Use arandom.

On Thu, Feb 25, 2010 at 6:47 AM, Will Storey <wsto...@gmail.com> wrote:
> Hi,
>
> I was attempting to test temperatures under load by running "cat
> /dev/urandom > file" and I thought my system had crashed. Instantly when
> this command begins the system becomes very unresponsive. All input over ssh
> and keyboard attached to the machine has seemingly varying, but significant,
> amounts of lag.

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