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Re: What is better asychronous IO or multiple db_writers?

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: 1998/01/22
Message-ID: <01bd2749$6de6f3b0$294b989e@WORKSTATION>#1/1 








Steve,



>                 On the other hand, the management overheads of the

> buffer cache are significant. Mostly importantly, all readers take

 a


> shared lock on the datafile inode which delays dbwr from taking its

> exclusive lock on the inode to write. This can significantly impact

> dbwr performance. 




Is this a generic Unix thing, or a particular feature of HP-UX ?
Received on Thu Jan 22 1998 - 00:00:00 CST












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