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sidhartha70,
i guess the difference here is the number of bars you are using.
In my main database I am running 1 minute databases and would like to be able to see several years worth of data. This requires a large number of bars loaded, on the otherhand, the other database will only require a few days worth - just enough to run some up-to-date averages. The latter will be used for realtime monitoring only.
I think I resolved the crash with IQFeed. Initially I was running 2 instances of AB using RUNAS. The reason is that I wanted to have different preferences on each instance (which as far as I know cannot be done if running as the same user), however when these two talked to the same instance of IQFeed, IQFeed crashes frequently.
I then repeated the test by launching 2 instances of AB as the same windows user and I have not crashed until now. This was only in the last few hours of the US Market yesterday so I will carry on testing today.
cheers,
eToke
--- In amibroker@xxxxxxxxxxxxxxx, "sidhartha70" <sidhartha70@xxx> wrote:
>
> eToke,
>
> I use something approaching your setup, but under one instance of AB. I have 8 charts across 2 monitors. 5 different layout which allow me to switch very quickly depending on exactly what I want to look at.
>
> My AB runs like a song... I wish I could utilize more of the 8 cores I have on my PC, but it does run quickly.
>
> The single biggest factor in processing speed is the number of bars in your DB. In my intraday DB which I use for day trading I have 25,000 bars max.
>
> How many bars do you have in your DB...?
>
> --- In amibroker@xxxxxxxxxxxxxxx, "etoketrader" <etoke@> wrote:
> >
> > I was thinking the advantages would be the following:
> > 1) The split of processing load as you mention
> > 2) In order to run market internals, I need to display several charts for several instruments at once:
> > - Tick
> > - AD Line (this needs a few instruments actually to build correctly)
> > - Interest Rates (that's 5 yr 10yr and 20yr
> > - SPY/QQQQ/IWM
> > - Market Sectors (XLU,XLP,XLE etc..)
> > ...and so on. This produces a huge load on the total chart refresh rate, making subsequent operations such as scanning, switching symbols and so on, slower. I was thinking that if I could separate all this stuff into another instance (separate database with ONLY required symbols, much shorter history such as 10 days instead of 10 years!), then I can get this realtime display and have my main AB running like a song.
> >
> > I have tried it this US market morning and THE PROBLEM I am encountering, however is not AB! IQFeed client is crashing on me when i try this configuration. Apparently it doesn't like it. I am not sure whether to continue the tests or find another route.
> >
> > cheers,
> > eToke
> >
> >
> >
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "sidhartha70" <sidhartha70@> wrote:
> > >
> > > eToke,
> > >
> > > What exactly is the advantage of running two instances as opposed to having more chart windows under the one instance...?
> > >
> > > The only advantage I can see is that if you are running multiple cores it splits the processing load more effectively...??
> > >
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "etoketrader" <etoke@> wrote:
> > > >
> > > > I normally run one instance of AB which displays my "main" section - charts on the instrument I am working on at the moment, as well as a "market internals" section which shows charts of the major indices, tick, trin etc....
> > > >
> > > > I am trying a small experiment in order to see whether things run smoother. I am trying to run 2 instances of AB for the two sections I mention above. I am not sure whether this will make things better but currently the fact that I am simultaneously charting several symbols at once is putting additional load on my setup.
> > > >
> > > > My question: Some symbols exist in both instances. Will the fact that the two instances are connected to the same IQFeed and that separate backfill requests are assigned to the same IQFeed instance mess things up or is it a good proposition to work this way?
> > > >
> > > > thanks and regards,
> > > > eToke
> > > >
> > >
> >
>
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