From 69de34219af4a4d100cc5ed155a68ab03393fca4 Mon Sep 17 00:00:00 2001 From: Tim Chase Date: Sun, 30 Aug 2015 20:59:23 -0500 Subject: Dbuf hash table should be sized as is the arc hash table Commit 49ddb315066e372f31bda29a5c546a9eccc8b418 added the zfs_arc_average_blocksize parameter to allow control over the size of the arc hash table. The dbuf hash table's size should be determined similarly. Signed-off-by: Tim Chase Signed-off-by: Brian Behlendorf Closes #3721 --- module/zfs/dbuf.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'module/zfs/dbuf.c') diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c index 3807418c9..bab546c28 100644 --- a/module/zfs/dbuf.c +++ b/module/zfs/dbuf.c @@ -376,10 +376,11 @@ dbuf_init(void) /* * The hash table is big enough to fill all of physical memory - * with an average 4K block size. The table will take up - * totalmem*sizeof(void*)/4K (i.e. 2MB/GB with 8-byte pointers). + * with an average block size of zfs_arc_average_blocksize (default 8K). + * By default, the table will take up + * totalmem * sizeof(void*) / 8K (1MB per GB with 8-byte pointers). */ - while (hsize * 4096 < physmem * PAGESIZE) + while (hsize * zfs_arc_average_blocksize < physmem * PAGESIZE) hsize <<= 1; retry: -- cgit v1.2.3