diff --git a/libp2p.nimble b/libp2p.nimble
index a5483ac..513d834 100644
--- a/libp2p.nimble
+++ b/libp2p.nimble
@@ -27,7 +27,7 @@ const nimflags =
 
 proc runTest(filename: string, verify: bool = true, sign: bool = true,
              moreoptions: string = "") =
-  var excstr = "nim c --opt:speed -d:debug -d:libp2p_agents_metrics -d:libp2p_protobuf_metrics -d:libp2p_network_protocols_metrics "
+  var excstr = "nim c --opt:speed -d:debug -d:libp2p_agents_metrics -d:libp2p_protobuf_metrics -d:libp2p_network_protocols_metrics -d:libp2p_mplex_metrics "
   excstr.add(" " & getEnv("NIMFLAGS") & " ")
   excstr.add(" " & nimflags & " ")
   excstr.add(" -d:libp2p_pubsub_sign=" & $sign)
diff --git a/libp2p/muxers/mplex/lpchannel.nim b/libp2p/muxers/mplex/lpchannel.nim
index 224c6b4..46f5580 100644
--- a/libp2p/muxers/mplex/lpchannel.nim
+++ b/libp2p/muxers/mplex/lpchannel.nim
@@ -21,6 +21,12 @@ export connection
 logScope:
   topics = "libp2p mplexchannel"
 
+when defined(libp2p_mplex_metrics):
+  declareHistogram libp2p_mplex_qlen, "message queue length",
+    buckets = [0.0, 1.0, 2.0, 4.0, 8.0, 16.0, 32.0, 64.0, 128.0, 256.0, 512.0]
+  declareCounter libp2p_mplex_qlenclose, "closed because of max queuelen"
+  declareHistogram libp2p_mplex_qtime, "message queuing time"
+
 when defined(libp2p_network_protocols_metrics):
   declareCounter libp2p_protocols_bytes, "total sent or received bytes", ["protocol", "direction"]
 
@@ -187,6 +193,8 @@ proc prepareWrite(s: LPChannel, msg: seq[byte]): Future[void] {.async.} =
   if s.writes >= MaxWrites:
     debug "Closing connection, too many in-flight writes on channel",
       s, conn = s.conn, writes = s.writes
+    when defined(libp2p_mplex_metrics):
+        libp2p_mplex_qlenclose.inc()
     await s.reset()
     await s.conn.close()
     return
@@ -201,8 +209,14 @@ proc completeWrite(
   try:
     s.writes += 1
 
-    await fut
-    when defined(libp2p_network_protocols_metrics):
+    when defined(libp2p_mplex_metrics):
+      libp2p_mplex_qlen.observe(s.writes.int64 - 1)
+      libp2p_mplex_qtime.time:
+        await fut
+    else:
+      await fut
+
+    when defined(libp2p_network_protocol_metrics):
       if s.tag.len > 0:
         libp2p_protocols_bytes.inc(msgLen.int64, labelValues=[s.tag, "out"])
 
diff --git a/libp2p/protocols/pubsub/gossipsub.nim b/libp2p/protocols/pubsub/gossipsub.nim
index 8261ac5..8354247 100644
--- a/libp2p/protocols/pubsub/gossipsub.nim
+++ b/libp2p/protocols/pubsub/gossipsub.nim
@@ -38,6 +38,8 @@ logScope:
 declareCounter(libp2p_gossipsub_failed_publish, "number of failed publish")
 declareCounter(libp2p_gossipsub_invalid_topic_subscription, "number of invalid topic subscriptions that happened")
 declareCounter(libp2p_gossipsub_duplicate_during_validation, "number of duplicates received during message validation")
+declareCounter(libp2p_gossipsub_duplicate, "number of duplicates received")
+declareCounter(libp2p_gossipsub_received, "number of messages received (deduplicated)")
 
 proc init*(_: type[GossipSubParams]): GossipSubParams =
   GossipSubParams(
@@ -385,9 +387,13 @@ method rpcHandler*(g: GossipSub,
 
       g.validationSeen.withValue(msgIdSalted, seen): seen[].incl(peer)
 
+      libp2p_gossipsub_duplicate.inc()
+
       # onto the next message
       continue
 
