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mm: damon: Optimize reclaim parameters

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Signed-off-by: azrim <mirzaspc@gmail.com>
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tarsin 2022-01-25 08:45:54 +08:00 committed by azrim
parent 6cad89a148
commit 1e550e19b2
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GPG Key ID: 497F8FB059B45D1C
1 changed files with 16 additions and 16 deletions
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32
mm/damon/reclaim.c
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@ -33,9 +33,9 @@ static bool enabled __read_mostly = true;
* Time threshold for cold memory regions identification in microseconds.
*
* If a memory region is not accessed for this or longer time, DAMON_RECLAIM
* identifies the region as cold, and reclaims. 120 seconds by default.
* identifies the region as cold, and reclaims. 30 seconds by default.
*/
static unsigned long min_age __read_mostly = 120000000;
static unsigned long min_age __read_mostly = 30000000;
module_param(min_age, ulong, 0600);
/*
@ -46,9 +46,9 @@ module_param(min_age, ulong, 0600);
* used for limiting CPU consumption of DAMON_RECLAIM. If the value is zero,
* the limit is disabled.
*
* 10 ms by default.
* Disabled by default.
*/
static unsigned long quota_ms __read_mostly = 10;
static unsigned long quota_ms __read_mostly = 0;
module_param(quota_ms, ulong, 0600);
/*
@ -59,9 +59,9 @@ module_param(quota_ms, ulong, 0600);
* tried. This can be used for limiting consumption of CPU and IO. If this
* value is zero, the limit is disabled.
*
* 128 MiB by default.
* 512 MiB by default.
*/
static unsigned long quota_sz __read_mostly = 128 * 1024 * 1024;
static unsigned long quota_sz __read_mostly = 512 * 1024 * 1024;
module_param(quota_sz, ulong, 0600);
/*
@ -81,9 +81,9 @@ module_param(quota_reset_interval_ms, ulong, 0600);
* The watermarks check time interval in microseconds.
*
* Minimal time to wait before checking the watermarks, when DAMON_RECLAIM is
* enabled but inactive due to its watermarks rule. 5 seconds by default.
* enabled but inactive due to its watermarks rule. 20 seconds by default.
*/
static unsigned long wmarks_interval __read_mostly = 5000000;
static unsigned long wmarks_interval __read_mostly = 20000000;
module_param(wmarks_interval, ulong, 0600);
/*
@ -91,9 +91,9 @@ module_param(wmarks_interval, ulong, 0600);
*
* If free memory of the system in bytes per thousand bytes is higher than
* this, DAMON_RECLAIM becomes inactive, so it does nothing but periodically
* checks the watermarks. 500 (50%) by default.
* checks the watermarks. 700 (70%) by default.
*/
static unsigned long wmarks_high __read_mostly = 500;
static unsigned long wmarks_high __read_mostly = 700;
module_param(wmarks_high, ulong, 0600);
/*
@ -101,9 +101,9 @@ module_param(wmarks_high, ulong, 0600);
*
* If free memory of the system in bytes per thousand bytes is between this and
* the low watermark, DAMON_RECLAIM becomes active, so starts the monitoring
* and the reclaiming. 400 (40%) by default.
* and the reclaiming. 500 (50%) by default.
*/
static unsigned long wmarks_mid __read_mostly = 400;
static unsigned long wmarks_mid __read_mostly = 500;
module_param(wmarks_mid, ulong, 0600);
/*
@ -112,18 +112,18 @@ module_param(wmarks_mid, ulong, 0600);
* If free memory of the system in bytes per thousand bytes is lower than this,
* DAMON_RECLAIM becomes inactive, so it does nothing but periodically checks
* the watermarks. In the case, the system falls back to the LRU-based page
* granularity reclamation logic. 200 (20%) by default.
* granularity reclamation logic. 100 (10%) by default.
*/
static unsigned long wmarks_low __read_mostly = 200;
static unsigned long wmarks_low __read_mostly = 100;
module_param(wmarks_low, ulong, 0600);
/*
* Sampling interval for the monitoring in microseconds.
*
* The sampling interval of DAMON for the cold memory monitoring. Please refer
* to the DAMON documentation for more detail. 5 ms by default.
* to the DAMON documentation for more detail. 20 ms by default.
*/
static unsigned long sample_interval __read_mostly = 5000;
static unsigned long sample_interval __read_mostly = 20000;
module_param(sample_interval, ulong, 0600);
/*