[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Regular maintenance Defrag



PureBytes Links

Trading Reference Links

Greetings Bob:

I remembered you have shared your defrag tool on this list but I seemed to
have lost mine somewhere.  Could you please send to my private email once
more?  By the way, the defrag tool is good for TS2000i Prosuite?  TIA and
regards

Have a good one
Jeff Harteam
Hong Kong

-----Original Message-----
From: Bill Wynne [mailto:tradewynne@xxxxxxxxxxx]
Sent: Monday, December 10, 2001 11:07 PM
To: rlscott_4888@xxxxxxxxx; jack_2231@xxxxxxxxx; fritz@xxxxxxxx;
snptrader@xxxxxxxxx
Cc: omega-list@xxxxxxxxxx
Subject: Re: Regular maintenance Defrag



>>Regular defrags are not such a big deal.

To be clear, I think regular defrags are
important, just that they didn't have the
dramatic impact on performance that the
first first one did (in my case).

Thanks to Bob for a great tool,

BW


>From: Bob Scott <rlscott_4888@xxxxxxxxx>
>To: Bill Wynne <tradewynne@xxxxxxxxxxx>, jack_2231@xxxxxxxxx,
>fritz@xxxxxxxx,  snptrader@xxxxxxxxx
>CC: omega-list@xxxxxxxxxx
>Subject: Re: Regular maintenance Defrag
>Date: Mon, 10 Dec 2001 06:53:04 -0800 (PST)
>
>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
> > >
> > >
> > >
> >
> >
>
>
>__________________________________________________
>Do You Yahoo!?
>Send your FREE holiday greetings online!
>http://greetings.yahoo.com