diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..0cc8d77
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+# git config merge.theirs.name "Always accept theirs"
+# git config merge.theirs.driver "cp %B %A"
+default.pgo binary merge=theirs
diff --git a/.goreleaser.yml b/.goreleaser.yml
index 87e4f73..4e4ee2d 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -10,13 +10,15 @@ before:
     - go generate ./...
 
 builds:
-  - binary: '{{ .ProjectName }}'
+  - id: default
+    binary: '{{ .ProjectName }}'
     goos:
       - darwin
       - freebsd
       - linux
       - netbsd
       - openbsd
+      - windows
     goarch:
       - 386
       - amd64
@@ -34,15 +36,92 @@ builds:
     ignore:
       - goos: darwin
         goarch: 386
+      - goos: darwin
+        goarch: arm
       - goos: freebsd
         goarch: arm64
       - goos: netbsd
         goarch: arm64
       - goos: openbsd
         goarch: arm64
+      - goos: windows
+        goarch: 386
+      - goos: windows
+        goarch: arm
+  - id: mips
+    binary: '{{ .ProjectName }}'
+    goos:
+      - linux
+    goarch:
+      - mips
+      - mipsle
+    gomips:
+      - softfloat
+    env:
+      - CGO_ENABLED=0
+    flags:
+      - -trimpath
+      - -mod=readonly
+    ldflags: -s -w -X main.version={{ .Version }}
+  - id: arm64-v9
+    binary: '{{ .ProjectName }}'
+    goos:
+      - darwin
+      - linux
+    goarch:
+      - arm64
+    goarm64:
+      - v9.0
+    env:
+      - CGO_ENABLED=0
+    flags:
+      - -trimpath
+      - -mod=readonly
+    ldflags: -s -w -X main.version={{ .Version }}
+  - id: amd64-v3
+    binary: '{{ .ProjectName }}'
+    goos:
+      - darwin
+      - freebsd
+      - linux
+      - netbsd
+      - openbsd
+      - windows
+    goarch:
+      - amd64
+    goamd64:
+      - v3
+    env:
+      - CGO_ENABLED=0
+    flags:
+      - -trimpath
+      - -mod=readonly
+    ldflags: -s -w -X main.version={{ .Version }}
 
 archives:
-  - name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}'
+  - id: default
+    ids:
+      - default
+      - mips
+    name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}'
+    formats:
+      - tar.gz
+    wrap_in_directory: true
+    format_overrides:
+      - goos: windows
+        formats:
+          - zip
+    files:
+      - LICENSE
+      - README.md
+      - SECURITY.md
+      - BEST_PRACTICES.md
+      - example.config.toml
+  - id: optimized
+    ids:
+      - arm64-v9
+      - amd64-v3
+    name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm64 }}-{{ .Arm64 }}{{ end }}{{ if .Amd64 }}-{{ .Amd64 }}{{ end }}'
     formats:
       - tar.gz
     wrap_in_directory: true
diff --git a/README.md b/README.md
index 106a02b..6e24771 100644
--- a/README.md
+++ b/README.md
@@ -380,6 +380,7 @@ ExecStart=/usr/local/bin/mtg run /etc/mtg.toml
 Restart=always
 RestartSec=3
 DynamicUser=true
+LimitNOFILE=65536
 AmbientCapabilities=CAP_NET_BIND_SERVICE
 
 [Install]
diff --git a/default.pgo b/default.pgo
new file mode 100644
index 0000000..c6a6454
Binary files /dev/null and b/default.pgo differ
diff --git a/main.go b/main.go
index 1f3a7d5..9583b23 100644
--- a/main.go
+++ b/main.go
@@ -14,6 +14,23 @@ import (
 )
 
 func main() {
+	// this runs profiling server. To enable it, build with prof tag
+	//   $ go build -tags prof
+	//
+	// Then you can pass a port using MTG_PROF_PORT environment variable.
+	// Default is 6000
+	//   $ MTG_PROF_PORT=6000 mtg run config.toml
+	//
+	// It will run a webserver with profiling data on
+	// localhost:${MTG_PROF_PORT:-6000}.
+	//
+	// To collect PGO do following:
+	//   $ curl -o default.pgo 'http://localhost:6000/debug/pprof/profile?seconds=300'
+	//
+	// See also https://pkg.go.dev/net/http/pprof
+	//          https://go.dev/blog/pprof
+	runProfile()
+
 	cli := &cli.CLI{}
 	ctx := kong.Parse(cli, kong.Vars{
 		"version": getVersion(),
diff --git a/run_profile.go b/run_profile.go
new file mode 100644
index 0000000..06b7ab8
--- /dev/null
+++ b/run_profile.go
@@ -0,0 +1,7 @@
+//go:build !prof
+
+package main
+
+func runProfile() {
+
+}
diff --git a/run_profile_tag_prof.go b/run_profile_tag_prof.go
new file mode 100644
index 0000000..63ca2d8
--- /dev/null
+++ b/run_profile_tag_prof.go
@@ -0,0 +1,27 @@
+//go:build prof
+
+package main
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	_ "net/http/pprof" //nolint: gosec
+	"os"
+)
+
+const DefaultProfPort = "6000"
+
+func runProfile() {
+	port := os.Getenv("MTG_PROF_PORT")
+	if port == "" {
+		port = DefaultProfPort
+	}
+
+	listener, err := net.Listen("tcp", net.JoinHostPort("127.0.0.1", port))
+	if err != nil {
+		panic(err)
+	}
+
+	go http.Serve(listener, nil)
+}