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2026-05-31 - 23:20

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 Sun May 31, 2026 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19122119910596,7cyclictest23-21ksoftirqd/110:50:021
191220599939,41cyclictest0-21swapper/011:45:020
191220599899,46cyclictest1958173-21latency_hist10:40:010
1912205998920,29cyclictest1922345-21ssh09:18:490
191220599851,62cyclictest0-21swapper/009:05:020
191220599809,41cyclictest0-21swapper/009:35:010
1912205997619,21cyclictest1915014-21munin-plugin-st08:05:000
191220599744,32cyclictest0-21swapper/011:34:590
1912205997420,28cyclictest0-21swapper/010:40:320
1912205997420,28cyclictest0-21swapper/010:40:320
1912205997413,22cyclictest1968685-21ssh11:04:050
1912205997413,22cyclictest1968685-21ssh11:04:040
1912205997323,13cyclictest1944812-21latency_hist10:10:010
191220599714,31cyclictest0-21swapper/011:30:020
191220599713,34cyclictest0-21swapper/010:28:380
1912205997119,19cyclictest1923484-21ssh09:21:150
1912205997033,34cyclictest1938134-21ssh09:54:470
1912205997019,18cyclictest1987523-21ssh11:46:230
1912205997019,18cyclictest1987523-21ssh11:46:230
1912205996850,13cyclictest3467602-21systemd-journal07:15:000
1912205996727,11cyclictest0-21swapper/010:59:540
191220599672,48cyclictest0-21swapper/011:38:140
191220599666,32cyclictest2009880-21rm12:37:160
1912205996531,30cyclictest1977274-21ssh11:23:200
1912205996524,23cyclictest1918392-21ssh09:10:010
1912205996524,23cyclictest1918392-21ssh09:10:010
1912205996518,15cyclictest0-21swapper/011:10:550
1912205996518,15cyclictest0-21swapper/011:10:550
1912205996516,14cyclictest2001808-21ssh12:19:120
1912205996510,19cyclictest1950460-21sh10:22:270
1912205996431,30cyclictest1933702-21ssh09:44:370
1912205996415,18cyclictest1996368-21ssh12:06:330
191220599632,52cyclictest0-21swapper/007:45:010
1912205996319,16cyclictest1954138-21sh10:30:470
1912205996319,16cyclictest1954138-21sh10:30:470
1912205996319,14cyclictest2003199-21ssh12:21:590
1912205996316,13cyclictest1936067-21sh09:50:000
1912205996316,13cyclictest1936067-21sh09:50:000
1912205996315,17cyclictest1964888-21sed10:55:020
1912219996138,18cyclictest1-21systemd10:05:003
1912219996111,6cyclictest131rcu_preempt10:25:053
1912205996116,14cyclictest1940726-21date10:00:030
1912205996110,12cyclictest1990128-21ssh11:52:270
191221999607,12cyclictest37-21ksoftirqd/309:20:013
191220599602,32cyclictest0-21swapper/012:04:250
191221999597,13cyclictest37-21ksoftirqd/309:55:023
1912215995948,7cyclictest1962698-21kworker/2:211:34:432
1912205995919,11cyclictest1946224-21ssh10:12:510
1912205995919,11cyclictest1946224-21ssh10:12:510
1912205995912,16cyclictest1916557-21latency_hist08:35:020
1912219995848,7cyclictest361rcuc/311:17:513
191221999583,11cyclictest37-21ksoftirqd/311:45:033
191220599584,22cyclictest0-21swapper/010:18:270
1912205995835,16cyclictest1-21systemd09:00:010
1912205995821,33cyclictest0-21swapper/011:08:580
1912205995815,39cyclictest1999885-21ssh12:14:480
1912205995815,39cyclictest1999885-21ssh12:14:480
191221999575,10cyclictest37-21ksoftirqd/311:30:013
1912219995716,6cyclictest131rcu_preempt11:55:003
1912215995748,5cyclictest1902691-21kworker/2:011:04:252
1912215995748,5cyclictest1902691-21kworker/2:011:04:252
1912205995714,13cyclictest2005340-21ssh12:26:570
1912219995617,6cyclictest131rcu_preempt12:20:003
1912219995610,4cyclictest131rcu_preempt11:56:463
1912215995646,6cyclictest1901656-21kworker/2:309:10:012
1912215995646,6cyclictest1901656-21kworker/2:309:10:002
1912215995638,14cyclictest275-21dbus-daemon08:50:012
1912205995620,32cyclictest1919873-21rm09:13:230
1912205995617,7cyclictest1940122-21ssh09:59:080
1912205995612,39cyclictest0-21swapper/009:30:030
191221999559,6cyclictest131rcu_preempt12:26:023
1912219995545,7cyclictest361rcuc/310:24:003
191221999553,13cyclictest37-21ksoftirqd/311:25:023
1912219995511,6cyclictest131rcu_preempt09:43:553
1912215995546,5cyclictest1902691-21kworker/2:010:28:222
1912215995546,5cyclictest1902691-21kworker/2:009:41:232
1912215995540,7cyclictest1901656-21kworker/2:309:05:012
1912205995535,17cyclictest48-21kcompactd008:45:060
191221999544,9cyclictest37-21ksoftirqd/310:38:343
1912219995413,5cyclictest131rcu_preempt09:22:353
1912219995411,10cyclictest37-21ksoftirqd/309:40:003
1912215995446,5cyclictest1902691-21kworker/2:011:41:012
1912215995444,6cyclictest1931666-21kworker/2:110:08:092
1912215995443,7cyclictest1902691-21kworker/2:012:13:312
1912215995443,7cyclictest1902691-21kworker/2:012:13:312
1912215995442,5cyclictest1902691-21kworker/2:009:48:162
1912215995442,5cyclictest1902691-21kworker/2:009:48:162
1912211995437,13cyclictest1-21systemd08:00:001
1912205995436,13cyclictest1913673-21sshd07:38:340
1912205995436,13cyclictest1913673-21sshd07:38:330
1912205995419,31cyclictest1960732-21sh10:45:320
1912205995414,13cyclictest1992156-21ssh11:57:020
191221999538,10cyclictest37-21ksoftirqd/311:35:343
191221999531,7cyclictest1918124-21grep09:05:003
1912219995314,5cyclictest131rcu_preempt08:10:013
1912215995345,5cyclictest1902691-21kworker/2:011:56:492
1912215995345,5cyclictest1902691-21kworker/2:009:35:012
1912215995345,5cyclictest1902691-21kworker/2:009:20:012
1912215995344,6cyclictest1902691-21kworker/2:012:08:332
1912215995344,5cyclictest1931666-21kworker/2:110:15:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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