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authorBjörn-Egil Dahlberg <[email protected]>2009-12-10 19:59:24 +0100
committerBjörn Gustavsson <[email protected]>2010-01-13 15:35:41 +0100
commit6fd44e63eadc4d167a0db9178ff200e51c3231c1 (patch)
treeb39a6668f6f1acbf688a43d9778e566f53e49d4b /erts/emulator/test/system_info_SUITE.erl
parentbcf62deb7b8534b00ce69c977466a009252ee8a5 (diff)
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Improve binary garbage collection
The garbage collector in r13b03 is too aggressive in some cases. This commit raises the level of default initial allowed binary garbage (virtual heap for binaries) before collecting from 233 words to 46368 words (181 kB on 32-bit). A new option, min_bin_vheap_size, has been added to spawn_opt, system_flag and process_flag can be used to change the default values. The option can also be used with system_info and process_info to inspect the values. For symmetry the option min_heap_size has been added to the above functions where it was previously missing. Add testcases for min_bin_vheap_size and min_heap_size for functions process_flag/2, process_info/2, system_info/2 and spawn_opt/2.
Diffstat (limited to 'erts/emulator/test/system_info_SUITE.erl')
-rw-r--r--erts/emulator/test/system_info_SUITE.erl17
1 files changed, 11 insertions, 6 deletions
diff --git a/erts/emulator/test/system_info_SUITE.erl b/erts/emulator/test/system_info_SUITE.erl
index 2c7124839a..a1068a91cd 100644
--- a/erts/emulator/test/system_info_SUITE.erl
+++ b/erts/emulator/test/system_info_SUITE.erl
@@ -35,12 +35,12 @@
%-compile(export_all).
-export([all/1, init_per_testcase/2, fin_per_testcase/2]).
--export([process_count/1, system_version/1, misc_smoke_tests/1]).
+-export([process_count/1, system_version/1, misc_smoke_tests/1, heap_size/1]).
-define(DEFAULT_TIMEOUT, ?t:minutes(2)).
all(doc) -> [];
-all(suite) -> [process_count, system_version, misc_smoke_tests].
+all(suite) -> [process_count, system_version, misc_smoke_tests, heap_size].
init_per_testcase(_Case, Config) when is_list(Config) ->
Dog = ?t:timetrap(?DEFAULT_TIMEOUT),
@@ -135,8 +135,13 @@ misc_smoke_tests(Config) when is_list(Config) ->
?line ok.
-
-
-
-
+heap_size(doc) -> [];
+heap_size(suite) -> [];
+heap_size(Config) when is_list(Config) ->
+ ?line {min_bin_vheap_size, VHmin} = erlang:system_info(min_bin_vheap_size),
+ ?line {min_heap_size, Hmin} = erlang:system_info(min_heap_size),
+ ?line GCinf = erlang:system_info(garbage_collection),
+ ?line VHmin = proplists:get_value(min_bin_vheap_size, GCinf),
+ ?line Hmin = proplists:get_value(min_heap_size, GCinf),
+ ok.