diff --git a/ui/metrics/metrics_proto/metrics.pb.go b/ui/metrics/metrics_proto/metrics.pb.go
index 05efe13..95ef4da 100644
--- a/ui/metrics/metrics_proto/metrics.pb.go
+++ b/ui/metrics/metrics_proto/metrics.pb.go
@@ -197,12 +197,14 @@
 	// The metrics for calling Ninja.
 	NinjaRuns []*PerfInfo `protobuf:"bytes,20,rep,name=ninja_runs,json=ninjaRuns" json:"ninja_runs,omitempty"`
 	// The metrics for the whole build
-	Total                *PerfInfo          `protobuf:"bytes,21,opt,name=total" json:"total,omitempty"`
-	SoongBuildMetrics    *SoongBuildMetrics `protobuf:"bytes,22,opt,name=soong_build_metrics,json=soongBuildMetrics" json:"soong_build_metrics,omitempty"`
-	BuildConfig          *BuildConfig       `protobuf:"bytes,23,opt,name=build_config,json=buildConfig" json:"build_config,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}           `json:"-"`
-	XXX_unrecognized     []byte             `json:"-"`
-	XXX_sizecache        int32              `json:"-"`
+	Total             *PerfInfo          `protobuf:"bytes,21,opt,name=total" json:"total,omitempty"`
+	SoongBuildMetrics *SoongBuildMetrics `protobuf:"bytes,22,opt,name=soong_build_metrics,json=soongBuildMetrics" json:"soong_build_metrics,omitempty"`
+	BuildConfig       *BuildConfig       `protobuf:"bytes,23,opt,name=build_config,json=buildConfig" json:"build_config,omitempty"`
+	// The hostname of the machine
+	Hostname             *string  `protobuf:"bytes,24,opt,name=hostname" json:"hostname,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
 func (m *MetricsBase) Reset()         { *m = MetricsBase{} }
@@ -396,6 +398,13 @@
 	return nil
 }
 
+func (m *MetricsBase) GetHostname() string {
+	if m != nil && m.Hostname != nil {
+		return *m.Hostname
+	}
+	return ""
+}
+
 type BuildConfig struct {
 	UseGoma              *bool    `protobuf:"varint,1,opt,name=use_goma,json=useGoma" json:"use_goma,omitempty"`
 	UseRbe               *bool    `protobuf:"varint,2,opt,name=use_rbe,json=useRbe" json:"use_rbe,omitempty"`
@@ -772,70 +781,71 @@
 }
 
