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2026-06-11 - 14:39

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 11, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24334996155,4cyclictest35966irq/58-eth009:55:113
24334995744,7cyclictest35966irq/58-eth010:10:133
24334995436,10cyclictest35966irq/58-eth009:50:123
2433499503,36cyclictest35966irq/58-eth012:15:123
24334994738,6cyclictest35966irq/58-eth012:30:123
2433499435,23cyclictest35966irq/58-eth009:30:103
2433499433,25cyclictest35966irq/58-eth008:55:113
2433499372,20cyclictest35966irq/58-eth007:25:123
24334993623,8cyclictest35966irq/58-eth009:10:123
24334993618,11cyclictest35966irq/58-eth010:15:123
2433499360,20cyclictest35966irq/58-eth012:10:133
2433499336,17cyclictest0-21swapper/311:20:133
24334993314,9cyclictest0-21swapper/310:40:153
2431799330,26cyclictest28894-21ssh10:50:121
2433499323,21cyclictest0-21swapper/311:30:213
2431799321,23cyclictest5297-21ssh11:10:451
2433499316,11cyclictest0-21swapper/310:55:123
2433499316,11cyclictest0-21swapper/310:55:123
2433499312,14cyclictest35966irq/58-eth010:00:133
2431799311,21cyclictest25660-21ssh12:00:131
2431799310,19cyclictest0-21swapper/109:05:141
2430999312,22cyclictest7281-21ssh10:20:130
2433499292,17cyclictest35966irq/58-eth010:20:133
2431799291,21cyclictest15376-21kthreadcore11:35:211
2433499286,13cyclictest0-21swapper/311:10:133
2433499284,17cyclictest0-21swapper/309:45:133
2433499283,20cyclictest33-21ksoftirqd/312:35:133
2433499283,17cyclictest0-21swapper/312:09:213
2433499278,9cyclictest0-21swapper/310:30:133
2433499278,9cyclictest0-21swapper/310:30:133
2433499273,16cyclictest0-21swapper/312:28:213
2433499273,16cyclictest0-21swapper/312:28:213
2431799271,19cyclictest15849-21ssh10:40:371
24309992720,4cyclictest1917-21sh10:35:140
2433499266,10cyclictest35966irq/58-eth012:00:123
24334992610,8cyclictest0-21swapper/310:50:213
2432699261,7cyclictest2206366ssh10:45:202
2431799261,19cyclictest11494-21ssh12:26:211
2431799261,19cyclictest11494-21ssh12:26:211
2430999263,18cyclictest28882-21ssh10:50:110
2433499251,16cyclictest0-21swapper/311:50:123
2433499243,13cyclictest0-21swapper/311:40:213
2433499243,12cyclictest0-21swapper/310:25:133
2433499242,14cyclictest0-21swapper/308:10:123
2433499241,15cyclictest35966irq/58-eth007:50:153
2432699241,9cyclictest250866ssh09:22:152
24326992413,3cyclictest0-21swapper/209:30:112
2432699241,16cyclictest29736-21kthreadcore08:20:212
2432699241,16cyclictest24243-21kthreadcore09:35:202
2432699241,15cyclictest31262-21kthreadcore07:15:202
2432699240,9cyclictest131rcu_preempt12:05:152
2431799240,14cyclictest10097-21diskmemload10:15:181
24309992414,3cyclictest12-21ksoftirqd/012:05:190
24326992318,3cyclictest27-21ksoftirqd/212:35:132
2432699231,5cyclictest0-21swapper/211:01:472
2432699231,14cyclictest13838-21kthreadcore07:30:202
2431799231,15cyclictest18252-21ssh11:20:111
2430999231,7cyclictest15359-21kthreadcore11:35:210
2430999231,5cyclictest29253-21ntp_192.168.11412:00:240
2433499224,11cyclictest0-21swapper/311:55:113
2433499221,13cyclictest35966irq/58-eth008:20:133
2432699227,11cyclictest27688-21tail11:25:172
2432699222,5cyclictest27-21ksoftirqd/212:02:052
2432699222,4cyclictest27-21ksoftirqd/210:39:212
2432699222,17cyclictest23588-21grep12:35:022
2432699222,13cyclictest24265-21irqrtprio11:05:192
2432699222,12cyclictest16260-21sh10:05:252
2432699221,14cyclictest3511-21kthreadcore07:20:182
2432699221,13cyclictest11188-21ssh12:10:022
24326992210,5cyclictest20698-21sshd07:39:192
2431799225,11cyclictest21-21ksoftirqd/111:00:141
2431799221,15cyclictest6813-21cut11:30:211
2430999225,14cyclictest7618-21ssh11:50:120
2433499213,12cyclictest0-21swapper/310:45:483
24334992112,4cyclictest0-21swapper/309:25:143
2432699218,6cyclictest28102-21cron08:55:012
2432699214,10cyclictest87766lldpd08:41:402
2432699212,4cyclictest27-21ksoftirqd/212:16:002
2432699212,4cyclictest27-21ksoftirqd/210:42:182
2432699212,15cyclictest8961-21ssh09:45:132
2432699212,12cyclictest2888-21kthreadcore09:40:222
2432699211,18cyclictest2745-21cron07:55:002
2432699211,17cyclictest1877-21awk10:15:252
24326992110,3cyclictest16754-21grep11:55:142
2432699210,3cyclictest0-21swapper/209:11:552
2432699210,19cyclictest11106-21kthreadcore08:00:222
2431799216,10cyclictest30170-21ssh10:30:351
2431799216,10cyclictest30170-21ssh10:30:351
2431799211,15cyclictest22034-21ssh11:40:121
2431799211,14cyclictest30821-21memory11:25:211
2431799211,14cyclictest11179-21/usr/sbin/munin11:50:211
2431799211,13cyclictest23716-21kthreadcore12:15:221
2431799211,12cyclictest10097-21diskmemload11:07:241
2431799211,11cyclictest0-21swapper/110:25:121
2430999219,3cyclictest12-21ksoftirqd/010:45:200
2430999217,3cyclictest131rcu_preempt07:55:010
2430999213,15cyclictest23934-21ssh12:35:140
2430999211,16cyclictest20965-21apt-get07:40:110
2433499202,12cyclictest35966irq/58-eth011:05:133
24334992012,4cyclictest0-21swapper/310:05:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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