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# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) 2023 Robin Jarry
MEM_TOTAL = "total_bytes"
MEM_USED = "used_bytes"
def info() -> "dict[Name, tuple[Description, Type]]":
return {
MEM_TOTAL: ("The total size of reserved memory in bytes.", "gauge"),
MEM_USED: ("The currently used memory in bytes.", "gauge"),
}
def metrics(sock: "TelemetrySocket") -> "list[tuple[Name, Value, Labels]]":
zones = {}
used = 0
for zone in sock.cmd("/eal/memzone_list") or []:
z = sock.cmd("/eal/memzone_info", zone)
start = int(z["Hugepage_base"], 16)
end = start + (z["Hugepage_size"] * z["Hugepage_used"])
used += z["Length"]
for s, e in list(zones.items()):
if s < start < e < end:
zones[s] = end
break
if start < s < end < e:
del zones[s]
zones[start] = e
break
else:
zones[start] = end
return [
(MEM_TOTAL, sum(end - start for (start, end) in zones.items()), {}),
(MEM_USED, max(0, used), {}),
]
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