diff --git a/plugins/performance/perfmonitor/common/event_builder/xperf_event_builder.cpp b/plugins/performance/perfmonitor/common/event_builder/xperf_event_builder.cpp
index c88215c1c49d569d5d3be8221084adbfd3039a38..c684c194bff5e61c6481197a10eb975aafce6a29 100644
--- a/plugins/performance/perfmonitor/common/event_builder/xperf_event_builder.cpp
+++ b/plugins/performance/perfmonitor/common/event_builder/xperf_event_builder.cpp
@@ -187,9 +187,13 @@ XperfEventBuilder& XperfEventBuilder::Param(const char* name, const std::vector<
 {
     HiSysEventParam param = {
         .t = HISYSEVENT_UINT16_ARRAY,
-        .v = { .array = static_cast<void*>(const_cast<uint16_t*>(value.data())) },
-        .arraySize = value.size(),
+        .v = { .array = nullptr },
+        .arraySize = 0,
     };
+    if (!value.empty()) {
+        param.v.array = static_cast<void*>(const_cast<uint16_t*>(value.data()));
+        param.arraySize = value.size();
+    }
     SetParamName(param, name);
     paramList.push_back(param);
     return *this;
diff --git a/plugins/performance/perfmonitor/common/perf_trace.h b/plugins/performance/perfmonitor/common/perf_trace.h
index ff830599e61199232dbba8eb3393dd236331f829..f94c8cd52748061322fc7d02c01b80954b7b5a84 100644
--- a/plugins/performance/perfmonitor/common/perf_trace.h
+++ b/plugins/performance/perfmonitor/common/perf_trace.h
@@ -23,7 +23,7 @@
 
 namespace OHOS {
 namespace HiviewDFX {
-constexpr int TRACE_BUF_LEN = 128;
+constexpr int TRACE_BUF_LEN = 256;
 void XperfStartTrace(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
 void FormatTraceName(char *name, size_t size, const char *fmt, ...) __attribute__((format(printf, 3, 4)));