schedule: filter by the specific threads

Signed-off-by: Shafreeck Sea <shafreeck@gmail.com>

server/cluster_stat.go

@@ -19,9 +19,9 @@ import (
 	"time"
 
 	"github.com/pingcap/kvproto/pkg/pdpb"
+	"github.com/pingcap/log"
 	"github.com/pingcap/pd/pkg/slice"
 	"github.com/pingcap/pd/server/statistics"
-	"github.com/pingcap/log"
 	"go.uber.org/zap"
 )
 
@@ -94,6 +94,10 @@ func (s LoadState) String() string {
 	return "none"
 }
 
+// ThreadsCollected filters the threads to take into
+// the calculation of CPU usage.
+var ThreadsCollected = []string{"grpc-server-"}
+
 // NumberOfEntries is the max number of StatEntry that preserved,
 // it is the history of a store's hearbeats. The interval of store
 // hearbeats from TiKV is 10s, so we can preserve 30 entries per
@@ -174,7 +178,7 @@ func (cst *ClusterStatEntries) Append(stat *StatEntry) {
 		cst.stats[storeID] = entries
 	}
 
-	entries.Append(stat)
+	entries.Append(stat, ThreadsCollected...)
 }
 
 func contains(slice []uint64, value uint64) bool {