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Hello,
No, not as much, because actually display area is zero but formula is still executed
(if real-time data stream in) so, if it is complex enough it may take similar time.
Minimized window in non-real-time situation does not take any CPU cycles.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Charles Stangor" <cstangor232@xxxxxxxxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, November 18, 2005 6:00 PM
Subject: Re: [amibroker] Graphics performance question
> 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
>>
>>
>>
>>
>>
>>
>
>
>
>
> 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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