From: erik quanstrom <quanstro@coraid.com>
To: 9fans@9fans.net
Subject: Re: [9fans] wrarenas
Date: Fri, 24 Apr 2009 13:54:09 -0400 [thread overview]
Message-ID: <c55b3f587ddfa1e5bbca3c67a9291160@coraid.com> (raw)
In-Reply-To: <755cee220967127b18c63c0f03fd1545@quintile.net>
On Fri Apr 24 13:51:18 EDT 2009, steve@quintile.net wrote:
> Is wrarenas (write venti arenas back to disk) really really
> slow or have I a hardware problem.
>
> reading 10 arenas took 30secs or so, writing them into
> a new venti (even with a bloom filter and DMA turned on)
> took about 36 hours.
>
> is this expected?
sidestepping the question about venti, a modern disk
with modern hardware should give >40mb/s; that is
dd -if /dev/sdXX/data -of /dev/null -bs 512k -count 1000
should take < 12.5s.
- erik
next prev parent reply other threads:[~2009-04-24 17:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-24 17:49 Steve Simon
2009-04-24 17:54 ` erik quanstrom [this message]
2009-04-24 17:56 ` erik quanstrom
2009-04-28 22:45 ` Russ Cox
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