Monitor: 1-second CPU/mem/net updates via fast endpoint

Split slow cached monitor endpoint from the live stats. monitor_fast.php
reads /proc/stat, /proc/meminfo, ZFS arcstats, and /proc/net/dev directly
— no cache wrapper, 87ms response. Docker/vm/swap pulled from last full
cache so mem card stays complete. Full monitor poll stays at 2s for
everything else (GPU, containers, storage, etc).

Plugin/unraid/api/monitor_fast.php

@@ -0,0 +1,48 @@
+<?php
+header('Content-Type: application/json');
+require_once dirname(__DIR__) . '/include/config.php';
+require_once dirname(__DIR__) . '/include/common.php';
+
+// Pull slow fields (docker/vm/top_procs/swap) from last full cache — stale is fine,
+// these don't change on a per-second basis. 600s window so the card stays populated
+// even if the full cache writer is temporarily behind.
+$_full      = vv_cache_read('monitor', 600);
+$_dockerKb  = $_full['mem']['docker_kb']      ?? 0;
+$_vmKb      = $_full['mem']['vm_kb']          ?? 0;
+$_topProcs  = $_full['mem']['top_procs']      ?? [];
+$_swapTotal = $_full['mem']['swap_total_kb']  ?? 0;
+$_swapUsed  = $_full['mem']['swap_used_kb']   ?? 0;
+
+// Fast memory: /proc/meminfo + ZFS ARC (no docker stats, no GQL)
+$_memRaw = [];
+foreach (file('/proc/meminfo') ?: [] as $_l) {
+    if (preg_match('/^(\w+):\s+(\d+)/', $_l, $_m)) $_memRaw[$_m[1]] = (int)$_m[2];
+}
+$_totalKb = $_memRaw['MemTotal']    ?? 0;
+$_freeKb  = $_memRaw['MemAvailable'] ?? 0;
+$_arcKb   = 0;
+foreach (@file('/proc/spl/kstat/zfs/arcstats') ?: [] as $_l) {
+    if (preg_match('/^size\s+\d+\s+(\d+)/', $_l, $_m)) { $_arcKb = (int)($_m[1] / 1024); break; }
+}
+if (!$_swapTotal) {
+    $_swapTotal = $_memRaw['SwapTotal'] ?? 0;
+    $_swapUsed  = max(0, ($_memRaw['SwapTotal'] ?? 0) - ($_memRaw['SwapFree'] ?? 0));
+}
+
+echo json_encode([
+    'cpu' => vv_cpu_per_core(),
+    'mem' => [
+        'total_kb'      => $_totalKb,
+        'free_kb'       => $_freeKb,
+        'used_kb'       => max(0, $_totalKb - $_freeKb),
+        'arc_kb'        => $_arcKb,
+        'docker_kb'     => $_dockerKb,
+        'vm_kb'         => $_vmKb,
+        'system_kb'     => max(0, $_totalKb - $_freeKb - $_arcKb - $_dockerKb - $_vmKb),
+        'swap_total_kb' => $_swapTotal,
+        'swap_used_kb'  => $_swapUsed,
+        'top_procs'     => $_topProcs,
+    ],
+    'net' => vv_network_stats(),
+    'ts'  => time(),
+]);

Plugin/unraid/pages/monitor.php

@@ -898,62 +898,7 @@ function vvPollMonitor() {
         }
       })();
 
