Hardware Reference
In-Depth Information
FIGURE 32.6: IOAnalyzer captures I/O traces and statistics and compares
this with previous traces in order to find which is the most beneficial scheduler
for the near future.
32.5 Conclusion
As the number of cores increases in modern multicore servers, several is-
sues arise for the I/O path. In this chapter, three such issues were briefly
examined: NUMA effects, I/O cache eciency, and I/O scheduler selection.
Early investigation shows that these three areas will require a significantly
better understanding of the problems ahead and new mechanisms in the I/O
path to ensure the scalability of I/O performance.
Bibliography
[1] Shoaib Akram, Manolis Marazakis, and Angelos Bilas. Understanding
Scalability and Performance Requirements of I/O Intensive Applications
on Future Multicore Servers. In MASCOTS, pages 171{180, 2012.
[2] Andrea Arcangeli, Izik Eidus, and Chris Wright. Increasing Memory
Sensity by Using KSM. In OLS '09: Proceedings of the Linux Symposium,
pages 19{28, July 2009.
