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  #1 (permalink)  
Old 07-23-2007, 09:07 AM
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MT4 memory usage

I noticed in my 'Task Manager' window that my platform 'Terminal.exe' is slowly increasing memory usage.

Anybody experienced the same thing and has ideas what can cause it and how to deal with it.

thanks

euro
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  #2 (permalink)  
Old 07-23-2007, 10:16 PM
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Hey European...are you using a .dll by any chance?

When I have just the terminal, I don't seem to notice this issue, but I have a .dll that I use. When I'm using that, then I notice the issue.

I'd be interested to hear if anyone else has had this problem...

BW
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  #3 (permalink)  
Old 07-23-2007, 10:18 PM
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Quote:
Originally Posted by european View Post
I noticed in my 'Task Manager' window that my platform 'Terminal.exe' is slowly increasing memory usage.

Anybody experienced the same thing and has ideas what can cause it and how to deal with it.

thanks

euro
yes, i've experienced it since build 207. sometimes memory usage goes to 100% with the terminal. don't know what to do about it.
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Old 07-24-2007, 01:28 AM
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I've noticed that recently too. Here is a cool link to a freeware program. highly rated and I would agree..

YourWare Solutions - Free Software Downloads and Software Reviews - Download.com
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Old 07-24-2007, 02:32 AM
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Thanks to this thread! No wonder, I thought what's wrong with my computer that suddenly become slow and Windows start incresing its virtual memory. I thought its because I open too many charts. Any solution for this? Thx.

Cheers,
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  #6 (permalink)  
Old 07-24-2007, 04:23 AM
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Build 204

Ever since Build 204 MT4 has sucked (and I love MT4).

It's becoming slower, the PF usage heavier, when the market starts to really move and therefore with each tick the station references all indicators currently on chart, the CPU maxes out to 100%.

Since 204, the optimizing/backtest cut speed and took 4 times longer to do the same work it was previously.
What is really archaic is the fact that MT4 is not a multi-threaded application so you do not gain full advantage of running dual/quad core cpu's.

At the moment it's pitiful.

Archer
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Old 07-24-2007, 12:41 PM
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We have some thread about this here: http://www.forex-tsd.com/metatrader-...ild-203-a.html

But, also, we canīt scape to reality. We need to know whatīs going wrong.
In my experience CPU usage depends on broker youīre using between other things..

A broker with a high rate of change in quotes makes MT to calculate more often than one with less rate of change.
We know in forex this is possible.
IE: Broker A could update the quotes every 1 sec and broker B every 3. Meanwhile for broker A cpu must recalculate a lot of things every 1 second for broker B it must do every 3 seconds.

Another things is, when you start other charting software this application will start with a default number of bars, letīs say 500/1000.
A default MT install starts with 512000 in history and 65000 max bars in chart. Some users, even increase this numbers.

Another thing is what are you using, what indicator/oscillator, standard or custom.
Near 50% of custom indicators have some kind of bug.
Starting by errors in the idea of what is the indicator must do or behave. When the idea is copy the behavior of another indicator published in some magazine or book, written for another platform. Itīs amazing how much errors you can find. And you think youīre using ABC but in fact this ABC is far away from ABC original idea.

Last, we have programming mistakes/errors in the code made by the programmer and this is really hard to fix. Because every software have errors and because MQL community does not have some checking rules or robot website to get an Ok for the indicator you're developing.

MQL is not easy. You canīt cut and paste the code from last TASC and youīre will be sure itīs ok.

In my case I have to disturb Igorad every time.

We can love Metaquotes to give us a free product and we can hate for the poor support.
IMHO. Theyīre wasting resources in a online database without control. Mixing custom indicators exceptionally written with another "please, donīt post that" ones.
When the correct way it would be to choose 200 indicators for a repository and publish right next to RSI or Stochastic as custom indicator approved by Metaquotes. And the rest is custom and a user problem. As TS or ES does.

Also, there is poor control in what is posted in online database.

So, we mix all this things. A broker with a highly moving quotes, a user with a lot of bars in chart and maybe a poor written indicator and you will have 90% cpu usage.

Forgiving support problems. Letīs say this is Firefox Vs Explorer. What you would choose?
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  #8 (permalink)  
Old 07-25-2007, 04:59 PM
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i think it will consume more memory if we open many charts with lower time frame.charts with many indicators also will consume many memory as well
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Old 12-14-2008, 09:45 PM
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I had this problem. just uninstall mt4 and reinstall it again. then it flies!
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Old 12-19-2008, 12:56 PM
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I must agree with Linuxser regarding which indicators you are placing into your charts. Some poorly written indicators can really slow your system down. The easiest way to correct this is to shutdown metatrader. Go into your experts folder and remove both the .ex4 and the mq4 file ( or just rename them) of the indicator you think is causing the bottle neck.

But, reading this thread another thought came into my mind.
If Most indicators recalculate the values every tick. And of course the tick data is controlled by from your broker. Couldn't it be possible that a broker could feed hundreds or even thousands of upticks and downticks in milliseconds without necessary changing the quote price by that much. In affect bottle necking your trading platform on purpose? Sorry I am skeptical of brokers. The market is a Dog-Eat-Dog world.

If so, wouldnt it be better to code indicators that update on time instead of ticks. For example every 500 milliseconds or 1 second.
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