Sounds like QCharts is a memory hog.
I was considering upgrading from my current 128M, but Task Manager shows that I consistently run with 50-60 MB of physical memory free.
RealTick III is not much of a memory hog at all. It's using 16MB, plus another 5MB for permcache. My own RT3 addon software that scans all of L2 adds another 5MB when empty and balloons to about 23MB when fully loaded-up with all of NASDAQ L2 (about 5000 stocks). I mean, literally, this thing is receiving ALL L2 tiers on EVERY NASDAQ stock - a LOT of data - so, geez, I can't imagine any kind of charting or scanning software using any more memory that that.
(It also points out how bad the Townsend display code is - I have NO problem keeping up with L2 on 5000 stocks - while RT3 sometimes locks-up on two L2 displays! The problem is apparently in the display code, not in the downloading code or with their server, since my app uses the RT3 API and is presumably sharing the same downloading code that RT3 uses... I do take special care to avoid overloading their server, "pacing" my requests in blocks of 500 stocks when doing the initial download - something that RT3 doesn't do but should. Actually, they don't allow more than 500 stocks in a board view in the first place, but there are other places where they could benefit from using a "pacing" technique - such as when downloading charts.)
With all this stuff loaded up, I show 32MB of physical memory available, although at the same time I show total memory usage of 150MB - I suppose a lot of stuff that's paged-out and not needed during normal operation.
Actually, the worst hog I have has nothing to do with market stuff - it's my X-Windows emulator that I use to access a Unix (Solaris) system sitting next to my NT box. (Frontier SuperX, FWIW.)
Obviously, though, your memory requirements will depend on the software that you use, and if Qcharts needs 100+MB, then I'd definately put in an extra 128M. |
