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Date:      Tue, 17 Oct 2000 13:30:17 -0400
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        Paul Saab <ps@FreeBSD.org>
Cc:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, Darrell Anderson <anderson@cs.duke.edu>
Subject:   Re: cvs commit: src/sys/alpha/alpha pmap.c src/sys/alpha/include param.h src/sys/cam/scsi scsi_da.c src/sys/dev/ata ata-disk.c src/sys/i386/i386 pmap.c src/sys/i386/include param.h src/sys/ia64/ia64 pmap.c src/sys/ia64/include param.h src/sys/vm ...
Message-ID:  <20001017133017.D5201@grasshopper.cs.duke.edu>
In-Reply-To: <200010171005.DAA22181@freefall.freebsd.org>; from ps@FreeBSD.org on Tue, Oct 17, 2000 at 03:05:50AM -0700
References:  <200010171005.DAA22181@freefall.freebsd.org>

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Paul Saab [ps@FreeBSD.org] wrote:

<..>

>   Before:				After:
>   	WCE           TIME		WCE           TIME
>   	------------------		------------------
>   	1	141.820972		1	 15.600111
>   	0	797.265072		0	 65.480465

<..>

If you want really fast crashdumps, check out netdump.  This is a cool 
little hack written by one of our best systems grad students.

Netdump does partial crashdumps over the network.  Using its partial
dump feature, it typically takes less that 10 seconds to dump a 512MB
machine.  In addition to being fast, it is really nice for kernel
developement because you can be debugging the problem while the test
machine is still rebooting/fsck'ing.

See http://www.cs.duke.edu/~anderson/freebsd/netdump/ 
    http://www.cs.duke.edu/~anderson/freebsd/netdump/readme.html

-- 
------------------------------------------------------------------------------
Andrew Gallatin, Sr Systems Programmer	http://www.cs.duke.edu/~gallatin
Duke University				Email: gallatin@cs.duke.edu
Department of Computer Science		Phone: (919) 660-6590


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