From 78aa0b6d712d4ab0e038d33b6f4b5f41b95a0080 Mon Sep 17 00:00:00 2001
From: Andrej Babic <andrej.babic@psi.ch>
Date: Mon, 11 May 2020 18:27:33 +0200
Subject: [PATCH] Set nice to -20 for buffer

---
 sf-buffer/src/sf_buffer.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sf-buffer/src/sf_buffer.cpp b/sf-buffer/src/sf_buffer.cpp
index 4c18c0c..eebfac0 100644
--- a/sf-buffer/src/sf_buffer.cpp
+++ b/sf-buffer/src/sf_buffer.cpp
@@ -7,6 +7,10 @@
 #include "jungfrau.hpp"
 #include "BufferUdpReceiver.hpp"
 
+#include <sys/resource.h>
+#include <syscall.h>
+
+
 
 using namespace std;
 using namespace core_buffer;
@@ -26,6 +30,11 @@ int main (int argc, char *argv[]) {
         exit(-1);
     }
 
+    pid_t tid;
+    tid = syscall(SYS_gettid);
+    int ret = setpriority(PRIO_PROCESS, tid, -20);
+    if (ret == -1) throw runtime_error("cannot set nice");
+
     string device_name = string(argv[1]);
     int udp_port = atoi(argv[2]);
     string root_folder = string(argv[3]);