Index: sys/vm/vm_kern.c
===================================================================
RCS file: /zoo/pjd/repo/src/sys/vm/vm_kern.c,v
retrieving revision 1.128
diff -u -p -r1.128 vm_kern.c
--- sys/vm/vm_kern.c	5 Apr 2007 20:52:51 -0000	1.128
+++ sys/vm/vm_kern.c	26 May 2007 21:25:51 -0000
@@ -297,18 +297,24 @@ kmem_malloc(map, size, flags)
 	if (vm_map_findspace(map, vm_map_min(map), size, &addr)) {
 		vm_map_unlock(map);
 		if ((flags & M_NOWAIT) == 0) {
-			EVENTHANDLER_INVOKE(vm_lowmem, 0);
-			uma_reclaim();
-			vm_map_lock(map);
-			if (vm_map_findspace(map, vm_map_min(map), size, &addr)) {
+			int i;
+
+			for (i = 0; i < 16; i++) {
+				EVENTHANDLER_INVOKE(vm_lowmem, 0);
+				uma_reclaim();
+				vm_map_lock(map);
+				if (vm_map_findspace(map, vm_map_min(map), size, &addr) == KERN_SUCCESS)
+					goto found;
 				vm_map_unlock(map);
-				panic("kmem_malloc(%ld): kmem_map too small: %ld total allocated",
-					(long)size, (long)map->size);
+				tsleep(&i, 0, "nokva", (hz / 4) * (i + 1));
 			}
+			panic("kmem_malloc(%ld): kmem_map too small: %ld total allocated",
+			    (long)size, (long)map->size);
 		} else {
 			return (0);
 		}
 	}
+found:
 	offset = addr - VM_MIN_KERNEL_ADDRESS;
 	vm_object_reference(kmem_object);
 	vm_map_insert(map, kmem_object, offset, addr, addr + size,