From: Xiubo Li <xiubli@xxxxxxxxxx>
The idea came from Jeff's comment in previous patch series:
# cat /sys/kernel/debug/ceph/81b62c25-7c41-4345-9140-201730bfdde0.client4333/metrics
item total sum_lat(us) avg_lat(us) min_lat(us) max_lat(us) stdev(us)
---------------------------------------------------------------------------------------------------
read 492 20817000 24000 3000 1027000 2571
write 400 1184122000 2994000 16000 5613000 53949
metadata 4 22000 5000 1000 16000 207
item total miss hit
-------------------------------------------------
d_lease 2 0 1
caps 2 6 102140
Xiubo Li (2):
ceph: move all the metric helpers into one separate file
ceph: add standard deviation support for read/write/metadata perf
metric
fs/ceph/Makefile | 2 +-
fs/ceph/debugfs.c | 70 +++++++++++------
fs/ceph/mds_client.c | 95 +----------------------
fs/ceph/metric.c | 214 +++++++++++++++++++++++++++++++++++++++++++++++++++
fs/ceph/metric.h | 102 ++++++------------------
5 files changed, 286 insertions(+), 197 deletions(-)
create mode 100644 fs/ceph/metric.c
--
1.8.3.1