-      // ── CPU ─────────────────────────────────────────────────────────────────
+      // ── CPU title (core count + temp — watchdog data only comes from full poll) ──
-      const cpu = d.cpu ?? {};
-      document.getElementById('vv-cpu-body').innerHTML = vvRenderCpu(cpu);
-
-      vvCpuHistory.push(cpu.overall ?? 0);
-      if (vvCpuHistory.length > VV_HIST_MAX) vvCpuHistory.shift();
-      vvDrawChart(document.getElementById('vv-cpu-canvas'), vvCpuHistory, '#4caf50', 'rgba(76,175,80,0.18)', true);
-
-      // ── Memory ──────────────────────────────────────────────────────────────
-      const mem = d.mem ?? {};
-      document.getElementById('vv-memory-body').innerHTML = vvRenderMemory(mem);
-
-      // ── Network ─────────────────────────────────────────────────────────────
-      const net = d.net ?? {};
-      if (net.available) {
-        const rx = net.rx_bps ?? 0;
-        const tx = net.tx_bps ?? 0;
-        const linkMbps  = net.speed_mbps ?? 0;
-        const linkLabel = linkMbps >= 1000 ? (linkMbps / 1000) + ' Gb/s' : linkMbps ? linkMbps + ' Mb/s' : '—';
-        const linkBps   = linkMbps * 1e6;
-
-        vvNetRxHistory.push(rx);
-        vvNetTxHistory.push(tx);
-        if (vvNetRxHistory.length > VV_HIST_MAX) vvNetRxHistory.shift();
-        if (vvNetTxHistory.length > VV_HIST_MAX) vvNetTxHistory.shift();
-
-        const maxSeen = Math.max(...vvNetRxHistory, ...vvNetTxHistory, 1);
-        const maxBps  = maxSeen * 1.25; // auto-scale with 25% headroom
-        const peakRx  = Math.max(...vvNetRxHistory, 0);  // window peak (last 2 min)
-        const peakTx  = Math.max(...vvNetTxHistory, 0);
-
-        const ipRows = [
-          net.local_ip ? `<div><span style="color:#555;font-size:9px;">LAN&nbsp;&nbsp;</span>${net.local_ip}</div>` : '',
-          net.ext_ip   ? `<div><span style="color:#555;font-size:9px;">EXT&nbsp;&nbsp;</span>${net.ext_ip}</div>`   : '',
-          net.ts_ip    ? `<div><span style="color:#555;font-size:9px;">TS&nbsp;&nbsp;&nbsp;</span>${net.ts_ip}</div>`  : '',
-        ].filter(Boolean).join('');
-
-        document.getElementById('vv-network-body').innerHTML =
-          `<div style="display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px;">
-             <div>
-               <div style="font-size:12px;color:#888;margin-bottom:4px;">${net.iface} &nbsp;·&nbsp; ${linkLabel}</div>
-               <div style="display:flex;gap:16px;font-size:13px;font-weight:600;">
-                 <span><span style="color:#4caf50;font-size:9px;margin-right:4px;">━ IN (RX)</span><span style="color:#4caf50;">${vvFmtBps(rx)}</span><span style="color:#444;font-size:9px;font-weight:400;margin-left:4px;">peak ${vvFmtBps(peakRx)}</span></span>
-                 <span><span style="color:#ff9800;font-size:9px;margin-right:4px;">━ OUT (TX)</span><span style="color:#ff9800;">${vvFmtBps(tx)}</span><span style="color:#444;font-size:9px;font-weight:400;margin-left:4px;">peak ${vvFmtBps(peakTx)}</span></span>
-               </div>
-             </div>
-             <div style="text-align:right;font-size:11px;color:#aaa;line-height:1.6;">${ipRows}</div>
-           </div>
-           <canvas id="vv-net-canvas" style="width:100%;height:110px;display:block;"></canvas>`;
-
-        vvDrawNetChart(document.getElementById('vv-net-canvas'), vvNetRxHistory, vvNetTxHistory, maxBps);
-      } else {
-        document.getElementById('vv-network-body').innerHTML = '<p style="color:#555;font-style:italic">No network interface detected</p>';
-      }
-
-      // ── CPU title (core count + temp to its right) ────────────────────────────
       const _cpuTitleEl = document.getElementById('vv-cpu-title');
       if (_cpuTitleEl) {
         const _cpuTemp  = d.watchdog?.stability?.cpu_temp ?? null;
@@ -1634,6 +1579,69 @@ function vvPollMonitor() {
 vvPollMonitor();
 setInterval(vvPollMonitor, 2000);
 
