feat(zram): 优化 zram 状态显示逻辑并支持多设备数据汇总

show_zram_status.sh

@@ -7,27 +7,65 @@
 
 show_zram_status() {
   echo "========== zram 运行战报 =========="
-  # 获取 zram 信息并进行格式化处理
+
-  local stats=$(zramctl --raw --noheadings --output DATA,COMPR,TOTAL)
+  if ! command -v zramctl >/dev/null 2>&1; then
+    echo "未安装 zramctl。"
+    return 1
+  fi
+
+  local table
+  table=$(zramctl --noheadings --output NAME,ALGORITHM,DISKSIZE,DATA,COMPR,TOTAL,COMP-RATIO,MOUNTPOINT 2>/dev/null || true)
+
+  if [ -z "$table" ]; then
+    echo "未发现活跃的 zram 设备。"
+    return 0
+  fi
+
+  printf '%s\n' "$table"
+
+  local stats
+  stats=$(zramctl --bytes --raw --noheadings --output DATA,COMPR,TOTAL 2>/dev/null || true)
 
   if [ -z "$stats" ]; then
     echo "未发现活跃的 zram 设备。"
-    return
+    return 0
   fi
 
-  # 提取数据 (单位通常是字节)
+  local data_size compr_size total_mem saved_bytes ratio
-  local data_size=$(echo "$stats" | awk '{print $1}')  # 存入的原始数据
+  read -r data_size compr_size total_mem <<EOF
-  local compr_size=$(echo "$stats" | awk '{print $2}') # 压缩后的大小
+$(printf '%s\n' "$stats" | awk '{data += $1; compr += $2; total += $3} END {print data+0, compr+0, total+0}')
-  local total_mem=$(echo "$stats" | awk '{print $3}')  # 实际占用的物理内存(含元数据)
+EOF
 
-  # 计算压缩率和节省空间 (转为 MB)
+  if [ "$total_mem" -le 0 ]; then
-  local saved_mb=$(( (data_size - total_mem) / 1024 / 1024 ))
+    echo "当前 zram 尚无可统计的数据。"
-  local ratio=$(awk "BEGIN {printf \"%.2f\", $data_size / $total_mem}")
+    return 0
+  fi
 
-  echo "1. 原始数据量: $((data_size / 1024 / 1024)) MB"
+  saved_bytes=$((data_size - total_mem))
-  echo "2. 实际占用内存: $((total_mem / 1024 / 1024)) MB"
+  if [ "$saved_bytes" -lt 0 ]; then
-  echo "3. 压缩倍率: ${ratio}x"
+    saved_bytes=0
-  echo "4. 为系统节省了: **${saved_mb} MB** 物理内存"
+  fi
+
+  ratio=$(awk -v data="$data_size" -v total="$total_mem" 'BEGIN { printf "%.2f", data / total }')
+
+  format_bytes() {
+    awk -v bytes="$1" 'BEGIN {
+      split("B KiB MiB GiB TiB PiB", units, " ")
+      idx = 1
+      while (bytes >= 1024 && idx < 6) {
+        bytes /= 1024
+        idx++
+      }
+      printf "%.2f %s", bytes, units[idx]
+    }'
+  }
+
+  echo "----------- 汇总 -----------"
+  echo "1. 原始数据量: $(format_bytes "$data_size")"
+  echo "2. 压缩后大小: $(format_bytes "$compr_size")"
+  echo "3. 实际占用内存: $(format_bytes "$total_mem")"
+  echo "4. 压缩倍率: ${ratio}x"
+  echo "5. 为系统节省了: $(format_bytes "$saved_bytes") 物理内存"
   echo "==================================="
 }