From owner-freebsd-current Wed Sep 11 10:15: 9 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2967737B400 for ; Wed, 11 Sep 2002 10:15:07 -0700 (PDT) Received: from beppo.feral.com (beppo.feral.com [192.67.166.79]) by mx1.FreeBSD.org (Postfix) with ESMTP id 94DAF43E42 for ; Wed, 11 Sep 2002 10:15:06 -0700 (PDT) (envelope-from mjacob@feral.com) Received: from mailhost.feral.com (mjacob@mailhost.feral.com [192.67.166.1]) by beppo.feral.com (8.11.3/8.11.3) with ESMTP id g8BHF5v11961 for ; Wed, 11 Sep 2002 10:15:05 -0700 (PDT) (envelope-from mjacob@feral.com) Date: Wed, 11 Sep 2002 10:15:04 -0700 (PDT) From: Matthew Jacob X-Sender: mjacob@beppo Reply-To: mjacob@feral.com To: current@freebsd.org Subject: Re: Any problems with increaseing the dump(8) block size? In-Reply-To: <20020911170749.GA27252@dragon.nuxi.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG No. Don't change this- people are very well attuned to using an argument to change it and all your change will do is catch the unwary and possibly break binary compat on apps that define records based off of NTREC. On Wed, 11 Sep 2002, David O'Brien wrote: > I'd like to make this commit to get better performance on today's > streaming tape drives. It seems my DLT drive doesn't stream well with > the default block size of '10'. > > > Index: include/protocols/dumprestore.h > =================================================================== > RCS file: /home/ncvs/src/include/protocols/dumprestore.h,v > retrieving revision 1.10 > diff -u -r1.10 dumprestore.h > --- include/protocols/dumprestore.h 17 Jul 2002 02:03:19 -0000 1.10 > +++ include/protocols/dumprestore.h 19 Jul 2002 05:30:39 -0000 > @@ -56,7 +56,7 @@ > * or TS_ADDR record. Note that it must be a power of two. > */ > #define TP_BSIZE 1024 > -#define NTREC 10 > +#define NTREC 64 > #define HIGHDENSITYTREC 32 > #define TP_NINDIR (TP_BSIZE/2) > #define LBLSIZE 16 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message