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authorDaniil Baturin <daniil@baturin.org>2021-10-24 11:17:49 +0700
committerDaniil Baturin <daniil@baturin.org>2021-10-24 11:28:16 +0700
commit241a19943b7321aa1f2e2ece86b5ad68997390fe (patch)
tree9e817de4a7ded8ad0156da8b98de23c9f057aafb /src/op_mode/show_ram.py
parentaeff049aea37115a7bbe52cd0da4d987fbccde82 (diff)
downloadvyos-1x-241a19943b7321aa1f2e2ece86b5ad68997390fe.tar.gz
vyos-1x-241a19943b7321aa1f2e2ece86b5ad68997390fe.zip
T3937: rewrite the "show system memory" script in Python
Diffstat (limited to 'src/op_mode/show_ram.py')
-rwxr-xr-xsrc/op_mode/show_ram.py64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/op_mode/show_ram.py b/src/op_mode/show_ram.py
new file mode 100755
index 000000000..5818ec132
--- /dev/null
+++ b/src/op_mode/show_ram.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+def get_system_memory():
+ from re import search as re_search
+
+ def find_value(keyword, mem_data):
+ regex = keyword + ':\s+(\d+)'
+ res = re_search(regex, mem_data).group(1)
+ return int(res)
+
+ with open("/proc/meminfo", "r") as f:
+ mem_data = f.read()
+
+ total = find_value('MemTotal', mem_data)
+ available = find_value('MemAvailable', mem_data)
+ buffers = find_value('Buffers', mem_data)
+ cached = find_value('Cached', mem_data)
+
+ used = total - available
+
+ res = {
+ "total": total,
+ "free": available,
+ "used": used,
+ "buffers": buffers,
+ "cached": cached
+ }
+
+ return res
+
+def get_system_memory_human():
+ from vyos.util import bytes_to_human
+
+ mem = get_system_memory()
+
+ for key in mem:
+ # The Linux kernel exposes memory values in kilobytes,
+ # so we need to normalize them
+ mem[key] = bytes_to_human(mem[key], initial_exponent=10)
+
+ return mem
+
+if __name__ == '__main__':
+ mem = get_system_memory_human()
+
+ print("Total: {}".format(mem["total"]))
+ print("Free: {}".format(mem["free"]))
+ print("Used: {}".format(mem["used"]))
+