Bad performance when using Innerspace?

[Chivalrous]

yeah same thing for me, i guess thats what they mean by mileage may vary

[Lax]

Hey all, i brainstormed all day at work and came up with a list of a few things to try. When i got home i did a new window layout and set it up the same as the last, but changed round robin cpu balancing to select all CPU's with every window and it completely fixed my fps issue. Now my foreground is always at 60 and my slaves are always at 30, when before it was more like 15 and 5 or 10 and 5 >.< no idea why that did it, maybe the new 8 core processors aren't balanced properly for round robin, or my overclocking the processor is throwing it off? anyway, thanks for the help everybody problem is solved.

I can explain.

You've got a true 8-core CPU (as opposed to an i7 with 4 physical + 4 logical cores), and 5 WoW instances. With Round-robin balancing, this is going to use 1 core per instance on your non-HyperThreaded CPU, meaning you were utilizing 5 of your 8 cores, just over half of the capacity of your CPU. If you Enable HyperThreading in the CPU Strategy wizard (this is by default OFF for your CPU, as it is not a HyperThreaded Intel CPU), it will use 2 cores per instance, using all of your cores.

The basic principle behind using Round-robin balancing over All instances-all cores is to reduce context switches and contention between the applications, assuming your CPU is fully assigned. This is therefore more important when you have more game instances than cores to go around (more typically 5+ game instances over 4 cores as with an i7), whereas in this case you had plenty of extra CPU capacity that was specifically left unused by the default Round-robin options.

So that's the main reason why your new CPU Strategy is such a huge difference over the default. This does give me some ideas for improvements to the CPU Strategy generator, as the default really should better utilize your CPU.

[Chivalrous]

Thanks Lax! I'm a huge fan. ISboxer is great and your support is always appreciated. I played all night with the new balancing it is working perfect.

[Lyonheart]

Sheet! So i prob had HT off? i was wondering why i took such a hit on this PC ( i7K btw )doing round robin.. will have to give that a shot..thx Lax!

[Lax]

Sheet! So i prob had HT off? i was wondering why i took such a hit on this PC ( i7K btw )doing round robin.. will have to give that a shot..thx Lax!

Nah, for your i7 ISBoxer auto-detects and enables the HyperThreading option. You probably didn't manually turn it off. My explanation was specifically for OP's 8-core AMD CPU.