diff options
| author | Ryan Moeller <[email protected]> | 2020-03-27 12:14:46 -0400 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-03-27 09:14:46 -0700 |
| commit | 9a51738b60c2164822baefa17f8fdcebe9d82fbc (patch) | |
| tree | a16926d3b550160a937d533e41a6651b6f3ad6c8 /module/os/linux | |
| parent | 3f38797338f2e4b16e8e0065e21f1bca6ef59784 (diff) | |
Let default arc_c_max be platform dependent
Linux changed the default max ARC size to 1/2 of physical memory to
deal with shortcomings of the Linux SLUB allocator. Other platforms
do not require the same logic.
Implement an arc_default_max() function to determine a default max ARC
size in platform code.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Ryan Moeller <[email protected]>
Closes #10155
Diffstat (limited to 'module/os/linux')
| -rw-r--r-- | module/os/linux/zfs/arc_os.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/module/os/linux/zfs/arc_os.c b/module/os/linux/zfs/arc_os.c index 1e0cabd0a..bff0f0517 100644 --- a/module/os/linux/zfs/arc_os.c +++ b/module/os/linux/zfs/arc_os.c @@ -60,6 +60,16 @@ int64_t last_free_memory; free_memory_reason_t last_free_reason; +/* + * Return a default max arc size based on the amount of physical memory. + */ +uint64_t +arc_default_max(uint64_t min, uint64_t allmem) +{ + /* Default to 1/2 of all memory. */ + return (MAX(allmem / 2, min)); +} + #ifdef _KERNEL /* * Return maximum amount of memory that we could possibly use. Reduced |