Added pprof tool (#2512)
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@ -56,6 +56,7 @@ be deprecated eventually.
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- [#2339](https://github.com/influxdata/telegraf/pull/2339): Increment gather_errors for all errors emitted by inputs.
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- [#2071](https://github.com/influxdata/telegraf/issues/2071): Use official docker SDK.
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- [#1678](https://github.com/influxdata/telegraf/pull/1678): Add AMQP consumer input plugin
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- [#2512](https://github.com/influxdata/telegraf/pull/2512): Added pprof tool.
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- [#2501](https://github.com/influxdata/telegraf/pull/2501): Support DEAD(X) state in system input plugin.
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- [#2522](https://github.com/influxdata/telegraf/pull/2522): Add support for mongodb client certificates.
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- [#1948](https://github.com/influxdata/telegraf/pull/1948): Support adding SNMP table indexes as tags.
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@ -4,6 +4,8 @@ import (
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"flag"
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"fmt"
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"log"
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"net/http"
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_ "net/http/pprof" // Comment this line to disable pprof endpoint.
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"os"
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"os/signal"
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"runtime"
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@ -24,6 +26,8 @@ import (
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var fDebug = flag.Bool("debug", false,
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"turn on debug logging")
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var pprofAddr = flag.String("pprof-addr", "",
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"pprof address to listen on, not activate pprof if empty")
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var fQuiet = flag.Bool("quiet", false,
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"run in quiet mode")
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var fTest = flag.Bool("test", false, "gather metrics, print them out, and exit")
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@ -87,6 +91,7 @@ The commands & flags are:
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--output-filter filter the output plugins to enable, separator is :
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--usage print usage for a plugin, ie, 'telegraf --usage mysql'
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--debug print metrics as they're generated to stdout
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--pprof-addr pprof address to listen on, format: localhost:6060 or :6060
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--quiet run in quiet mode
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Examples:
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@ -105,6 +110,9 @@ Examples:
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# run telegraf, enabling the cpu & memory input, and influxdb output plugins
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telegraf --config telegraf.conf --input-filter cpu:mem --output-filter influxdb
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# run telegraf with pprof
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telegraf --config telegraf.conf --pprof-addr localhost:6060
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`
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var stop chan struct{}
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@ -267,6 +275,23 @@ func main() {
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processorFilters = strings.Split(":"+strings.TrimSpace(*fProcessorFilters)+":", ":")
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}
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if *pprofAddr != "" {
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go func() {
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pprofHostPort := *pprofAddr
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parts := strings.Split(pprofHostPort, ":")
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if len(parts) == 2 && parts[0] == "" {
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pprofHostPort = fmt.Sprintf("localhost:%s", parts[1])
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}
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pprofHostPort = "http://" + pprofHostPort + "/debug/pprof"
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log.Printf("I! Starting pprof HTTP server at: %s", pprofHostPort)
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if err := http.ListenAndServe(*pprofAddr, nil); err != nil {
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log.Fatal("E! " + err.Error())
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}
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}()
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}
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if len(args) > 0 {
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switch args[0] {
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case "version":
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@ -0,0 +1,24 @@
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# Telegraf profiling
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Telegraf uses the standard package `net/http/pprof`. This package serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool.
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By default, the profiling is turned off.
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To enable profiling you need to specify address to config parameter `pprof-addr`, for example:
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```
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telegraf --config telegraf.conf --pprof-addr localhost:6060
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```
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There are several paths to get different profiling information:
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To look at the heap profile:
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`go tool pprof http://localhost:6060/debug/pprof/heap`
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or to look at a 30-second CPU profile:
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`go tool pprof http://localhost:6060/debug/pprof/profile?seconds=30`
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To view all available profiles, open `http://localhost:6060/debug/pprof/` in your browser.
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