trouble with metatrader

gordon 2010.03.25 03:25 #1

jeorme:
Hi,

I the past weeks I have some trouble with metatrader. Actually I use a live account on fxcm and metatrader decmo account. But when they run at the same time . But when I start running backtest on a strategy my laptop becomes really slow and after after minutes I have to reeboor since it is bliocks (mouse and keyboard do not work anymore and the screen is fixed). Does anyone had this kind of trouble. It is due to the download of History or backtest which take too much memory. I thank u in advance.

Regards,
Jerome

You should monitor system resources while running a backtest (with Task Manager, etc.) to rule out memory problems.

[Deleted] 2010.03.25 04:03 #2

jeorme your symptoms of hardware lock-up actually sounds like a heat-induced issue. I had a dell laptop a couple years ago that would do the same thing when running backtests, it wasn't a ram issue for me, just the cpu cooling for my laptop wasn't designed for the cpu to actually run that long at continuous 100% cpu utilization. The whole thing would get so hot it was actually uncomfortable to type on the keyboard because the keys were so hot on my fingers.

At any rate just a few ideas to try out here, start with gordon's suggestion because that will quickly rule-in/rule-out some obvious suspects like ram usage. Also if you are comfortable with doing so I recommend opening up task manager and setting the priority for your terminal.exe process to either BelowNormal or Low. This will help reduce the lack of responsiveness IF the problem is not hardware/heat related as I mentioned above.

Third thing to try is some more "active" cooling, while doing backtests keep your laptop LCD flipped open (it just traps heat when you close the LCD) and physically set the laptop on top of something that supports the laptop on just two sides (like two books, one on each side of the laptop, with as much space as practical between them to maximize exposure of the bottom opf the laptop to air) and then setup a small office fan to blow air through this little wind tunnel you've now created under the laptop.

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gordon 2010.03.25 04:21 #3

Adding to phillip's suggestion - u should monitor your laptop's temperature while backtesting. For example, you can use HWMonitor by CPUID -> http://www.cpuid.com/hwmonitor.php (freeware).

schnappi 2010.03.25 07:48 #4

Also there's still a bug in MT4 creating memory leaks. Search in my created threads

[Deleted] 2010.03.25 09:52 #5

schnappi wrote >>
Also there's still a bug in MT4 creating memory leaks. Search in my created threads

thank you for your advice. I am not a specialist, but how do you resolve/avoid memory leak. I have to clean something and if i have to clean something how can I do that.
Thank you again for your answer, I hope it will get better.

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[Deleted] 2010.03.25 12:10 #6

jeorme:

thank you for your advice. I am not a specialist, but how do you resolve/avoid memory leak. I have to clean something and if i have to clean something how can I do that.
Thank you again for your answer, I hope it will get better.

Another things that I do not understand, is that my laptop is not hot . So I really think it is due to memory leak. I changed the level to low using Task manager, but it is always the same trouble. Actually, I think I cannot run those two platforms together. Have you ever tried to open a metatrader platform and another platform (for instance fxcm platform)

Thanks

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gordon 2010.03.25 12:43 #7

jeorme:

Another things that I do not understand, is that my laptop is not hot . So I really think it is due to memory leak. I changed the level to low using Task manager, but it is always the same trouble. Actually, I think I cannot run those two platforms together. Have you ever tried to open a metatrader platform and another platform (for instance fxcm platform)

Thanks

On my trading server I have up to about 10 Terminals running at the same time and the server only has 512mb memory (and it's running win2k3 which is not exactly a light-weight OS) with no problems whatsoever.

Regarding a possible memory leak, there's some info on how to diagnose and 'solve' here -> https://www.mql5.com/en/forum/118313.

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[Deleted] 2010.03.27 16:14 #8

gordon:

On my trading server I have up to about 10 Terminals running at the same time and the server only has 512mb memory (and it's running win2k3 which is not exactly a light-weight OS) with no problems whatsoever.

Regarding a possible memory leak, there's some info on how to diagnose and 'solve' here -> https://www.mql5.com/en/forum/118313.

Hi Gordon,

Wonder if you experienced this. I just got a new Core i7 Intel running windows 7 and it is running a back test 4X slower than it did on my Core i3 machine (same MT4 version, same History, same EA). The only difference is that the clock speed of the i3 is actually 2.13GHz and the new i7 is a 1.6GHz. but I can't believe it would account for 4X slower performance.

Any idea?

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gordon 2010.03.28 01:10 #9

tdupard:
Wonder if you experienced this. I just got a new Core i7 Intel running windows 7 and it is running a back test 4X slower than it did on my Core i3 machine (same MT4 version, same History, same EA). The only difference is that the clock speed of the i3 is actually 2.13GHz and the new i7 is a 1.6GHz. but I can't believe it would account for 4X slower performance.

Any idea?

I have only used MT4 on WinXP or Win2k3 with older CPU's... Had no problems. No idea about yours...