diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/geth/monitorcmd.go | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/cmd/geth/monitorcmd.go b/cmd/geth/monitorcmd.go index 545ac3274..fe771b561 100644 --- a/cmd/geth/monitorcmd.go +++ b/cmd/geth/monitorcmd.go @@ -105,9 +105,6 @@ func monitor(ctx *cli.Context) { charts := make([]*termui.LineChart, len(monitored)) units := make([]int, len(monitored)) data := make([][]float64, len(monitored)) - for i := 0; i < len(data); i++ { - data[i] = make([]float64, 512) - } for i := 0; i < len(monitored); i++ { charts[i] = createChart((termui.TermHeight() - footer.Height) / rows) row := termui.Body.Rows[i%rows] @@ -238,7 +235,11 @@ func fetchMetric(metrics map[string]interface{}, metric string) float64 { func refreshCharts(xeth *rpc.Xeth, metrics []string, data [][]float64, units []int, charts []*termui.LineChart, ctx *cli.Context, footer *termui.Par) (realign bool) { values, err := retrieveMetrics(xeth) for i, metric := range metrics { - data[i] = append([]float64{fetchMetric(values, metric)}, data[i][:len(data[i])-1]...) + if len(data) < 512 { + data[i] = append([]float64{fetchMetric(values, metric)}, data[i]...) + } else { + data[i] = append([]float64{fetchMetric(values, metric)}, data[i][:len(data[i])-1]...) + } if updateChart(metric, data[i], &units[i], charts[i], err) { realign = true } @@ -255,12 +256,16 @@ func updateChart(metric string, data []float64, base *int, chart *termui.LineCha colors := []termui.Attribute{termui.ColorBlue, termui.ColorCyan, termui.ColorGreen, termui.ColorYellow, termui.ColorRed, termui.ColorRed} // Extract only part of the data that's actually visible - data = data[:chart.Width*2] - + if chart.Width*2 < len(data) { + data = data[:chart.Width*2] + } // Find the maximum value and scale under 1K - high := data[0] - for _, value := range data[1:] { - high = math.Max(high, value) + high := 0.0 + if len(data) > 0 { + high = data[0] + for _, value := range data[1:] { + high = math.Max(high, value) + } } unit, scale := 0, 1.0 for high >= 1000 { @@ -271,6 +276,10 @@ func updateChart(metric string, data []float64, base *int, chart *termui.LineCha realign, *base, *chart = true, unit, *createChart(chart.Height) } // Update the chart's data points with the scaled values + if cap(chart.Data) < len(data) { + chart.Data = make([]float64, len(data)) + } + chart.Data = chart.Data[:len(data)] for i, value := range data { chart.Data[i] = value / scale } @@ -296,7 +305,6 @@ func createChart(height int) *termui.LineChart { if runtime.GOOS == "windows" { chart.Mode = "dot" } - chart.Data = make([]float64, 512) chart.DataLabels = []string{""} chart.Height = height chart.AxesColor = termui.ColorWhite |