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Thanks Thomasz. Thanks Terry.
What is the status of a minimized window? My impression is that it takes up
as much CPU as a window that opened for display. Is that the case?
----- Original Message -----
From: "Tomasz Janeczko" <amibroker@xxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, November 18, 2005 11:44 AM
Subject: Re: [amibroker] Graphics performance question
> Hello,
>
> It all depends on many factors including
> a) complexity of the formulas you use
> b) length of data used and number of bars visible
> c) screen resolution / color depth
> d) 2D graphic card performance / drivers / amount of memory on the card,
> etc
>
> As for a) and c) - for example
>
> "Price all in one" formula shipped with AmiBroker
> that plots price candlesticks, 3 moving averages, bollinger bands, and
> volume chart
> takes about 0.008 sec when run on AthlonXP @1.8GHz clock speed when
> applied to 6000 daily bars.
> It takes 0.009 sec when applied to 60000 1-minute bars if it is zoommed it
> and
> can take as much as 0.4 sec when zoomed-out max (all bars visible).
>
> As you can see timings depend largely on amounts of data that need to be
> processed.
> All built-in formulas are written in optimum way so they take advantage of
> QuickAFL feature that allows to use only visible bars to speed up
> processing.
>
> However some user's formulas use functions like for example Cum() that
> by nature require all bars. If your formula uses Cum() then, it forces
> using all bars
> regardless of what visible bars are. This greatly increases execution
> time.
> To find out how many bars your formula requires use Formula Editor,
> Tools->CHECK
> menu. It will display the number of past and future bars required.
>
> As for c) and d) depending on screen resolution / color depth / graphic
> card
> certain operations may be hardware accelerated and some not. You may play
> with these settings to find out optimum.
>
> By the way: next version of AmiBroker will include the "chart timing
> display" feature
> that display time spent in execution and drawing each chart pane, to help
> you
> finding out which pane is causing biggest CPU load.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Charles Stangor" <cstangor232@xxxxxxxxxxxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Friday, November 18, 2005 5:28 PM
> Subject: Re: [amibroker] Graphics performance question
>
>
>> What I discovered that is curious to me is that the CPU usage is involved
>> in
>> displaying the charts, not running the AFLs. My CPU usage ranges from
>> 40-70
>> percent max when AB is minimized -- the autotrading is working fine. But
>> when I maximize AB the CPU goes immediately to 100%
>>
>> In any case, I'm going to need a deskop! How would the following specs
>> from
>> Dell compare to a dual core Athlon64?
>>
>> Description: Dell Dimension 5150 Series. Intel(r) Pentium(r) 4 Processor
>> 630 w/HT Technology (3.0GHz,800FSB)
>>
>> Is the the dual-core from Intel a lot faster than a P4?
>>
>> Thanks!
>>
>> chuck
>>
>>
>> ----- Original Message -----
>> From: "Gino" <ggen@xxxxxxxxxxxxx>
>> To: <amibroker@xxxxxxxxxxxxxxx>
>> Sent: Friday, November 18, 2005 11:03 AM
>> Subject: RE: [amibroker] Graphics performance question
>>
>>
>>> Yep, time for a dual-core Athlon64.
>>>
>>> I am upgrading my box as we speak. Just waiting for the new motherboard,
>>> unfortunately on backorder.
>>>
>>> If you have any questions, just ask, hope I can help.
>>>
>>> Gino
>>>
>>>
>>> -----Original Message-----
>>> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On
>>> Behalf
>>> Of Charles Stangor
>>> Sent: Friday, November 18, 2005 10:44 AM
>>> To: amibroker@xxxxxxxxxxxxxxx
>>> Subject: Re: [amibroker] Graphics performance question
>>>
>>> Gino. The answer you gave me is correct - 100% CPU. Solution is a
>>> faster
>>> computer or fewer windows I suppose? Thanks
>>>
>>>
>>> ----- Original Message -----
>>> From: "Gino" <ggen@xxxxxxxxxxxxx>
>>> To: <amibroker@xxxxxxxxxxxxxxx>
>>> Sent: Friday, November 18, 2005 10:18 AM
>>> Subject: RE: [amibroker] Graphics performance question
>>>
>>>
>>>> Hey Charles,
>>>>
>>>> You can check your "CPU Utilization" - most probably your CPU is
>>>> "saturated", running at 90+ to 100% utilization.
>>>>
>>>> Go to Task Manager, Performance and you will see a graph of your CPU.
>>>>
>>>> Hope this will help.
>>>>
>>>> Best regards,
>>>>
>>>> Gino
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On
>>>> Behalf
>>>> Of Charles Stangor
>>>> Sent: Friday, November 18, 2005 9:44 AM
>>>> To: amibroker@xxxxxxxxxxxxxxx
>>>> Subject: [amibroker] Graphics performance question
>>>>
>>>> I have 6 charts open, each running 3 1-minute AFLs. I'm at the point
>>>> that
>>>> the windows display very slowly, if at all. The graphics from prior
>>>> windows
>>>>
>>>> sometimes do not close when I switch to AB, so this seems like a video
>>>> memory problem (as far as I can tell the execution of the AFLs is OK).
>>>> I'm
>>>>
>>>> wondering if anyone else has dealt with this issue.
>>>>
>>>> Thanks in advance
>>>>
>>>>
>>>>
>>>>
>>>> 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 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 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 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 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 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 other support material please check also:
> http://www.amibroker.com/support.html
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
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