When average is not average
Qingyang Wang, Yasuhiko Kanemasa, Motoyuki Kawaba, Calton Pu · 2012
Simultaneously achieving good performance and high resource utilization is an important goal for production cloud environments. Through extensive measurements of an n-tier application benchmark (RUBBoS), we show that system response time frequently presents large scale fluctuations (e.g., ranging from tens of milliseconds up to tens of seconds) during periods of high resource utilization.