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2026-04-09 - 19:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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 100 highest latencies:
System rack7slot4s.osadl.org (updated Thu Apr 09, 2026 12:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2385399726,5cyclictest131rcu_preempt08:55:140
2385399726,5cyclictest131rcu_preempt08:55:140
2385399706,9cyclictest131rcu_preempt09:35:130
2386999693,38cyclictest2954-21ssh12:05:122
2386999693,38cyclictest2954-21ssh12:05:122
2385399582,7cyclictest131rcu_preempt12:25:140
23869995230,9cyclictest27-21ksoftirqd/210:20:112
2386199521,37cyclictest26304-21ssh12:00:111
2385399523,10cyclictest13358-21ssh09:30:110
2386999471,29cyclictest13373-21ssh09:30:122
2385399461,8cyclictest131rcu_preempt08:00:120
2386999453,30cyclictest4278-21ssh09:25:122
23861994319,18cyclictest21-21ksoftirqd/110:45:131
2386199431,30cyclictest25141-21ssh10:30:111
2385399432,31cyclictest31581-21ssh09:40:130
2386999423,32cyclictest0-21swapper/211:28:482
2385399412,32cyclictest11980-21ssh12:10:110
2387799392,20cyclictest28366irq/58-eth009:20:153
2386199395,28cyclictest15670-21ssh12:30:141
2386999382,19cyclictest4239-21ssh09:40:482
2386999381,5cyclictest131rcu_preempt08:30:122
23869993810,12cyclictest27-21ksoftirqd/211:51:482
2385399382,23cyclictest29934-21ssh12:20:120
2386999372,5cyclictest92446snmpd08:15:132
23861993718,8cyclictest21-21ksoftirqd/109:15:121
23877993514,18cyclictest0-21swapper/310:53:483
2386999356,10cyclictest27-21ksoftirqd/211:05:132
2386199351,24cyclictest21294-21ssh10:10:131
2386999344,14cyclictest261rcuc/210:55:112
2386999344,14cyclictest261rcuc/210:55:112
2385399342,27cyclictest13466-21ssh11:35:140
2386999332,15cyclictest9263-21cat07:25:192
2385399332,23cyclictest3556-21ssh10:52:480
2386999322,24cyclictest3071-21ssh10:00:122
23869993214,11cyclictest27-21ksoftirqd/208:05:142
23861993226,4cyclictest0-21swapper/111:10:131
2386199322,24cyclictest9975-21ssh09:10:131
2385399322,22cyclictest14233-21awk07:30:240
2387799312,23cyclictest28366irq/58-eth011:10:133
23869993113,12cyclictest22456-21ssh09:35:132
23877993015,9cyclictest28366irq/58-eth012:00:123
2386999303,22cyclictest0-21swapper/212:20:502
2386999302,21cyclictest0-21swapper/207:50:132
2386999302,15cyclictest6607-21ssh12:25:152
2386999302,14cyclictest24716-21ssh12:35:132
2386199308,13cyclictest29132-21ssh10:50:111
2386199303,8cyclictest0-21swapper/108:15:131
2386199302,21cyclictest3029-21ssh11:28:481
2385399303,20cyclictest4432-21ssh11:30:110
2387799292,17cyclictest28366irq/58-eth011:40:143
2386999294,17cyclictest22346irq/40-dwc2_hso08:00:122
2386999292,21cyclictest24368-21ssh09:16:032
23869992916,10cyclictest0-21swapper/211:40:132
2386199292,21cyclictest9579-21diskmemload12:05:111
2386199292,21cyclictest9579-21diskmemload12:05:111
2386199292,21cyclictest8206-21ssh09:45:131
2386999286,4cyclictest131rcu_preempt07:55:132
23869992813,12cyclictest27-21ksoftirqd/210:40:132
2386999281,18cyclictest9969-21ssh09:10:122
23853992819,5cyclictest24715-21sh12:35:130
2387799272,16cyclictest28366irq/58-eth012:05:113
2387799272,16cyclictest28366irq/58-eth012:05:113
23877992715,6cyclictest0-21swapper/311:50:133
2386999274,15cyclictest22346irq/40-dwc2_hso10:05:132
2386999274,13cyclictest22346irq/40-dwc2_hso08:10:122
2386999273,16cyclictest22346irq/40-dwc2_hso12:00:112
2386999273,10cyclictest17230-21ssh11:55:122
23869992711,6cyclictest27-21ksoftirqd/210:15:132
2386199272,19cyclictest10946-21ssh10:55:481
2386199272,19cyclictest10946-21ssh10:55:481
23861992714,8cyclictest0-21swapper/110:40:141
23861992713,9cyclictest21-21ksoftirqd/110:20:121
2385399272,19cyclictest8641-21ssh10:37:480
2385399272,19cyclictest26000-21ssh10:46:480
2385399272,19cyclictest19402-21ssh10:44:480
2385399272,16cyclictest17246-21ssh11:55:130
2385399271,21cyclictest26818-21kworker/u8:210:00:120
2387799263,13cyclictest28366irq/58-eth009:15:123
2386999263,16cyclictest22346irq/40-dwc2_hso07:40:132
2386999263,16cyclictest0-21swapper/209:20:142
2386999262,9cyclictest0-21swapper/211:03:482
2386999262,9cyclictest0-21swapper/209:50:112
2386199262,19cyclictest26477-21sh09:55:121
2386199261,19cyclictest16029-21ssh10:25:141
2385399263,16cyclictest12-21ksoftirqd/011:20:100
2387799253,13cyclictest28366irq/58-eth010:10:113
2387799251,17cyclictest0-21swapper/309:30:483
2387799251,16cyclictest28366irq/58-eth007:40:133
2386999255,12cyclictest22346irq/40-dwc2_hso08:40:122
2386999255,12cyclictest22346irq/40-dwc2_hso08:40:122
2386999252,14cyclictest22346irq/40-dwc2_hso08:20:132
2386999251,14cyclictest18378-21basename11:20:012
2386199258,11cyclictest0-21swapper/107:30:121
2386199253,16cyclictest21-21ksoftirqd/111:35:131
2385399253,15cyclictest12-21ksoftirqd/012:05:110
2385399253,15cyclictest12-21ksoftirqd/012:05:110
2385399252,18cyclictest8102-21ssh11:50:130
23853992517,3cyclictest531-21usb-storage09:50:100
23853992516,5cyclictest14960-21ssh11:00:140
2385399251,16cyclictest839-21munin-node07:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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