b3711af051
* cmd/swarm: minor cli flag text adjustments * swarm/api/http: sticky footer for swarm landing page using flex * swarm/api/http: sticky footer for error pages and fix for multiple choices * cmd/swarm, swarm/storage, swarm: fix mingw on windows test issues * cmd/swarm: update description of swarm cmd * swarm: added network ID test * cmd/swarm: support for smoke tests on the production swarm cluster * cmd/swarm/swarm-smoke: simplify cluster logic as per suggestion * swarm: propagate ctx to internal apis (#754) * swarm/metrics: collect disk measurements * swarm/bmt: fix io.Writer interface * Write now tolerates arbitrary variable buffers * added variable buffer tests * Write loop and finalise optimisation * refactor / rename * add tests for empty input * swarm/pss: (UPDATE) Generic notifications package (#744) swarm/pss: Generic package for creating pss notification svcs * swarm: Adding context to more functions * swarm/api: change colour of landing page in templates * swarm/api: change landing page to react to enter keypress
95 lines
3.7 KiB
Go
95 lines
3.7 KiB
Go
// Go port of Coda Hale's Metrics library
|
|
//
|
|
// <https://github.com/rcrowley/go-metrics>
|
|
//
|
|
// Coda Hale's original work: <https://github.com/codahale/metrics>
|
|
package metrics
|
|
|
|
import (
|
|
"os"
|
|
"runtime"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/log"
|
|
)
|
|
|
|
// Enabled is checked by the constructor functions for all of the
|
|
// standard metrics. If it is true, the metric returned is a stub.
|
|
//
|
|
// This global kill-switch helps quantify the observer effect and makes
|
|
// for less cluttered pprof profiles.
|
|
var Enabled bool = false
|
|
|
|
// MetricsEnabledFlag is the CLI flag name to use to enable metrics collections.
|
|
const MetricsEnabledFlag = "metrics"
|
|
const DashboardEnabledFlag = "dashboard"
|
|
|
|
// Init enables or disables the metrics system. Since we need this to run before
|
|
// any other code gets to create meters and timers, we'll actually do an ugly hack
|
|
// and peek into the command line args for the metrics flag.
|
|
func init() {
|
|
for _, arg := range os.Args {
|
|
if flag := strings.TrimLeft(arg, "-"); flag == MetricsEnabledFlag || flag == DashboardEnabledFlag {
|
|
log.Info("Enabling metrics collection")
|
|
Enabled = true
|
|
}
|
|
}
|
|
}
|
|
|
|
// CollectProcessMetrics periodically collects various metrics about the running
|
|
// process.
|
|
func CollectProcessMetrics(refresh time.Duration) {
|
|
// Short circuit if the metrics system is disabled
|
|
if !Enabled {
|
|
return
|
|
}
|
|
// Create the various data collectors
|
|
memstats := make([]*runtime.MemStats, 2)
|
|
diskstats := make([]*DiskStats, 2)
|
|
for i := 0; i < len(memstats); i++ {
|
|
memstats[i] = new(runtime.MemStats)
|
|
diskstats[i] = new(DiskStats)
|
|
}
|
|
// Define the various metrics to collect
|
|
memAllocs := GetOrRegisterMeter("system/memory/allocs", DefaultRegistry)
|
|
memFrees := GetOrRegisterMeter("system/memory/frees", DefaultRegistry)
|
|
memInuse := GetOrRegisterMeter("system/memory/inuse", DefaultRegistry)
|
|
memPauses := GetOrRegisterMeter("system/memory/pauses", DefaultRegistry)
|
|
|
|
var diskReads, diskReadBytes, diskWrites, diskWriteBytes Meter
|
|
var diskReadBytesCounter, diskWriteBytesCounter Counter
|
|
if err := ReadDiskStats(diskstats[0]); err == nil {
|
|
diskReads = GetOrRegisterMeter("system/disk/readcount", DefaultRegistry)
|
|
diskReadBytes = GetOrRegisterMeter("system/disk/readdata", DefaultRegistry)
|
|
diskReadBytesCounter = GetOrRegisterCounter("system/disk/readbytes", DefaultRegistry)
|
|
diskWrites = GetOrRegisterMeter("system/disk/writecount", DefaultRegistry)
|
|
diskWriteBytes = GetOrRegisterMeter("system/disk/writedata", DefaultRegistry)
|
|
diskWriteBytesCounter = GetOrRegisterCounter("system/disk/writebytes", DefaultRegistry)
|
|
} else {
|
|
log.Debug("Failed to read disk metrics", "err", err)
|
|
}
|
|
// Iterate loading the different stats and updating the meters
|
|
for i := 1; ; i++ {
|
|
location1 := i % 2
|
|
location2 := (i - 1) % 2
|
|
|
|
runtime.ReadMemStats(memstats[location1])
|
|
memAllocs.Mark(int64(memstats[location1].Mallocs - memstats[location2].Mallocs))
|
|
memFrees.Mark(int64(memstats[location1].Frees - memstats[location2].Frees))
|
|
memInuse.Mark(int64(memstats[location1].Alloc - memstats[location2].Alloc))
|
|
memPauses.Mark(int64(memstats[location1].PauseTotalNs - memstats[location2].PauseTotalNs))
|
|
|
|
if ReadDiskStats(diskstats[location1]) == nil {
|
|
diskReads.Mark(diskstats[location1].ReadCount - diskstats[location2].ReadCount)
|
|
diskReadBytes.Mark(diskstats[location1].ReadBytes - diskstats[location2].ReadBytes)
|
|
diskWrites.Mark(diskstats[location1].WriteCount - diskstats[location2].WriteCount)
|
|
diskWriteBytes.Mark(diskstats[location1].WriteBytes - diskstats[location2].WriteBytes)
|
|
|
|
diskReadBytesCounter.Inc(diskstats[location1].ReadBytes - diskstats[location2].ReadBytes)
|
|
diskWriteBytesCounter.Inc(diskstats[location1].WriteBytes - diskstats[location2].WriteBytes)
|
|
}
|
|
time.Sleep(refresh)
|
|
}
|
|
}
|