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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2014-08-30 12:55:14 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2014-08-30 12:55:14 +0200 |
| commit | 91f0887ca2345c2bd02747e4b437076641d77cd9 (patch) | |
| tree | cad27f653affb0b6e6b2d549cde2351c400932c2 /vm | |
| parent | c7cdf5ff96e7c3bb008877893aa194908dca2185 (diff) | |
Tune pageout parameters
This targets having always at least 8% free memory instead of just 1%.
This has shown improving buildd stability a lot. Also increase the
reserved amount to nowadays standards.
* vm/vm_pageout.c (VM_PAGE_FREE_TARGET): Increase to 10%.
(VM_PAGE_FREE_MIN): Increase to 8%.
(VM_PAGE_FREE_RESERVED): Increase to 500 pages.
(VM_PAGEOUT_RESERVED_INTERNAL): Increase to 150 pages.
(VM_PAGEOUT_RESERVED_REALLY): Increase to 100 pages.
Diffstat (limited to 'vm')
| -rw-r--r-- | vm/vm_pageout.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/vm/vm_pageout.c b/vm/vm_pageout.c index d57da782..ecedb571 100644 --- a/vm/vm_pageout.c +++ b/vm/vm_pageout.c @@ -97,7 +97,7 @@ */ #ifndef VM_PAGE_FREE_TARGET -#define VM_PAGE_FREE_TARGET(free) (15 + (free) / 80) +#define VM_PAGE_FREE_TARGET(free) (150 + (free) * 10 / 100) #endif /* VM_PAGE_FREE_TARGET */ /* @@ -106,7 +106,7 @@ */ #ifndef VM_PAGE_FREE_MIN -#define VM_PAGE_FREE_MIN(free) (10 + (free) / 100) +#define VM_PAGE_FREE_MIN(free) (100 + (free) * 8 / 100) #endif /* VM_PAGE_FREE_MIN */ /* When vm_page_external_count exceeds vm_page_external_limit, @@ -132,7 +132,7 @@ * operation by dipping into the reserved pool of pages. */ #ifndef VM_PAGE_FREE_RESERVED -#define VM_PAGE_FREE_RESERVED 50 +#define VM_PAGE_FREE_RESERVED 500 #endif /* VM_PAGE_FREE_RESERVED */ /* @@ -144,7 +144,7 @@ */ #ifndef VM_PAGEOUT_RESERVED_INTERNAL -#define VM_PAGEOUT_RESERVED_INTERNAL(reserve) ((reserve) - 25) +#define VM_PAGEOUT_RESERVED_INTERNAL(reserve) ((reserve) - 250) #endif /* VM_PAGEOUT_RESERVED_INTERNAL */ /* @@ -156,7 +156,7 @@ */ #ifndef VM_PAGEOUT_RESERVED_REALLY -#define VM_PAGEOUT_RESERVED_REALLY(reserve) ((reserve) - 40) +#define VM_PAGEOUT_RESERVED_REALLY(reserve) ((reserve) - 400) #endif /* VM_PAGEOUT_RESERVED_REALLY */ unsigned int vm_pageout_reserved_internal = 0; |