diff options
Diffstat (limited to 'sys/kern/vfs_subr.c')
| -rw-r--r-- | sys/kern/vfs_subr.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index eaa498009684..245adbc318d3 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -407,6 +407,27 @@ vnode_fini(void *mem, int size) rw_destroy(BO_LOCKPTR(bo)); } +/* + * Provide the size of NFS nclnode and NFS fh for calculation of the + * vnode memory consumption. The size is specified directly to + * eliminate dependency on NFS-private header. + * + * Other filesystems may use bigger or smaller (like UFS and ZFS) + * private inode data, but the NFS-based estimation is ample enough. + * Still, we care about differences in the size between 64- and 32-bit + * platforms. + * + * Namecache structure size is heuristically + * sizeof(struct namecache_ts) + CACHE_PATH_CUTOFF + 1. + */ +#ifdef _LP64 +#define NFS_NCLNODE_SZ (528 + 64) +#define NC_SZ 148 +#else +#define NFS_NCLNODE_SZ (360 + 32) +#define NC_SZ 92 +#endif + static void vntblinit(void *dummy __unused) { @@ -422,12 +443,12 @@ vntblinit(void *dummy __unused) * marginal ratio of desiredvnodes to the physical memory size is * 1:64. However, desiredvnodes is limited by the kernel's heap * size. The memory required by desiredvnodes vnodes and vm objects - * must not exceed 1/7th of the kernel's heap size. + * must not exceed 1/10th of the kernel's heap size. */ physvnodes = maxproc + pgtok(vm_cnt.v_page_count) / 64 + 3 * min(98304 * 16, pgtok(vm_cnt.v_page_count)) / 64; - virtvnodes = vm_kmem_size / (7 * (sizeof(struct vm_object) + - sizeof(struct vnode))); + virtvnodes = vm_kmem_size / (10 * (sizeof(struct vm_object) + + sizeof(struct vnode) + NC_SZ * ncsizefactor + NFS_NCLNODE_SZ)); desiredvnodes = min(physvnodes, virtvnodes); if (desiredvnodes > MAXVNODES_MAX) { if (bootverbose) |