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https://github.com/siderolabs/talos.git
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252799a00b
Many small changes, memory reduction measured to be aroun -20MiB. Reduce cgroup memory limit. Changes: * limit updates to 2fps * batch log updates * reuse/maps slices to reduce allocations Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com> (cherry picked from commit bdcc9321b637da77f1007a571193c2e03c984b8b)
93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package components
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import (
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"slices"
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"github.com/gdamore/tcell/v2"
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"github.com/navidys/tvxwidgets"
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"github.com/rivo/tview"
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"github.com/siderolabs/talos/internal/pkg/dashboard/apidata"
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)
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// BaseGraph represents the widget with some usage graph.
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type BaseGraph struct {
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tview.Primitive
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plot *tvxwidgets.Plot
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labels []string
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plotData [][]float64 // pre-allocated; outer slice reused every update
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}
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// NewBaseGraph initializes BaseGraph.
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func NewBaseGraph(title string, labels []string) *BaseGraph {
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widget := &BaseGraph{
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plot: tvxwidgets.NewPlot(),
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labels: labels,
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plotData: make([][]float64, len(labels)),
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}
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root := tview.NewFrame(widget.plot).
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SetBorders(0, 0, 0, 0, 0, 0).
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AddText(title, true, tview.AlignCenter, tcell.ColorDefault)
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widget.plot.SetBorder(false)
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widget.plot.SetLineColor([]tcell.Color{
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tcell.ColorRed,
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tcell.ColorGreen,
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})
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widget.plot.SetTitle(title)
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widget.plot.SetDrawAxes(false)
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widget.plot.SetMarker(tvxwidgets.PlotMarkerBraille)
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widget.Primitive = root
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return widget
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}
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// OnAPIDataChange implements the APIDataListener interface.
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func (widget *BaseGraph) OnAPIDataChange(node string, data *apidata.Data) {
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nodeData := data.Nodes[node]
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if nodeData == nil {
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for i := range widget.labels {
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widget.plotData[i] = []float64{0}
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}
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widget.plot.SetData(widget.plotData)
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return
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}
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_, _, width, _ := widget.plot.GetPlotRect() //nolint:dogsled
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for i, name := range widget.labels {
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series := nodeData.Series[name]
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maxPoints := min(width, len(series))
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widget.plotData[i] = slices.Clone(series[len(series)-maxPoints:])
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}
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widget.plot.SetData(widget.plotData)
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}
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// NewCPUGraph creates CPU usage graph.
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func NewCPUGraph() *BaseGraph {
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return NewBaseGraph("[::b]CPU USER/SYSTEM", []string{"user", "system"})
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}
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// NewMemGraph creates mem usage graph.
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func NewMemGraph() *BaseGraph {
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return NewBaseGraph("[::b]MEM USED", []string{"mem"})
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}
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// NewLoadAvgGraph creates loadavg graph.
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func NewLoadAvgGraph() *BaseGraph {
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return NewBaseGraph("[::b]LOAD AVG 60sec", []string{"loadavg"})
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}
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