I want to understand SSD performance so I can design fast data structures, such as fractal trees. This talk will present some performance measurements of an Intel X25E which were motivated by the following observations:
I tried to measure what the right block size is for operating an SSD.
A good block size is one that hits the “half power point”. That is,
half the performance is accounted for by “seek time”, and half by
“bandwidth”. This experiment postulates a simple model for SSD and
rotating disks where for random reads of a block, there is a startup
time S and a bandwidth B. The half-power points look like this:
SSD / Rotating Disk
reads: 50KB / 0.5MB-1MB
writes: 10KB / 0.5MB-1MB
read/write: mix 21KB / 0.5MB-1MB
I found SSD performance to be a little bit strange and unpredictable.
Dr. Kuszmaul’s research focuses on developing computer systems and hardware that behave well both in practice and in theory. His entry won 5 out of 6 categories in Jim Gray’s 2007 sorting benchmark contest, sorting a terabyte in 197 seconds. He formerly architected Akamai’s distributed data collection system, was a Yale Professor of Computer Science and was a principal network architect for the Thinking Machines Connection Machine CM-5 Supercomputer. He was one of the developers of the MIT Cilk multithreaded programming system and wrote, in Cilk++, winning entries for 4 out of 12 of problems in the 2009 Intel Threading Challenge. Dr. Kuszmaul a founder and Chief Architect at Tokutek and is a Research Scientist in the Massachusetts Institute of Technology Computer Science and Artificial Intelligence Laboratory (MIT CSAIL).
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