Date: Mon, 25 Oct 2010 21:46:23 +0000 (UTC) From: Ivan Voras <ivoras@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r214359 - head/sys/ufs/ufs Message-ID: <201010252146.o9PLkNNu078104@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: ivoras Date: Mon Oct 25 21:46:23 2010 New Revision: 214359 URL: http://svn.freebsd.org/changeset/base/214359 Log: 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 Modified: head/sys/ufs/ufs/ufs_dirhash.c Modified: head/sys/ufs/ufs/ufs_dirhash.c ============================================================================== --- head/sys/ufs/ufs/ufs_dirhash.c Mon Oct 25 20:52:33 2010 (r214358) +++ head/sys/ufs/ufs/ufs_dirhash.c Mon Oct 25 21:46:23 2010 (r214359) @@ -72,7 +72,8 @@ static int ufs_mindirhashsize = DIRBLKSI 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);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201010252146.o9PLkNNu078104>