kern/71968: USB disk triggers swap activity
kris at obsecurity.org
Thu Sep 30 20:50:25 PDT 2004
The following reply was made to PR kern/71968; it has been noted by GNATS.
From: Kris Kennaway <kris at obsecurity.org>
To: walter at pelissero.de
Cc: FreeBSD-gnats-submit at FreeBSD.org
Subject: Re: kern/71968: USB disk triggers swap activity
Date: Thu, 30 Sep 2004 20:42:17 -0700
Content-Type: text/plain; charset=us-ascii
On Tue, Sep 21, 2004 at 01:53:08PM +0200, Walter C. Pelissero wrote:
> Sony Vaio PCG-XG9, LaCie 160G USB2 disk with UFS2 filesystem
> mounted automatically by amd.
> When I do a substantial activity on a 160G USB2 disk the
> system starts an heavy ATA disk activity that looks like
> swapping because, even though there is still 50MB RAM
> available, the swap usage jumps up to 14% and then slowly
> reaches 17%. Soon, one by one, the programs become
> irresponsive and the system grinds to a halt (but the ATA
> activity). If I don't try it immediately, ssh from another
> node yields a connection timeout. Needless to say the USB
> keyboard and mouse die immediately, while I can still use the
> trackpad on the laptop.
> dd if=/dev/zero of=/path/to/the/usb/filesystem
Does the problem persist with 5.3?
Does 'top' or 'ps' show any unusual activity?
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