Its just representing activity over the most recent "period".
That period is probly relative to the last measurement displayed.
-----Original Message-----
From: Jamie Lawrence [mailto:jal@thirdage.com]
Sent: Friday, October 13, 2000 2:22 PM
To: Chris Thompson; toasters(a)mathworks.com
Subject: Re: Trivia: what do the splodges on the LCD represent?
At 08:45 PM 10/13/00 +0100, Chris Thompson wrote:
>During normal operation, the LCD on an F7xx displays each second a
>number, which I believe to be the number of NFS operations in the
>last second, followed by a row of 0 to 10 splodges --- at any rate,
>I have never seen more than 10.
>
>The hardware installation guide refers to this as "a bar graph" but
>doesn't go into details. What is actually being measured here? The
>number of splodges is correlated with the number, but not very
>strongly, and the number has a far larger dynamic range.
After staring at that thing and wondering myself, it looks to me
as if it is sort of a sliding rate-of-change meter.
When there is a big surge in #/Ops over a short period of time, bar
jumps up a lot. Ditto for a big decrease in ops, shaving the bar.
However, I've seen the bar nearly pegged with a relatively small number of
ops (say, 400 or so) and hanging around 50% when the machine in question
was pushing as many as I ever have seen it push.
In general, I think the main purpose is to have Cool Blinky Lights.
-j