From owner-freebsd-stable  Thu Apr 26 15: 0: 6 2001
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	Fri, 27 Apr 2001 01:59:52 +0400 (MSD)
From: Igor Timkin <ivt@logger.gamma.ru>
Message-Id: <200104262159.BAA28116@logger.gamma.ru>
Subject: Re: Dump very slow in 4.3-RELEASE?
In-Reply-To: <3AE70294.90405@quack.kfu.com> "from Nick Sayer at Apr 25, 2001
 10:00:04 am"
To: Nick Sayer <nsayer@quack.kfu.com>
Date: Fri, 27 Apr 2001 01:59:52 +0400 (MSD)
Cc: freebsd-stable@FreeBSD.ORG
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Nick Sayer writes:
> 2. 'dump 0fhs /dev/null 0 1048576 /usr' takes a half hour, but 'dump 0fs 
> /dev/null 1048576 /usr' takes 15 seconds (remember, we're only 
> interested in getting the estimate at the end of Pass II).

Filesystem  1K-blocks     Used    Avail Capacity iused   ifree  %iused  Mounted on
/dev/ad3a    74921604 59725895  9201981    87%  488111  391631    55%   /var/ftp

Both
dump 0f /dev/null /var/ftp
and
dump 0fh /dev/null 0 /var/ftp
take abount 12 secs till Pass III.

FreeBSD crocus.gamma.ru 4.3-STABLE FreeBSD 4.3-STABLE #0: Tue Apr 24 22:14:13 MSD 2001     ivt@crocus.gamma.ru:/usr/obj/usr/src/sys/CROCUS  i386

ad3: 73308MB <IBM-DTLA-307075> [148945/16/63] at ata1-slave WDMA2

dump | restore for 45GB take ~23 000 secs (1.9-2.0MB/sec).

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