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It's not an issue with the charts, it's an issue with the data.

Yes, I have exactly the same problem with K200. There is no historical data for Monday and Tuesday. I havn't checked for today. HSI, SGXNK, SPI are all OK.

Why not consider Jython rather than Beanshell and get access to a lot of Python open source stuff ? Runs on the JVM, access to Java classes etc.

One further comment - There are actually two garbage collectors. It seems that the one that releases memory back to the OS (ie calls free () or sbrk ()) is called MarkSweepCompact. It defragments the heap. It is 'expensive' to run, so is rarely called. But if the memory requirements of the...

That's a hard question to answer. Without being familiar with the TWS code I couln't even take a reasonable guess. I know from being a developer and also working in third level tech support in the past, that one's first reaction is "Nah !! Couldn't be" but on investigation whatever the issue is...

Stock777 I noticed your comment about having to kill TWS. I am running on Linux, so milage may be different, but I have had to kill TWS on a couple of occasions when I have had lots of things running and the machine is low on memory and is swapping heavily. There are messages about...

Stock777, While I don't know the exact circumstances of the problems you are having, you need to understand a little of whats happening here. When the Java application is finished with something like the memory used for backfill, it releases it back to the java heap and not necessarily...

For anybody that wants to get a better understanding of memory utilization with TWS (or any Java application) and is prepared to spend a (very) little effort, I recommend that you download the jdk (java software development kit) from Sun. A tool called jconsole is included with the 1.5 jdk...

Matrox have released updated Linux drivers for G series with support for Xorg 7.0 (but it seems not for 7.1) and 64 bit support. About time too.

For use in trading I think you are better off with Nvidia NVS 200, 280 or 285. Low power (21W) and no fan. Image quality is very good.

How about this one - http://compsoc.dur.ac.uk/whitespace/index.php

Unless things have changed recently, TWS allows only one concurrent backfill request ie make the request and wait for the data before making another. The charting software should sort this out without user intervention.

Have you tried it ? I'm not familiar with Amibroker, but TWS will have no problem with keeping the charting application fed with timely data. Your requirements seem fairly modest. You can reduce the CPU consumption of TWS by minimizing it, or reducing the number of symbols on the visible page...

I doubt it. There is only one word for Matrox Linux support - terrible. If you want multi head cards you are MUCH better off going for NVidia NVS 280/285 or 400/440. The drivers may not be open source, but Nvidia is actively developing and supporting them. And most importantly, they work. ATI...

Not to mention potential stability and heat issues. Really bad idea for a trading machine.

As an example, the price differene between a dual core AMD 4200+ x2 and a single core 3500+ is about $100. Clock speed is the same in the two chips. The situation is similiar with Intel. It doesn't make sense to not get dual core in a new machine. At this price, why not ? I'm quite aware that...

"Evidence of the broad nature of Hezbollah’s resistance to Israeli occupation can be seen in the identity of its suicide attackers. Hezbollah conducted a broad campaign of suicide bombings against American, French and Israeli targets from 1982 to 1986. Altogether, these attacks — which...

All *nix systems that do a significant amount of graphics will instantly benefit from dual core eg Linux desktops. A cursory glance at top will show the X11 server consumes a significant amount of CPU time. The X protocol is asynchronous. Hence any graphics application can go about it's thing...

E6600 looks like the best value for money of the range. However these new CPUs are not compatible with just about all current motherboards, so a drop in upgrade is not possible. You will need new memory as well as motherboard, if current machine uses DDR. I have to agree though, that these...

Core 2 Duo needs a motherboard with Intel 965 or 975x chipset. Most current motherboards won't work. Before looking for a hardware solution, you should try to identify where the problem lies. eg malware, some other process(es) consuming CPU cycles etc.