File 1721-erts-Increase-default-process-limit.patch of Package erlang

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File 1721-erts-Increase-default-process-limit.patch of Package erlang

From cdb053d8fbb8fec0a5e55d408784404f51fa777f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Niemier?= <lukasz@niemier.pl>
Date: Thu, 6 Jul 2023 22:03:26 +0200
Subject: [PATCH] erts: Increase default process limit

---
 erts/doc/src/erl_cmd.xml                    |  2 +-
 erts/emulator/beam/erl_process.h            |  2 +-
 erts/emulator/test/node_container_SUITE.erl | 55 ++++++++++++---------
 system/doc/efficiency_guide/advanced.xml    |  2 +-
 4 files changed, 35 insertions(+), 26 deletions(-)

diff --git a/erts/doc/src/erl_cmd.xml b/erts/doc/src/erl_cmd.xml
index f6a36ecffd..8a2337c5cd 100644
--- a/erts/doc/src/erl_cmd.xml
+++ b/erts/doc/src/erl_cmd.xml
@@ -1131,7 +1131,7 @@ $ <input>erl \
 	however, be changed in the future. The actual value chosen can be
 	checked by calling
 	<seeerl marker="erlang#system_info_process_limit">erlang:system_info(process_limit)</seeerl>.
-	The default value is <c>262144</c>
+	The default value is <c>1048576</c>
 </item>
 <tag><marker id="+Q"/><marker id="max_ports"/><c><![CDATA[+Q Number]]></c></tag>
 <item>
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index a0fe781bb1..a587dde4dd 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -78,7 +78,7 @@ typedef struct process Process;
 #define ERTS_MAX_NO_OF_DIRTY_CPU_SCHEDULERS ERTS_MAX_NO_OF_SCHEDULERS
 #define ERTS_MAX_NO_OF_DIRTY_IO_SCHEDULERS ERTS_MAX_NO_OF_SCHEDULERS
 
-#define ERTS_DEFAULT_MAX_PROCESSES (1 << 18)
+#define ERTS_DEFAULT_MAX_PROCESSES (1 << 20)
 
 #define ERTS_HEAP_ALLOC(Type, Size)					\
 erts_alloc((Type), (Size))
diff --git a/erts/emulator/test/node_container_SUITE.erl b/erts/emulator/test/node_container_SUITE.erl
index 13d111a1ad..67936a51a2 100644
--- a/erts/emulator/test/node_container_SUITE.erl
+++ b/erts/emulator/test/node_container_SUITE.erl
@@ -28,6 +28,7 @@
 -module(node_container_SUITE).
 -author('rickard.green@uab.ericsson.se').
 
+-include_lib("stdlib/include/assert.hrl").
 -include_lib("common_test/include/ct.hrl").
 
 -export([all/0, suite/0, init_per_suite/1, end_per_suite/1,
@@ -904,21 +905,29 @@ mkpidlist(N, Ps) -> mkpidlist(N-1, [spawn(fun () -> ok end)|Ps]).
 
 
 iter_max_procs(Config) when is_list(Config) ->
- NoMoreTests = make_ref(),
- erlang:send_after(10000, self(), NoMoreTests),
-
 %% Disable logging to avoid "Too many processes" log which can
 %% cause ct_logs to crash when trying to spawn "async print job".
- #{level := LoggerLevel} = logger:get_primary_config(),
- ok = logger:set_primary_config(level, none),
- Res = try
- R = chk_max_proc_line(),
- R = chk_max_proc_line(),
- done = chk_max_proc_line_until(NoMoreTests, R),
- R
- after
- logger:set_primary_config(level, LoggerLevel)
+ {ok, Peer, Node} = ?CT_PEER(["+P", "2048", "-kernel", "logger_level", "none"]),
+ NoMoreTests = make_ref(),
+
+ Self = self(),
+ NcData = make_ref(),
+
+ %% Sleep to give all `peer` processes time to go down.
+ ct:sleep(500),
+
+ RPid = spawn_link(Node, fun () ->
+ erlang:send_after(10000, self(), NoMoreTests),
+ R = chk_max_proc_line(),
+ R = chk_max_proc_line(),
+ done = chk_max_proc_line_until(NoMoreTests, R),
+ Self ! {NcData, R}
+ end),
+ Res = receive
+ {NcData, R} -> R
 end,
+ unlink(RPid),
+ stop_node(Peer, Node),
 Cmt = io_lib:format("max processes = ~p; "
 "process line length = ~p",
 [element(2, Res), element(1, Res)]),
@@ -959,7 +968,7 @@ chk_max_proc_line_until(NoMoreTests, Res) ->
 NoMoreTests ->
 done
 after 0 ->
- Res = chk_max_proc_line(),
+ ?assertEqual(Res, chk_max_proc_line()),
 chk_max_proc_line_until(NoMoreTests, Res)
 end.
 
@@ -972,20 +981,20 @@ magic_ref(Config) when is_list(Config) ->
 MRef0 = MRef1,
 Me = self(),
 {Pid, Mon} = spawn_opt(fun () ->
-				 receive
-				 {Me, MRef} ->
-					 Me ! {self(), erts_debug:get_internal_state({magic_ref,MRef})}
-				 end
-			 end,
-			 [link, monitor]),
+ receive
+ {Me, MRef} ->
+ Me ! {self(), erts_debug:get_internal_state({magic_ref,MRef})}
+ end
+ end,
+ [link, monitor]),
 Pid ! {self(), MRef0},
 receive
-	{Pid, Info} ->
-	 {Addr0, 3, true} = Info
+ {Pid, Info} ->
+ {Addr0, 3, true} = Info
 end,
 receive
-	{'DOWN', Mon, process, Pid, _} ->
-	 ok
+ {'DOWN', Mon, process, Pid, _} ->
+ ok
 end,
 MaxTime = erlang:monotonic_time(millisecond) + 1000,
 %% The DOWN signal is sent before heap is cleaned up,
diff --git a/system/doc/efficiency_guide/advanced.xml b/system/doc/efficiency_guide/advanced.xml
index 7fdb154412..33d66b195e 100644
--- a/system/doc/efficiency_guide/advanced.xml
+++ b/system/doc/efficiency_guide/advanced.xml
@@ -155,7 +155,7 @@
 <row>
 <cell>Processes</cell>
 <cell>The maximum number of simultaneously alive Erlang processes
-	is by default 262,144. This limit can be configured at startup.
+	is by default 1,048,576. This limit can be configured at startup.
 	For more information, see the
 	<seecom marker="erts:erl#max_processes"><c>+P</c></seecom>
 	command-line flag in the
-- 
2.35.3

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File 1721-erts-Increase-default-process-limit.patch of Package erlang

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