noahshaw11 commented on code in PR #3985:
URL: https://github.com/apache/couchdb/pull/3985#discussion_r876229365
##########
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:
Making my own print function to better fit the data structure returned by
`resource_hoggers_data`:
```
([email protected])2> couch_debug:resource_hoggers(MI, memory).
id | memory
"couch_prometheus_server[<0.279.0>]" | 1945464
"config[<0.136.0>]" | 1115104
"erlang:apply/2[<0.1030.0>]" | 689368
"code_server[<0.51.0>]" | 426432
"couch_epi_data_gen_flags_config[<0.158.0>]" | 284688
"erlang:apply/2[<0.1029.0>]" | 264040
"couch_log_server[<0.167.0>]" | 263944
"couch_stats_aggregator[<0.183.0>]" | 196992
"couch_epi_functions_gen_chttpd_handlers[<0.145.0>]" | 196912
"couch_epi_functions_gen_couch_db[<0.149.0>]" | 176216
"erl_prim_loader[<0.10.0>]" | 176208
"couch_proc_manager[<0.337.0>]" | 142872
"couch_secondary_services[<0.335.0>]" | 110240
"couch_epi_data_gen_dreyfus_black_list[<0.153.0>]" | 109280
"config_event[<0.137.0>]" | 69808
"standard_error[<0.68.0>]" | 42304
"couch_epi_functions_gen_global_changes[<0.160.0>]" | 42264
"couch_epi_functions_gen_feature_flags[<0.156.0>]" | 42264
"couch_epi_functions_gen_couch_index[<0.151.0>]" | 42264
"couch_epi_functions_gen_chttpd[<0.147.0>]" | 42264
ok
```
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