Groups > alt.folklore.computers > #164534

Re: The football supporters' derisory chant?

Path	csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From	Bob Eager <news0006@eager.cx>
Newsgroups	alt.folklore.computers
Subject	Re: The football supporters' derisory chant?
Date	5 Jun 2016 07:22:21 GMT
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On Sat, 04 Jun 2016 22:10:06 -0500, Charles Richmond wrote:

> "Bob Eager" <news0006@eager.cx> wrote in message
> news:dr0pm9Fm19sU25@mid.individual.net...
>> On Sun, 29 May 2016 18:35:22 +0100, gareth G4SDW GQRP #3339 wrote:
>>
>>> "Bob Eager" <news0006@eager.cx> wrote in message
>>> news:dr0hgqFm19sU23@mid.individual.net...
>>>> .... I did my M.Sc. there in 1973-74
>>>
>>> How much of what wasthought to be MSc material in 1974 is now common
>>> knowledge amongst 14-year-olds?
>>
>> I did some pretty advanced operating systems theory, compiler writing,
>> theory of computation, the real details inside disk controllers,
>> comparative programming languages, algorithms and data structures....
>>
>> So, I'd say...not a lot.
>>
>> The Essex course was good though. There was one alternative...I was
>> offered a place at Imperial College.
>>
>> I rejected them...the course was too easy.
>>
>>
> Now a hard disk in a PC has its own processor, quite a bit of cache
> memory, and algorithms to control what the disk drive system does.  For
> example, if you write out a block to disk, that block may wait for
> milliseconds in the cache... the processor wants to see if an additional
> block will be written to the file.  If another block is written, a
> similar wait may occur.  When the wait time expires, whatever blocks
> that were written to cache... are dumped to the actual disk.  A disk
> read may cause an entire track to be read into the cache, the thought
> being that another read from the track could be eminent.   My WD Green
> disk drive claims that after a certain time with *no*
> disk access, the disk heads will be "unloaded".
> 
> The preceding are sample things that a modern processor-controlled disk
> drive may do.  I'd sure like to understand *all* the algorithms used by
> the drive to make such decisions!!!

I doubt that anyone does! It sure screws up any attempt to optimise head 
movement.



-- 
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Thread

The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-29 11:31 +0100
  Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-29 10:44 +0000
    Re: The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-29 14:25 +0100
      Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-29 13:27 +0000
        Re: The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-29 14:53 +0100
          Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-29 15:51 +0000
            Re: The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-29 17:37 +0100
              Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-29 17:35 +0000
            Re: The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-29 18:35 +0100
              Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-29 18:11 +0000
                Re: The football supporters' derisory chant? "Charles Richmond" <numerist@aquaporin4.com> - 2016-06-04 22:10 -0500
                Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-06-05 07:22 +0000
                Re: The football supporters' derisory chant? Ahem A Rivet's Shot <steveo@eircom.net> - 2016-06-05 09:13 +0100
              Re: The football supporters' derisory chant? Morten Reistad <first@last.name.invalid> - 2016-05-29 20:34 +0200
                Re: The football supporters' derisory chant? mausg@mail.com - 2016-05-30 14:47 +0000
                Re: The football supporters' derisory chant? "J. Clarke" <j.clarke.873638@gmail.com> - 2016-05-30 13:32 -0400
              Re: The football supporters' derisory chant? usenet@only.tnx (Questor) - 2016-05-31 17:33 +0000
                Re: The football supporters' derisory chant? Walter Banks <walter@bytecraft.com> - 2016-05-31 14:51 -0400
              Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-31 20:32 +0000
          Re: The football supporters' derisory chant? Quadibloc <jsavard@ecn.ab.ca> - 2016-05-30 11:36 -0700
            Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-30 19:51 +0000
              Re: The football supporters' derisory chant? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2016-05-30 22:57 +0000
                Re: The football supporters' derisory chant? Ahem A Rivet's Shot <steveo@eircom.net> - 2016-05-31 07:06 +0100
                Re: The football supporters' derisory chant? Stan Barr <plan.b@bluesomatic.org> - 2016-05-31 07:13 +0000
                Re: The football supporters' derisory chant? Ahem A Rivet's Shot <steveo@eircom.net> - 2016-05-31 09:02 +0100
                Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-05-31 08:37 +0000
                Re: The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-31 12:25 +0100
                Re: The football supporters' derisory chant? Ahem A Rivet's Shot <steveo@eircom.net> - 2016-05-31 14:06 +0100
            Re: The football supporters' derisory chant? "J. Clarke" <j.clarke.873638@gmail.com> - 2016-05-30 16:01 -0400
              Re: The football supporters' derisory chant? Ahem A Rivet's Shot <steveo@eircom.net> - 2016-05-31 07:44 +0100
              Re: The football supporters' derisory chant? sidd@situ.com (sidd) - 2016-06-03 00:09 -0400
                Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-06-03 10:34 +0000
                Re: The football supporters' derisory chant? jmfbahciv <See.above@aol.com> - 2016-06-03 13:16 +0000
                Re: The football supporters' derisory chant? scott@slp53.sl.home (Scott Lurndal) - 2016-06-03 14:47 +0000
                Re: The football supporters' derisory chant? jmfbahciv <See.above@aol.com> - 2016-06-04 13:45 +0000
                Re: The football supporters' derisory chant? Bob Eager <news0006@eager.cx> - 2016-06-03 17:36 +0000
                Re: The football supporters' derisory chant? jmfbahciv <See.above@aol.com> - 2016-06-04 13:44 +0000
            Re: The football supporters' derisory chant? "gareth G4SDW GQRP #3339" <no.spam@thank.you.invalid> - 2016-05-30 23:21 +0100
        Re: The football supporters' derisory chant? Peter Flass <peter_flass@yahoo.com> - 2016-05-29 11:50 -0400

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