Amanda-Users

Re: FreeBSD backups are extremely slow?

2004-07-19 14:26:28
Subject: Re: FreeBSD backups are extremely slow?
From: Mitch Collinsworth <mitch AT ccmr.cornell DOT edu>
To: Joe Rhett <jrhett AT isite DOT net>
Date: Mon, 19 Jul 2004 14:20:03 -0400 (EDT)
On Mon, 19 Jul 2004, Joe Rhett wrote:

> FYI, dumper appears to break the backup into 1gb chunks?  I don't know if
> this is relevant or not.

You mean on the holding disk?  That's normal but you can configure the
chunksize or turn it off if you wish.

> > I'm seeing EXTREMELY slow backups of a moderately-sized file system on a
> > FreeBSD host.  I'm a little confused by this, as everything appears to be
> > working .. it's just REALLY slow...

The most common cause of this is a network duplex mismatch somewhere.
Often between the host and the switch.  Note that full<--->auto IS a
mismatch.  If one side is locked to full, the other side must be locked,
too.

-Mitch

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