diff options
| author | Giuseppe Di Natale <[email protected]> | 2018-01-29 10:24:52 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2018-01-29 10:24:52 -0800 |
| commit | 5e021f56d3437d3523904652fe3cc23ea1f4cb70 (patch) | |
| tree | 0953de761a9f65b79e7123197076fbc77560687a /module/zfs/dbuf_stats.c | |
| parent | 0735ecb33485e91a78357a274e47c2782858d8b9 (diff) | |
Add dbuf hash and dbuf cache kstats
Introduce kstats about the dbuf hash and dbuf cache
to make it easier to inspect state. This should help
with debugging and understanding of these portions
of the codebase.
Correct format of dbuf kstat file.
Introduce a dbc column to dbufs kstat to indicate if
a dbuf is in the dbuf cache.
Introduce field filtering in the dbufstat python script.
Introduce a no header option to the dbufstat python script.
Introduce a test case to test basic mru->mfu list movement
in the ARC.
Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Giuseppe Di Natale <[email protected]>
Closes #6906
Diffstat (limited to 'module/zfs/dbuf_stats.c')
| -rw-r--r-- | module/zfs/dbuf_stats.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/module/zfs/dbuf_stats.c b/module/zfs/dbuf_stats.c index 985bbd3e9..6c26718f2 100644 --- a/module/zfs/dbuf_stats.c +++ b/module/zfs/dbuf_stats.c @@ -46,14 +46,14 @@ static int dbuf_stats_hash_table_headers(char *buf, size_t size) { (void) snprintf(buf, size, - "%-88s | %-124s | %s\n" - "%-16s %-8s %-8s %-8s %-8s %-8s %-8s %-5s %-5s %5s | " - "%-5s %-5s %-8s %-6s %-8s %-12s " - "%-6s %-6s %-6s %-6s %-6s %-8s %-8s %-8s %-5s | " - "%-6s %-6s %-8s %-8s %-6s %-6s %-5s %-8s %-8s\n", + "%-96s | %-119s | %s\n" + "%-16s %-8s %-8s %-8s %-8s %-10s %-8s %-5s %-5s %-7s %3s | " + "%-5s %-5s %-9s %-6s %-8s %-12s " + "%-6s %-6s %-6s %-6s %-6s %-8s %-8s %-8s %-6s | " + "%-6s %-6s %-8s %-8s %-6s %-6s %-6s %-8s %-8s\n", "dbuf", "arcbuf", "dnode", "pool", "objset", "object", "level", - "blkid", "offset", "dbsize", "meta", "state", "dbholds", "list", - "atype", "flags", "count", "asize", "access", + "blkid", "offset", "dbsize", "meta", "state", "dbholds", "dbc", + "list", "atype", "flags", "count", "asize", "access", "mru", "gmru", "mfu", "gmfu", "l2", "l2_dattr", "l2_asize", "l2_comp", "aholds", "dtype", "btype", "data_bs", "meta_bs", "bsize", "lvls", "dholds", "blocks", "dsize"); @@ -75,10 +75,10 @@ __dbuf_stats_hash_table_data(char *buf, size_t size, dmu_buf_impl_t *db) __dmu_object_info_from_dnode(dn, &doi); nwritten = snprintf(buf, size, - "%-16s %-8llu %-8lld %-8lld %-8lld %-8llu %-8llu %-5d %-5d %-5lu | " - "%-5d %-5d 0x%-6x %-6lu %-8llu %-12llu " - "%-6lu %-6lu %-6lu %-6lu %-6lu %-8llu %-8llu %-8d %-5lu | " - "%-6d %-6d %-8lu %-8lu %-6llu %-6lu %-5lu %-8llu %-8llu\n", + "%-16s %-8llu %-8lld %-8lld %-8lld %-10llu %-8llu %-5d %-5d " + "%-7lu %-3d | %-5d %-5d 0x%-7x %-6lu %-8llu %-12llu " + "%-6lu %-6lu %-6lu %-6lu %-6lu %-8llu %-8llu %-8d %-6lu | " + "%-6d %-6d %-8lu %-8lu %-6llu %-6lu %-6lu %-8llu %-8llu\n", /* dmu_buf_impl_t */ spa_name(dn->dn_objset->os_spa), (u_longlong_t)dmu_objset_id(db->db_objset), @@ -90,6 +90,7 @@ __dbuf_stats_hash_table_data(char *buf, size_t size, dmu_buf_impl_t *db) !!dbuf_is_metadata(db), db->db_state, (ulong_t)refcount_count(&db->db_holds), + multilist_link_active(&db->db_cache_link), /* arc_buf_info_t */ abi.abi_state_type, abi.abi_state_contents, |