+// ── Fast poll: CPU, memory, network — 1-second live updates ──────────────────
+function vvPollFast() {
+  fetch('/plugins/varaverk/api/monitor_fast.php')
+    .then(r => r.json())
+    .then(d => {
+      // CPU
+      const cpu = d.cpu ?? {};
+      document.getElementById('vv-cpu-body').innerHTML = vvRenderCpu(cpu);
+      vvCpuHistory.push(cpu.overall ?? 0);
+      if (vvCpuHistory.length > VV_HIST_MAX) vvCpuHistory.shift();
+      vvDrawChart(document.getElementById('vv-cpu-canvas'), vvCpuHistory, '#4caf50', 'rgba(76,175,80,0.18)', true);
+
+      // Memory
+      document.getElementById('vv-memory-body').innerHTML = vvRenderMemory(d.mem ?? {});
+
+      // Network
+      const net = d.net ?? {};
+      if (net.available) {
+        const rx = net.rx_bps ?? 0;
+        const tx = net.tx_bps ?? 0;
+        const linkMbps  = net.speed_mbps ?? 0;
+        const linkLabel = linkMbps >= 1000 ? (linkMbps / 1000) + ' Gb/s' : linkMbps ? linkMbps + ' Mb/s' : '—';
+
+        vvNetRxHistory.push(rx);
+        vvNetTxHistory.push(tx);
+        if (vvNetRxHistory.length > VV_HIST_MAX) vvNetRxHistory.shift();
+        if (vvNetTxHistory.length > VV_HIST_MAX) vvNetTxHistory.shift();
+
+        const maxSeen = Math.max(...vvNetRxHistory, ...vvNetTxHistory, 1);
+        const maxBps  = maxSeen * 1.25;
+        const peakRx  = Math.max(...vvNetRxHistory, 0);
+        const peakTx  = Math.max(...vvNetTxHistory, 0);
+
+        const ipRows = [
+          net.local_ip ? `<div><span style="color:#555;font-size:9px;">LAN&nbsp;&nbsp;</span>${net.local_ip}</div>` : '',
+          net.ext_ip   ? `<div><span style="color:#555;font-size:9px;">EXT&nbsp;&nbsp;</span>${net.ext_ip}</div>`   : '',
+          net.ts_ip    ? `<div><span style="color:#555;font-size:9px;">TS&nbsp;&nbsp;&nbsp;</span>${net.ts_ip}</div>`  : '',
+        ].filter(Boolean).join('');
+
+        document.getElementById('vv-network-body').innerHTML =
+          `<div style="display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px;">
+             <div>
+               <div style="font-size:12px;color:#888;margin-bottom:4px;">${net.iface} &nbsp;·&nbsp; ${linkLabel}</div>
+               <div style="display:flex;gap:16px;font-size:13px;font-weight:600;">
+                 <span><span style="color:#4caf50;font-size:9px;margin-right:4px;">━ IN (RX)</span><span style="color:#4caf50;">${vvFmtBps(rx)}</span><span style="color:#444;font-size:9px;font-weight:400;margin-left:4px;">peak ${vvFmtBps(peakRx)}</span></span>
+                 <span><span style="color:#ff9800;font-size:9px;margin-right:4px;">━ OUT (TX)</span><span style="color:#ff9800;">${vvFmtBps(tx)}</span><span style="color:#444;font-size:9px;font-weight:400;margin-left:4px;">peak ${vvFmtBps(peakTx)}</span></span>
+               </div>
+             </div>
+             <div style="text-align:right;font-size:11px;color:#aaa;line-height:1.6;">${ipRows}</div>
+           </div>
+           <canvas id="vv-net-canvas" style="width:100%;height:110px;display:block;"></canvas>`;
+
+        vvDrawNetChart(document.getElementById('vv-net-canvas'), vvNetRxHistory, vvNetTxHistory, maxBps);
+      } else {
+        document.getElementById('vv-network-body').innerHTML = '<p style="color:#555;font-style:italic">No network interface detected</p>';
+      }
+    })
+    .catch(() => {});
+}
+
+vvPollFast();
+setInterval(vvPollFast, 1000);
+
 // Pin pools card width to CPU card width across rows
 function vvSyncCardWidths() {
   const cpu   = document.getElementById('vv-cpu');