diff --git a/frontend/server/server.go b/frontend/server/server.go
index 3ff9c4f1..a835a302 100644
--- a/frontend/server/server.go
+++ b/frontend/server/server.go
@@ -783,7 +783,7 @@ func (m *mainSrv) startChild(req string, addr *net.UDPAddr, conf2 Config) {
 	// }(&conf2, m.exChan, m.whChan)
 
 	// timeout read key from worker
-	timer := time.NewTimer(time.Duration(140) * time.Millisecond)
+	timer := time.NewTimer(time.Duration(145) * time.Millisecond)
 	select {
 	case <-timer.C:
 		delete(m.workers, p) // clear failed worker
diff --git a/frontend/server/server_test.go b/frontend/server/server_test.go
index 90966518..5b0db45b 100644
--- a/frontend/server/server_test.go
+++ b/frontend/server/server_test.go
@@ -14,6 +14,7 @@ import (
 	"os"
 	"os/exec"
 	"reflect"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync"
@@ -707,6 +708,9 @@ func TestMainSrvStart(t *testing.T) {
 		},
 	}
 
+	if runtime.GOARCH == "riscv64" {
+		t.Skip("riscv64 timer is not as accurate as other platform, skip this test.")
+	}
 	// the test start child process, which is /usr/bin/apshd
 	// which means you need to compile /usr/bin/apshd before test
 	for _, v := range tc {