Date: Mon, 13 Jan 2003 21:27:13 +0100 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: Matt Dillon <dillon@FreeBSD.ORG> Cc: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sbin/dump Makefile cache.c dump.8 dump.h main.c traverse.c Message-ID: <20030113212713.A22748@freebie.xs4all.nl> In-Reply-To: <200301131942.h0DJgfbN010760@repoman.freebsd.org>; from dillon@FreeBSD.ORG on Mon, Jan 13, 2003 at 11:42:41AM -0800 References: <200301131942.h0DJgfbN010760@repoman.freebsd.org>
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On Mon, Jan 13, 2003 at 11:42:41AM -0800, Matt Dillon wrote: > dillon 2003/01/13 11:42:41 PST > > Modified files: > sbin/dump Makefile dump.8 dump.h main.c traverse.c > Added files: > sbin/dump cache.c > Log: > Add a caching option to dump. Use -C. Note that NetBSD has a caching option > called -r but it takes 512 byte blocks instead of megabytes, and I felt a > megabytes specification would be far more useful so I did not use the same > option character. > > This will *greatly* improve dump performance at the cost of possibly > missing filesystem changes that occur between passes, and does a fairly > good job making up for the loss of buffered block devices. Caching is disabled > by default to retain historical behavior. > > In tests, dump performance improved by about 40% when dumping / or /usr. Neat... my DLT anxiously awaits -- | / o / /_ _ wilko@FreeBSD.org |/|/ / / /( (_) Bulte To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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