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2026-07-10 - 16:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Fri Jul 10, 2026 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2154884999629,12cyclictest2169374-21ssh09:27:150
2154884998718,59cyclictest16850irq/134-800000011:06:200
2154884998616,60cyclictest16850irq/134-800000012:10:520
2154884998528,12cyclictest3467602-21systemd-journal09:19:560
2154884998480,2cyclictest0-21swapper/010:55:020
2154884998480,2cyclictest0-21swapper/010:55:020
2154884998336,44cyclictest16950irq/224-800000012:35:000
215488499832,37cyclictest2246490-21ssh12:09:210
215488499832,37cyclictest2246490-21ssh12:09:210
2154884998129,13cyclictest2251077-21ssh12:18:570
2154884998025,13cyclictest2243171-21ssh12:02:050
2154884998024,13cyclictest2192869-21ssh10:16:250
2154884997924,16cyclictest2190143-21ssh10:10:390
2154884997924,12cyclictest2229654-21ssh11:33:590
215488499791,44cyclictest2208791-21ssh10:50:000
2154884997718,31cyclictest3467602-21systemd-journal12:24:410
2154884997717,54cyclictest16850irq/134-800000010:35:200
2154884997628,14cyclictest2254591-21ssh12:25:570
2154884997618,53cyclictest16850irq/134-800000009:53:410
2154884997524,16cyclictest2226459-21ssh11:27:110
215488499752,36cyclictest311-21rs:main0
2154884997518,6cyclictest16850irq/134-800000011:54:320
2154884997419,50cyclictest16850irq/134-800000009:22:510
2154884997418,51cyclictest16850irq/134-800000010:06:190
215488499741,35cyclictest2195363-21ssh10:21:330
2154884997328,12cyclictest2184610-21ssh09:59:260
2154884997328,12cyclictest2184610-21ssh09:59:260
2154884997317,51cyclictest16850irq/134-800000010:04:350
2154884997316,52cyclictest16850irq/134-800000009:38:040
2154884997316,52cyclictest16850irq/134-800000009:38:040
2154884997315,6cyclictest16850irq/134-800000011:18:090
2154884997218,48cyclictest16850irq/134-800000009:33:580
2154884997217,50cyclictest16850irq/134-800000011:55:300
2154884997217,50cyclictest16850irq/134-800000011:55:300
215488499721,28cyclictest0-21swapper/009:47:120
215488999707,54cyclictest2175409-21ssh09:40:021
215488999707,54cyclictest2175409-21ssh09:40:021
2154884997017,48cyclictest16850irq/134-800000010:40:180
2154884997012,17cyclictest16850irq/134-800000010:25:570
2154894996922,7cyclictest30-21ksoftirqd/210:18:562
2154884996917,6cyclictest16850irq/134-800000010:33:310
215488499682,14cyclictest2219935-21sshd11:13:240
215488499682,14cyclictest2219935-21sshd11:13:240
2154884996815,49cyclictest16850irq/134-800000009:44:550
2154884996814,49cyclictest16850irq/134-800000011:02:150
2154884996814,49cyclictest16850irq/134-800000011:02:150
2154898996618,9cyclictest37-21ksoftirqd/309:50:023
2154894996624,5cyclictest2244258-21sh12:04:442
2154884996619,7cyclictest16850irq/134-800000011:21:350
2154884996615,46cyclictest16850irq/134-800000011:48:310
2154898996511,9cyclictest37-21ksoftirqd/311:30:003
2154894996529,33cyclictest30-21ksoftirqd/209:15:012
2154894996425,6cyclictest2211833-21sh10:56:052
215488499648,17cyclictest16850irq/134-800000010:59:270
2154898996218,10cyclictest37-21ksoftirqd/312:10:213
2154898996214,8cyclictest37-21ksoftirqd/310:10:013
2154894996228,7cyclictest30-21ksoftirqd/211:30:482
2154898996116,11cyclictest37-21ksoftirqd/309:40:013
2154898996116,11cyclictest37-21ksoftirqd/309:40:013
2154898996115,6cyclictest37-21ksoftirqd/308:20:003
2154898996110,12cyclictest37-21ksoftirqd/309:21:193
2154894996123,7cyclictest30-21ksoftirqd/210:34:282
2154894996123,6cyclictest2154633-21kworker/u8:307:45:012
2154894996123,6cyclictest2154633-21kworker/u8:307:45:002
2154894996121,9cyclictest30-21ksoftirqd/212:20:012
215489499611,6cyclictest131rcu_preempt12:10:012
215489499611,6cyclictest131rcu_preempt12:10:012
215488499616,37cyclictest19350irq/34-mmc108:40:020
2154884996140,17cyclictest16850irq/134-800000011:40:010
215489899608,14cyclictest37-21ksoftirqd/309:34:483
2154894996027,8cyclictest30-21ksoftirqd/210:10:282
2154894996024,7cyclictest2155634-21sshd07:22:252
2154894996024,4cyclictest2182046-21sh09:54:012
2154894996023,6cyclictest2158239-21modprobe08:15:002
2154884996014,41cyclictest1-21systemd07:25:010
2154898995915,9cyclictest37-21ksoftirqd/311:55:013
2154894995940,15cyclictest3467602-21systemd-journal08:35:002
2154894995940,15cyclictest3467602-21systemd-journal08:35:002
2154894995924,7cyclictest30-21ksoftirqd/211:51:132
215489499592,25cyclictest2177758-21munin-run09:45:002
2154894995916,10cyclictest3467602-21systemd-journal10:55:012
2154894995916,10cyclictest3467602-21systemd-journal10:55:012
215489899588,12cyclictest37-21ksoftirqd/308:35:033
215489899588,12cyclictest37-21ksoftirqd/308:35:033
2154898995815,9cyclictest37-21ksoftirqd/310:35:013
2154889995838,15cyclictest1-21systemd08:50:011
215488999583,45cyclictest275-21dbus-daemon11:10:001
215488499586,20cyclictest2154883-21wc07:10:010
215489899579,11cyclictest37-21ksoftirqd/309:28:593
2154894995719,10cyclictest30-21ksoftirqd/212:30:462
215488999577,26cyclictest0-21swapper/110:00:031
2154889995734,17cyclictest275-21dbus-daemon07:40:001
215488499574,3cyclictest131rcu_preempt08:35:010
215488499574,3cyclictest131rcu_preempt08:35:010
2154898995612,9cyclictest37-21ksoftirqd/310:15:013
2154898995610,11cyclictest37-21ksoftirqd/307:40:003
2154894995626,11cyclictest2156974-21kworker/2:111:39:522
2154894995625,7cyclictest30-21ksoftirqd/209:57:592
2154894995625,7cyclictest30-21ksoftirqd/209:57:592
2154894995622,5cyclictest2219375-21sh11:12:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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