1syntax = "proto3";
2
3package envoy.admin.v4alpha;
4
5import "udpa/annotations/status.proto";
6import "udpa/annotations/versioning.proto";
7
8option java_package = "io.envoyproxy.envoy.admin.v4alpha";
9option java_outer_classname = "MemoryProto";
10option java_multiple_files = true;
11option (udpa.annotations.file_status).package_version_status = NEXT_MAJOR_VERSION_CANDIDATE;
12
13// [#protodoc-title: Memory]
14
15// Proto representation of the internal memory consumption of an Envoy instance. These represent
16// values extracted from an internal TCMalloc instance. For more information, see the section of the
17// docs entitled ["Generic Tcmalloc Status"](https://gperftools.github.io/gperftools/tcmalloc.html).
18// [#next-free-field: 7]
19message Memory {
20 option (udpa.annotations.versioning).previous_message_type = "envoy.admin.v3.Memory";
21
22 // The number of bytes allocated by the heap for Envoy. This is an alias for
23 // `generic.current_allocated_bytes`.
24 uint64 allocated = 1;
25
26 // The number of bytes reserved by the heap but not necessarily allocated. This is an alias for
27 // `generic.heap_size`.
28 uint64 heap_size = 2;
29
30 // The number of bytes in free, unmapped pages in the page heap. These bytes always count towards
31 // virtual memory usage, and depending on the OS, typically do not count towards physical memory
32 // usage. This is an alias for `tcmalloc.pageheap_unmapped_bytes`.
33 uint64 pageheap_unmapped = 3;
34
35 // The number of bytes in free, mapped pages in the page heap. These bytes always count towards
36 // virtual memory usage, and unless the underlying memory is swapped out by the OS, they also
37 // count towards physical memory usage. This is an alias for `tcmalloc.pageheap_free_bytes`.
38 uint64 pageheap_free = 4;
39
40 // The amount of memory used by the TCMalloc thread caches (for small objects). This is an alias
41 // for `tcmalloc.current_total_thread_cache_bytes`.
42 uint64 total_thread_cache = 5;
43
44 // The number of bytes of the physical memory usage by the allocator. This is an alias for
45 // `generic.total_physical_bytes`.
46 uint64 total_physical_bytes = 6;
47}
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