High COSt for Distributed TX Many scalable systems have low performance a Usually 10s-100s of thousands of TX/second n High COST(config. that outperform single thread o e.g., HStore, Calvin SIGMOD'12 Emerging speedy tx systems not scale-out o Achieve over 100s of thousands TX/second o e.g., Silo SosP'13, DBXEurOSys'14 Dilemma single-node perf. vs. scale-ouf i Salability But at what Cost HotoS 20153 High COST for Distributed TX Many scalable systems have low performance □ Usually 10s~100s of thousands of TX/second □ High COST1 (config. that outperform single thread) □ e.g., HStore, CalvinSIGMOD’12 1 Salability! But at what Cost? HotOS 2015 Dilemma: single-node perf. vs. scale-out Emerging speedy TX systems not scale-out □ Achieve over 100s of thousands TX/second □ e.g., SiloSOSP’13, DBXEuroSys’14