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lmkd: Set the default free swap threshold to 10% for all devices 

Lower the min swap threshold to 10% for all devices to limit kills while
swap still has enough space.

Bug: 155709603
Test: memory stress test with multiple foreground apps
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Merged-In: I443486763c034ed0603ea52b81c060c3969af9a5
Change-Id: I443486763c034ed0603ea52b81c060c3969af9a5
This commit is contained in:
Suren Baghdasaryan 2020-05-19 13:07:23 -07:00
parent 5c039b53d8
commit fb1f592602
1 changed files with 2 additions and 3 deletions
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5
lmkd.cpp
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@ -129,8 +129,7 @@
* System property defaults * System property defaults
*/ */
/* ro.lmk.swap_free_low_percentage property defaults */ /* ro.lmk.swap_free_low_percentage property defaults */
#define DEF_LOW_SWAP_LOWRAM 10 #define DEF_LOW_SWAP 10
#define DEF_LOW_SWAP 20
/* ro.lmk.thrashing_limit property defaults */ /* ro.lmk.thrashing_limit property defaults */
#define DEF_THRASHING_LOWRAM 30 #define DEF_THRASHING_LOWRAM 30
#define DEF_THRASHING 100 #define DEF_THRASHING 100
@ -3215,7 +3214,7 @@ static void update_props() {
per_app_memcg = per_app_memcg =
property_get_bool("ro.config.per_app_memcg", low_ram_device); property_get_bool("ro.config.per_app_memcg", low_ram_device);
swap_free_low_percentage = clamp(0, 100, property_get_int32("ro.lmk.swap_free_low_percentage", swap_free_low_percentage = clamp(0, 100, property_get_int32("ro.lmk.swap_free_low_percentage",
low_ram_device ? DEF_LOW_SWAP_LOWRAM : DEF_LOW_SWAP)); DEF_LOW_SWAP));
psi_partial_stall_ms = property_get_int32("ro.lmk.psi_partial_stall_ms", psi_partial_stall_ms = property_get_int32("ro.lmk.psi_partial_stall_ms",
low_ram_device ? DEF_PARTIAL_STALL_LOWRAM : DEF_PARTIAL_STALL); low_ram_device ? DEF_PARTIAL_STALL_LOWRAM : DEF_PARTIAL_STALL);
psi_complete_stall_ms = property_get_int32("ro.lmk.psi_complete_stall_ms", psi_complete_stall_ms = property_get_int32("ro.lmk.psi_complete_stall_ms",