common/httpserver: enable block and mutex profiling

The value for block should match CPU profiling at 99Hz. The value for
mutex looks low enough to not add too much overhead. There is no
overhead while not profiling.

common/httpserver/root.go

@@ -10,6 +10,7 @@ import (
 	"net"
 	"net/http"
 	"net/http/pprof"
+	"runtime"
 	"time"
 
 	"github.com/chenyahui/gin-cache/persist"
@@ -65,6 +66,8 @@ func New(r *reporter.Reporter, configuration Configuration, dependencies Depende
 		c.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
 		c.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
 		c.mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
+		runtime.SetBlockProfileRate(int(10 * time.Millisecond.Nanoseconds())) // 1/10ms
+		runtime.SetMutexProfileFraction(1000)                                 // 0.1%
 	}
 	return &c, nil
 }

console/data/docs/99-changelog.md

@@ -16,6 +16,7 @@ identified with a specific icon:
   ClickHouse, Kafka and remote data sources (previously, `verify` was set to
   false by default)
 - 🩹 *outlet*: provide additional gracetime for a worker to send to ClickHouse
+- 🌱 *common*: enable block and mutex profiling
 - 🌱 *config*: rename `verify` to `skip-verify` in TLS configurations for
   ClickHouse, Kafka and remote data sources (with inverted logic)
 - 🌱 *config*: remote data sources accept a specific TLS configuration