2323
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Ran 30 Dec 2018 11:00PM UTC

Jobs 1

Files 67

Run time 4s

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Build # 2323

Build Type

push

travis-ci

Committed by

ben-manes

Commit Message

Use the hit density to determine the direction to adapt by

The advanced gradient descent algorithms work well in the long traces
with large caches. For small caches they were biased towards recency
due to being unable to grok the workload due to the short step sizes.
However the step size cannot be increased for short traces as it slows
the adaption rate too much. In particular a loopy trace confused Adam
due to some samples having 0% or 100% hit rates.

Instead of letting Adam choose the direction, we use the hit density.
We give more to the region whose hit rate increases more per resources
given, e.g. region-size / region-hit-rate. This corrects Adam and lets
it accelerate to the optimal configuration!

Coverage Stats

5769 of 6148 relevant lines covered (93.84%)

0.94 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
2	2323.2 (GROUP=tests)	30 Dec 2018 11:00PM UTC	0	93.84	Travis Job 2323.2

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