Anyone else have charts freeze on 5/21?

[Tarkus11]

This is the 1st time I have experienced lock-ups. Using beta15.

[NinjaTrader_JoshP]

Tarkus11,

Can you please be more descriptive as to what kind of chart you have open? Also, what were you attempting to do prior to the lockup? Anything in the Control Center logs? Thank you.

[kdoren]

I also had several (3 or 4) freezes today that I had not been seeing before. No useful information in the log or trace files. It happened shortly after starting NT7b15 and connecting to IB. I think it was trying to refresh the charts with new data loaded from the feed; the charts went blank and never repainted. even rebooting didn't really fix the problem, but later it started working.

[Tarkus11]

I also had several (3 or 4) freezes today that I had not been seeing before. No useful information in the log or trace files. It happened shortly after starting NT7b15 and connecting to IB. I think it was trying to refresh the charts with new data loaded from the feed; the charts went blank and never repainted. even rebooting didn't really fix the problem, but later it started working.

Thx Josh - I am using tick and minute charts. Shutting down some of my charts alleviated some of the problems, but I noticed that the chart update was still lagging my IB DOM. This is the first time it has lagged so much, so I will have to keep an eye on it.

kdoren - The chart update with the IB connection seemed to lag, which was odd because IB bundles ticks to mitigate data-flow jams. I have another feed that sends all ticks, so I expected that one to maybe lag, but not the IB one. I have also found that the recalc time can be quite long on the charts when loading. They remain blank for a while and it may look like it is frozen. Bringing up the Task Manager will show the CPU cranking, so it is doing something, even though the process manager may say 'Not Responding'. I find it can take several minutes to finish loading, and even then if you click on a tab to bring a minimized chart to the forefront, its like it calcs that one chart from scratch again - though that is only after startup. That issue goes away after it is running for a while.

BTW - this is a problem when changing anything on a chart - the recalc time. I realize that there might be efficiency in treating the entire chart and everything on it as one object, but the long recalc time when changing even a color on an indicator frankly may wipe out any 'time-saving' benefits. Removing an indicator is fast and easy. Adding/changing one is not.

[NinjaTrader_JoshP]

Tarkus11,

Sounds like this is indicator coding performance. I suggest you check the indicator code for heavy calculations and try to optimize the indicator code. Please be sure to use bars lookback at 256 to help save some memory as well. Decreasing chart lookback will speed things up as well to decrease the number of calculations needed.