Besides this large body of work that advocates using
low-power CPUs for web-scale workloads, there is work
that conversely argues for using heavyweight cores for webscale workloads. H¨olzle [19] argues that heavyweight cores
with high single thread performance are desirable for Internet workloads compared to low-power cores with lower single thread performance. He argues that once single thread
performance of low-power cores lags by a factor of two or
more behind heavyweight cores, it becomes harder to improve cost effectiveness of low-power cores. This occurs
due to multiple factors like higher system overheads (like
cabling, enclosures) and power inefficiency of components
like disks and network. Our design aims at precisely this
problemand solves it using virtualized I/O and sharing fixed