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author | mm <mm@FreeBSD.org> | 2013-04-06 17:15:47 +0000 |
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committer | mm <mm@FreeBSD.org> | 2013-04-06 17:15:47 +0000 |
commit | 9c031f1fcf371d39b79161408056863b701e9dd4 (patch) | |
tree | 6e291ad3b65ee789bf2e8481200cf5c9228d8213 /sys/cddl | |
parent | b4795f1bd1833e379a030d3197d485d2f30f5c75 (diff) | |
download | FreeBSD-src-9c031f1fcf371d39b79161408056863b701e9dd4.zip FreeBSD-src-9c031f1fcf371d39b79161408056863b701e9dd4.tar.gz |
MFV r248660:
Merge vendor change - modify time processing in deadman thread.
Illumos ZFS issues:
3618 ::zio dcmd does not show timestamp data
MFC after: 3 weeks
Diffstat (limited to 'sys/cddl')
4 files changed, 13 insertions, 12 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h index be74c20..ba9704b 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev_impl.h @@ -104,8 +104,7 @@ struct vdev_queue { avl_tree_t vq_read_tree; avl_tree_t vq_write_tree; avl_tree_t vq_pending_tree; - uint64_t vq_io_complete_ts; - uint64_t vq_io_delta_ts; + hrtime_t vq_io_complete_ts; kmutex_t vq_lock; }; diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h index cd50353..342e7c1 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h @@ -443,7 +443,7 @@ struct zio { uint64_t io_offset; uint64_t io_deadline; - uint64_t io_timestamp; + hrtime_t io_timestamp; avl_node_t io_offset_node; avl_node_t io_deadline_node; avl_tree_t *io_vdev_tree; diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c index f0de5f5..bdbff31 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c @@ -3200,10 +3200,10 @@ vdev_deadman(vdev_t *vd) * the spa_deadman_synctime we panic the system. */ fio = avl_first(&vq->vq_pending_tree); - delta = ddi_get_lbolt64() - fio->io_timestamp; - if (delta > NSEC_TO_TICK(spa_deadman_synctime(spa))) { - zfs_dbgmsg("SLOW IO: zio timestamp %llu, " - "delta %llu, last io %llu", + delta = gethrtime() - fio->io_timestamp; + if (delta > spa_deadman_synctime(spa)) { + zfs_dbgmsg("SLOW IO: zio timestamp %lluns, " + "delta %lluns, last io %lluns", fio->io_timestamp, delta, vq->vq_io_complete_ts); fm_panic("I/O to pool '%s' appears to be " diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c index 8bde2eb..4f84312 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c @@ -44,8 +44,11 @@ int zfs_vdev_max_pending = 10; int zfs_vdev_min_pending = 4; -/* deadline = pri + ddi_get_lbolt64() >> time_shift) */ -int zfs_vdev_time_shift = 6; +/* + * The deadlines are grouped into buckets based on zfs_vdev_time_shift: + * deadline = pri + gethrtime() >> time_shift) + */ +int zfs_vdev_time_shift = 29; /* each bucket is 0.537 seconds */ /* exponential I/O issue ramp-up rate */ int zfs_vdev_ramp_rate = 2; @@ -391,7 +394,7 @@ vdev_queue_io(zio_t *zio) mutex_enter(&vq->vq_lock); - zio->io_timestamp = ddi_get_lbolt64(); + zio->io_timestamp = gethrtime(); zio->io_deadline = (zio->io_timestamp >> zfs_vdev_time_shift) + zio->io_priority; @@ -424,8 +427,7 @@ vdev_queue_io_done(zio_t *zio) avl_remove(&vq->vq_pending_tree, zio); - vq->vq_io_complete_ts = ddi_get_lbolt64(); - vq->vq_io_delta_ts = vq->vq_io_complete_ts - zio->io_timestamp; + vq->vq_io_complete_ts = gethrtime(); for (int i = 0; i < zfs_vdev_ramp_rate; i++) { zio_t *nio = vdev_queue_io_to_issue(vq, zfs_vdev_max_pending); |