Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site linus.UUCP Path: utzoo!linus!smk From: smk@linus.UUCP (Steven M. Kramer) Newsgroups: net.unix-wizards Subject: 4.1bsd maximum raw read question Message-ID: <26928@linus.UUCP> Date: Sat, 25-Jun-83 11:06:56 EDT Article-I.D.: linus.26928 Posted: Sat Jun 25 11:06:56 1983 Date-Received: Sat, 25-Jun-83 19:46:49 EDT Organization: MITRE Corp., Bedford MA Lines: 10 In 4.1bsd, the raw I/O is done thru physio(). The last parameter is a routine to determine the maximum count to be transferred. The routine used is mostly minphys(), which limits it to 60K. So this means that raw I/O is done thru 60K bytes at most, right? Can this value be changed without any side affects? We want this for an application that does fast disk-disk backups (on RM05s). -- --steve kramer {allegra,genrad,ihnp4,utzoo,philabs,uw-beaver}!linus!smk (UUCP) linus!smk@mitre-bedford (ARPA)