Messages in this thread | | | Subject | RE: [patch 10/10] Scheduler profiling - Use immediate values | Date | Fri, 6 Jul 2007 10:50:30 -0700 | From | "Li, Tong N" <> |
| |
> Also cache misses in this situation tend to be much more than 48 cycles > (even an K8 with integrated memory controller with fastest DIMMs is > slower than that) Mathieu probably measured an L2 miss, not a load from > RAM. > Load from RAM can be hundreds of ns in the worst case. >
The 48 cycles sounds to me like a memory load in an unloaded system, but it is quite low. I wonder how it was measured...
tong - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |