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Code Issues Releases Activity

Update per-thread I/O statistics collection in ZFS.

Browse Source 
This allows to see processes I/O activity in 'top -m io' output.

PR		kern/156218
Reported by:	Marcus Reid <marcus@blazingdot.com>
Patch by:	avg
MFC after:	3 days
This commit is contained in:
Pawel Jakub Dawidek 2011-10-21 21:49:34 +00:00
parent 19b5c7c246
commit 72b880fa83
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=226620
2 changed files with 9 additions and 2 deletions
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4
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
View File

@ -627,6 +627,10 @@ dbuf_read(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags)
} else if (db->db_state == DB_UNCACHED) {
spa_t *spa = dn->dn_objset->os_spa;
#ifdef _KERNEL
curthread->td_ru.ru_inblock++;
#endif
if (zio == NULL)
zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CANFAIL);
dbuf_read_impl(db, zio, &flags);

7
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
View File

@ -397,9 +397,12 @@ dmu_buf_hold_array_by_dnode(dnode_t *dn, uint64_t offset, uint64_t length,
return (EIO);
}
/* initiate async i/o */
if (read) {
if (read)
(void) dbuf_read(db, zio, dbuf_flags);
}
#ifdef _KERNEL
else
curthread->td_ru.ru_oublock++;
#endif
dbp[i] = &db->db;
}
rw_exit(&dn->dn_struct_rwlock);