diff --git a/Makefile b/Makefile
index 1567ac8..af2f963 100644
--- a/Makefile
+++ b/Makefile
@@ -9,13 +9,11 @@ hp0:
 	scp -C ./hp0/* hp0:
 	scp -C ./modules/* hp0:
 	scp -C ./scripts/* hp0:
-	scp -C ./nix_switch.bash hp0:
 
 hp3:
 	scp -C ./hp3/* hp3:
 	scp -C ./modules/* hp3:
 	scp -C ./scripts/* hp3:
-	scp -C ./nix_switch.bash hp3:
 
 #
 # end
\ No newline at end of file
diff --git a/hp0/configuration.nix b/hp0/configuration.nix
index 1f774f7..d5bf847 100644
--- a/hp0/configuration.nix
+++ b/hp0/configuration.nix
@@ -27,9 +27,11 @@
       ./hosts.nix
       ./firewall.nix
       ./il8n.nix
-      ./systemdSystem.nix
+      #./systemdSystem.nix
       ./systemPackages.nix
       ./home-manager.nix
+      #./prometheus.nix
+      #./grafana.nix
     ];
 
   # Bootloader.
@@ -89,7 +91,7 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "23.11"; # Did you read the comment?
+  system.stateVersion = "24.05"; # Did you read the comment?
 
   # virtualisation.libvirtd.enable = true;
   # programs.virt-manager.enable = true;
diff --git a/hp0/hardware-configuration.nix b/hp0/hardware-configuration.nix
index fedeb1f..0f0208f 100644
--- a/hp0/hardware-configuration.nix
+++ b/hp0/hardware-configuration.nix
@@ -14,19 +14,17 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/2d466236-2a60-448a-8d1f-eb6f06f9a3fb";
+    { device = "/dev/disk/by-uuid/1b9937be-2d96-4cfc-b8b4-eefebea96006";
       fsType = "ext4";
     };
 
   fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/0126-0D03";
+    { device = "/dev/disk/by-uuid/6E73-1390";
       fsType = "vfat";
       options = [ "fmask=0022" "dmask=0022" ];
     };
 
-  swapDevices =
-    [ { device = "/dev/disk/by-uuid/8b35fd91-a490-42f3-845b-27f2856c175e"; }
-    ];
+  swapDevices = [ ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
@@ -34,7 +32,7 @@
   # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
   networking.useDHCP = lib.mkDefault true;
   # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
-  # networking.interfaces.wlp2s0f0u10.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp3s0.useDHCP = lib.mkDefault true;
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
   hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
diff --git a/hp3/configuration.nix b/hp3/configuration.nix
index ad671d2..38aecb8 100644
--- a/hp3/configuration.nix
+++ b/hp3/configuration.nix
@@ -27,9 +27,11 @@
       ./hosts.nix
       ./firewall.nix
       ./il8n.nix
-      ./systemdSystem.nix
+      #./systemdSystem.nix
       ./systemPackages.nix
       ./home-manager.nix
+      #./prometheus.nix
+      #./grafana.nix
     ];
 
   # Bootloader.
@@ -89,7 +91,7 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "23.11"; # Did you read the comment?
+  system.stateVersion = "24.05"; # Did you read the comment?
 
   # virtualisation.libvirtd.enable = true;
   # programs.virt-manager.enable = true;
diff --git a/hp3/hardware-configuration.nix b/hp3/hardware-configuration.nix
index 4175b2e..9f914b6 100644
--- a/hp3/hardware-configuration.nix
+++ b/hp3/hardware-configuration.nix
@@ -14,18 +14,18 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/f228ac2a-53f3-474a-a1da-b97f07048893";
+    { device = "/dev/disk/by-uuid/21e4f4e0-b8ec-4024-839f-820af51a27ec";
       fsType = "ext4";
     };
 
   fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/43B1-1B2C";
+    { device = "/dev/disk/by-uuid/CC67-5B9D";
       fsType = "vfat";
       options = [ "fmask=0022" "dmask=0022" ];
     };
 
   swapDevices =
-    [ { device = "/dev/disk/by-uuid/a9e009c6-ad85-44e5-ad69-4496fba37d5b"; }
+    [ { device = "/dev/disk/by-uuid/a6da1204-1444-4e5a-a27f-b4cc64d7f320"; }
     ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
diff --git a/modules/grafana.nix b/modules/grafana.nix
new file mode 100644
index 0000000..d5e8870
--- /dev/null
+++ b/modules/grafana.nix
@@ -0,0 +1,10 @@
+{ config, pkgs, ... }:
+{
+  # https://xeiaso.net/blog/prometheus-grafana-loki-nixos-2020-11-20/
+  services.grafana = {
+    enable = true;
+    #domain = "grafana.pele";
+    #port = 2342;
+    #addr = "127.0.0.1";
+  };
+}
\ No newline at end of file
diff --git a/modules/prometheus.nix b/modules/prometheus.nix
new file mode 100644
index 0000000..b504d46
--- /dev/null
+++ b/modules/prometheus.nix
@@ -0,0 +1,9 @@
+{ config, pkgs, ... }:
+{
+  services.prometheus = {
+    enable = true;
+    port = 9000;
+    # https://github.com/NixOS/nixpkgs/blob/nixos-24.05/nixos/modules/services/monitoring/prometheus/exporters.nix
+    enabledCollectors = [ "systemd" ];
+  };
+}
\ No newline at end of file
diff --git a/modules/systemdSystem.nix b/modules/systemdSystem.nix
index 92f23c1..5b04c17 100644
--- a/modules/systemdSystem.nix
+++ b/modules/systemdSystem.nix
@@ -5,10 +5,10 @@
   # https://discourse.nixos.org/t/overriding-modifying-systemd-unit-file/45621/7
 
