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2026-07-16 - 17:59
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6.osadl.org (updated Thu Jul 16, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
269952399153142,7cyclictest2750941-21latency_hist09:50:011
269952399131122,7cyclictest2761806-21kworker/u8:1+events_unbound10:30:001
269952399129122,5cyclictest2738206-21kworker/u8:1+flush-179:009:14:591
269952399122116,4cyclictest2697862-21kworker/u8:2+events_unbound07:10:251
269952399121116,3cyclictest2697862-21kworker/u8:2+flush-179:007:20:251
269952399116110,4cyclictest2786254-21kworker/u8:1+events_unbound12:10:261
269952199115106,6cyclictest2718852-21latency_hist08:10:010
269952399114106,5cyclictest2766822-21kworker/u8:2+flush-179:010:40:201
269952399113104,6cyclictest2799243-21kworker/u8:2+flush-179:012:20:181
269952399112102,7cyclictest2726789-21kworker/u8:0+events_unbound09:05:201
269952399110104,4cyclictest2722081-21kworker/u8:3+flush-179:008:40:251
269952399110101,6cyclictest2738206-21kworker/u8:1+flush-179:009:20:031
269952399110100,8cyclictest2708265-21kworker/u8:0+flush-179:007:40:251
269952399109100,6cyclictest2777671-21kworker/u8:2+flush-179:011:15:191
26995239910899,5cyclictest2775057-21kworker/u8:1+flush-179:011:10:251
26995239910796,8cyclictest2758892-21latency_hist10:15:011
269952399105100,3cyclictest2803749-21kworker/u8:3+flush-179:012:35:251
26995239910495,7cyclictest2752501-21kworker/u8:0+flush-179:010:15:211
26995239910495,6cyclictest2766822-21kworker/u8:2+flush-179:010:55:251
26995219910498,4cyclictest2705809-21kworker/u8:3+flush-179:007:40:000
26995219910494,6cyclictest2752501-21kworker/u8:0+flush-179:010:05:160
26995219910488,14cyclictest2725473-21apt-get08:30:110
26995239910395,5cyclictest2794147-21kworker/u8:0+events_unbound12:05:151
26995239910296,4cyclictest2783065-21kworker/u8:3+events_unbound11:45:241
26995239910296,4cyclictest2766822-21kworker/u8:2+flush-179:010:50:241
26995239910296,4cyclictest2766822-21kworker/u8:2+flush-179:010:50:231
26995239910295,5cyclictest2726789-21kworker/u8:0+flush-179:008:50:241
26995219910292,8cyclictest2733423-21apt-get08:55:120
26995239910194,5cyclictest2752501-21kworker/u8:0+events_unbound10:00:251
26995239910192,7cyclictest2705809-21kworker/u8:3+events_unbound08:00:011
26995239910192,6cyclictest2786254-21kworker/u8:1+flush-179:012:15:141
26995219910087,9cyclictest2761806-21kworker/u8:1+flush-179:010:35:160
2699523999991,6cyclictest2723632-21latency_hist08:25:021
2699523999991,6cyclictest2723632-21latency_hist08:25:011
2699523999991,5cyclictest2728450-21kworker/u8:2+flush-179:008:45:221
2699523999990,6cyclictest2735318-21kworker/u8:2+events_unbound09:25:191
2699523999892,4cyclictest2786254-21kworker/u8:1+flush-179:011:55:201
2699523999892,4cyclictest2783065-21kworker/u8:3+flush-179:012:00:241
2699523999890,6cyclictest2744612-21kworker/u8:0+flush-179:009:35:161
2699523999790,5cyclictest2705809-21kworker/u8:3+flush-179:007:35:181
2699523999789,6cyclictest2752501-21kworker/u8:0+flush-179:009:55:011
2699521999787,6cyclictest2744612-21kworker/u8:0+flush-179:009:35:170
2699523999584,8cyclictest1213033-21systemd-journal08:35:001
2699523999488,4cyclictest2763649-21kworker/u8:0+flush-179:010:30:111
2699523999485,7cyclictest2762087-21latency_hist10:25:021
2699521999484,7cyclictest2742967-21kworker/u8:3+flush-179:009:30:210
2699523999385,6cyclictest2735318-21kworker/u8:2+events_unbound09:40:261
2699523999286,5cyclictest2697862-21kworker/u8:2+events_unbound07:25:241
2699521999284,5cyclictest2735318-21kworker/u8:2+flush-179:009:20:160
2699523999182,6cyclictest2786254-21kworker/u8:1+events_unbound12:25:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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