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Re: Regular maintenance Defrag



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How much improvement you get from regularly running my
Unfrag routine is dependent on how you use your tick
file.  I'm an equities trader and save all ticks on
all stocks and indexes for 6 weeks.  This results in
about 30 Mb being deleted and added per day and the
tick file gets *very* fragmented.  So for me, it is
importantant to run Unfrag weekly.

~Bob

--- Bill Wynne <tradewynne@xxxxxxxxxxx> wrote:
> 
> >Did you notice any improvement after you defragged?
> >If so, what % increase?  Anyone actually notice a
> real
> >difference?
> 
> After running Bob Scott's TS Defrag, TS loaded in
> 1/2
> the time (tick data files collected back to 1990).
> File size reduced 30%+. Regular defrags are not such
> a big deal.
> 
> BW
> 
> 
> 
> 
> >From: Jack Griffin <jack_2231@xxxxxxxxx>
> >To: fritz@xxxxxxxx, snptrader <snptrader@xxxxxxxxx>
> >CC: omega-list@xxxxxxxxxx
> >Subject: Re: Regular maintenance Defrag
> >Date: Mon, 10 Dec 2001 04:17:06 -0800 (PST)
> >
> >...
> > > them more efficiently.  In the case of my
> fragmented
> > > TS database, the
> > > database file was splattered in 75000 pieces all
> > > around the disk.
> > > Obviously it's a lot less efficient to find
> things
> > > in that kind of a
> > > mess than if the file is in one piece.  No
> wonder TS
> > > was slow
> > > accessing its database!
> >
> >Did you notice any improvement after you defragged?
> >If so, what % increase?  Anyone actually notice a
> real
> >difference?  Or is this defragging just one of
> those
> >things us geeks harp on for the sake of being
> geeky?
> >
> >Jack
> >
> >
> >
> 
>