Re: please eat my data!

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+References: <87633wlrrk.fsf@SSpaeth.de>\r
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+Date: Mon, 12 Apr 2010 19:10:25 -0400\r
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+Message-ID: <w2ib22065d01004121610m15069cfdx67e8e06d05d6cd9@mail.gmail.com>\r
+Subject: Re: please eat my data!\r
+From: Servilio Afre Puentes <servilio@gmail.com>\r
+To: Dirk Hohndel <hohndel@infradead.org>\r
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+On 12 April 2010 13:47, Dirk Hohndel <hohndel@infradead.org> wrote:\r
+> On Mon, 12 Apr 2010 10:14:05 -0700, Stewart Smith <stewart@flamingspork.com> wrote:\r
+>> On Mon, 12 Apr 2010 17:24:35 +0200, "Sebastian Spaeth" <Sebastian@SSpaeth.de> wrote:\r
+>> > What I find intersting is that we have a 2x speedup and a 10x speedup\r
+>> > for different queries. Olly was saying on IRC that both *should* really be\r
+>> > behaving in much the same manner.\r
+>>\r
+>> Remember that on ext3 (and pretty sure ext4) fsync is the same as\r
+>> sync(). So performance depends on how much dirty data you have in your cache.\r
+>>\r
+>> libeatmydata also gets rid of msync(), O_SYNC etc as well.\r
+>\r
+> Which is why so many of us have started to use BTRFS...\r
+\r
+How stable is it now? What kernel version and distro are you using?\r
+\r
+Servilio\r