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Add additional perf counters for stalled frontend/backend cycles (#2191)

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* Add stalled frontend/backend cycles counters for perf collector

Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>

* Update collector/perf_linux.go

Co-authored-by: Ben Kochie <superq@gmail.com>
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>

* Update collector/perf_linux.go

Co-authored-by: Ben Kochie <superq@gmail.com>
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>

Co-authored-by: Ben Kochie <superq@gmail.com>
This commit is contained in:
Daniel Hodges 2022-08-02 08:42:48 -04:00 committed by GitHub
parent 9ed32666cc
commit b43db0de6e
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 45 additions and 0 deletions
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45
collector/perf_linux.go
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@ -397,6 +397,26 @@ func NewPerfCollector(logger log.Logger) (Collector, error) {
[]string{"cpu"}, []string{"cpu"},
nil, nil,
), ),
"stalled_cycles_backend_total": prometheus.NewDesc(
prometheus.BuildFQName(
namespace,
perfSubsystem,
"stalled_cycles_backend_total",
),
"Number of stalled backend CPU cycles",
[]string{"cpu"},
nil,
),
"stalled_cycles_frontend_total": prometheus.NewDesc(
prometheus.BuildFQName(
namespace,
perfSubsystem,
"stalled_cycles_frontend_total",
),
"Number of stalled frontend CPU cycles",
[]string{"cpu"},
nil,
),
"page_faults_total": prometheus.NewDesc( "page_faults_total": prometheus.NewDesc(
prometheus.BuildFQName( prometheus.BuildFQName(
namespace, namespace,
@ -598,6 +618,9 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
if err := (*profiler).Profile(hwProfile); err != nil { if err := (*profiler).Profile(hwProfile); err != nil {
return err return err
} }
if hwProfile == nil {
continue
}
cpuid := strconv.Itoa(c.hwProfilerCPUMap[profiler]) cpuid := strconv.Itoa(c.hwProfilerCPUMap[profiler])
@ -656,6 +679,22 @@ func (c *perfCollector) updateHardwareStats(ch chan<- prometheus.Metric) error {
cpuid, cpuid,
) )
} }
if hwProfile.StalledCyclesBackend != nil {
ch <- prometheus.MustNewConstMetric(
c.desc["stalled_cycles_backend_total"],
prometheus.CounterValue, float64(*hwProfile.StalledCyclesBackend),
cpuid,
)
}
if hwProfile.StalledCyclesFrontend != nil {
ch <- prometheus.MustNewConstMetric(
c.desc["stalled_cycles_frontend_total"],
prometheus.CounterValue, float64(*hwProfile.StalledCyclesFrontend),
cpuid,
)
}
} }
return nil return nil
@ -667,6 +706,9 @@ func (c *perfCollector) updateSoftwareStats(ch chan<- prometheus.Metric) error {
if err := (*profiler).Profile(swProfile); err != nil { if err := (*profiler).Profile(swProfile); err != nil {
return err return err
} }
if swProfile == nil {
continue
}
cpuid := strconv.Itoa(c.swProfilerCPUMap[profiler]) cpuid := strconv.Itoa(c.swProfilerCPUMap[profiler])
@ -720,6 +762,9 @@ func (c *perfCollector) updateCacheStats(ch chan<- prometheus.Metric) error {
if err := (*profiler).Profile(cacheProfile); err != nil { if err := (*profiler).Profile(cacheProfile); err != nil {
return err return err
} }
if cacheProfile == nil {
continue
}
cpuid := strconv.Itoa(c.cacheProfilerCPUMap[profiler]) cpuid := strconv.Itoa(c.cacheProfilerCPUMap[profiler])