diff --git a/common-sw.nix b/common-sw.nix
index 8dfcf35..a3c2b1f 100644
--- a/common-sw.nix
+++ b/common-sw.nix
@@ -50,6 +50,8 @@
     msmtp
     vdirsyncer khard khal
 
+    config.boot.kernelPackages.perf
+
     veriT
     minisat
     picosat
diff --git a/common.nix b/common.nix
index 092e50a..3036695 100644
--- a/common.nix
+++ b/common.nix
@@ -40,8 +40,12 @@
   };
   # services.colord.enable = true;
 
-  # IntelliJ
-  boot.kernel.sysctl."fs.inotify.max_user_watches" = 524288;
+  boot.kernel.sysctl = {
+    "kernel.perf_event_paranoid" = "0";
+
+    # IntelliJ
+    "fs.inotify.max_user_watches" = 524288;
+  };
 
   # gapt: `ulimit -n` was 256
   security.pam.loginLimits = [