Function BenchmarkMapSessionDelta

control/controlclient/map_test.go:1559–1611

(b *testing.B)

}

func BenchmarkMapSessionDelta(b *testing.B) {
	for _, size := range []int{10, 100, 1_000, 10_000} {
		b.Run(fmt.Sprintf("size_%d", size), func(b *testing.B) {
			ctx := context.Background()
			nu := &countingNetmapUpdater{}
			ms := newTestMapSession(b, nu)
			// Disable log output for benchmarks to avoid races
			ms.logf = func(string, ...any) {}
			res := &tailcfg.MapResponse{
				Node: &tailcfg.Node{
					ID:   1,
					Name: "foo.bar.ts.net.",
				},
			}
			for i := range size {
				res.Peers = append(res.Peers, &tailcfg.Node{
					ID:         tailcfg.NodeID(i + 2),
					Name:       fmt.Sprintf("peer%d.bar.ts.net.", i),
					HomeDERP:   10,
					Addresses:  []netip.Prefix{netip.MustParsePrefix("100.100.2.3/32"), netip.MustParsePrefix("fd7a:115c:a1e0::123/128")},
					AllowedIPs: []netip.Prefix{netip.MustParsePrefix("100.100.2.3/32"), netip.MustParsePrefix("fd7a:115c:a1e0::123/128")},
					Endpoints:  eps("192.168.1.2:345", "192.168.1.3:678"),
					Hostinfo: (&tailcfg.Hostinfo{
						OS:       "fooOS",
						Hostname: "MyHostname",
						Services: []tailcfg.Service{
							{Proto: "peerapi4", Port: 1234},
							{Proto: "peerapi6", Port: 1234},
							{Proto: "peerapi-dns-proxy", Port: 1},
						},
					}).View(),
					LastSeen: new(time.Unix(int64(i), 0)),
				})
			}
			ms.HandleNonKeepAliveMapResponse(ctx, res)

			b.ResetTimer()
			b.ReportAllocs()

			// Now for the core of the benchmark loop, just toggle
			// a single node's online status.
			for i := range b.N {
				if err := ms.HandleNonKeepAliveMapResponse(ctx, &tailcfg.MapResponse{
					OnlineChange: map[tailcfg.NodeID]bool{
						2: i%2 == 0,
					},
				}); err != nil {
					b.Fatal(err)
				}
			}
		})
	}
}

// TestNetmapDisplayMessage checks that the various diff operations
// (add/update/delete/clear) for [tailcfg.DisplayMessage] in a