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Re-embed multilist_t storage

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This commit partially reverts changes to multilists in PR 7968
(multi-threaded spa-sync()) and adds some cache line alignments to
separate read-only multilists and heavily modified refcount's to different
cache lines.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-by: iXsystems, Inc.
Closes #12158
This commit is contained in:
Alexander Motin
2021-06-10 12:42:31 -04:00
committed by GitHub
parent eec5ba113e
commit ffdf019cb3
12 changed files with 99 additions and 104 deletions
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include/sys/arc_impl.h
+6 -6
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@@ -74,20 +74,20 @@ typedef struct arc_state {
/*
* list of evictable buffers
*/
multilist_t *arcs_list[ARC_BUFC_NUMTYPES];
multilist_t arcs_list[ARC_BUFC_NUMTYPES];
/*
* supports the "dbufs" kstat
*/
arc_state_type_t arcs_state;
/*
* total amount of evictable data in this state
*/
zfs_refcount_t arcs_esize[ARC_BUFC_NUMTYPES];
zfs_refcount_t arcs_esize[ARC_BUFC_NUMTYPES] ____cacheline_aligned;
/*
* total amount of data in this state; this includes: evictable,
* non-evictable, ARC_BUFC_DATA, and ARC_BUFC_METADATA.
*/
zfs_refcount_t arcs_size;
/*
* supports the "dbufs" kstat
*/
arc_state_type_t arcs_state;
} arc_state_t;
typedef struct arc_callback arc_callback_t;