27. 27
IO Performance
New Search
i ndex=i dx_ common_ 3y sour cet ype=pur est r g_ moni t or | r egex Name="^ . *$" | r egex host name="^ . *$" |
t i mechar t span=1m sum( ops_ r ead) as r ead sum( ops_ wr i t e) as wr i t e
Date tim e range
5,280 events (8/28/14 7:30:00.000 PM to 8/28/14 11:30:00.000 PM )
_time
read
write
8:00 PM
Thu Aug 28
2014
9:00 PM 10:00 PM 11:00 PM
100,000
25,000
50,000
75,000
Visualization
✓5,280 events (8/28/14 7:30:00.000 PM to 8/28/14 11:30:00.000 PM )
_time
read_ latency
write_ latency
8:00 PM
Thu Aug 28
2014
9:00 PM 10:00 PM 11:00 PM
2
4
6
_tim e ↕ read_latency ↕ write_latency ↕
2014-08-28 19:30:00 1.082000 0.556000
2014-08-28 19:31:00 0.821000 0.715000
2014-08-28 19:32:00 0.777000 0.713000
2014-08-28 19:33:00 0.744000 0.584000
Visualization
Latency [msec]
IOPS
30. 30
The issue of Auto Tiering
• Latency spikes during region moves2014- 05- 24
Read ServiceTim e
Write ServiceTim e
00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
0
200
400
600
800
Running Not running
• To been addressed.
• To reduce the impact ,
we migrated top-tier VMs from FC to SSD
31. 31
All Flash
New Search
i ndex=i dx_ common_ 3y sour cet ype=pur est r g_ moni t or | r egex Name="^ . *$" | r egex host name="^ . *$" |
t i mechar t span=1m sum( ops_ r ead) as r ead sum( ops_ wr i t e) as wr i t e
Date tim e range
5,280 events (8/28/14 7:30:00.000 PM to 8/28/14 11:30:00.000 PM )
_time
read
write
8:00 PM
Thu Aug 28
2014
9:00 PM 10:00 PM 11:00 PM
100,000
25,000
50,000
75,000
Visualization
✓5,280 events (8/28/14 7:30:00.000 PM to 8/28/14 11:30:00.000 PM )
_time
read_ latency
write_ latency
8:00 PM
Thu Aug 28
2014
9:00 PM 10:00 PM 11:00 PM
2
4
6
_tim e ↕ read_latency ↕ write_latency ↕
2014-08-28 19:30:00 1.082000 0.556000
2014-08-28 19:31:00 0.821000 0.715000
2014-08-28 19:32:00 0.777000 0.713000
2014-08-28 19:33:00 0.744000 0.584000
Visualization
Latency [msec]
IOPS