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feat(lotus-sim): measure daily power growth

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This commit is contained in:
Steven Allen 2021-06-12 09:57:27 -07:00
parent 52261fb814
commit f6043a0250
1 changed files with 20 additions and 13 deletions
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33
cmd/lotus-sim/info.go
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@ -38,20 +38,34 @@ func getTotalPower(ctx context.Context, sm *stmgr.StateManager, ts *types.TipSet
}
func printInfo(ctx context.Context, sim *simulation.Simulation, out io.Writer) error {
powerNow, err := getTotalPower(ctx, sim.StateManager, sim.GetHead())
head := sim.GetHead()
start := sim.GetStart()
powerNow, err := getTotalPower(ctx, sim.StateManager, head)
if err != nil {
return err
}
powerStart, err := getTotalPower(ctx, sim.StateManager, sim.GetStart())
powerLookbackEpoch := head.Height() - builtin.EpochsInDay
if powerLookbackEpoch < start.Height() {
powerLookbackEpoch = start.Height()
}
lookbackTs, err := sim.Chainstore.GetTipsetByHeight(ctx, powerLookbackEpoch, head, false)
if err != nil {
return err
}
powerGrowth := big.Sub(powerNow.RawBytePower, powerStart.RawBytePower)
powerLookback, err := getTotalPower(ctx, sim.StateManager, lookbackTs)
if err != nil {
return err
}
// growth rate in size/day
growthRate := big.Div(
big.Mul(big.Sub(powerNow.RawBytePower, powerLookback.RawBytePower),
big.NewInt(builtin.EpochsInDay)),
big.NewInt(int64(head.Height()-lookbackTs.Height())),
)
tw := tabwriter.NewWriter(out, 8, 8, 1, ' ', 0)
head := sim.GetHead()
start := sim.GetStart()
headEpoch := head.Height()
firstEpoch := start.Height() + 1
@ -59,12 +73,6 @@ func printInfo(ctx context.Context, sim *simulation.Simulation, out io.Writer) e
startTime := time.Unix(int64(start.MinTimestamp()), 0)
duration := headTime.Sub(startTime)
// growth rate in size/day
growthRate := big.Div(
big.Mul(powerGrowth, big.NewInt(int64(24*time.Hour))),
big.NewInt(int64(duration)),
)
fmt.Fprintf(tw, "Name:\t%s\n", sim.Name())
fmt.Fprintf(tw, "Head:\t%s\n", head)
fmt.Fprintf(tw, "Start Epoch:\t%d\n", firstEpoch)
@ -74,8 +82,7 @@ func printInfo(ctx context.Context, sim *simulation.Simulation, out io.Writer) e
fmt.Fprintf(tw, "End Date:\t%s\n", headTime)
fmt.Fprintf(tw, "Duration:\t%.2f day(s)\n", duration.Hours()/24)
fmt.Fprintf(tw, "Power:\t%s\n", types.SizeStr(powerNow.RawBytePower))
fmt.Fprintf(tw, "Power Growth:\t%s\n", types.SizeStr(powerGrowth))
fmt.Fprintf(tw, "Power Growth Rate:\t%s/day\n", types.SizeStr(growthRate))
fmt.Fprintf(tw, "Daily Power Growth:\t%s/day\n", types.SizeStr(growthRate))
fmt.Fprintf(tw, "Network Version:\t%d\n", sim.GetNetworkVersion())
return tw.Flush()
}