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* Update v2.021 - Updated Lax mode cookies - Updated diskmg implementation for new Linux utilities - Fixed CPU usage over 100% bug - CSS optimization for login page * Create LICENSE.txt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package usageinfo | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io/ioutil" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| type CPUStats struct { | ||
| user uint64 | ||
| nice uint64 | ||
| system uint64 | ||
| idle uint64 | ||
| iowait uint64 | ||
| irq uint64 | ||
| softirq uint64 | ||
| } | ||
|
|
||
| // getCPUStats reads and parses the CPU stats from /proc/stat | ||
| func getCPUStats() (CPUStats, error) { | ||
| data, err := ioutil.ReadFile("/proc/stat") | ||
| if err != nil { | ||
| return CPUStats{}, err | ||
| } | ||
|
|
||
| lines := strings.Split(string(data), "\n") | ||
| for _, line := range lines { | ||
| if strings.HasPrefix(line, "cpu ") { | ||
| fields := strings.Fields(line) | ||
| if len(fields) < 8 { | ||
| return CPUStats{}, fmt.Errorf("unexpected format in /proc/stat") | ||
| } | ||
|
|
||
| // Parse the CPU fields into the CPUStats struct | ||
| user, _ := strconv.ParseUint(fields[1], 10, 64) | ||
| nice, _ := strconv.ParseUint(fields[2], 10, 64) | ||
| system, _ := strconv.ParseUint(fields[3], 10, 64) | ||
| idle, _ := strconv.ParseUint(fields[4], 10, 64) | ||
| iowait, _ := strconv.ParseUint(fields[5], 10, 64) | ||
| irq, _ := strconv.ParseUint(fields[6], 10, 64) | ||
| softirq, _ := strconv.ParseUint(fields[7], 10, 64) | ||
|
|
||
| return CPUStats{ | ||
| user: user, | ||
| nice: nice, | ||
| system: system, | ||
| idle: idle, | ||
| iowait: iowait, | ||
| irq: irq, | ||
| softirq: softirq, | ||
| }, nil | ||
| } | ||
| } | ||
|
|
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| return CPUStats{}, fmt.Errorf("could not find CPU stats") | ||
| } | ||
|
|
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| // calculateCPUUsage calculates the percentage of CPU usage | ||
| func calculateCPUUsage(prev, current CPUStats) float64 { | ||
| prevTotal := prev.user + prev.nice + prev.system + prev.idle + prev.iowait + prev.irq + prev.softirq | ||
| currentTotal := current.user + current.nice + current.system + current.idle + current.iowait + current.irq + current.softirq | ||
|
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||
| totalDiff := currentTotal - prevTotal | ||
| idleDiff := current.idle - prev.idle | ||
|
|
||
| if totalDiff == 0 { | ||
| return 0.0 | ||
| } | ||
|
|
||
| usage := (float64(totalDiff-idleDiff) / float64(totalDiff)) * 100.0 | ||
| return usage | ||
| } | ||
|
|
||
| // GetCPUUsage returns the current CPU usage as a percentage | ||
| // Note this is blocking and will sleep for 1 second | ||
| func GetCPUUsageUsingProcStat() (float64, error) { | ||
| // Get initial CPU stats | ||
| prevStats, err := getCPUStats() | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| // Sleep for 1 second to compare stats over time | ||
| time.Sleep(1 * time.Second) | ||
|
|
||
| // Get current CPU stats after 1 second | ||
| currentStats, err := getCPUStats() | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| // Calculate and print the CPU usage | ||
| cpuUsage := calculateCPUUsage(prevStats, currentStats) | ||
| return cpuUsage, nil | ||
| } |
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