diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 014d7af7a1..8b8503ddfe 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -529,12 +529,16 @@ jobs:
       - name: Run functional test
         if: ${{ inputs.run_single_functional_test != true || (inputs.run_single_functional_test == true && contains(fromJSON(needs.set-up-single-test.outputs.dbs), env.PERSISTENCE_DRIVER)) }}
         timeout-minutes: ${{ fromJSON(needs.set-up-single-test.outputs.github_timeout) }} # make sure this is larger than the test timeout in the Makefile
-        run: make functional-test-coverage
+        run: ./develop/github/monitor_test.sh make functional-test-coverage
         env:
           TEST_ARGS: ${{ needs.set-up-single-test.outputs.single_test_args }}
           TEMPORAL_TEST_OTEL_OUTPUT: ${{ github.workspace }}/.testoutput
           TEMPORAL_OTEL_DEBUG: true
 
+      - name: Print memory snapshot
+        if: always()
+        run: if [ -f /tmp/memory_snapshot.txt ]; then cat /tmp/memory_snapshot.txt; fi
+
       - name: Generate crash report
         if: failure()
         run:
@@ -609,7 +613,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        name: [cass_es, cass_es8, cass_os2, cass_os3, mysql8, postgres12, postgres12_pgx]
+        name:
+          - cass_es
+          - cass_es8
+          - cass_os2
+          - cass_os3
+          - mysql8
+          - postgres12
+          - postgres12_pgx
         include:
           - name: cass_es
             persistence_type: nosql
@@ -693,11 +704,15 @@ jobs:
 
       - name: Run functional test xdc
         timeout-minutes: 35 # update this to TEST_TIMEOUT+5 if you update the Makefile
-        run: make functional-test-xdc-coverage
+        run: ./develop/github/monitor_test.sh make functional-test-xdc-coverage
         env:
           TEMPORAL_TEST_OTEL_OUTPUT: ${{ github.workspace }}/.testoutput
           TEMPORAL_OTEL_DEBUG: true
 
+      - name: Print memory snapshot
+        if: always()
+        run: if [ -f /tmp/memory_snapshot.txt ]; then cat /tmp/memory_snapshot.txt; fi
+
       - name: Generate crash report
         if: failure()
         run:
@@ -859,11 +874,15 @@ jobs:
 
       - name: Run functional test ndc
         timeout-minutes: 15
-        run: make functional-test-ndc-coverage
+        run: ./develop/github/monitor_test.sh make functional-test-ndc-coverage
         env:
           TEMPORAL_TEST_OTEL_OUTPUT: ${{ github.workspace }}/.testoutput
           TEMPORAL_OTEL_DEBUG: true
 
+      - name: Print memory snapshot
+        if: always()
+        run: if [ -f /tmp/memory_snapshot.txt ]; then cat /tmp/memory_snapshot.txt; fi
+
       - name: Generate crash report
         if: failure()
         run:
@@ -963,7 +982,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: 'go.mod'
+          go-version-file: "go.mod"
           cache: true
 
       - name: Send Slack notification
diff --git a/develop/github/memory_monitor.sh b/develop/github/memory_monitor.sh
new file mode 100755
index 0000000000..0673d7953c
--- /dev/null
+++ b/develop/github/memory_monitor.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+#
+# Memory Monitor
+#
+# Takes periodic memory snapshots. Captures system memory stats, top processes,
+# and for Go processes, heap profiles via pprof.
+#
+# Usage:
+#   ./memory_monitor.sh <snapshot-file>
+#
+set -euo pipefail
+
+if [[ $# -lt 1 ]]; then
+  echo "Usage: $0 <snapshot-file>" >&2
+  exit 1
+fi
+
+SNAPSHOT_FILE="$1"
+HISTORY_FILE="/tmp/memory_history.txt"
+
+# Clear history on start
+: > "$HISTORY_FILE"
+
+write_snapshot() {
+  local memtotal_kb memavail_kb memused_kb memused_mb pct
+  memtotal_kb="$(awk '/MemTotal/ {print $2}' /proc/meminfo)"
+  memavail_kb="$(awk '/MemAvailable/ {print $2}' /proc/meminfo)"
+  memused_kb=$(( memtotal_kb - memavail_kb ))
+  memused_mb=$(( memused_kb / 1024 ))
+  pct=$(( memused_kb * 100 / memtotal_kb ))
+
+  local goroutines="?"
+  if curl -s --max-time 5 'http://localhost:7000/debug/pprof/goroutine?debug=1' -o /tmp/goroutine.out 2>/dev/null; then
+    goroutines="$(head -1 /tmp/goroutine.out | grep -o '[0-9]*' || echo '?')"
+  fi
+
+  # Get processes with >=1% memory, format as "name (MB)"
+  local top_procs
+  top_procs="$(ps -eo %mem,rss,comm --sort=-%mem | awk 'NR>1 && $1>=1.0 {printf "%s (%dMB), ", $3, $2/1024}' | sed 's/, $//')"
+
+  local timestamp
+  timestamp="$(date '+%H:%M:%S')"
+
+  # Append to history
+  echo "$timestamp $pct $memused_mb $goroutines $top_procs" >> "$HISTORY_FILE"
+
+  {
+    echo "Memory snapshot at $(date '+%Y-%m-%d %H:%M:%S')"
+    echo ""
+    echo "Time      Used(%)  Used(MB)  Goroutines  Top Processes"
+    echo "---------------------------------------------------------------"
+    while read -r t p mb g procs; do
+      printf "%-10s %3s%%     %5s   %7s     %s\n" "$t" "$p" "$mb" "$g" "$procs"
+    done < "$HISTORY_FILE"
+    echo ""
+    echo "--- Top Processes ---"
+    ps -eo pid,%mem,rss:10,comm --sort=-%mem | head -20
+    echo ""
+    echo "--- Memory Summary ---"
+    free -m
+    echo ""
+    echo "--- Go Heap Profile ---"
+    if curl -s --max-time 10 "http://localhost:7000/debug/pprof/heap" -o /tmp/heap.out 2>/dev/null; then
+      go tool pprof -top -inuse_space /tmp/heap.out 2>/dev/null | head -60 || true
+      echo ""
+      go tool pprof -top -alloc_space /tmp/heap.out 2>/dev/null | head -60 || true
+    else
+      echo "(pprof endpoint not available)"
+    fi
+  } > "$SNAPSHOT_FILE"
+}
+
+# Take snapshots every 30s until killed
+while true; do
+  write_snapshot
+  sleep 30
+done
diff --git a/develop/github/monitor_test.sh b/develop/github/monitor_test.sh
new file mode 100755
index 0000000000..6c0f773b89
--- /dev/null
+++ b/develop/github/monitor_test.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+#
+# Monitor Test
+#
+# Runs the given command with background monitoring.
+#
+# Usage:
+#   ./monitor_test.sh <command> [args...]
+#
+# Example:
+#   ./monitor_test.sh make functional-test-coverage
+#
+set -euo pipefail
+
+if [[ $# -lt 1 ]]; then
+  echo "Usage: $0 <command> [args...]" >&2
+  exit 1
+fi
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Start monitor
+"$SCRIPT_DIR/memory_monitor.sh" /tmp/memory_snapshot.txt &
+MONITOR_PID=$!
+trap 'kill "$MONITOR_PID" 2>/dev/null' EXIT
+
+# Run command
+"$@"