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| author | ivoras <ivoras@FreeBSD.org> | 2010-10-25 21:46:23 +0000 |
|---|---|---|
| committer | ivoras <ivoras@FreeBSD.org> | 2010-10-25 21:46:23 +0000 |
| commit | 4dfcef74e1114e7c367d8f3f09ae8c847f597a15 (patch) | |
| tree | bd94b38547c9218e1e0a61547e072f2f5d94f16e /sys/ufs/ufs/ufs_dirhash.c | |
| parent | 4b2c6a01ba3a239ef6074caea4e39a610c600cbe (diff) | |
| download | FreeBSD-src-4dfcef74e1114e7c367d8f3f09ae8c847f597a15.zip FreeBSD-src-4dfcef74e1114e7c367d8f3f09ae8c847f597a15.tar.gz | |
Bring vfs.ufs.dirhash_maxmem into the age of the fruitbat and make it
autotuned. It is only an upper bound (the memory is not always allocated)
and the system contains a vm_lowmem handler so nothing will crash and burn
if it's tuned too high.
Reviewed by: mckusick
Diffstat (limited to 'sys/ufs/ufs/ufs_dirhash.c')
| -rw-r--r-- | sys/ufs/ufs/ufs_dirhash.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/ufs/ufs/ufs_dirhash.c b/sys/ufs/ufs/ufs_dirhash.c index d7c1d0d..9c89689 100644 --- a/sys/ufs/ufs/ufs_dirhash.c +++ b/sys/ufs/ufs/ufs_dirhash.c @@ -72,7 +72,8 @@ static int ufs_mindirhashsize = DIRBLKSIZ * 5; SYSCTL_INT(_vfs_ufs, OID_AUTO, dirhash_minsize, CTLFLAG_RW, &ufs_mindirhashsize, 0, "minimum directory size in bytes for which to use hashed lookup"); -static int ufs_dirhashmaxmem = 2 * 1024 * 1024; +static int ufs_dirhashmaxmem = 2 * 1024 * 1024; /* NOTE: initial value. It is + tuned in ufsdirhash_init() */ SYSCTL_INT(_vfs_ufs, OID_AUTO, dirhash_maxmem, CTLFLAG_RW, &ufs_dirhashmaxmem, 0, "maximum allowed dirhash memory usage"); static int ufs_dirhashmem; @@ -1290,6 +1291,9 @@ ufsdirhash_lowmem() void ufsdirhash_init() { + ufs_dirhashmaxmem = lmax(roundup(hibufspace / 64, PAGE_SIZE), + 2 * 1024 * 1024); + ufsdirhash_zone = uma_zcreate("DIRHASH", DH_NBLKOFF * sizeof(doff_t), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); mtx_init(&ufsdirhash_mtx, "dirhash list", NULL, MTX_DEF); |
