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collector: replace fmt.Sprintf with strconv.Itoa in perfCollector (#2174) 

Signed-off-by: Matt Layher <mdlayher@gmail.com>
pull/2177/head
Matt Layher 3 years ago committed by GitHub
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4bc1c02000
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1 changed files with 33 additions and 32 deletions
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  1. 65
      collector/perf_linux.go

65
collector/perf_linux.go
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@ -160,7 +160,6 @@ func (c *perfTracepointCollector) update(ch chan<- prometheus.Metric) error {
// updateCPU is used to update metrics per CPU profiler.
func (c *perfTracepointCollector) updateCPU(cpu int, ch chan<- prometheus.Metric) error {
cpuStr := fmt.Sprintf("%d", cpu)
profiler := c.profilers[cpu]
p, err := profiler.Profile()
if err != nil {
@ -168,6 +167,8 @@ func (c *perfTracepointCollector) updateCPU(cpu int, ch chan<- prometheus.Metric
return err
}
cpuid := strconv.Itoa(cpu)
for i, value := range p.Values {
// Get the Desc from the ordered group value.
descKey := c.collectionOrder[i]
@ -176,7 +177,7 @@ func (c *perfTracepointCollector) updateCPU(cpu int, ch chan<- prometheus.Metric
c.descs[descKeySlice[0]][descKeySlice[1]],
prometheus.CounterValue,
float64(value),
cpuStr,
cpuid,
)
}
return nil
@ -584,8 +585,6 @@ func (c *perfCollector) Update(ch chan<- prometheus.Metric) error {
func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
for _, profiler := range c.perfHwProfilers {
cpuid := c.hwProfilerCPUMap[profiler]
cpuStr := strconv.Itoa(cpuid)
hwProfile, err := (*profiler).Profile()
if err != nil {
return err
@ -594,11 +593,13 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
continue
}
cpuid := strconv.Itoa(c.hwProfilerCPUMap[profiler])
if hwProfile.CPUCycles != nil {
ch <- prometheus.MustNewConstMetric(
c.desc["cpucycles_total"],
prometheus.CounterValue, float64(*hwProfile.CPUCycles),
cpuStr,
cpuid,
)
}
@ -606,7 +607,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["instructions_total"],
prometheus.CounterValue, float64(*hwProfile.Instructions),
cpuStr,
cpuid,
)
}
@ -614,7 +615,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["branch_instructions_total"],
prometheus.CounterValue, float64(*hwProfile.BranchInstr),
cpuStr,
cpuid,
)
}
@ -622,7 +623,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["branch_misses_total"],
prometheus.CounterValue, float64(*hwProfile.BranchMisses),
cpuStr,
cpuid,
)
}
@ -630,7 +631,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_refs_total"],
prometheus.CounterValue, float64(*hwProfile.CacheRefs),
cpuStr,
cpuid,
)
}
@ -638,7 +639,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_misses_total"],
prometheus.CounterValue, float64(*hwProfile.CacheMisses),
cpuStr,
cpuid,
)
}
@ -646,7 +647,7 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["ref_cpucycles_total"],
prometheus.CounterValue, float64(*hwProfile.RefCPUCycles),
cpuStr,
cpuid,
)
}
}
@ -656,8 +657,6 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
for _, profiler := range c.perfSwProfilers {
cpuid := c.swProfilerCPUMap[profiler]
cpuStr := fmt.Sprintf("%d", cpuid)
swProfile, err := (*profiler).Profile()
if err != nil {
return err
@ -666,11 +665,13 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
continue
}
cpuid := strconv.Itoa(c.swProfilerCPUMap[profiler])
if swProfile.PageFaults != nil {
ch <- prometheus.MustNewConstMetric(
c.desc["page_faults_total"],
prometheus.CounterValue, float64(*swProfile.PageFaults),
cpuStr,
cpuid,
)
}
@ -678,7 +679,7 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["context_switches_total"],
prometheus.CounterValue, float64(*swProfile.ContextSwitches),
cpuStr,
cpuid,
)
}
@ -686,7 +687,7 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cpu_migrations_total"],
prometheus.CounterValue, float64(*swProfile.CPUMigrations),
cpuStr,
cpuid,
)
}
@ -694,7 +695,7 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["minor_faults_total"],
prometheus.CounterValue, float64(*swProfile.MinorPageFaults),
cpuStr,
cpuid,
)
}
@ -702,7 +703,7 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["major_faults_total"],
prometheus.CounterValue, float64(*swProfile.MajorPageFaults),
cpuStr,
cpuid,
)
}
}
@ -712,8 +713,6 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
for _, profiler := range c.perfCacheProfilers {
cpuid := c.cacheProfilerCPUMap[profiler]
cpuStr := fmt.Sprintf("%d", cpuid)
cacheProfile, err := (*profiler).Profile()
if err != nil {
return err
@ -722,11 +721,13 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
continue
}
cpuid := strconv.Itoa(c.cacheProfilerCPUMap[profiler])
if cacheProfile.L1DataReadHit != nil {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_l1d_read_hits_total"],
prometheus.CounterValue, float64(*cacheProfile.L1DataReadHit),
cpuStr,
cpuid,
)
}
@ -734,7 +735,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_l1d_read_misses_total"],
prometheus.CounterValue, float64(*cacheProfile.L1DataReadMiss),
cpuStr,
cpuid,
)
}
@ -742,7 +743,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_l1d_write_hits_total"],
prometheus.CounterValue, float64(*cacheProfile.L1DataWriteHit),
cpuStr,
cpuid,
)
}
@ -750,7 +751,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_l1_instr_read_misses_total"],
prometheus.CounterValue, float64(*cacheProfile.L1InstrReadMiss),
cpuStr,
cpuid,
)
}
@ -758,7 +759,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_tlb_instr_read_hits_total"],
prometheus.CounterValue, float64(*cacheProfile.InstrTLBReadHit),
cpuStr,
cpuid,
)
}
@ -766,7 +767,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_tlb_instr_read_misses_total"],
prometheus.CounterValue, float64(*cacheProfile.InstrTLBReadMiss),
cpuStr,
cpuid,
)
}
@ -774,7 +775,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_ll_read_hits_total"],
prometheus.CounterValue, float64(*cacheProfile.LastLevelReadHit),
cpuStr,
cpuid,
)
}
@ -782,7 +783,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_ll_read_misses_total"],
prometheus.CounterValue, float64(*cacheProfile.LastLevelReadMiss),
cpuStr,
cpuid,
)
}
@ -790,7 +791,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_ll_write_hits_total"],
prometheus.CounterValue, float64(*cacheProfile.LastLevelWriteHit),
cpuStr,
cpuid,
)
}
@ -798,7 +799,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_ll_write_misses_total"],
prometheus.CounterValue, float64(*cacheProfile.LastLevelWriteMiss),
cpuStr,
cpuid,
)
}
@ -806,7 +807,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_bpu_read_hits_total"],
prometheus.CounterValue, float64(*cacheProfile.BPUReadHit),
cpuStr,
cpuid,
)
}
@ -814,7 +815,7 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
ch <- prometheus.MustNewConstMetric(
c.desc["cache_bpu_read_misses_total"],
prometheus.CounterValue, float64(*cacheProfile.BPUReadMiss),
cpuStr,
cpuid,
)
}
}

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