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2026-06-26 - 00:19

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 Jun 25, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8755998816,17cyclictest131rcu_preempt11:55:132
8766996756,5cyclictest35966irq/58-eth012:15:133
8755996045,10cyclictest26827-21diskmemload12:15:132
874699607,37cyclictest22143-21ssh09:25:141
8766995637,12cyclictest35966irq/58-eth012:10:123
8766995637,12cyclictest35966irq/58-eth012:10:113
8755995614,33cyclictest27-21ksoftirqd/210:15:132
8766995327,16cyclictest35966irq/58-eth011:05:113
8766995033,11cyclictest35966irq/58-eth009:50:133
874699501,13cyclictest24675-21apt-get08:00:121
875599461,35cyclictest489-21ssh11:00:132
874699469,29cyclictest11167-21ssh12:35:131
8755994515,13cyclictest27-21ksoftirqd/208:30:122
8746994415,22cyclictest21-21ksoftirqd/111:20:121
874699434,32cyclictest5637-21sh10:45:141
874699433,32cyclictest13533-21ssh11:25:131
874699431,14cyclictest12426-21ssh12:00:121
874699430,7cyclictest11951-21ssh09:55:131
873899434,6cyclictest131rcu_preempt08:40:120
874699411,6cyclictest13000-21ssh09:20:121
873899412,36cyclictest9646-21ssh11:05:110
873899403,32cyclictest1808-21sh10:25:120
873899401,31cyclictest2114-21ssh12:30:100
873899392,32cyclictest30550-21sshd12:10:110
873899392,32cyclictest30550-21sshd12:10:100
873899391,26cyclictest18747-21ssh11:10:120
8755993811,9cyclictest27-21ksoftirqd/210:40:122
874699389,25cyclictest0-21swapper/109:45:131
876699371,24cyclictest35966irq/58-eth011:10:133
876699371,19cyclictest35966irq/58-eth009:45:123
875599374,23cyclictest0-21swapper/211:25:132
875599372,17cyclictest131rcu_preempt12:33:112
874699376,26cyclictest0-21swapper/110:40:121
874699373,9cyclictest17513-21/usr/sbin/munin11:45:231
874699371,12cyclictest19660-21ntp_states10:15:261
8766993624,5cyclictest35966irq/58-eth012:30:123
875599362,18cyclictest26676-21ssh11:50:152
874699364,18cyclictest21-21ksoftirqd/112:05:141
874699363,9cyclictest31347-21kthreadcore08:05:201
874699363,26cyclictest27216-21ssh09:10:111
874699361,9cyclictest978-21sed07:35:161
874699352,9cyclictest22399-21grep09:05:151
874699351,9cyclictest8108-21cat11:40:021
874699351,9cyclictest4364-21cut12:30:201
874699351,9cyclictest16337-21kthreadcore10:50:201
874699351,9cyclictest16337-21kthreadcore10:50:191
874699351,8cyclictest3114-21ssh10:25:191
874699351,8cyclictest1639-21ls10:05:261
874699351,25cyclictest8403-21ssh11:40:121
874699351,10cyclictest18069-21sed09:00:171
874699351,10cyclictest1645-21kthreadcore11:00:191
874699350,9cyclictest8748-21cut08:50:191
875599344,22cyclictest0-21swapper/209:55:142
875599343,19cyclictest30549-21ssh12:10:112
875599343,19cyclictest30549-21ssh12:10:102
8755993411,13cyclictest0-21swapper/207:25:142
8746993420,9cyclictest8730-21cyclictest11:15:121
874699341,9cyclictest6978-21if_eth108:15:181
874699341,9cyclictest31340-21kthreadcore08:40:201
874699341,9cyclictest29527-21grep12:25:291
874699341,9cyclictest29527-21grep12:25:291
874699341,9cyclictest29332-21kthreadcore11:50:221
874699341,9cyclictest21551-21kthreadcore10:35:191
874699341,9cyclictest19932-21df_inode07:55:151
874699341,9cyclictest19719-21kthreadcore07:20:191
874699341,9cyclictest18863-21df11:10:141
874699341,9cyclictest18300-21apt-config07:20:021
874699341,9cyclictest17925-21tr08:25:211
874699341,9cyclictest16210-21latency_hist12:20:011
874699341,9cyclictest10334-21kthreadcore07:10:211
874699341,8cyclictest28330-21tr08:35:201
875599332,23cyclictest10919-21ssh10:30:142
875599331,17cyclictest9662-21sshd11:05:122
874699332,22cyclictest22736-21ssh11:30:131
874699332,10cyclictest22609-21tr10:00:201
874699331,9cyclictest5825-21cut09:15:211
874699331,9cyclictest30653-21ssh12:10:131
874699331,9cyclictest30653-21ssh12:10:131
874699331,8cyclictest7212-21wc11:55:271
874699331,8cyclictest31570-21irqcore09:30:171
874699331,8cyclictest25406-21kthreadcore07:25:201
874699331,8cyclictest17548-21kthreadcore12:20:191
874699331,8cyclictest12926-21kthreadcore08:20:181
874699331,7cyclictest7789-21/usr/sbin/munin09:35:121
874699331,7cyclictest27406-21wc10:55:241
874699331,6cyclictest16151-21proc_pri08:55:271
874699330,9cyclictest2533-21kernelversion08:10:191
874699330,10cyclictest6877-21kthreadcore07:40:201
873899332,25cyclictest28184-21sd-accept07:30:120
875599326,16cyclictest27346irq/40-dwc2_hso11:35:132
875599325,16cyclictest27346irq/40-dwc2_hso08:20:122
875599321,24cyclictest1826-21ssh10:25:132
875599321,20cyclictest27346irq/40-dwc2_hso12:25:122
875599321,20cyclictest27346irq/40-dwc2_hso12:25:122
874699321,9cyclictest6359-21ntp_192.168.11409:50:251
874699321,9cyclictest31632-21ntp_states07:30:251
874699321,8cyclictest23692-21kthreadcore08:30:201
874699321,8cyclictest14759-21dpkg07:50:021
874699321,7cyclictest5662-21kthreadcore08:45:201
874699320,9cyclictest15284-21idleruntime07:50:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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