The test failed on branch=release-19.2, cloud=gce:
test artifacts and logs in: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/artifacts/kv/gracefuldraining/nodes=3/run_1
	kv.go:453,test_runner.go:754: QPS of 178.80 at time 2020-09-02 05:53:30 +0000 UTC is below minimum allowable QPS of 900.00; entire timeseries: [{TimestampNanos:1599026000000000000 Value:1} {TimestampNanos:1599026010000000000 Value:178.8} {TimestampNanos:1599026020000000000 Value:992.5} {TimestampNanos:1599026030000000000 Value:1000.3} {TimestampNanos:1599026040000000000 Value:998.4000000000001} {TimestampNanos:1599026050000000000 Value:1000.2} {TimestampNanos:1599026060000000000 Value:1000.1} {TimestampNanos:1599026070000000000 Value:999.5} {TimestampNanos:1599026080000000000 Value:997.5} {TimestampNanos:1599026090000000000 Value:996.4000000000001} {TimestampNanos:1599026100000000000 Value:997.6} {TimestampNanos:1599026110000000000 Value:960.3000000000001} {TimestampNanos:1599026120000000000 Value:964.3000000000001} {TimestampNanos:1599026130000000000 Value:994.4000000000001} {TimestampNanos:1599026140000000000 Value:993.8000000000001} {TimestampNanos:1599026150000000000 Value:1000.4000000000001} {TimestampNanos:1599026160000000000 Value:998.7} {TimestampNanos:1599026170000000000 Value:998} {TimestampNanos:1599026180000000000 Value:998} {TimestampNanos:1599026190000000000 Value:996.4000000000001} {TimestampNanos:1599026200000000000 Value:999.3000000000001} {TimestampNanos:1599026210000000000 Value:997.7} {TimestampNanos:1599026220000000000 Value:996.9000000000001} {TimestampNanos:1599026230000000000 Value:999.1} {TimestampNanos:1599026240000000000 Value:999.7} {TimestampNanos:1599026250000000000 Value:995} {TimestampNanos:1599026260000000000 Value:993.9000000000001}]