The test failed on branch=release-20.2, 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 556.60 at time 2020-09-09 06:17:30 +0000 UTC is below minimum allowable QPS of 900.00; entire timeseries: [{TimestampNanos:1599632240000000000 Value:22.200000000000003} {TimestampNanos:1599632250000000000 Value:556.6} {TimestampNanos:1599632260000000000 Value:1000.2} {TimestampNanos:1599632270000000000 Value:1000.3000000000001} {TimestampNanos:1599632280000000000 Value:1000.4000000000001} {TimestampNanos:1599632290000000000 Value:998.6} {TimestampNanos:1599632300000000000 Value:1000.5} {TimestampNanos:1599632310000000000 Value:998.4000000000001} {TimestampNanos:1599632320000000000 Value:996} {TimestampNanos:1599632330000000000 Value:997} {TimestampNanos:1599632340000000000 Value:996.3000000000001} {TimestampNanos:1599632350000000000 Value:994.8000000000001} {TimestampNanos:1599632360000000000 Value:996.9000000000001} {TimestampNanos:1599632370000000000 Value:996.5} {TimestampNanos:1599632380000000000 Value:998.2} {TimestampNanos:1599632390000000000 Value:999} {TimestampNanos:1599632400000000000 Value:999.3000000000001} {TimestampNanos:1599632410000000000 Value:999.5} {TimestampNanos:1599632420000000000 Value:999.5} {TimestampNanos:1599632430000000000 Value:999.8000000000001} {TimestampNanos:1599632440000000000 Value:997.8} {TimestampNanos:1599632450000000000 Value:997.6000000000001} {TimestampNanos:1599632460000000000 Value:997.4000000000001} {TimestampNanos:1599632470000000000 Value:997.1000000000001} {TimestampNanos:1599632480000000000 Value:996.4000000000001} {TimestampNanos:1599632490000000000 Value:997.9000000000001} {TimestampNanos:1599632500000000000 Value:997.9000000000001}]