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Add sysctls/tunables for dbuf cache size.

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MFC after:	2 weeks
This commit is contained in:
Alexander Motin 2018-02-27 01:36:43 +00:00
parent 1d01310593
commit 060bac1db8
1 changed files with 10 additions and 0 deletions
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10
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
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@ -134,6 +134,16 @@ int dbuf_cache_max_shift = 5;
uint_t dbuf_cache_hiwater_pct = 10;
uint_t dbuf_cache_lowater_pct = 10;
SYSCTL_DECL(_vfs_zfs);
SYSCTL_QUAD(_vfs_zfs, OID_AUTO, dbuf_cache_max_bytes, CTLFLAG_RWTUN,
&dbuf_cache_max_bytes, 0, "dbuf cache size in bytes");
SYSCTL_INT(_vfs_zfs, OID_AUTO, dbuf_cache_max_shift, CTLFLAG_RDTUN,
&dbuf_cache_max_shift, 0, "dbuf size as log2 fraction of ARC");
SYSCTL_UINT(_vfs_zfs, OID_AUTO, dbuf_cache_hiwater_pct, CTLFLAG_RWTUN,
&dbuf_cache_hiwater_pct, 0, "max percents above the dbuf cache size");
SYSCTL_UINT(_vfs_zfs, OID_AUTO, dbuf_cache_lowater_pct, CTLFLAG_RWTUN,
&dbuf_cache_lowater_pct, 0, "max percents below the dbuf cache size");
/* ARGSUSED */
static int
dbuf_cons(void *vdb, void *unused, int kmflag)