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authorJohn Högberg <[email protected]>2018-08-29 16:21:17 +0200
committerJohn Högberg <[email protected]>2018-12-07 12:28:51 +0100
commit1d549eddbeeccf7d108310466de5f63af04b004c (patch)
tree6c3623605f7f1b80ec732caac2d4adb1b6bb08d3 /erts/emulator/sys/win32
parent4b9836a2dada60005e01067af04a0e0d9361fcee (diff)
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Mark free blocks in pooled carriers as unused (MADV_FREE)
This lets the OS reclaim the physical memory associated with these blocks which reduces the impact of long-lived awkward allocations. A small allocated block will still keep a huge carrier alive, but the unused part of the carrier will now be available to the OS. Co-authored-by: Dmytro Lytovchenko <[email protected]>
Diffstat (limited to 'erts/emulator/sys/win32')
-rw-r--r--erts/emulator/sys/win32/sys.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index a1c630d68a..b95aadc9b2 100644
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -186,7 +186,9 @@ void sys_primitive_init(HMODULE beam)
UWord
erts_sys_get_page_size(void)
{
- return (UWord) 4*1024; /* Guess 4 KB */
+ SYSTEM_INFO info;
+ GetSystemInfo(&info);
+ return (UWord)info.dwPageSize;
}
Uint