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roachtest/tpcc: reduce load during rebalance period #59206

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Jan 21, 2021
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roachtest/tpcc: reduce load during rebalance period #59206

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16 changes: 11 additions & 5 deletions pkg/cmd/roachtest/tpcc.go
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Original file line number Diff line number Diff line change
Expand Up @@ -677,12 +677,18 @@ func loadTPCCBench(
return err
}

// Split and scatter the tables. Ramp up to the expected load in the desired
// distribution. This should allow for load-based rebalancing to help
// distribute load. Optionally pass some load configuration-specific flags.
// Split and scatter the tables. Ramp up to the half of the expected load in
// the desired distribution. This should allow for load-based rebalancing to
// help distribute load. Optionally pass some load configuration-specific
// flags.
const txnsPerWarehousePerSecond = 12.8 * (23.0 / 10.0) * (1.0 / 60.0) // max_tpmC/warehouse * all_txns/new_order_txns * minutes/seconds
rateAtExpected := txnsPerWarehousePerSecond * float64(b.EstimatedMax)
maxRate := int(rateAtExpected / 2)
rampTime := (1 * rebalanceWait) / 4
loadTime := (3 * rebalanceWait) / 4
cmd = fmt.Sprintf("./cockroach workload run tpcc --warehouses=%d --workers=%d --max-rate=%d "+
"--wait=false --duration=%s --scatter --tolerate-errors {pgurl%s}",
b.LoadWarehouses, b.LoadWarehouses, b.LoadWarehouses/2, rebalanceWait, roachNodes)
"--wait=false --ramp=%s --duration=%s --scatter --tolerate-errors {pgurl%s}",
b.LoadWarehouses, b.LoadWarehouses, maxRate, rampTime, loadTime, roachNodes)
if out, err := c.RunWithBuffer(ctx, c.l, loadNode, cmd); err != nil {
return errors.Wrapf(err, "failed with output %q", string(out))
}
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