Re: Raw Device Vs.Cooked File

hpandu wrote in message <3779ED4E.ECC50B45@miel.mot.com>... >Hi, > >Informix supports to create dbspace either in a "raw device " space or >as a "cooked file" >What is the difference in performance in using either of dbspace If you are comparing like with like then raw will always be faster, purely = 'cos the call to disk involves less code. What muddies the water is the = later flavour's of Unix have quite advanced file caching and pre-emptive = fetch algorithms to improve the perceived performance of the FS. Add to = this products such as Veritas and the various RAID technologies and life = is not as simple as it used to be. =20 Paul Watson WF Software Ltd Tel +44 1436 674729 Fax +44 1436 678729 www.wfsoftware.co.uk ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************