Author: delphij
Date: Tue Jul 29 07:13:03 2014
New Revision: 269224
URL: http://svnweb.freebsd.org/changeset/base/269224
Log:
5034 ARC's buf_hash_table is too small
Reviewed by: Christopher Siden <christopher.si...@delphix.com>
Reviewed by: George Wilson <george.wil...@delphix.com>
Reviewed by: Saso Kiselkov <skiselkov...@gmail.com>
Reviewed by: Richard Elling <richard.ell...@gmail.com>
Approved by: Gordon Ross <g...@nexenta.com>
illumos/illumos-gate@63e911b6fce0acc8e2a1d31ebdaf0c4c12580a14
Modified:
vendor-sys/illumos/dist/uts/common/fs/zfs/arc.c
Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/arc.c
==============================================================================
--- vendor-sys/illumos/dist/uts/common/fs/zfs/arc.c Tue Jul 29 07:08:32
2014 (r269223)
+++ vendor-sys/illumos/dist/uts/common/fs/zfs/arc.c Tue Jul 29 07:13:03
2014 (r269224)
@@ -200,6 +200,7 @@ int zfs_arc_grow_retry = 0;
int zfs_arc_shrink_shift = 0;
int zfs_arc_p_min_shift = 0;
int zfs_disable_dup_eviction = 0;
+int zfs_arc_average_blocksize = 8 * 1024; /* 8KB */
/*
* Note that buffers can be in one of 6 states:
@@ -938,10 +939,11 @@ buf_init(void)
/*
* The hash table is big enough to fill all of physical memory
- * with an average 64K block size. The table will take up
- * totalmem*sizeof(void*)/64K (eg. 128KB/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 * 65536 < physmem * PAGESIZE)
+ while (hsize * zfs_arc_average_blocksize < physmem * PAGESIZE)
hsize <<= 1;
retry:
buf_hash_table.ht_mask = hsize - 1;
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
