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/zfs/arc.c | |
| 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/zfs/arc.c')
| -rw-r--r-- | module/zfs/arc.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/module/zfs/arc.c b/module/zfs/arc.c index c6b194183..8a0c1a4a7 100644 --- a/module/zfs/arc.c +++ b/module/zfs/arc.c @@ -7150,13 +7150,13 @@ arc_init(void) arc_lowmem_init(); #endif - /* Set max to 1/2 of all memory */ - arc_c_max = allmem / 2; - -#ifdef _KERNEL - /* Set min cache to 1/32 of all memory, or 32MB, whichever is more */ + /* Set min cache to 1/32 of all memory, or 32MB, whichever is more. */ arc_c_min = MAX(allmem / 32, 2ULL << SPA_MAXBLOCKSHIFT); -#else + + /* How to set default max varies by platform. */ + arc_c_max = arc_default_max(arc_c_min, allmem); + +#ifndef _KERNEL /* * In userland, there's only the memory pressure that we artificially * create (see arc_available_memory()). Don't let arc_c get too |