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
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... OReceived on Mon Jul 15 1996 - 00:00:00 CEST