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NT7 system lagging with multiple windows
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NT7 system lagging with multiple windows

  #11 (permalink)
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Seanbeshore1 View Post
NinjaTrader support was of no help to me as they are not familiar with indicators supplied by this site. I started a thread here in hopes of getting a different perspective. NT support simply told me to remove indicators that may be causing the issue....however its hard to determine what combination of indicators is causing the issue. The indicators when used on there own do not cause any lagging issues.


Usually the indicators do not interfere. This means that the CPU load caused by a specific indicator is the same, whether it is used alone or in combination with other indicators. Of course several badly coded indicators can add up to exceed the threshold.

There are a few things that you can do to reduce CPU load

- first use all your indicator with CalculateOnBarClose = true
- second do not change the display updated interval to a lower value than 0.5 sec

You may also post the source code of the indicators - or in case that you have downloaded them from this forum, post a link to the source file - and we should be able to tell you which of the indicators cause the CPU load. A general statement does not help. We need to go into details.


You can further conduct individual tests for each indicator to determine the CPU load as follows:

-> download Microsoft Process Explorer
-> download one week of replay data for ES 12-15 (it is free)
-> open a virgin chart for ES 12-15
-> add the indicator to the chart and set it to CalculateOnBarClose = false (maximum damage)
-> start market replay at maximum speed (x 500)
-> open Process Explorer and watch the CPU load for all kernels of your processor

When played at speed x 500, the regular session for ES should take about 50 seconds. If it takes a few minutes to complete you know that you will be running into problems.

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  #12 (permalink)
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Best solution

I to use 4 screens and look at a lot of data, NT7 is designed to stuff all processing through 1 core and is very laggy. There are a few things I have learnt that offset this and just about make NT7 well half usable...roll on NT8.....or is that just a myth

I got this info from the Jigsaw site where you will find in detail how to do it all in the forum (Petes a saint):

You have to minimise disk writes so as not to bombard disk with unimportant stuff.

1 - If you dont need market reply data, turn it off
2 - Disable search indexing (youtube video)
3 - Download Process hacker:

Go to Processes tab

A - Right click Ninja, Affinity, deselect, select 1 core (I the 2nd)

B - Right click Ninja, Priority, High

C - Right click Ninja, I/O Priority, High

Once you have done this, get task manager up and you will be able to see Ninja raping the chosen core and you will be giving it the best chance to not let you down by clogging your disk up.

You will have to do this every time you start Ninja, but it only takes 30 seconds. Hope this helps


Last edited by traderadam; October 31st, 2015 at 07:47 AM.
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  #13 (permalink)
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traderadam View Post
I to use 4 screens and look at a lot of data, NT7 is designed to stuff all processing through 1 core and is very laggy. There are a few things I have learnt that offset this and just about make NT7 well half usable...roll on NT8.....or is that just a myth

I got this info from the Jigsaw site where you will find in detail how to do it all in the forum (Petes a saint):

You have to minimise disk writes so as not to bombard disk with unimportant stuff.

1 - If you dont need market reply data, turn it off
2 - Disable search indexing (youtube video)
3 - Download Process hacker:

Go to Processes tab

A - Right click Ninja, Affinity, deselect, select 1 core (I the 2nd)

B - Right click Ninja, Priority, High

C - Right click Ninja, I/O Priority, High

Once you have done this, get task manager up and you will be able to see Ninja raping the chosen core and you will be giving it the best chance to not let you down by clogging your disk up.

You will have to do this every time you start Ninja, but it only takes 30 seconds. Hope this helps

Thanks for this detail...been struggling with NT7 for a while with it's speed, maybe it's because I only have 8GB of RAM...??? Gotta try this out this week!

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  #14 (permalink)
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Thanks FAT TAILS for the insight. I have narrowed it down to 3 indicators I've imported from the forum. Each causes chart lag on their own. I've changed system parameters as outlined and still have chart lag. I will most likely need to hire someone to have these three indicators recoded. The VolStop indicator has a known issue of not being able to save default colors.

BMT WAVE
https://futures.io/download/vip_elite_circle/203-download.html?view

mkSupDemZones
https://futures.io/elite-automated-ninjatrader-trading/32758-want-your-ninjatrader-strategy-created-free-95.html#post476841

VolumeStopNT7
https://futures.io/download/ninjatrader-7/indicators/776-download.html?view

Best,

Sean
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  #15 (permalink)
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.


Last edited by matthew28; November 4th, 2015 at 09:50 AM.
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  #16 (permalink)
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limit number of load days to 3 see if that help

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  #17 (permalink)
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Cory, My indicators require at least 14 days of history...thanks for the input.

Best,

Sean
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  #18 (permalink)
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Answer
This post has been selected as an answer to the original posters question Answer


Seanbeshore1 View Post
Cory, My indicators require at least 14 days of history...thanks for the input.

You could run his in a chart with 3 days and yours in a chart with 14 days.

Travel Well
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  #19 (permalink)
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The BMT wave indicator was fixed in 2010 (by me), so nothing to be done there. The swing indicator, if running COBC false, does not have anything to prevent processing of redundant intrabar ticks (same price as preceding tick). It's a total waste to process redundant intrabar updates. Generally at least 70% of intrabar ticks are redundant. Best bet would be to make sure swing indicator is running on COBC true.

Be careful about setting Ninjatrader priority to high, can bring your PC to a standstill.

Your strategy will probably work MUCH better in NT8 with its multi core multi threading.

Don't forget about the Ninjatrader setup hints in Post #7.

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  #20 (permalink)
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Many thanks, Zondor. Will these indicators, among others, be easily converted to NT8? Love your quotes BTW.

Best,

Sean
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