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dst
Interactive Brokers

Registered: Sep 2004
Posts: 129

04-26-13 03:35 PM

Quote from atticus:

No weekly options on browser-based, and of course still no risknav on download.

I see both weekly options (for e.g. AAPL) and risknav on 938 build, which is latest browser based; please report your issue to our customer support (e.g. via ticket in account management), thank you.

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Daal

Registered: Oct 2002
Posts: 9019

04-26-13 03:43 PM

Quote from dst:

You need space for Win7 runtime (especially 64 bit), your API client plus automated trading system, and any other apps you also might be running (browser, email client etc); note that previous poster regulus was also running Multicharts 64.

The sweet spot is 8Gb RAM (in this config you might want to turn off os pagination for better performance) with Core i7 CPU and SSD or hybrid drive.

You must be mistaken about the CPU. I have a core i3 3rd gen and it is barely used through the day. The avg usage is surely bellow 30% and it rarely spikes much

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regulus

Registered: Apr 2013
Posts: 19

04-26-13 05:14 PM

Quote from dst:

I don't have similar reports plus, you cannot have TWS consume more than 1Gb (it is configured not to go over it)

Dennis,
In order to work around the issue, I changed the 768M default setting for Java maximum heap size to 5G via the Xmx command in the shortcut target field. With this setting, javaw.exe can reach several GB but then will eventually crash. There are no any other processes related to javaw.exe, since when I close TWS, the javaw.exe process will disappear.

I can reproduce this behavior with all TWS versions > 932.4 and with both Java 32 and 64 Bit. Every time I downgraded from the then latest version to 932.4, the issue disppeared completely. With TWS <= 932.4 and more than 80 Charts of tick data in MultiCharts64, I have just around 400 MB of memory consumption after several days of continuous operation.

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