diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/sysctl/vm.txt | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt index abd6f5cd95ad..6ff0af89ae77 100644 --- a/Documentation/sysctl/vm.txt +++ b/Documentation/sysctl/vm.txt @@ -16,7 +16,6 @@ Default values and initialization routines for most of these files can be found in mm/swap.c. Currently, these files are in /proc/sys/vm: -- kswapd - overcommit_memory - page-cluster - dirty_async_ratio @@ -34,39 +33,6 @@ See Documentation/filesystems/proc.txt ============================================================== -kswapd: - -Kswapd is the kernel swapout daemon. That is, kswapd is that -piece of the kernel that frees memory when it gets fragmented -or full. Since every system is different, you'll probably want -some control over this piece of the system. - -The numbers in this page correspond to the numbers in the -struct pager_daemon {tries_base, tries_min, swap_cluster -}; The tries_base and swap_cluster probably have the -largest influence on system performance. - -tries_base The maximum number of pages kswapd tries to - free in one round is calculated from this - number. Usually this number will be divided - by 4 or 8 (see mm/vmscan.c), so it isn't as - big as it looks. - When you need to increase the bandwidth to/from - swap, you'll want to increase this number. -tries_min This is the minimum number of times kswapd - tries to free a page each time it is called. - Basically it's just there to make sure that - kswapd frees some pages even when it's being - called with minimum priority. -swap_cluster This is the number of pages kswapd writes in - one turn. You want this large so that kswapd - does it's I/O in large chunks and the disk - doesn't have to seek often, but you don't want - it to be too large since that would flood the - request queue. - -============================================================== - overcommit_memory: This value contains a flag that enables memory overcommitment. |