Pebble Benchmarks

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Benchmarks are run nightly using pebble bench ycsb on AWS c5d.4xlarge machines equipped with local SSD storage. The AWS instances show remarkably high instance to instance performance variability. In order to smooth out that variability the benchmarks are run multiple times each (using difference instances) and outliers are excluded.

L0-sublevels and flush-splits enabled

Increased LogWriter free blocks 4->16

Began tracking ycsb/E read-amp

Level metadata switched to use a B-Tree

Enabled read-triggered compactions

YCSB A (50% reads, 50% updates, zipf key distribution)

Detail: Bytes Read | Bytes Written | Read Amp | Write Amp

YCSB B (95 reads, 5% updates, zipf key distribution)

YCSB C (100% reads, zipf key distribution)

YCSB D (95% reads, 5% updates, uniform key distribution)

YCSB E (95% scans, 5% updates, zipf key distribution)