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If in full mode your indicator execution time exceeds
refresh time even slightly, CPU consumption jumps to 100%
and AB response is really slow.
Try slow down refresh time by 1 second i.e. from 3 seconds
to 4 (Tools | Preferences).
Joseph Biran
____________________________________________
-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx
[mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Tomasz
Janeczko
Sent: Sunday, May 11, 2008 7:14 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] How To Restore Formula Speed?
Hello,
Use
AFL Editor,
Tools->Check and Profile
to find the bottleneck in your code.
Most often people are
calling the same funciton over and over many times when
they should call it ONCE and store the result in variable.
This the most basic improvement can be applied to 99% of
formulas written and posted here to get a lot more speed.
The other thing is that you move all array function calls
OUTSIDE
loops. That's second principle: *never* call array function
inside loop , unless you are doing something like iterating
through multiple symbols. But NEVER call array funcitons
inside per-bar loop.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "ondrej.uhlarik" <ona@xxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, May 11, 2008 2:44 PM
Subject: [amibroker] How To Restore Formula Speed?
> Hello,
> I have programed quite a complicated indicator in AFL.
When I load it
> in a pane it significantly slows down scrolling speed and
reaction
> speed in general. That I find very annoying, so I made a
Toggle
> parameter to switch between 2 modes: Basic (which does not
show so much
> but does not affect speed so much either) and Advanced
(which shows
> everything and affects speed a lot). Now the problem is as
follows:
> I insert the indicator in a pane in the Basic mode and the
speed is ok.
> Then I switch to the Advanced mode and the speed gets
worse. Then I
> switch back to the Basic mode but the speed remains bad,
i.e. the
> original speed is not restored. It seems that the Advanced
data are
> still loaded in some memory cache and affect speed of the
indicator
> even if I switch back to the Basic mode. Is there any
chance to clear
> or reset the data loaded in memory (or whatever) without
removing the
> indicator from the pane and re-inserting it back?
> Thank you for your ideas, and please keep in mind that I
am a beginner
> in programing :)
>
>
> ------------------------------------
>
> Please note that this group is for discussion between
users only.
>
> To get support from AmiBroker please send an e-mail
directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check
DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
> Yahoo! Groups Links
>
>
>
------------------------------------
Please note that this group is for discussion between users
only.
To get support from AmiBroker please send an e-mail directly
to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check
DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
Yahoo! Groups Links
------------------------------------
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
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