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Right, and thanks Is there a way to prevent all bars that are loaded from
being processed online when the IB plugin is running? I was wondering if
setting a range might do that, but I think not. Alternatively, I think I
should delete prior days bars while I am day trading. Thanks
----- Original Message -----
From: "Tomasz Janeczko" <amibroker@xxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Friday, November 18, 2005 12:04 PM
Subject: Re: [amibroker] Graphics performance question
> 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
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
> 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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