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Hello,
I just wanted to let everyone know that I found how to fix this
problem. Somehow my chart had become corrupted in such a way that
every edit I made would progressively add a little bit more to the
time it took to "Apply Indicator". I was up to 15 minutes today
before I found it was not my AFL that was doing it. AB Support tried
my AFL and let me know that it was not the problem which got me
looking in the right direction. Copying my AFL to another sheet
fixed the problem. It actually takes less than a second to do this
operation now.
Best regards,
Dennis
On Nov 8, 2007, at 9:09 PM, Dennis Brown wrote:
> Tomasz,
>
> Thank you for your response on the forum. Since this problem seems
> to have gone way beyond the purpose of the forum at this point, I am
> switching to AB Support to debug this issue. I have included this
> whole thread as background with that email.
>
> But to answer your questions here for the completeness of this thread:
>
> Yes, I am talking about "Apply Indicator" taking so long and it did
> not make sense to me either that it should take so long.
>
> If I do a "Verify syntax" it takes less than a second.
>
> Normal operation mode is .25 seconds and resulted in the following:
>
> Using constant volume bar mode resulted in an "Apply" time of 8.5
> minutes.
> Switching to daily mode resulted in an "Apply" time of 9.5 minutes --
> so not an improvement.
> Commenting out ALL 2700 lines of my AFL code resulted in an apply
> time of 3 minutes.
>
> The Profiler runs instantly and shows .01 seconds execution time, but
> consists of only 6 functions that are checked because most of the AFL
> is conditionally executed in indicator mode only.
>
> I edited out my indicator mode wrapper and used the Profiler again.
> This time it showed the results on the screen for about 2 seconds,
> then the window disappeared and none of the AB windows could be
> selected, as if the profiler model dialog box was still open but now
> invisible. I was able to catch the AFL run time from the window
> before it disappeared. One time it said .45 seconds, another time it
> was 1.1 seconds.
>
> I took screen shots of the Task Manager while it is doing an "Apply
> indicator" and sent them along with my AFL code to the AB support
> email.
>
> Thank you for all you do for us.
> Best regards,
>
> Dennis
>
> On Nov 7, 2007, at 4:26 PM, Tomasz Janeczko wrote:
>
>> Dennis,
>>
>> If you speak about "Apply indicator" - it should be sub-second time.
>> Minutes mean that something is wrong.
>> "Applying indicator" executes the code for ALL bars with selected
>> symbol and selected interval.
>>
>> Your formula needs to be doing some weird things if that takes that
>> much time.
>> Use built in Profiler (in 5.0.1) to find out which functions that
>> you are using cause such long times.
>>
>> Other than looking at your formula I can only suggest to switch to
>> daily interval when applying the code during editing.
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>> ----- Original Message -----
>> From: "Dennis Brown" <see3d@xxxxxxxxxxx>
>> To: <amibroker@xxxxxxxxxxxxxxx>
>> Sent: Wednesday, November 07, 2007 6:24 PM
>> Subject: Re: [amibroker] Why does it take so long to apply edits?
>>
>>
>>> Ok,
>>>
>>> This has totally frustrated me. I am ready to abandon the built-in
>>> AFL editor. It is taking forever to debug code when I have to wait
>>> 4-8 minutes for every typo.
>>>
>>> However, I need to keep my AB chart running while editing the AFL
>>> (because my AB startup setup is complicated).
>>>
>>> Can I use an external editor as a *direct* replacement for the
>>> built-
>>> in editor?
>>> Alternatively, is there a way to disable the checking done by the
>>> AFL
>>> formula editor when applying?
>>> Actually the syntax checking is fast, it is what it does after that
>>> that takes so long.
>>>
>>> Am I the only one who sees this problem?
>>>
>>> Best regards,
>>> Dennis
>>>
>>> On Oct 30, 2007, at 10:21 AM, Dennis Brown wrote:
>>>
>>>> Tomasz,
>>>>
>>>> As time has gone on, I have increased the complexity of my AFL to
>>>> 2500 lines and my database to 200K. The time to apply edits has
>>>> also
>>>> gone up to 8 minutes even though I have wrapped the code so that
>>>> most
>>>> only executes in indicator mode. Finally today I became frustrated
>>>> enough to track down the offending AFL. I started by commenting
>>>> out
>>>> my entire AFL. Time to apply --4 minutes for 2500 lines of
>>>> comments! I am at a loss for how to track down what is causing the
>>>> long apply edits now. Do you know how I might approach this?
>>>>
>>>> Best regards,
>>>> Dennis
>>>>
>>>> On Sep 4, 2007, at 9:16 PM, Dennis Brown wrote:
>>>>
>>>>> Tomasz,
>>>>>
>>>>> Thank you for your insights.
