From: ron minnich <rminnich@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] threads vs forks
Date: Wed, 4 Mar 2009 09:14:35 -0800 [thread overview]
Message-ID: <13426df10903040914q5b80031ene90d95d9dd53a19a@mail.gmail.com> (raw)
In-Reply-To: <3aaafc130903040852h691b8742t2052e61334c825eb@mail.gmail.com>
On Wed, Mar 4, 2009 at 8:52 AM, J.R. Mauro <jrm8005@gmail.com> wrote:
> Now I haven't tested an SSD for performance, but I know they are
> better.
Well that I don't understand at all. Is this "faith-based" performance
measurement? :-)
I have a friend who is doing lots of SSD testing and they're not
always better. For some cases, you pay a whole lot more for 2x greater
throughput.
it's not as simple as "know they are better".
>If I got one, this problem would likely subside, but I'm not
> convinced that SSDs are durable enough, despite what the manufacturers
> say. I haven't seen many torture tests on them, but the fact that
> erasing a block destroys it a little bit is scary. I do a lot of
> sustained writes with my typical desktop workload over the same files,
> and I'd rather not trust them to something that is delicate enough to
> need filesystem algorithms to be optimized for so they don't "wear
> out".
in most cases write leveling is not in the file system. It's in the
hardware or in a powerpc that is in the SSD controller. It's worth
your doing some reading here.
That said, I sure would like to have a fusion IO card for venti. From
what my friend is telling me the fusion card would be ideal for venti
-- as long as we keep only the arenas on it.
ron
next prev parent reply other threads:[~2009-03-04 17:14 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-03 11:52 hugo rivera
2009-03-03 15:19 ` David Leimbach
2009-03-03 15:32 ` Uriel
2009-03-03 16:15 ` hugo rivera
2009-03-03 15:33 ` hugo rivera
2009-03-03 18:11 ` Roman V. Shaposhnik
2009-03-03 18:38 ` Bakul Shah
2009-03-06 18:47 ` Roman V Shaposhnik
2009-03-06 20:38 ` David Leimbach
2009-03-07 8:00 ` Bakul Shah
2009-03-07 0:21 ` Bakul Shah
2009-03-07 2:20 ` Brian L. Stuart
2009-03-03 23:08 ` J.R. Mauro
2009-03-03 23:15 ` Uriel
2009-03-03 23:23 ` J.R. Mauro
2009-03-03 23:54 ` Devon H. O'Dell
2009-03-04 0:33 ` J.R. Mauro
2009-03-04 0:54 ` erik quanstrom
2009-03-04 1:54 ` J.R. Mauro
2009-03-04 3:18 ` James Tomaschke
2009-03-04 3:30 ` erik quanstrom
2009-03-04 4:44 ` James Tomaschke
2009-03-04 5:05 ` J.R. Mauro
2009-03-04 5:50 ` erik quanstrom
2009-03-04 6:08 ` andrey mirtchovski
2009-03-04 16:52 ` J.R. Mauro
2009-03-04 17:14 ` ron minnich [this message]
2009-03-04 17:27 ` William Josephson
2009-03-04 18:15 ` erik quanstrom
2009-03-05 3:32 ` J.R. Mauro
2009-03-05 3:39 ` erik quanstrom
2009-03-05 3:55 ` William K. Josephson
2009-03-05 4:00 ` erik quanstrom
2009-03-05 4:16 ` William K. Josephson
2009-03-07 3:01 ` William Josephson
2009-03-07 3:31 ` erik quanstrom
2009-03-07 6:00 ` William Josephson
2009-03-07 13:58 ` erik quanstrom
2009-03-07 14:37 ` William Josephson
2009-03-07 15:05 ` erik quanstrom
2009-03-07 15:28 ` William K. Josephson
2009-03-07 5:00 ` lucio
2009-03-07 5:08 ` William Josephson
2009-03-07 5:19 ` erik quanstrom
2009-03-07 5:45 ` [9fans] Flash William K. Josephson
2009-03-07 14:42 ` erik quanstrom
2009-03-07 14:56 ` William Josephson
2009-03-07 15:39 ` Russ Cox
2009-03-07 16:34 ` erik quanstrom
2009-03-07 5:24 ` [9fans] threads vs forks lucio
2009-03-04 5:19 ` David Leimbach
2009-03-04 2:47 ` John Barham
2009-03-04 5:24 ` blstuart
2009-03-04 5:37 ` erik quanstrom
2009-03-04 16:29 ` Roman V Shaposhnik
2009-03-04 16:56 ` john
2009-03-06 9:39 ` maht
2009-03-04 5:07 ` David Leimbach
2009-03-04 5:35 ` John Barham
2009-03-03 16:00 ` ron minnich
2009-03-03 16:28 ` hugo rivera
2009-03-03 17:31 ` ron minnich
2009-03-03 16:47 ` John Barham
2009-03-04 9:37 ` Vincent Schut
2009-03-04 9:58 ` hugo rivera
2009-03-04 10:30 ` Vincent Schut
2009-03-04 10:45 ` hugo rivera
2009-03-04 11:15 ` Vincent Schut
2009-03-04 11:33 ` hugo rivera
2009-03-04 13:23 ` Uriel
2009-03-04 14:57 ` ron minnich
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