diff --git a/public/js/app.js b/public/js/app.js
index ea5f18c..708bbba 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -976,6 +976,8 @@
         'seattle': [-122.3321, 47.6062],
         'us chicago': [-87.6298, 41.8781],
         'chicago': [-87.6298, 41.8781],
+        'us houston': [-95.3698, 29.7604],
+        'houston': [-95.3698, 29.7604],
         'new york': [-74.0060, 40.7128],
         'new york corp': [-74.0060, 40.7128],
         'san francisco': [-122.4194, 37.7749],
@@ -985,8 +987,8 @@
         'tokyo': [139.6917, 35.6895],
         'singapore': [103.8198, 1.3521],
         'sg': [103.8198, 1.3521],
-        'germany': [10.4515, 51.1657],
-        'de': [10.4515, 51.1657],
+        'germany': [8.6821, 50.1109],
+        'de': [8.6821, 50.1109],
         'frankfurt': [8.6821, 50.1109],
         'united kingdom': [-3.436, 55.3781],
         'uk': [-3.436, 55.3781],
@@ -1479,6 +1481,9 @@
       const response = await fetch(url);
       if (!response.ok) throw new Error('Fetch failed');
       const data = await response.json();
+      currentServerDetail.memTotal = data.memTotal;
+      currentServerDetail.swapTotal = data.swapTotal;
+      currentServerDetail.rootFsTotal = data.rootFsTotal;
 
       renderServerDetail(data);
     } catch (err) {
@@ -1676,6 +1681,11 @@
       currentServerDetail.charts[metricKey] = chart;
     }
 
+    // 为百分比图表设置总量，允许 Y 轴显示实际物理占用数值
+    if (metricKey === 'memUsedPct') chart.totalValue = currentServerDetail.memTotal;
+    if (metricKey === 'swapUsedPct') chart.totalValue = currentServerDetail.swapTotal;
+    if (metricKey === 'rootFsUsedPct') chart.totalValue = currentServerDetail.rootFsTotal;
+
     try {
       const { instance, job, source } = currentServerDetail;
       let url = `/api/metrics/server-history?instance=${encodeURIComponent(instance)}&job=${encodeURIComponent(job)}&source=${encodeURIComponent(source)}&metric=${metricKey}`;
diff --git a/public/js/chart.js b/public/js/chart.js
index 9c6e593..b5a9f4e 100644
--- a/public/js/chart.js
+++ b/public/js/chart.js
@@ -477,6 +477,10 @@ class MetricChart {
         } else {
           label = v.toFixed(0) + this.unit;
         }
+      } else if (this.unit === '%' && this.totalValue) {
+        // 当提供了总量时，将百分比转换为实际数值显示（例如内存显示 2GB 而非 25%）
+        const absVal = v * (this.totalValue / 100);
+        label = window.formatBytes ? window.formatBytes(absVal) : absVal.toFixed(0);
       } else {
         label = (v >= 1000 ? (v / 1000).toFixed(1) + 'k' : v.toFixed(v < 10 && v > 0 ? 1 : 0)) + this.unit;
       }
diff --git a/server/prometheus-service.js b/server/prometheus-service.js
index 004d976..9a10d3b 100644
--- a/server/prometheus-service.js
+++ b/server/prometheus-service.js
@@ -558,6 +558,8 @@ async function getServerDetails(baseUrl, instance, job) {
     rootFsUsedPct: `100 - ((node_filesystem_avail_bytes{instance="${node}",job="${job}",mountpoint="/",fstype!~"rootfs|tmpfs"} * 100) / node_filesystem_size_bytes{instance="${node}",job="${job}",mountpoint="/",fstype!~"rootfs|tmpfs"})`,
     cpuCores: `count(count(node_cpu_seconds_total{instance="${node}",job="${job}"}) by (cpu))`,
     memTotal: `node_memory_MemTotal_bytes{instance="${node}",job="${job}"}`,
+    swapTotal: `node_memory_SwapTotal_bytes{instance="${node}",job="${job}"}`,
+    rootFsTotal: `node_filesystem_size_bytes{instance="${node}",job="${job}",mountpoint="/",fstype!~"rootfs|tmpfs"}`,
     uptime: `node_time_seconds{instance="${node}",job="${job}"} - node_boot_time_seconds{instance="${node}",job="${job}"}`,
     netRx: `sum(rate(node_network_receive_bytes_total{instance="${node}",job="${job}",device!~'tap.*|veth.*|br.*|docker.*|virbr*|podman.*|lo.*|vmbr.*|fwbr.|ip.*|gre.*|virbr.*|vnet.*'}[1m]))`,
     netTx: `sum(rate(node_network_transmit_bytes_total{instance="${node}",job="${job}",device!~'tap.*|veth.*|br.*|docker.*|virbr*|podman.*|lo.*|vmbr.*|fwbr.|ip.*|gre.*|virbr.*|vnet.*'}[1m]))`,