I've been told that deleting the logfiles in ibjts and jts subdirectories can improve performance.Is this correct?They are text files apparently log.tue log.wed etc.Is this a good idea,safe and how exactly do you do it if it is?
I think it's probably a poor idea. They are there for a reason. Amongst other things, to help diagnose a problem should one occur. Have a look at the size of the log files. If no more than a few MByte, best to leave them alone.
I think you need to get that extra memory jonnyy ... everything in trading seems memory hungry and 512k seems a good minimum for performance thats not constrained by memory. 1M if you want to be free and clear.