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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@xxxxxxxxx>
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@xxx> 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@xxx>
>> 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
>
>
>
------------------------------------
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