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From: Helge Deller <deller@gmx.de>
To: Eli Carter <eli.carter@inet.com>, John Bradford <john@grabjohn.com>
Subject: Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever
Date: Wed, 30 Jul 2003 08:37:09 +0200
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On Tuesday 29 July 2003 22:43, Eli Carter wrote:
> Maybe also:
>   * 100% CPU usage
>   * Toggle each jiffie (help detect interrupts disabled)
>   * User control for things like cpu/harddrive temp...
>   * and of course, Morse code ;)

Older PA-RISC machines have at the front panel a LED
which shows machine load (4 LEDs), heartbeat (1 LED), 
SCSI activity (1 LED) and network RX/TX (1 LED each).
This panel is programmable via software and a nice and 
consistent linux kernel and userspace API  across the 
architectures is IMHO a good thing.

Helge