Re: [LINUX-KERNEL] HDD Noise stopped with cat /dev/zero

David Monro (davidm@fuzzbox.psrg.cs.usyd.edu.au)
Thu, 17 Oct 1996 23:51:05 +1000 (EST)


Dunno - but I have an old machine where I can here noises from the ancient hard
drive (we are talking 8 year old 40Mb MFM here) when network traffic is going
through the machine - go figure. (And no, it isn't the drive doing things -
the disk select light (remember those?) isn't even on). If I have the sound
card plugged in I get to listen to the traffic quite loudly too :-(

I've also had at least two machines which made strange noises when the case was
open and in quiet surroundings with no sound card or anything - again network
traffic was triggering the noises, though I have no idea why I could hear it.
I can remember one particularly strange incident where I could here noises
when I was running a CPU intensive job (raytracing) as opposed to the machine
being idle. I can only guess I am hearing subharmonics of the bus traffic but
I find that hard to believe.

Just one of those things I guess.

David

> Hi,
>
> Just a curiosity... Sometimes I'm really annoyed with the hdd noise,
> that I think has some interaction with my ppp link !?!? One day I, don't
> remember why, issued the magic words "cat /dev/zero" and... that noise
> stopped!!! As soon as I cancelled the cat the noise returns!!! Any
> comments???
>
> []s,
>
> Arnaldo Carvalho de Melo http://www.conectiva.com.br/~acme
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