From mboxrd@z Thu Jan 1 00:00:00 1970 From: mck Subject: Re: Applications using fsync cause hangs for several seconds every few minutes Date: Wed, 03 Aug 2011 17:50:10 +0200 Message-ID: <1312386610.23947.2.camel@localhost> References: <4E2478B1.60601@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-Kpazn5FaXTYnh66fE0TQ" To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: <4E2478B1.60601@redhat.com> List-ID: --=-Kpazn5FaXTYnh66fE0TQ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2011-07-18 at 14:17 -0400, Josef Bacik wrote: > I've been looking into this and I have a suspicion. Would you run > with this patch and see if the problem goes away?=20 Didn't help me. 2.6.39 is not usable. 3.0.0 is ok for a few hours then too becomes unusable. This is discussed in future threads, eg "Btrfs slowdown". dumbing out fsync (libeatmydata) only gives marginal improvements... ~mck --=20 Bombing for peace is like F***ing for virginity | www.semb.wever.org | www.sesat.no | tech.finn.no | http://xss-http-filter.sf.net --=-Kpazn5FaXTYnh66fE0TQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) iEYEABECAAYFAk45bjIACgkQkdPrePiuutNU6wCg/XzFm04L2FU7GJeaFm3ZvFIL bYUAoLjjHOwGiv8XT4yRG+NKT5UmhsW8 =IjNM -----END PGP SIGNATURE----- --=-Kpazn5FaXTYnh66fE0TQ--