iilyak commented on code in PR #3985:
URL: https://github.com/apache/couchdb/pull/3985#discussion_r876106943
##########
src/couch/src/couch_debug.erl:
##########
@@ -620,6 +635,90 @@ info_size(InfoKV) ->
{binary, BinInfos} -> lists:sum([S || {_, S, _} <- BinInfos]);
{_, V} -> V
end.
+resource_hoggers(MemoryInfo, InfoKey) ->
+ KeyFun = fun
+ ({_Pid, _Id, undefined}) -> undefined;
+ ({_Pid, _Id, DataMap}) -> maps:get(InfoKey, DataMap)
+ end,
+ resource_hoggers(MemoryInfo, InfoKey, KeyFun).
+
+resource_hoggers(MemoryInfo, InfoKey, KeyFun) ->
+ HoggersData = resource_hoggers_data(MemoryInfo, InfoKey, KeyFun),
+ TableSpec = [
+ {50, left, name},
+ {19, centre, InfoKey},
+ {id}
+ ],
+ print_table(HoggersData, TableSpec).
+
+resource_hoggers_data(MemoryInfo, InfoKey, KeyFun) when is_atom(InfoKey) ->
+ resource_hoggers_data(MemoryInfo, InfoKey, KeyFun, 20).
+
+resource_hoggers_data(MemoryInfo, InfoKey, KeyFun, N) when is_atom(InfoKey) ->
+ SortedTuples = resource_hoggers_data(MemoryInfo, InfoKey, KeyFun,
undefined),
Review Comment:
The following doesn't terminates (even if I add extra guard)
```erlang
MI = couch_debug:memory_info(erlang:processes()).
couch_debug:resource_hoggers(MI, memory).
```
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