>>>>>
>>>>> I wrapped my code today as you suggested below and in an earlier
>>>>> post
>>>>> today, so unwrapped are only the uncalled functions and a few
>>>>> variables initialized to keep out syntax errors. I am using a
>>>>> 90,000
>>>>> bar 5 second database, but the chart timeframe is run at about
>>>>> 7,000
>>>>> bars, and my complex loop processing is limited by parameter to
>>>>> less
>>>>> than 2,000 bars. Changing that parameter to 200 bars reduces the
>>>>> execution time from 1 second to .2 seconds, but as you suggested,
>>>>> does not seem to have much affect on the apply time --which now
>>>>> varies from 35 to 65 seconds. I also tried different tickers with
>>>>> fewer bars (30,000) and it did made the apply time longer. So I
>>>>> would say my edit apply time is no longer dependent on my database
>>>>> size or AFL complexity.
>>>>>
>>>>> Even though I am glad to have under a minute apply time now, it
>>>>> seems
>>>>> as though there is still something else that is slowing it
>>>>> down. Do
>>>>> any other possibilities come to mind?
>>>>>
>>>>> One thing that I noticed, is that it is a consistent 35 seconds to
>>>>> apply when I start up AB and just do a lot of applies. Switching
>>>>> symbols, more edits, enabling complex AFL sections, etc. cause the
>>>>> time to lengthen up to the 55 second area and it does not go back
>>>>> down until I quit AB. I am guessing that these things take memory
>>>>> that does not get released and it reduces the RAM available for
>>>>> processing the apply.
>>>>>
>>>>> PS. When I turn on ALL of my formula (enabled in sections with
>>>>> multiple timeframes and indicators) it takes about 5 seconds to
>>>>> execute with all the speed-up tricks so far --which is why I am
>>>>> obsessed with getting the most speed I can out of AFL by clever
>>>>> programming tricks.
>>>>>
>>>>> Best regards,
>>>>> Dennis
>>>>>
>>>>> On Sep 4, 2007, at 6:00 PM, Tomasz Janeczko wrote:
>>>>>
>>>>>> Dennis,
>>>>>>
>>>>>> If you are "applying" the code - it is for the first time
>>>>>> executed
>>>>>> with ALL bars, regardless of QuickAFL and SetBarsRequired
>>>>>> settings.
>>>>>>
>>>>>> Now *if* your formula is complex and uses looping and you are
>>>>>> using
>>>>>> for example tick database with hundreds of thousands of bars
>>>>>> it may take a while. Usually it is non-issue as people are not
>>>>>> using such complex formulas.
>>>>>> (1 second is *very* long for execution under normal
>>>>>> circumstances.
>>>>>> My formulas usually execute well below 0.1 sec).
>>>>>>
>>>>>> You may wrap your code into
>>>>>>
>>>>>> if( Status("action")==actionIndicator)
>>>>>> {
>>>>>> ...
>>>>>> }
>>>>>>
>>>>>> and this will prevent this effect.
>>>>>>
>>>>>> Best regards,
>>>>>> Tomasz Janeczko
>>>>>> amibroker.com
>>>>>> ----- Original Message -----
>>>>>> From: "Dennis Brown" <see3d@xxxxxxxxxxx>
>>>>>> To: <amibroker@xxxxxxxxxxxxxxx>
>>>>>> Sent: Tuesday, September 04, 2007 11:25 PM
>>>>>> Subject: [amibroker] Why does it take so long to apply edits?
>>>>>>
>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> I have noticed that the time it takes to apply an edit to my
>>>>>>> large
>>>>>>> indicator AFL takes a long but variable amount of time. It
>>>>>>> might
>>>>>>> take 15 seconds one time and 3 minutes another time. It usually
>>>>>>> takes about 2.5 minutes to apply an edit, though if there is a
>>>>>>> syntax
>>>>>>> error, it comes back right away. The AFL itself has an
>>>>>>> execution of
>>>>>>> about 1 second per pass and starts up right away from scratch.
>>>>>>>
>>>>>>> I was wondering if there were any general rules that I should be
>>>>>>> aware of that would make applying edits faster and more
>>>>>>> consistent?
>>>>>>>
>>>>>>> Another thing that is interesting is that if I click anywhere on
>>>>>>> the
>>>>>>> chart or UI while the edit is being applied, it runs even
>>>>>>> slower,
>>>>>>> and
>>>>>>> always resets all the params.
>>>>>>>
>>>>>>> Insights anyone?
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Dennis
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> 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
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> 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
>>
>>
>>
>
>
>
> 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
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