Re: Raw Devices: Increased Performance?

From: Joel Garry <joelga_at_rossinc.com>
Date: 1996/07/15
Message-ID: <1996Jul15.211150.13036_at_rossinc.com>#1/1


In article <4scrou$2ng_at_inet-nntp-gw-1.us.oracle.com> pzola_at_us.oracle.com (Paul Zola ) writes:
>
 

>Result? Filesytem wins by more than 100% over raw device.
>
>How did this happen? It's a direct result of the access pattern of the
>database. The UNIX filesystem is optimized for random access, while
>raw devices work better for sequential access.
>

An unintended side effect is, poorly optimized apps that force too many full-table scans will do better with raw devs...

-- 
Joel Garry               joelga_at_rossinc.com               Compuserve 70661,1534
These are my opinions, not necessarily those of Ross Systems, Inc.   <> <>
%DCL-W-SOFTONEDGEDONTPUSH, Software On Edge - Don't Push.            \ V /
panic: ifree: freeing free inodes...                                   O
Received on Mon Jul 15 1996 - 00:00:00 CEST

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