.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932198Ab3KHSfW (ORCPT ); Fri, 8 Nov 2013 13:35:22 -0500 Received: from out.poczta.wp.pl ([212.77.101.240]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with SMTP for ; 8 Nov 2013 19:35:18 +0100 Date: Fri, 08 Nov 2013 19:35:18 +0100 From: yzb3@wp.pl To: linux-btrfs@vger.kernel.org Subject: Btrfs might be gradually slowing the boot process Message-ID: <527d2ee689e077.81319728@wp.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hello, I recently noticed that my boot has become slower - it took around 29s, while at the beginning it was ~6s. I thought it was an issue with systemd, because it failed to properly indicate at which stage the slowdown occurred and how long it took. I rolled back to a pretty fresh root subvolume and the boot was fast again. However, after several reboots it started lagging again (10s? preposterous!). I decided to try the *clear_cache* mount option; it was only a guess, but it did speed the boot to the proper ~6s. The question is - why? My filesystem is really small - I see no reason for a 5x boot slowdown. Is this a known issue? I will be glad to give any additional details about my fs.