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2026-05-06 - 19:45

OSADL QA Farm on Real-time of Mainline Linux

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

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 rack7slot7s.osadl.org (updated Wed May 06, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
415929668,8sleep30-21swapper/307:05:043
618829482,8sleep00-21swapper/007:08:400
603329077,9sleep20-21swapper/207:06:402
610028467,13sleep10-21swapper/107:07:321
6382993330,1cyclictest32759-21kworker/3:112:18:423
6382993324,8cyclictest30436-21kworker/3:011:50:423
6382992825,2cyclictest22713-21kworker/3:212:39:033
636999260,26cyclictest0-21swapper/010:36:510
638299231,21cyclictest30436-21kworker/3:012:00:433
638299230,22cyclictest32759-21kworker/3:112:13:433
637999222,2cyclictest141rcu_preempt09:36:132
636999222,19cyclictest0-21swapper/010:58:260
637599211,4cyclictest0-21swapper/111:48:331
637599211,4cyclictest0-21swapper/111:48:331
637599210,21cyclictest0-21swapper/112:18:101
6382992017,1cyclictest30436-21kworker/3:010:10:073
638299200,1cyclictest0-21swapper/309:49:543
637599200,18cyclictest0-21swapper/111:16:111
636999207,7cyclictest24956-21munin-run09:25:000
636999207,12cyclictest13-21ksoftirqd/009:15:140
6382991917,1cyclictest2343-21kworker/3:310:05:063
6382991917,1cyclictest0-21swapper/310:30:133
6382991915,1cyclictest30436-21kworker/3:010:21:443
6382991817,1cyclictest30436-21kworker/3:010:18:383
638299180,16cyclictest0-21swapper/312:32:593
638299180,14cyclictest0-21swapper/311:55:123
6375991817,1cyclictest0-21swapper/111:31:121
637599181,4cyclictest225-21systemd-journal09:30:011
637599180,1cyclictest0-21swapper/109:14:321
636999186,6cyclictest21332-21munin-run10:20:010
6382991716,1cyclictest0-21swapper/309:11:553
6382991714,2cyclictest19635-21apt-config10:00:003
6382991714,2cyclictest1089-21apache210:53:513
6382991714,1cyclictest2343-21kworker/3:310:03:273
638299170,1cyclictest0-21swapper/311:01:483
637599172,2cyclictest0-21swapper/107:50:121
637599171,15cyclictest31771-21diskmemload09:16:121
638299160,9cyclictest0-21swapper/309:05:203
638299160,9cyclictest0-21swapper/309:05:193
637999164,8cyclictest0-21swapper/211:21:042
6379991614,1cyclictest0-21swapper/208:50:162
636999160,1cyclictest0-21swapper/010:29:510
636999160,1cyclictest0-21swapper/010:13:020
636999160,16cyclictest0-21swapper/012:08:520
636999160,15cyclictest0-21swapper/009:59:260
638299152,12cyclictest19273-21python11:15:243
638299150,15cyclictest0-21swapper/312:08:403
637999156,4cyclictest5116-21apt-get12:05:122
637999154,8cyclictest31771-21diskmemload12:26:492
6379991513,2cyclictest32-21ksoftirqd/210:57:422
637999150,4cyclictest0-21swapper/211:43:062
637599157,6cyclictest21534-21cat10:20:011
637599152,7cyclictest10597-21seq11:30:001
6375991514,1cyclictest0-21swapper/110:08:481
637599150,2cyclictest0-21swapper/110:52:481
636999157,7cyclictest20137-21munin-run11:55:010
636999154,3cyclictest225-21systemd-journal08:05:450
6369991513,1cyclictest0-21swapper/011:32:390
636999150,0cyclictest0-21swapper/010:33:010
638299149,5cyclictest1104-21apache212:21:283
6382991410,2cyclictest15643-21head10:35:173
638299140,1cyclictest0-21swapper/310:28:503
638299140,1cyclictest0-21swapper/309:38:283
638299140,13cyclictest4022-21head08:10:153
637999149,4cyclictest23194-21if_err_enp0s31f12:15:182
6379991410,3cyclictest31749-21cut10:25:202
6379991410,3cyclictest1750-21sed08:05:182
6379991410,3cyclictest11666-21tr07:20:152
6379991410,2cyclictest31645-21cat12:40:012
6379991410,2cyclictest0-21swapper/212:13:582
637599149,4cyclictest537-21snmpd10:44:331
637599149,4cyclictest537-21snmpd10:44:331
637599147,4cyclictest0-21swapper/110:35:151
637599146,5cyclictest24601-21cron08:55:001
637599143,1cyclictest141rcu_preempt11:24:101
6375991412,2cyclictest0-21swapper/109:55:201
6375991410,3cyclictest12942-21ssh10:15:001
637599140,1cyclictest28865-21sed09:45:251
6369991410,3cyclictest29478-21df10:05:140
6369991410,3cyclictest23300-21wc07:45:000
638299139,3cyclictest11365-21sed08:25:163
6382991310,2cyclictest7939-21cron08:19:593
6382991310,2cyclictest26475-21idleruntime-cro09:44:593
6382991310,2cyclictest21850-21grep07:40:173
6382991310,2cyclictest15461-21cut08:35:143
638299130,12cyclictest0-21swapper/311:49:453
638299130,12cyclictest0-21swapper/311:49:443
637999139,3cyclictest27199-21sh11:40:002
637999139,3cyclictest26977-21uname07:50:192
637999139,3cyclictest25623-21perf11:20:002
637999139,3cyclictest23339-21wc07:45:002
637999139,2cyclictest5570-21dpkg08:15:002
637999134,7cyclictest21801-21/usr/sbin/munin10:20:142
6379991310,2cyclictest9756-21sed07:15:182
6379991310,2cyclictest4606-21cron12:05:012
6379991310,2cyclictest28365-21cat10:05:012
6379991310,2cyclictest25566-21tune2fs08:55:172
6379991310,2cyclictest16627-21grep07:30:152
6379991310,2cyclictest15184-21grep12:30:122
637999130,6cyclictest0-21swapper/209:33:452
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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