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2025-12-04 - 10:07
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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 rackcslot8.osadl.org (updated Thu Dec 04, 2025 00:49:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11059942631,197cyclictest151rcu_preempt00:08:5317
111199343145,0cyclictest167-21ksoftirqd/2523:57:5318
9549924344,32cyclictest151rcu_preempt23:23:2127
11059922728,4cyclictest151rcu_preempt23:05:1817
100399174173,1cyclictest151rcu_preempt00:31:404
974991652,147cyclictest151rcu_preempt23:09:2330
9749915953,63cyclictest151rcu_preempt22:51:4030
9749915953,63cyclictest151rcu_preempt22:51:3930
974991540,95cyclictest0-21swapper/819:15:1230
9749915224,116cyclictest151rcu_preempt22:27:1130
9749915224,116cyclictest151rcu_preempt22:27:1030
9349915019,94cyclictest0-21swapper/220:27:1012
9349915018,82cyclictest0-21swapper/200:12:5912
9349915018,81cyclictest0-21swapper/223:15:2012
9349915018,81cyclictest0-21swapper/223:15:1912
9749914928,118cyclictest151rcu_preempt22:31:2330
9749914928,118cyclictest151rcu_preempt22:31:2230
9749914925,121cyclictest151rcu_preempt22:21:1730
9749914925,121cyclictest151rcu_preempt22:21:1730
9349914918,77cyclictest0-21swapper/223:28:1912
9749914758,65cyclictest151rcu_preempt00:10:1730
974991450,85cyclictest0-21swapper/822:38:1830
974991450,85cyclictest0-21swapper/822:38:1730
10249914550,94cyclictest0-21swapper/1621:39:398
10039914557,87cyclictest88-21ksoftirqd/1221:28:554
11569914452,59cyclictest0-21swapper/3100:21:2925
11279914250,58cyclictest0-21swapper/2723:38:0620
1066991420,90cyclictest0-21swapper/2121:26:0214
11429914146,57cyclictest0-21swapper/3023:07:4324
329891140132,6phc2sys0-21swapper/219:09:4212
11279914051,55cyclictest0-21swapper/2721:30:2420
10669914018,86cyclictest0-21swapper/2123:36:2014
9749913842,94cyclictest151rcu_preempt23:03:5630
9749913842,94cyclictest151rcu_preempt23:03:5630
9749913842,93cyclictest151rcu_preempt22:19:1930
9749913842,93cyclictest151rcu_preempt22:19:1930
9349913818,70cyclictest0-21swapper/200:38:3912
9749913714,120cyclictest151rcu_preempt21:49:4130
11429913720,83cyclictest0-21swapper/3023:17:5124
11429913720,83cyclictest0-21swapper/3023:17:5124
9349913618,54cyclictest0-21swapper/220:15:1112
11569913622,37cyclictest0-21swapper/3123:58:1725
11279913629,60cyclictest0-21swapper/2723:41:5220
1056991360,83cyclictest0-21swapper/2022:50:1513
1056991360,83cyclictest0-21swapper/2022:50:1413
9349913518,68cyclictest0-21swapper/223:10:1012
9349913518,68cyclictest0-21swapper/223:10:1012
11279913530,64cyclictest0-21swapper/2719:55:1820
11279913529,62cyclictest0-21swapper/2700:10:1320
11279913527,62cyclictest0-21swapper/2720:35:2220
11279913434,57cyclictest0-21swapper/2720:00:2420
11279913428,64cyclictest0-21swapper/2720:33:4720
10249913440,55cyclictest0-21swapper/1620:51:458
11279913341,66cyclictest0-21swapper/2721:35:1420
11279913329,63cyclictest0-21swapper/2723:52:5520
1024991330,87cyclictest0-21swapper/1619:25:018
11279913230,60cyclictest0-21swapper/2700:17:0920
1024991320,87cyclictest0-21swapper/1619:30:208
9349913117,87cyclictest0-21swapper/221:38:1512
9349913018,100cyclictest0-21swapper/219:15:2012
9349913016,84cyclictest0-21swapper/221:57:4712
11429913039,54cyclictest0-21swapper/3022:32:1124
11429913039,54cyclictest0-21swapper/3022:32:1124
1111991300,86cyclictest0-21swapper/2523:06:3418
11429912927,59cyclictest0-21swapper/3022:43:4024
11429912927,59cyclictest0-21swapper/3022:43:4024
11279912928,59cyclictest0-21swapper/2722:37:4520
11279912928,59cyclictest0-21swapper/2722:37:4420
1111991290,87cyclictest0-21swapper/2522:15:0218
1111991290,87cyclictest0-21swapper/2522:15:0118
1111991290,80cyclictest0-21swapper/2523:34:0718
9749912847,52cyclictest0-21swapper/819:26:0330
11279912827,59cyclictest0-21swapper/2722:45:1320
11279912827,59cyclictest0-21swapper/2722:45:1220
9869912714,50cyclictest28105-21taskset23:27:582
11279912728,60cyclictest0-21swapper/2723:11:4520
11279912728,60cyclictest0-21swapper/2723:11:4520
10569912748,51cyclictest0-21swapper/2023:36:5113
9749912634,64cyclictest0-21swapper/822:41:3730
9749912634,64cyclictest0-21swapper/822:41:3730
9349912618,70cyclictest0-21swapper/200:33:4912
9749912559,56cyclictest0-21swapper/800:22:3030
11569912526,66cyclictest0-21swapper/3121:24:3525
11429912527,57cyclictest0-21swapper/3021:47:0124
10569912545,53cyclictest0-21swapper/2021:34:5413
11569912429,90cyclictest0-21swapper/3100:05:2725
11569912427,66cyclictest0-21swapper/3119:10:2925
11569912427,65cyclictest0-21swapper/3121:50:1525
11569912425,68cyclictest0-21swapper/3121:42:4625
11429912426,59cyclictest0-21swapper/3000:26:5024
11279912427,59cyclictest0-21swapper/2720:05:2720
11279912427,58cyclictest0-21swapper/2700:05:2320
10569912426,64cyclictest0-21swapper/2021:23:4313
10249912448,4cyclictest0-21swapper/1622:04:468
9749912347,53cyclictest0-21swapper/823:25:0230
9749912318,78cyclictest0-21swapper/821:35:1530
289172123115,6sleep230-21swapper/2319:05:1816
11569912327,66cyclictest0-21swapper/3100:35:2325
11569912325,63cyclictest0-21swapper/3121:05:2125
11429912328,55cyclictest0-21swapper/3019:21:4124
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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