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Presentation: "How not to measure latency"
Time:
Wednesday 13:30 - 14:20
Location:
Regency
Abstract:
Understanding
application responsiveness and latency is critical to delivering good
application behavior. But good characterization of bad data is useless. When
measurements of response time present false or misleading latency information,
even the best analysis can lead to wrong operational decisions and poor application
experience.
In this
talk, Gil Tene (CTO, Azul Systems) will discuss some common pitfalls
encountered in measuring and characterizing latency. Gil will demonstrate and
discuss some false assumptions and measurement techniques that lead to
incorrect results, and cover simple ways to sanity check and correct these
situations. He will discuss the fallacy of using standard deviation
measurements, the strongly multi-modal nature of latency, common
discontinuities found in most computing platforms, and how back pressure and
coordinated data omission issues can skew measurement results dramatically.
Gill will introduce and demonstrate how simple and recently open sourced
tooling can be used to improve and gain higher confidence in both latency
measurement and reporting.
Download slides
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Gil Tene, CTO and Co-founder, Azul Systems
Gil Tene is CTO and co-founder of Azul Systems. He has been involved
with virtual machine technologies for the past 20 years and has been
building Java technology-based products since 1995. Gil pioneered Azul's
Continuously Concurrent Compacting Collector (C4), Java Virtualization,
Elastic Memory, and various managed runtime and systems stack
technologies that combine to deliver the industry's most scalable and
robust Java platforms.
In 2006 he was named one of the Top 50 Agenda Setters in the technology
industry by Silicon.com. Prior to co-founding Azul, Gil held key
technology positions at Nortel Networks, Shasta Networks and at Check
Point Software Technologies, where he delivered several industry-leading
traffic management solutions including the industry's first Firewall-1
based security appliance. He architected operating systems for Stratus
Computer, clustering solutions at Qualix/Legato, and served as an
officer in the Israeli Navy Computer R and D unit. Gil holds a BSEE from
The Technion Israel Institute of Technology, and has been awarded 27
patents in computer-related technologies.
Twitter: @giltene
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