feat: kubevirt - use 75% of the memory for hugepages

hosts/k8s/README.md

@@ -28,11 +28,7 @@ Clusters running as virtual machines on the KubeVirt cluster, for testing and pr
    1. `k3s-prod-1-worker-1`
    1. `k3s-prod-1-worker-2`
    1. `k3s-prod-1-worker-3`
-1. For testing:.
-   1. `k3s-test-1-master-1`
-   2. `k3s-test-1-worker-1`
-   3. `k3s-test-1-worker-2`
-   4. `k3s-test-1-worker-3`
+1. For testing:. 2. `k3s-test-1-master-1` 3. `k3s-test-1-master-2` 4. `k3s-test-1-master-3`
 
 ## Kubernetes Resources
 

hosts/k8s/kubevirt-shoryu/default.nix

@@ -58,8 +58,8 @@ in {
     #
     # pre-allocate hugepages manually(for kubevirt guest vms)
     # NOTE: the hugepages allocated here can not be used for other purposes!
-    # so we should left some memory for the host OS
+    # so we should left some memory for the host OS and other vms that don't use hugepages
     "hugepagesz=1G"
-    "hugepages=54"
+    "hugepages=48" # use 75% of the total memory for hugepages
   ];
 }

hosts/k8s/kubevirt-shushou/default.nix

@@ -52,8 +52,8 @@ in {
     #
     # pre-allocate hugepages manually(for kubevirt guest vms)
     # NOTE: the hugepages allocated here can not be used for other purposes!
-    # so we should left some memory for the host OS
+    # so we should left some memory for the host OS and other vms that don't use hugepages
     "hugepagesz=1G"
-    "hugepages=55"
+    "hugepages=48" # use 75% of the total memory for hugepages
   ];
 }

hosts/k8s/kubevirt-youko/default.nix

@@ -52,9 +52,9 @@ in {
     #
     # pre-allocate hugepages manually(for kubevirt guest vms)
     # NOTE: the hugepages allocated here can not be used for other purposes!
-    # so we should left some memory for the host OS
+    # so we should left some memory for the host OS and other vms that don't use hugepages
     "hugepagesz=1G"
-    "hugepages=16"
+    "hugepages=15" # use 15/24 of the total memory for hugepages
 
     # https://kubevirt.io/user-guide/compute/host-devices/
     #