Re: File Systems vs. Raw Devices
Date: 26 May 1994 14:49:04 -0400
Message-ID: <2s2qv0$ksr_at_nova.umd.edu>
In article <1994May25.183843.15365_at_rossinc.com>,
Joel Gary <joelga_at_rossinc.com> wrote:
>In article <2rnj3g$npt_at_samba.oit.unc.edu> Harold.Bauer_at_launchpad.unc.edu (harold bauer) writes:
>>
>> Experiences using file systems and raw devices.
>> What are the administrative and operational problems of the two?
>
>Inevitably, someone will create a unix filesystem over your raw system.
>
>> What are the performance gains (is there really a 50% gain in using
>> raw devices over file systems)?
>
>No, more like 10-15%, at least on BSD SunOS systems.
>
>--
>Joel Garry joelga_at_amber.rossix.com Compuserve 70661,1534
>These are my opinions, not necessarily those of Ross Systems, Inc.
>%DCL-W-SOFTONEDGEDONTPUSH, Software On Edge - Don't Push.
According to Oracle, that depends on the system. If your system supports Direct I/O, as they called, there is no gain on performance between raw devices and cooked file systems.
H. Received on Thu May 26 1994 - 20:49:04 CEST