> one of the reasons for this  is that the FreeBSD kernel was
> compiled from source and the Linux one wasn't.. redhat's stock kernels are
> "jack of all trades, masters of none" and 'optimized' for 386. heh. if you

What!  That makes no sense.  A compiled kernel is different from a
non-compiled one?  Someone compiled it once.  He said he didn't make any
changes to the FreeBSD kernel except recompile.  I will be shocked to
hear he sees any difference in a kernel recompile.

That said. we are tracking down an linux OS kernel problem today in
pre-7.0 where read-aheads are turned off when a seek is performed on the
file.  I have downloaded the linux kernel 2.2.0, and I see the cause is
that only repeated reads/writes without a seek cause file system
readahead.

Other OS's check to see if a previous read-ahead was used, and control
read-ahead that way.  Much better.  Or am I making an eroneous
comparison?  This was a real-world test where someone is saying pre-7.0
is slower for sorting.

> so, all in all, my plea would be to refrain from making eroneous comparisons
> between systems.. the only useful comparisons are tests that are reflective of
> the real world.. (e.g. w/windows you CAN'T compile the OS, so that's that...
> with linux and bsd you most deffinitely SHOULD compile... ) i understand the
> enthusiasm for your OS of choice. however, if you give misleading information
> and someone actually tries it out and finds that what you said wasn't exactly
> accurate, how does reflect on your OS? answer: not very well. 

Are you telling him not to say anything about what he sees?

-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  [EMAIL PROTECTED]            |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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