diff --git a/src/tool/pps/cfg/intel.cfg b/src/tool/pps/cfg/intel.cfg
index b6a57ef6ea3..87cd24fd6e5 100644
--- a/src/tool/pps/cfg/intel.cfg
+++ b/src/tool/pps/cfg/intel.cfg
@@ -8,7 +8,7 @@ data_sources {
     name: "linux.ftrace"
     target_buffer: 0
     ftrace_config {
-      buffer_size_kb: 16384
+      buffer_size_kb: 65536
       drain_period_ms: 1000
 
       ftrace_events: "scm/scm_call_start"
@@ -83,3 +83,4 @@ data_sources {
 duration_ms: 250
 write_into_file: true
 file_write_period_ms: 500
+flush_period_ms: 500