Illumos #3618 ::zio dcmd does not show timestamp data

[zfs.git] / module / zfs / vdev_queue.c

diff --git a/module/zfs/vdev_queue.c b/module/zfs/vdev_queue.c
index 3f2793b..b2cc6b8 100644 (file)
--- a/module/zfs/vdev_queue.c
+++ b/module/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;
@@ -396,7 +399,7 @@ 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;
 
@@ -430,8 +433,8 @@ vdev_queue_io_done(zio_t *zio)
 
        avl_remove(&vq->vq_pending_tree, zio);
 
-       zio->io_delta = ddi_get_lbolt64() - zio->io_timestamp;
-       vq->vq_io_complete_ts = ddi_get_lbolt64();
+       zio->io_delta = gethrtime() - zio->io_timestamp;
+       vq->vq_io_complete_ts = gethrtime();
        vq->vq_io_delta_ts = vq->vq_io_complete_ts - zio->io_timestamp;
 
        for (i = 0; i < zfs_vdev_ramp_rate; i++) {