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| author | des <des@FreeBSD.org> | 2014-05-12 20:48:04 +0000 |
|---|---|---|
| committer | des <des@FreeBSD.org> | 2014-05-12 20:48:04 +0000 |
| commit | 7885a006b9088e8c59584316c48bb85a517ee6b9 (patch) | |
| tree | de5214fca2d019bd5b521bf5273eec5c80de2c0a /sys/vm | |
| parent | 62542709cb97d9f3588375fd439ad80ebd869b76 (diff) | |
| download | FreeBSD-src-7885a006b9088e8c59584316c48bb85a517ee6b9.zip FreeBSD-src-7885a006b9088e8c59584316c48bb85a517ee6b9.tar.gz | |
MFH (r264966): add sysctl OIDs for actual swap zone size and capacity
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/swap_pager.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/vm/swap_pager.c b/sys/vm/swap_pager.c index 54ebf9d..9af3085 100644 --- a/sys/vm/swap_pager.c +++ b/sys/vm/swap_pager.c @@ -164,6 +164,12 @@ static int overcommit = 0; SYSCTL_INT(_vm, OID_AUTO, overcommit, CTLFLAG_RW, &overcommit, 0, "Configure virtual memory overcommit behavior. See tuning(7) " "for details."); +static unsigned long swzone; +SYSCTL_ULONG(_vm, OID_AUTO, swzone, CTLFLAG_RD, &swzone, 0, + "Actual size of swap metadata zone"); +static unsigned long swap_maxpages; +SYSCTL_ULONG(_vm, OID_AUTO, swap_maxpages, CTLFLAG_RD, &swap_maxpages, 0, + "Maximum amount of swap supported"); /* bits from overcommit */ #define SWAP_RESERVE_FORCE_ON (1 << 0) @@ -506,7 +512,7 @@ swap_pager_init(void) void swap_pager_swap_init(void) { - int n, n2; + unsigned long n, n2; /* * Number of in-transit swap bp operations. Don't @@ -542,7 +548,7 @@ swap_pager_swap_init(void) /* * Initialize our zone. Right now I'm just guessing on the number * we need based on the number of pages in the system. Each swblock - * can hold 16 pages, so this is probably overkill. This reservation + * can hold 32 pages, so this is probably overkill. This reservation * is typically limited to around 32MB by default. */ n = cnt.v_page_count / 2; @@ -563,7 +569,9 @@ swap_pager_swap_init(void) n -= ((n + 2) / 3); } while (n > 0); if (n2 != n) - printf("Swap zone entries reduced from %d to %d.\n", n2, n); + printf("Swap zone entries reduced from %lu to %lu.\n", n2, n); + swap_maxpages = n * SWAP_META_PAGES; + swzone = n * sizeof(struct swblock); n2 = n; /* |
