moss: Prime vfs cache on boot via systemd service

Additionally, include a oneshot .service for testing the time to prime w/ a cold vfs cache. Signed-off-by: Rune Morling <[email protected]>
serpent-os · Jan 13, 2025 · 87b2c75 · 87b2c75
1 parent 767cd8a
commit 87b2c75
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Showing 5 changed files with 25 additions and 2 deletions.
diff --git a/m/moss/manifest.x86_64.bin b/m/moss/manifest.x86_64.bin
diff --git a/m/moss/manifest.x86_64.jsonc b/m/moss/manifest.x86_64.jsonc
@@ -20,6 +20,7 @@
 				"/usr/lib/kernel/cmdline.d/10-amdgpu.cmdline",
 				"/usr/lib/moss/moss-fstx.sh",
 				"/usr/lib/systemd/system/moss-fstx.service",
+				"/usr/lib/systemd/system/moss-prime-asset-store-vfs-cache.service",
 				"/usr/share/bash-completion/completions/moss",
 				"/usr/share/defaults/etc/profile.d/80-command-not-found.sh",
 				"/usr/share/fish/completions/moss.fish",
@@ -63,6 +64,6 @@
 		}
 	},
 	"source-name": "moss",
-	"source-release": "76",
+	"source-release": "77",
 	"source-version": "0.25.1"
 }
diff --git a/m/moss/pkg/moss-benchmark-time-to-prime-asset-store-vfs-cache.service b/m/moss/pkg/moss-benchmark-time-to-prime-asset-store-vfs-cache.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=Time to prime moss asset store in vfs cache in the background
+RequiresMount=/
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/bash -c "sync && echo 3 > /proc/sys/vm/drop_caches"
+ExecStart=/usr/bin/bash -c "time nice -n20 ionice -c Idle find /.moss/assets |xargs --max-lines=1000 --max-procs=$(nproc) stat -t >/dev/null"
diff --git a/m/moss/pkg/moss-prime-asset-store-vfs-cache.service b/m/moss/pkg/moss-prime-asset-store-vfs-cache.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=Prime moss asset store in vfs cache in the background
+RequiresMountsFor=/
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/bash -c "time nice -n20 ionice -c Idle find /.moss/assets |xargs --max-lines=1000 --max-procs=$(nproc) stat -t >/dev/null"
+
+[Install]
+WantedBy=basic.target
diff --git a/m/moss/stone.yaml b/m/moss/stone.yaml
@@ -5,7 +5,7 @@
 #
 name        : moss
 version     : 0.25.1
-release     : 76
+release     : 77
 summary     : Serpent OS package manager
 license     : MPL-2.0
 homepage    : https://github.com/serpent-os/tools
@@ -61,3 +61,7 @@ install     : |
     %install_file boot/module/module-setup.sh %(installroot)%(libdir)/dracut/modules.d/90moss/module-setup.sh
     %install_file boot/moss-fstx.service %(installroot)%(libdir)/systemd/system/moss-fstx.service
     %install_exe boot/moss-fstx.sh %(installroot)%(libdir)/moss/moss-fstx.sh
+
+    # Ensure that blits happen against hot vfs cache (quicker first blits)
+    %install_file %(pkgdir)/moss-prime-asset-store-vfs-cache.service %(installroot)%(libdir)/systemd/system/moss-prime-asset-store-vfs-cache.service
+    %install_file %(pkgdir)/moss-benchmark-time-to-prime-asset-store-vfs-cache.service %(installroot)%(libdir)/systemd/system/moss-prime-asset-store-vfs-cache.service