Re: sequential disk read speed
From: -CELKO- <jcelko212_at_earthlink.net>
Date: Fri, 22 Aug 2008 07:13:45 -0700 (PDT)
Message-ID: <67e661d9-bbfe-46e2-a5ac-c9cbc29d0d9b_at_c65g2000hsa.googlegroups.com>
Date: Fri, 22 Aug 2008 07:13:45 -0700 (PDT)
Message-ID: <67e661d9-bbfe-46e2-a5ac-c9cbc29d0d9b_at_c65g2000hsa.googlegroups.com>
>> Why can a disk only read 64KB at a time? Is this a valid assumption? Is this a disk limitation or a file system limitation? <<
The author has to provide some numbers to show how to calculate an estimation for disk access. Frankly, 64KB seems a little small for a modern computer other than a desktop machine.
What you might consider is the rise of solid state storage, which will start replacing moving disk hardware in the next few years. This with multi-core processors will change database design radically. We work in a trade where everything you know is wrong in five years :) Received on Fri Aug 22 2008 - 16:13:45 CEST