+    libp2p_gossipsub_received.inc()
+
     # avoid processing messages we are not interested in
     if msg.topicIDs.allIt(it notin g.topics):
       debug "Dropping message of topic without subscription", msgId = shortLog(msgId), peer
diff --git a/libp2p/protocols/pubsub/gossipsub/behavior.nim b/libp2p/protocols/pubsub/gossipsub/behavior.nim
index eec6801..39418b3 100644
--- a/libp2p/protocols/pubsub/gossipsub/behavior.nim
+++ b/libp2p/protocols/pubsub/gossipsub/behavior.nim
@@ -25,6 +25,7 @@ declareGauge(libp2p_gossipsub_no_peers_topics, "number of topics in mesh with no
 declareGauge(libp2p_gossipsub_low_peers_topics, "number of topics in mesh with at least one but below dlow peers")
 declareGauge(libp2p_gossipsub_healthy_peers_topics, "number of topics in mesh with at least dlow peers (but below dhigh)")
 declareCounter(libp2p_gossipsub_above_dhigh_condition, "number of above dhigh pruning branches ran", labels = ["topic"])
+declareSummary(libp2p_gossipsub_mcache_hit, "ratio of successful IWANT message cache lookups")
 
 proc grafted*(g: GossipSub, p: PubSubPeer, topic: string) {.raises: [Defect].} =
   g.withPeerStats(p.peerId) do (stats: var PeerStats):
@@ -276,12 +277,15 @@ proc handleIWant*(g: GossipSub,
         trace "peer sent iwant", peer, messageID = mid
         let msg = g.mcache.get(mid)
         if msg.isSome:
+          libp2p_gossipsub_mcache_hit.observe(1)
           # avoid spam
           if peer.iWantBudget > 0:
             messages.add(msg.get())
             dec peer.iWantBudget
           else:
             break
+        else:
+          libp2p_gossipsub_mcache_hit.observe(0)
   return messages
 
