Performance and tooling related backports

Cargo.toml

@@ -157,6 +157,14 @@ num-format = "0.4.4"
 num-traits = "0.2.18"
 octocrab = "0.42.1"
 oneshot = "0.1.6"
+opentelemetry = { version = "0.30.0", features = ["trace"] }
+opentelemetry-http = "0.30.0"
+opentelemetry-otlp = { version = "0.30.0", features = [
+    "grpc-tonic",
+    "trace",
+    "tls-roots",
+] }
+opentelemetry_sdk = { version = "0.30.0", features = ["trace", "rt-tokio"] }
 papaya = "0.1.5"
 pathdiff = "0.2.1"
 port-selector = "0.1.6"
@@ -250,6 +258,7 @@ tonic-web-wasm-client = "0.6.0"
 tower = "0.4.13"
 tower-http = "0.6.6"
 tracing = { version = "0.1.40", features = ["release_max_level_debug"] }
+tracing-opentelemetry = "0.31.0"
 tracing-subscriber = { version = "0.3.18", default-features = false, features = [
     "env-filter",
 ] }

docker/Dockerfile

@@ -25,7 +25,7 @@ ARG binaries=
 ARG copy=${binaries:+_copy}
 ARG build_flag=--release
 ARG build_folder=release
-ARG build_features=scylladb,metrics,memory-profiling
+ARG build_features=scylladb,metrics,memory-profiling,tempo
 ARG rustflags="-C force-frame-pointers=yes"
 
 FROM rust:1.74-slim-bookworm AS builder

kubernetes/linera-validator/Chart.lock

@@ -5,5 +5,8 @@ dependencies:
 - name: loki-stack
   repository: https://grafana.github.io/helm-charts
   version: 2.8.9
-digest: sha256:da3a8808fb9479bdd183b307e70d7855794739cafc1796047bde8febc78d539c
-generated: "2023-11-30T17:19:14.544457977Z"
+- name: pyroscope
+  repository: https://grafana.github.io/helm-charts
+  version: 1.14.2
+digest: sha256:7fe611b57ddb6d72aa31bac87568fdb8e531e988e2ce4067b931d3026332f027
+generated: "2025-09-01T16:56:59.19795-03:00"

kubernetes/linera-validator/Chart.yaml

@@ -32,3 +32,7 @@ dependencies:
   - name: loki-stack
     version: "2.8.9"
     repository: "https://grafana.github.io/helm-charts"
+
+  - name: pyroscope
+    version: "1.14.2"
+    repository: "https://grafana.github.io/helm-charts"