From: Andi Kleen <andi@firstfloor.org>
To: Chris Mason <chris.mason@oracle.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Peter Zijlstra <peterz@infradead.org>,
linux-btrfs <linux-btrfs@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: Btrfs v0.16 released
Date: Fri, 8 Aug 2008 23:56:25 +0200 [thread overview]
Message-ID: <20080808215625.GC9038@one.firstfloor.org> (raw)
In-Reply-To: <1218221293.15342.263.camel@think.oraclecorp.com>
> So, the mirroring turns a single large write into two large writes.
> Definitely not free, but always a fixed cost.
Thanks for the explanation and the numbers. I see that's the advantage of
copy-on-write that you can actually always cluster the metadata together and
get always batched IO this way and then afford to do more of it.
Still wondering what that will do to read seekiness.
-Andi
next prev parent reply other threads:[~2008-08-08 21:55 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-05 19:01 Btrfs v0.16 released Chris Mason
2008-08-07 9:08 ` Peter Zijlstra
2008-08-07 10:34 ` Chris Mason
2008-08-07 14:58 ` Chris Friesen
2008-08-07 15:07 ` tvrtko.ursulin
2008-08-07 9:14 ` Peter Zijlstra
2008-08-07 10:39 ` Chris Mason
[not found] ` <3da3b5b40808070703x4cf49471q6acc00351ba019d7@mail.gmail.com>
2008-08-07 14:06 ` Chris Mason
2008-08-07 18:02 ` Andi Kleen
2008-08-08 18:48 ` Chris Mason
2008-08-08 21:56 ` Andi Kleen [this message]
2008-08-09 1:19 ` Theodore Tso
2008-08-09 1:23 ` Andi Kleen
[not found] ` <20080809012322.GF9038@one.firstfloor.org>
2008-08-09 1:43 ` Theodore Tso
2008-08-14 21:00 ` Chris Mason
2008-08-14 21:17 ` Andi Kleen
2008-08-15 1:25 ` Chris Mason
2008-08-15 1:39 ` Andi Kleen
2008-08-15 13:00 ` Chris Mason
2008-08-16 19:26 ` Szabolcs Szakacsits
2008-08-18 13:52 ` Chris Mason
2008-08-18 17:37 ` Szabolcs Szakacsits
2008-08-14 23:44 ` Theodore Tso
2008-08-15 1:10 ` Chris Mason
2008-08-15 12:46 ` Chris Mason
2008-08-15 13:45 ` Theodore Tso
2008-08-15 17:52 ` Chris Mason
2008-08-15 19:59 ` Theodore Tso
2008-08-15 20:37 ` Chris Mason
2008-08-16 18:10 ` Chris Mason
2008-08-16 19:27 ` Theodore Tso
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