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Tomasz,
Last night I wrote a small monitoring chart that runs every second and
checks the value of a static variable and decrements it. My main
chart sets this static variable to 5 every pass. If the value becomes
negative, the monitor chart says "Chart Stalled".
This morning at 9:45 ET, It said my chart was stalled and indeed it
was. Clicking on the refresh chart button got it running again (I was
in a trade again).
This proves that the AFL on my main chart had stopped running, while
the AFL on the monitor continued to run.
So now the question becomes, under what conditions can a chart cease
to refresh?
-- I had RequestTimedRefresh(0) on the main chart. Now changed to (0,
0) for a test.
-- The main chart takes 0.4 seconds to execute today using 5000 1
minute bars of ES (yes, I do a lot of parallel indicators).
PS. I would have switched to Support emails, except since there are
others following this so I have kept posting here.
Best regards,
Dennis
On Jul 1, 2008, at 1:00 PM, Dennis Brown wrote:
> Tomasz,
>
> I can add a little more information to this problem now.
>
> This morning about 11:45 ET my chart stopped again.
> I was trading ES and the market was fairly fast.
> I have a Bar%Done graph that advances every second.
> It takes the start time of the last bar and compares it to Now.
> It stopped advancing.
> I clicked to another chart tab and back again.
> That made it advance one time, but would not continue running.
> Clicking on the refresh chart made it go again.
>
> So I think that my AFL formula stopped running.
>
> I will verify that by other means the next time.
>
> Best regards,
> Dennis
>
>
> On Jun 28, 2008, at 9:08 AM, Dennis Brown wrote:
>
>> Tomasz,
>>
>> Thanks for the AFL suggestion.
>>
>> My Refresh Interval in Prefs is set to 1 at this time. In the past I
>> have also used 1, 2, or 3 settings. However, I have a
>> RequestTimesRefresh() that is set via parameter in the chart. At his
>> time it is set to zero, though this has also happened with it set to
>> other numbers (usually 1). I adjust these numbers depending on how
>> much history I am using at the time in order to keep them higher than
>> the actual time it takes to refresh the chart, so that the UI keeps
>> working.
>>
>> This has happened to me for a couple of years and my charts and AFL
>> have evolved to significant complexity over that time, along with
>> changing computers and data vendors.
>>
>> I don't recall the problem happening when I was actively using the UI
>> on the chart. It usually happens when the chart is just quietly
>> updating and then just stops updating. I am usually just in the mode
>> of waiting for something to happen on the charts while I am waiting
>> to
>> get into or out of a trade. I can not recall my previous operations,
>> but I do a LOT of trend line studies. I doubt this problem could be
>> easily reproduced --otherwise you would have customers complaining
>> all
>> over the place.
>>
>> I can tell you that clicking on most UI buttons or pulldown menus or
>> clicking on the chart does not fix it. Only clicking on the Refresh
>> button fixes it.
>>
>> I will take your AFL suggestions and some others and see if I can get
>> better information about what is happening for the next time. Since
>> it does not happen often, it is not so bad for me to click the
>> Refresh
>> button when it happens. The bad part is not realizing that it is not
>> refreshing for too long and missing an important price move.
>>
>> Hopefully the next time it happens I will not be in a trade and can
>> take my time to investigate it better.
>>
>> Best regards,
>> Dennis
>>
>> On Jun 28, 2008, at 4:29 AM, Tomasz Janeczko wrote:
>>
>>> Dennis,
>>>
>>> You can use
>>> TextOut( ""+Now(), Status("pxwidth")-200, Status("pxheight")/2 );
>>>
>>> To display last refresh time - this may help detecting such problem.
>>> It never happened on my end, but I would appreciate if someone
>>> provides more
>>> details under what circumstances it happens (what is your Prefs
>>> "Refresh interval",
>>> what do you do before that happens (use particular drawing tool
>>> or ...?
>>> does pressing F5 solves the problem ? I don't know...
>>> just try to provide information that would make this reproducible).
>>>
>>> Best regards,
>>> Tomasz Janeczko
>>> amibroker.com
>>> ----- Original Message -----
>>> From: "Dennis Brown" <see3d@xxxxxxxxxxx>
>>> To: <amibroker@xxxxxxxxxxxxxxx>
>>> Sent: Saturday, June 28, 2008 3:37 AM
>>> Subject: [amibroker] When AFL just stops updating the chart now and
>>> then...
>>>
>>>
>>>> Hello,
>>>>
>>>> I have something that happens once every few days with my RT
>>>> charts.
>>>>
>>>> At some point in the day, the chart stops updating. I also have
>>>> getRTData() functions in my AFL that also stop.
>>>>
>>>> I don't know if it is the data feed that stops handing the quotes
>>>> to
>>>> AB, or if XP is not giving the data, or if the AFL loop stops
>>>> running. Everything looks normal, but I notice that my broker's
>>>> charts have moved ahead and my AB charts have stalled (My broker's
>>>> charts are prone to stalling in fast markets and my AB charts keep
>>>> on
>>>> ticking). This can be disconcerting when you are in a fast trade
>>>> and
>>>> you go blind without realizing it.
>>>>
>>>> I am using DTN IQFeed, but the same thing happened with eSignal in
>>>> previous years. The data feed plug-in indicates everything is
>>>> green
>>>> and working.
>>>>
>>>> Clicking on the chart refresh button starts the chart running
>>>> again.
>>>>
>>>> I am usually in a panic when this happens, so I have not been able
>>>> to
>>>> properly go through debug steps to isolate the problem area.
>>>>
>>>> So my questions are:
>>>>
>>>> 1. Does anyone know the root cause of this?
>>>> 2. Is there a way to detect that the chart has stopped updating
>>>> (other than by eye)?
>>>> 3. Is there a way to automatically jump start the updating again
>>>> when
>>>> it happens?
>>>>
>>>> Thanks for any insights.
>>>>
>>>> If nobody can help, I will ask support.
>>>>
>>>> Best regards,
>>>> 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
>
>
>
------------------------------------
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For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
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For other support material please check also:
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