On Thu, 14 Dec 2017, Stefan Priebe - Profihost AG wrote:
>
> Am 14.12.2017 um 13:22 schrieb Sage Weil:
> > On Thu, 14 Dec 2017, Stefan Priebe - Profihost AG wrote:
> >> Hello,
> >>
> >> Am 21.11.2017 um 11:06 schrieb Stefan Priebe - Profihost AG:
> >>> Hello,
> >>>
> >>> to measure performance / latency for filestore we used:
> >>> filestore:apply_latency
> >>> filestore:commitcycle_latency
> >>> filestore:journal_latency
> >>> filestore:queue_transaction_latency_avg
> >>>
> >>> What are the correct ones for bluestore?
> >>
> >> really nobody? Does nobody track the latency under bluestore?
> >
> > I forget the long names off the top of my head, but the interesting
> > latency measures are marked with a low priority and come up (with a wide
> > terminal) when you do 'ceph daemonperf osd.N'. You can see the metrics,
> > pririties, and descriptions with 'ceph daemon osd.N perf schema'.
>
> uhuh very long list. Any idea which ones are relevant?
>
> ceph daemon osd.8 perf dump
If you do 'perf schema' you'll see a 'priority' property that calls out
the important ones. That's how the daemonperf command decides which ones
to show (based on terminal width and priorities).
sage
>
> shows me a lot of stuff and even a lot of wait or latancy values.
>
> ceph daemon osd.8 perf dump | egrep "wait|lat"
> "kv_flush_lat": {
> "kv_commit_lat": {
> "kv_lat": {
> "state_prepare_lat": {
> "state_aio_wait_lat": {
> "state_io_done_lat": {
> "state_kv_queued_lat": {
> "state_kv_commiting_lat": {
> "state_kv_done_lat": {
> "state_deferred_queued_lat": {
> "state_deferred_aio_wait_lat": {
> "state_deferred_cleanup_lat": {
> "state_finishing_lat": {
> "state_done_lat": {
> "throttle_lat": {
> "submit_lat": {
> "commit_lat": {
> "read_lat": {
> "read_onode_meta_lat": {
> "read_wait_aio_lat": {
> "compress_lat": {
> "decompress_lat": {
> "csum_lat": {
> "complete_latency": {
> "complete_latency": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "op_latency": {
> "op_process_latency": {
> "op_prepare_latency": {
> "op_r_latency": {
> "op_r_process_latency": {
> "op_r_prepare_latency": {
> "op_w_latency": {
> "op_w_process_latency": {
> "op_w_prepare_latency": {
> "op_rw_latency": {
> "op_rw_process_latency": {
> "op_rw_prepare_latency": {
> "op_before_queue_op_lat": {
> "op_before_dequeue_op_lat": {
> "subop_latency": {
> "subop_w_latency": {
> "subop_pull_latency": {
> "subop_push_latency": {
> "osd_tier_flush_lat": {
> "osd_tier_promote_lat": {
> "osd_tier_r_lat": {
> "initial_latency": {
> "started_latency": {
> "reset_latency": {
> "start_latency": {
> "primary_latency": {
> "peering_latency": {
> "backfilling_latency": {
> "waitremotebackfillreserved_latency": {
> "waitlocalbackfillreserved_latency": {
> "notbackfilling_latency": {
> "repnotrecovering_latency": {
> "repwaitrecoveryreserved_latency": {
> "repwaitbackfillreserved_latency": {
> "reprecovering_latency": {
> "activating_latency": {
> "waitlocalrecoveryreserved_latency": {
> "waitremoterecoveryreserved_latency": {
> "recovering_latency": {
> "recovered_latency": {
> "clean_latency": {
> "active_latency": {
> "replicaactive_latency": {
> "stray_latency": {
> "getinfo_latency": {
> "getlog_latency": {
> "waitactingchange_latency": {
> "incomplete_latency": {
> "down_latency": {
> "getmissing_latency": {
> "waitupthru_latency": {
> "notrecovering_latency": {
> "get_latency": {
> "submit_latency": {
> "submit_sync_latency": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
> "wait": {
>
> Stefan
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