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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2014-08-30 12:55:14 +0200
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2014-08-30 12:55:14 +0200
commit91f0887ca2345c2bd02747e4b437076641d77cd9 (patch)
treecad27f653affb0b6e6b2d549cde2351c400932c2 /vm
parentc7cdf5ff96e7c3bb008877893aa194908dca2185 (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.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/vm/vm_pageout.c b/vm/vm_pageout.c
index d57da78..ecedb57 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;