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Fwd: Is 2K ACID TPS fast for a disk based (scala) database?

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Bill La Forge
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---------- Forwarded message ----------
From: William la Forge <laforge49 [at] gmail [dot] com>
Date: Tue, Oct 18, 2011 at 7:21 PM
Subject: Re: [scala-user] Is 2K ACID TPS fast for a disk based (scala) database?
To: "Martin S. Weber" <martin [dot] weber [at] nist [dot] gov>


OK, I turned off the write cache on the disk. Performance dropped from 2222/sec to 2058.

Bill

On Tue, Oct 18, 2011 at 8:52 AM, Martin S. Weber <martin [dot] weber [at] nist [dot] gov> wrote:
On 10/18/11 11:43, William la Forge wrote:
Razvan,

Easy, at least for the small records datastore, which swift builds on. I
have two dedicated areas on disk which are written to alternately for
each transaction. Each area contains both a timestamp and a checksum. On
startup you read both and use the latest valid data.

So you've turned off the disk's hardware cache, too?

-Martin


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