 proc commitMetrics(metrics: var MeshMetrics) {.raises: [Defect].} =
diff --git a/tools/grafana/libp2p-metrics.json b/tools/grafana/libp2p-metrics.json
new file mode 100644
index 0000000..3c89460
--- /dev/null
+++ b/tools/grafana/libp2p-metrics.json
@@ -0,0 +1,1508 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": "-- Grafana --",
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "target": {
+          "limit": 100,
+          "matchAny": false,
+          "tags": [],
+          "type": "dashboard"
+        },
+        "type": "dashboard"
+      }
+    ]
+  },
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 0,
+  "id": 4,
+  "iteration": 1642596851125,
+  "links": [],
+  "liveNow": false,
+  "panels": [
+    {
+      "collapsed": false,
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 0
+      },
+      "id": 83,
+      "panels": [],
+      "title": "peer metrics",
+      "type": "row"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": true,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "links": [],
+          "mappings": [],
+          "min": 0,
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 14,
+        "x": 0,
+        "y": 1
+      },
+      "id": 51,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom"
+        },
+        "tooltip": {
+          "mode": "multi"
+        }
+      },
+      "pluginVersion": "8.1.6",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "expr": "libp2p_peers{instance=\"${instance}\"}",
+          "interval": "",
+          "legendFormat": "libp2p peers",
+          "refId": "A"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "expr": "libp2p_pubsub_peers{instance=\"${instance}\"}",
+          "interval": "",
+          "legendFormat": "libp2p pubsub peers",
+          "refId": "C"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "expr": "nbc_peers{instance=\"${instance}\"}",
+          "interval": "",
+          "legendFormat": "beacon_node peers",
+          "refId": "B"
+        }
+      ],
+      "title": "peers (${instance})",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [
+            {
+              "options": {
+                "match": "null",
+                "result": {
+                  "text": "N/A"
+                }
+              },
+              "type": "special"
+            }
+          ],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "none"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 2,
+        "w": 3,
+        "x": 14,
+        "y": 1
+      },
+      "id": 12,
+      "links": [],
+      "maxDataPoints": 100,
+      "options": {
+        "colorMode": "none",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "horizontal",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "text": {},
+        "textMode": "auto"
+      },
+      "pluginVersion": "8.3.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "nbc_peers{instance=\"${instance}\"}",
+          "interval": "",
+          "legendFormat": "",
+          "refId": "A"
+        }
+      ],
+      "title": "peers",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": true,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "links": [],
+          "mappings": [],
+          "min": 0,
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 14,
+        "x": 0,
+        "y": 6
+      },
+      "id": 16,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom"
+        },
+        "tooltip": {
+          "mode": "multi"
+        }
+      },
+      "pluginVersion": "8.1.6",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "expr": "libp2p_open_streams{instance=\"${instance}\"}",
+          "interval": "",
+          "legendFormat": "{{type}} ({{dir}})",
+          "refId": "A"
+        }
+      ],
+      "title": "open streams (${instance})",
+      "type": "timeseries"
+    },
+    {
+      "cards": {},
+      "color": {
+        "cardColor": "#b4ff00",
+        "colorScale": "sqrt",
+        "colorScheme": "interpolateSpectral",
+        "exponent": 0.5,
+        "min": 0,
+        "mode": "opacity"
+      },
+      "dataFormat": "tsbuckets",
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "gridPos": {
+        "h": 6,
+        "w": 14,
+        "x": 0,
+        "y": 11
+      },
+      "heatmap": {},
+      "hideZeroBuckets": false,
+      "highlightCards": true,
+      "id": 76,
+      "interval": "",
+      "legend": {
+        "show": false
+      },
+      "reverseYBuckets": false,
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "rate(libp2p_mplex_qtime_bucket{instance=\"${instance}\"}[$__rate_interval])",
+          "format": "heatmap",
+          "instant": false,
+          "interval": "",
+          "intervalFactor": 1,
+          "legendFormat": "{{le}}",
+          "refId": "A"
+        }
+      ],
+      "title": "message tx queuing delay (s) (${instance})",
+      "tooltip": {
+        "show": true,
+        "showHistogram": false
+      },
+      "type": "heatmap",
+      "xAxis": {
+        "show": true
+      },
+      "yAxis": {
+        "format": "short",
+        "logBase": 1,
+        "show": true
+      },
+      "yBucketBound": "auto"
+    },
+    {
+      "cards": {},
+      "color": {
+        "cardColor": "#b4ff00",
+        "colorScale": "sqrt",
+        "colorScheme": "interpolateSpectral",
+        "exponent": 0.5,
+        "min": 0,
+        "mode": "opacity"
+      },
+      "dataFormat": "tsbuckets",
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "",
+      "gridPos": {
+        "h": 6,
+        "w": 14,
+        "x": 0,
+        "y": 17
+      },
+      "heatmap": {},
+      "hideZeroBuckets": false,
+      "highlightCards": true,
+      "id": 72,
+      "interval": "",
+      "legend": {
+        "show": false
+      },
+      "reverseYBuckets": false,
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "rate(libp2p_mplex_qlen_bucket{instance=\"${instance}\"}[$__rate_interval])",
+          "format": "heatmap",
+          "instant": false,
+          "interval": "",
+          "intervalFactor": 1,
+          "legendFormat": "{{le}}",
+          "refId": "A"
+        }
+      ],
+      "title": "message tx queue length (msgs) (${instance})",
+      "tooltip": {
+        "show": true,
+        "showHistogram": false
+      },
+      "type": "heatmap",
+      "xAxis": {
+        "show": true
+      },
+      "yAxis": {
+        "format": "short",
+        "logBase": 1,
+        "show": true
+      },
+      "yBucketBound": "auto"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": true,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "links": [],
+          "mappings": [],
+          "min": 0,
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 14,
+        "x": 0,
+        "y": 23
+      },
+      "id": 86,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom"
+        },
+        "tooltip": {
+          "mode": "multi"
+        }
+      },
+      "pluginVersion": "8.1.6",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "rate(libp2p_mplex_qlenclose_total{instance=\"${instance}\"}[$__rate_interval])",
+          "interval": "",
+          "legendFormat": "reason: max queue length reached",
+          "refId": "A"
+        }
+      ],
+      "title": "Peer connections closed / second (${instance})",
+      "type": "timeseries"
+    },
+    {
+      "collapsed": false,
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 28
+      },
+      "id": 68,
+      "panels": [],
+      "title": "Gossipsub",
+      "type": "row"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 0,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "auto",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          }
+        },
+        "overrides": [
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "no_peers"
+            },
+            "properties": [
+              {
+                "id": "color",
+                "value": {
+                  "fixedColor": "dark-red",
+                  "mode": "fixed"
+                }
+              }
+            ]
+          }
+        ]
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 14,
+        "x": 0,
+        "y": 29
+      },
+      "id": 80,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom"
+        },
+        "tooltip": {
+          "mode": "multi"
+        }
+      },
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "libp2p_gossipsub_healthy_peers_topics{instance=\"${instance}\"}",
+          "interval": "",
+          "legendFormat": "healthy",
+          "refId": "A"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "libp2p_gossipsub_low_peers_topics{instance=\"${instance}\"}",
+          "hide": false,
+          "interval": "",
+          "legendFormat": "low",
+          "refId": "C"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "exemplar": true,
+          "expr": "libp2p_gossipsub_no_peers_topics{instance=\"${instance}\"}",
+          "hide": false,
+          "interval": "",
+          "legendFormat": "no_peers",
+          "refId": "B"
+        }
+      ],
+      "title": "Mesh health",
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+          "legendFormat": "",
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+  "style": "dark",
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+        "type": "query",
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+}
\ No newline at end of file