Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

add top_procs_running.erl #1

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open

add top_procs_running.erl #1

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
621a39b
add top_procs_running.erl
Dec 16, 2013
c4e053e
add copyright
Dec 17, 2013
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
47 changes: 47 additions & 0 deletions top_procs_running.erl
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@

Copy link
Owner

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

How about an author / copyright statement at the top here?

% Shows which kinds of processes are running in the system (grouping by initial_call MFA)
% Useful for analyzing process leaks
%
% Example:
%
% 1> TopProcsRunning().
% [{{proc_lib,init_p,5},12},
% {{erlang,apply,2},8},
% {{group,server,3},2},
% {{application_master,start_it,4},1},
% {{user_drv,server,2},1},
% {{otp_ring0,start,2},1}]
%
% 2> ProcsGroupBy(current_function).
% [{{gen_server,loop,6},11},
% {{group,server_loop,3},2},
% {{application_master,loop_it,4},1},
% {{user_drv,server_loop,5},1},
% {{standard_error,server_loop,1},1},
% {{code_server,loop,1},1},
% {{global,loop_the_locker,1},1},
% {{gen_event,fetch_msg,5},1},
% {{erl_prim_loader,loop,3},1},
% {{erl_eval,do_apply,6},1},
% {{init,loop,1},1},
% {{global,loop_the_registrar,0},1},
% {{shell,shell_rep,4},1},
% {{application_master,main_loop,2},1}]

f(ProcsGroupBy).
ProcsGroupBy = fun(Kind) ->
Map = [proplists:get_value(Kind, process_info(Pid)) || Pid <- processes()],

Reduce = lists:foldl(fun(Mfa, Acc) ->
dict:update_counter(Mfa, 1, Acc)
end, dict:new(), Map),

lists:sort(fun({_, N1}, {_, N2}) ->
N2 =< N1
end, dict:to_list(Reduce))
end.

f(TopProcsRunning).
TopProcsRunning = fun() ->
ProcsGroupBy(initial_call)
end.