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syntax = "proto3";
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package envoy.admin.v2alpha;
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option java_outer_classname = "MemoryProto";
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option java_multiple_files = true;
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option java_package = "io.envoyproxy.envoy.admin.v2alpha";
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// [#protodoc-title: Memory]
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// Proto representation of the internal memory consumption of an Envoy instance. These represent
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// values extracted from an internal TCMalloc instance. For more information, see the section of the
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// docs entitled ["Generic Tcmalloc Status"](https://gperftools.github.io/gperftools/tcmalloc.html).
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message Memory {
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// The number of bytes allocated by the heap for Envoy. This is an alias for
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// `generic.current_allocated_bytes`.
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uint64 allocated = 1;
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// The number of bytes reserved by the heap but not necessarily allocated. This is an alias for
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// `generic.heap_size`.
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uint64 heap_size = 2;
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// The number of bytes in free, unmapped pages in the page heap. These bytes always count towards
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// virtual memory usage, and depending on the OS, typically do not count towards physical memory
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// usage. This is an alias for `tcmalloc.pageheap_unmapped_bytes`.
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uint64 pageheap_unmapped = 3;
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// The number of bytes in free, mapped pages in the page heap. These bytes always count towards
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// virtual memory usage, and unless the underlying memory is swapped out by the OS, they also
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// count towards physical memory usage. This is an alias for `tcmalloc.pageheap_free_bytes`.
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uint64 pageheap_free = 4;
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// The amount of memory used by the TCMalloc thread caches (for small objects). This is an alias
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// for `tcmalloc.current_total_thread_cache_bytes`.
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uint64 total_thread_cache = 5;
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}
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