|
PureBytes Links
Trading Reference Links
|
Thanks Tomasz, but I'm as sure as I can be it's not my formula's...
I have checked them before, but I checked again on live charts as you
suggested... my slowest formula is about 0.05sec and that uses about
three plotforeign() statements.
I have found that symbol linking of charts seems to cause them to slow
down... Would that be correct...? And when I say 'slow down' I don't
mean chart re-draws... more general operation, like scrolling on
charts, cursor clicks, menu pop up & right click menus etc...
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
> Hello,
>
> Chart refresh of ZERO means to refresh as often as CPU allows
> so it inherently leads to higher load. That is not degradation
however but
> rather speed up as chart are refreshed more often.
>
> However if on single core you are getting more than 70% CPU load average
> it may mean that your formulas are probably not fine-tuned for
real-time performance.
>
> EVERY formula used for real time trading should execute below 0.1
second.
>
> You should display the timing of your chart
> (Tools->Preferences->Miscellaneous "Display chart timing).
> If your formula execution takes ANYTHING more than 0.1 sec to execute
> it means that the formula you are using is written wrong
> (inefficiently).
> Formulas shipped with AB execute in less than 0.01 sec.
>
> Run
> AFL Editor, Tools->Check and profile to find bottleneck of your
formulas.
>
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "sidhartha70" <sidhartha70@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Tuesday, June 10, 2008 1:18 AM
> Subject: [amibroker] Re: Tracking down performance degredation in AB
>
>
> > Already using 5.10 Tomasz.
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@> wrote:
> >>
> >> Which version are you using?
> >> You should upgrade to 5.10 for best results.
> >>
> >> Best regards,
> >> Tomasz Janeczko
> >> amibroker.com
> >> ----- Original Message -----
> >> From: "sidhartha70" <sidhartha70@>
> >> To: <amibroker@xxxxxxxxxxxxxxx>
> >> Sent: Monday, June 09, 2008 9:29 PM
> >> Subject: [amibroker] Re: Tracking down performance degredation in AB
> >>
> >>
> >> > Actually, I think I just tracked it down... seems obvious now. I
> >> > recently changed the 'Intraday" refresh interval in Preferences
from 3
> >> > secs to zero...
> >> >
> >> > However, I only have about 4 symbols feeding live from IQ
Feed... and
> >> > I'm running a beast of a PC... and the fasted internet connection
> >> > available in the UK... the net effect on my processor useage seems
> >> > negligable... so I'm kinda surprised that it would degrade
performance
> >> > so much...
> >> >
> >> > Anyone else experienced this...? Should I be suprised or maybe
there
> >> > is something else amiss...??
> >> >
> >> > Many Thanks
> >> >
> >> > --- In amibroker@xxxxxxxxxxxxxxx, "sidhartha70" <sidhartha70@>
wrote:
> >> >>
> >> >> HI All,
> >> >>
> >> >> Been using AB for a couple of months now... I seem to have
noticed a
> >> >> performance degredation on the AB's use the past couple of days. I
> >> >> can't see that I've added antyhing in particular that would cause
> > this.
> >> >>
> >> >> Any ideas towards tracking down performance degredation in AB...?
> >> >>
> >> >> Thanks
> >> >>
> >> >
> >> >
> >> >
> >> > ------------------------------------
> >> >
> >> > 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
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
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|