I have two words for that page "holy sh*t" that is the most excellent performance visualization stuff I've seen in a long time[1]. Nice that it is a GSoC project this year, can't wait to see the final output.
[1] Seriously, the last time I saw something that good and detailed was an investigation into cache line miss performance back in 2002 on the Intel P4 at NetApp. That investigation figured out that the transaction rate in Intel's memory controller resulted in an 18+% reduction in throughput and up to 50% increase in latency for file system operations.
[1] Seriously, the last time I saw something that good and detailed was an investigation into cache line miss performance back in 2002 on the Intel P4 at NetApp. That investigation figured out that the transaction rate in Intel's memory controller resulted in an 18+% reduction in throughput and up to 50% increase in latency for file system operations.