   # https://mynixos.com/nixpkgs/options/systemd
-  systemd.extraConfig = "CPUAffinity=2-7";
+  systemd.extraConfig = "CPUAffinity=4-7";
 
   #https://mynixos.com/options/systemd.user
-  systemd.user.extraConfig = "CPUAffinity=2-7";
+  systemd.user.extraConfig = "CPUAffinity=4-7";
   # create your own service
   # https://discourse.nixos.org/t/how-to-use-toplevel-overrides-for-systemd/12501
 }
\ No newline at end of file
diff --git a/modules/wireless.nix b/modules/wireless.nix
index b03aa69..7c02b5e 100644
--- a/modules/wireless.nix
+++ b/modules/wireless.nix
@@ -3,7 +3,7 @@
 {
   networking.wireless = {
     enable = true;  # Enables wireless support via wpa_supplicant.
-    environmentFile = "/home/das/wireless.env";
+    #environmentFile = "/home/das/wireless.env";
     networks."devices".psk = "performance";
     #networks."devices".psk = "@PSK_DEVICES@";
     extraConfig = "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=wheel";
diff --git a/nix_switch.bash b/scripts/nix_switch.bash
old mode 100644
new mode 100755
similarity index 76%
rename from nix_switch.bash
rename to scripts/nix_switch.bash
index 87c50b6..cd21e4c
--- a/nix_switch.bash
+++ b/scripts/nix_switch.bash
@@ -1,7 +1,6 @@
-#!/run/current-system/sw/bin/bash
+#!/usr/bin/bash
 #
 sudo cp ./*.nix /etc/nixos/
 sudo nixos-rebuild switch
 
-
 #sudo ln -s /run/current-system/sw/bin/bash /usr/bin/bash
\ No newline at end of file
diff --git a/scripts/pin_nic_irqs.bash b/scripts/pin_nic_irqs.bash
index 4ca245b..7d51971 100755
--- a/scripts/pin_nic_irqs.bash
+++ b/scripts/pin_nic_irqs.bash
@@ -20,6 +20,8 @@
 #   95:          0          0          0          0          3          0          0          0  IR-PCI-MSIX-0000:03:00.0    9-edge      iwlwifi:exception
 # grep iwlwifi /proc/interrupts | awk '{ print $1 }' | sed -e 's/://'
 
+CORES="0-3"
+
 echo "starting to pin"
 echo "BEFORE"
 echo "grep iwlwifi /proc/interrupts"
@@ -28,8 +30,8 @@ grep iwlwifi /proc/interrupts
 for i in {86..95}
 do
   echo "Loop:${i}"
-  echo "echo 0-1 > /proc/irq/${i}/smp_affinity_list"
-  echo 0-1 > /proc/irq/"${i}"/smp_affinity_list
+  echo "echo ${CORES} > /proc/irq/${i}/smp_affinity_list"
+  echo "${CORES}" > /proc/irq/"${i}"/smp_affinity_list
   echo "cat /proc/irq/${i}/smp_affinity_list"
   cat /proc/irq/"${i}"/smp_affinity_list
 done
@@ -41,5 +43,5 @@ grep iwlwifi /proc/interrupts
 #[das@hp0:~]$ grep eno /proc/interrupts
 #  83:          0          0          0          0          0          0          0          0  IR-PCI-MSIX-0000:05:00.0    0-edge      eno1
 
-echo "echo 0-1 > /proc/irq/83/smp_affinity_list"
-echo 0-1 > /proc/irq/83/smp_affinity_list
+echo "echo ${CORES} > /proc/irq/83/smp_affinity_list"
+echo "${CORES}" > /proc/irq/83/smp_affinity_list
diff --git a/scripts/setup_bash_sym_link.bash b/scripts/setup_bash_sym_link.bash
new file mode 100755
index 0000000..96ed699
--- /dev/null
+++ b/scripts/setup_bash_sym_link.bash
@@ -0,0 +1,3 @@
+#!/run/current-system/sw/bin/bash
+#
+sudo ln -s /run/current-system/sw/bin/bash /usr/bin/bash
\ No newline at end of file
diff --git a/scripts/start_flent_client.bash b/scripts/start_flent_client.bash
new file mode 100755
index 0000000..6a60e14
--- /dev/null
+++ b/scripts/start_flent_client.bash
@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+
+netserver
\ No newline at end of file
diff --git a/scripts/start_flent_server.bash b/scripts/start_flent_server.bash
new file mode 100755
index 0000000..a73b055
--- /dev/null
+++ b/scripts/start_flent_server.bash
@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+
+/usr/local/bin/iperf -c 172.16.40.130 --interval 1 --time 30 -e -w 4M --tcp-write-prefetch 128K
\ No newline at end of file
diff --git a/scripts/start_iperf_client.bash b/scripts/start_iperf_client.bash
new file mode 100755
index 0000000..a73b055
--- /dev/null
+++ b/scripts/start_iperf_client.bash
@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+
+/usr/local/bin/iperf -c 172.16.40.130 --interval 1 --time 30 -e -w 4M --tcp-write-prefetch 128K
\ No newline at end of file