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+	0x9e, 0x66, 0xd2, 0xe6, 0x8a, 0x87, 0x57, 0x22, 0x65, 0x38, 0x8f, 0x9b, 0xb4, 0x91, 0x2b, 0x7e,
+	0x2c, 0x52, 0x66, 0x1a, 0xd3, 0x40, 0x72, 0xc8, 0x71, 0x06, 0x37, 0xe9, 0x52, 0xae, 0x38, 0x1d,
+	0x72, 0xf2, 0x0d, 0xb4, 0x47, 0x42, 0x46, 0x3c, 0x9c, 0x2a, 0x6b, 0x88, 0x2f, 0x63, 0x74, 0x60,
+	0xe5, 0xdd, 0xdf, 0x1d, 0x68, 0x96, 0xb7, 0x44, 0x08, 0xd4, 0x63, 0xae, 0x22, 0xdc, 0xc2, 0xa5,
+	0xf8, 0xdb, 0xc4, 0xb0, 0x22, 0x76, 0xc0, 0xe3, 0x6f, 0xb2, 0x09, 0xa0, 0x34, 0x93, 0x1a, 0xbf,
+	0x12, 0x68, 0x5b, 0xa7, 0x2e, 0x46, 0xcc, 0xc7, 0x81, 0x3c, 0x01, 0x57, 0x72, 0x36, 0xb6, 0x68,
+	0x1d, 0xd1, 0xa6, 0x09, 0x20, 0xb8, 0x09, 0x90, 0xf2, 0x54, 0xc8, 0x5b, 0x93, 0x17, 0x0e, 0xeb,
+	0x3a, 0x75, 0x6d, 0x64, 0xa0, 0x78, 0xf7, 0x2f, 0x07, 0xda, 0xa7, 0x22, 0xce, 0xc7, 0xfc, 0xe2,
+	0x76, 0xc2, 0x31, 0xab, 0x5f, 0xcb, 0xcb, 0x55, 0xb7, 0x4a, 0xf3, 0x14, 0xb3, 0x6b, 0xef, 0xbc,
+	0x98, 0x3f, 0x85, 0xee, 0x48, 0xed, 0x5d, 0x9f, 0xa3, 0xac, 0x32, 0x8f, 0x86, 0xb3, 0x28, 0xf9,
+	0x1a, 0xbc, 0x14, 0x35, 0xa1, 0xbe, 0x9d, 0x94, 0xa7, 0x84, 0x74, 0x6a, 0x63, 0xca, 0x98, 0xe5,
+	0x69, 0x28, 0x46, 0xa1, 0x0d, 0x2a, 0x3c, 0x6f, 0x8b, 0x2e, 0x67, 0x79, 0xda, 0x1f, 0xd9, 0xfd,
+	0x54, 0xf7, 0x45, 0x71, 0x5f, 0x85, 0xeb, 0x9d, 0x4b, 0x77, 0x61, 0xf1, 0xbc, 0xdf, 0x3f, 0x33,
+	0xdd, 0xd1, 0x84, 0xfa, 0xe9, 0xfe, 0xc9, 0x91, 0xbf, 0xd0, 0x1d, 0xc3, 0xe3, 0x9e, 0x4c, 0x74,
+	0x12, 0xb1, 0xf1, 0x40, 0x71, 0xf9, 0x93, 0xc8, 0x65, 0xc6, 0x6f, 0xcb, 0x7e, 0x2e, 0x8b, 0xee,
+	0x54, 0x8a, 0xbe, 0x07, 0x8d, 0xf2, 0xbd, 0x2c, 0xfc, 0x4f, 0x7b, 0x57, 0xe6, 0x30, 0x2d, 0x05,
+	0xdd, 0x21, 0x3c, 0x99, 0xb3, 0x9b, 0x9a, 0x3d, 0x9f, 0x7a, 0x94, 0x7f, 0x50, 0x81, 0x83, 0x33,
+	0x60, 0x7e, 0x65, 0xff, 0x3b, 0x5b, 0x8a, 0xe2, 0xee, 0x9f, 0x0e, 0xac, 0xfe, 0xeb, 0xb1, 0x92,
+	0x00, 0x1a, 0x65, 0xdd, 0x1c, 0xac, 0x5b, 0xb9, 0x34, 0xcf, 0xad, 0xf8, 0x9a, 0xd9, 0x03, 0xb5,
+	0xe8, 0x74, 0x4d, 0xbe, 0x85, 0x55, 0x1c, 0x18, 0x21, 0x1b, 0x8f, 0x45, 0x14, 0x46, 0x22, 0xcf,
+	0x74, 0xd1, 0x67, 0x2b, 0x08, 0xec, 0x9b, 0x78, 0xcf, 0x84, 0xc9, 0x16, 0xf8, 0x55, 0xae, 0x4a,
+	0x3e, 0x95, 0x4d, 0xd7, 0x9e, 0x51, 0xcf, 0x93, 0x4f, 0xdc, 0x7c, 0x3e, 0x52, 0x76, 0x13, 0x5e,
+	0x73, 0x36, 0xb1, 0x34, 0xdb, 0x7d, 0x5e, 0xca, 0x6e, 0x7e, 0xe4, 0x6c, 0x62, 0x38, 0x07, 0x0f,
+	0x7f, 0x29, 0x26, 0x54, 0x71, 0xee, 0x10, 0xff, 0x41, 0xfd, 0x1d, 0x00, 0x00, 0xff, 0xff, 0xb8,
+	0x9e, 0xa1, 0xd5, 0x51, 0x09, 0x00, 0x00,
 }
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index 4d6118b..4e8e12b 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -96,6 +96,9 @@
   optional SoongBuildMetrics soong_build_metrics = 22;
 
   optional BuildConfig build_config = 23;
+
+  // The hostname of the machine.
+  optional string hostname = 24;
 }
 
 message BuildConfig {