diff options
| author | dyson <dyson@FreeBSD.org> | 1998-02-23 08:22:48 +0000 |
|---|---|---|
| committer | dyson <dyson@FreeBSD.org> | 1998-02-23 08:22:48 +0000 |
| commit | c4e82fbab0e2810b076cfdd1462d5c086e1c442b (patch) | |
| tree | 32edadf5a10589c683a222e603fe1062a64fbfb1 /sys/vm/vm_kern.c | |
| parent | b77de226503076b55efebae9b92333cd8c2535d9 (diff) | |
| download | FreeBSD-src-c4e82fbab0e2810b076cfdd1462d5c086e1c442b.zip FreeBSD-src-c4e82fbab0e2810b076cfdd1462d5c086e1c442b.tar.gz | |
Significantly improve the efficiency of the swap pager, which appears to
have declined due to code-rot over time. The swap pager rundown code
has been clean-up, and unneeded wakeups removed. Lots of splbio's
are changed to splvm's. Also, set the dynamic tunables for the
pageout daemon to be more sane for larger systems (thereby decreasing
the daemon overheadla.)
Diffstat (limited to 'sys/vm/vm_kern.c')
| -rw-r--r-- | sys/vm/vm_kern.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sys/vm/vm_kern.c b/sys/vm/vm_kern.c index a9fca2e..2f4485a 100644 --- a/sys/vm/vm_kern.c +++ b/sys/vm/vm_kern.c @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_kern.c,v 1.43 1998/02/05 03:32:39 dyson Exp $ + * $Id: vm_kern.c,v 1.44 1998/02/06 12:14:23 eivind Exp $ */ /* @@ -147,7 +147,7 @@ kmem_alloc(map, size) * offset within the kernel map. */ vm_map_lock(map); - if (vm_map_findspace(map, 0, size, &addr)) { + if (vm_map_findspace(map, vm_map_min(map), size, &addr)) { vm_map_unlock(map); return (0); } @@ -291,7 +291,7 @@ kmem_malloc(map, size, waitflag) * offset within the kernel map. */ vm_map_lock(map); - if (vm_map_findspace(map, 0, size, &addr)) { + if (vm_map_findspace(map, vm_map_min(map), size, &addr)) { vm_map_unlock(map); if (map == mb_map) { mb_map_full = TRUE; @@ -299,7 +299,8 @@ kmem_malloc(map, size, waitflag) return (0); } if (waitflag == M_WAITOK) - panic("kmem_malloc: kmem_map too small"); + panic("kmem_malloc(%d): kmem_map too small: %d total allocated", + size, map->size); return (0); } offset = addr - VM_MIN_KERNEL_ADDRESS; @@ -390,7 +391,7 @@ kmem_alloc_wait(map, size) * to lock out sleepers/wakers. */ vm_map_lock(map); - if (vm_map_findspace(map, 0, size, &addr) == 0) + if (vm_map_findspace(map, vm_map_min(map), size, &addr) == 0) break; /* no space now; see if we can ever get space */ if (vm_map_max(map) - vm_map_min(map) < size) { |
