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2026-07-28 - 03:06
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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 rackbslot7.osadl.org (updated Tue Jul 28, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24313218050,22sleep224299-21apt-get18:51:312
2538421247,19sleep10-21swapper/118:53:101
258609910625,43cyclictest0-21swapper/222:42:392
258609910625,43cyclictest0-21swapper/222:42:392
258609910532,36cyclictest0-21swapper/223:06:082
258609910532,36cyclictest0-21swapper/223:06:082
54321040,6sleep20-21swapper/220:56:102
258389910480,18cyclictest298-21in:imuxsock23:44:100
258389910480,18cyclictest298-21in:imuxsock23:44:100
258609910050,40cyclictest0-21swapper/221:26:422
25380210015,57sleep024279-21/usr/sbin/munin18:53:090
25860999840,47cyclictest13519-21/usr/sbin/munin19:56:302
55692970,28sleep1291rcuc/122:51:411
25860999768,20cyclictest19260-21sh00:09:102
25860999768,20cyclictest19260-21sh00:09:102
2586099973,77cyclictest0-21swapper/223:31:192
25860999650,39cyclictest28914-21sh00:26:062
2586099963,76cyclictest0-21swapper/219:51:232
25860999524,31cyclictest0-21swapper/222:08:262
25845999469,19cyclictest27123-21sh00:21:431
25838999436,30cyclictest181rcu_preempt22:21:290
2586099924,77cyclictest0-21swapper/221:21:232
25860999247,37cyclictest21398-21cron21:31:112
25860999247,37cyclictest21398-21cron21:31:112
2586099923,57cyclictest0-21swapper/223:37:312
2586099893,74cyclictest0-21swapper/219:21:242
25845998868,14cyclictest25493-21ssh00:19:541
25845998868,14cyclictest25493-21ssh00:19:541
2586099874,76cyclictest0-21swapper/221:06:232
2586099872,72cyclictest0-21swapper/219:11:232
2586099872,72cyclictest0-21swapper/219:11:232
2586099872,61cyclictest26736-21runrttasks20:36:492
25845998753,16cyclictest181rcu_preempt23:17:081
25838998760,7cyclictest181rcu_preempt23:53:440
2583899874,37cyclictest15-21ksoftirqd/019:16:190
25860998638,40cyclictest0-21swapper/223:11:352
25860998638,40cyclictest0-21swapper/223:11:352
25838998661,18cyclictest1-21systemd22:18:240
25838998661,18cyclictest1-21systemd22:18:240
25860998558,19cyclictest12709-21sh21:16:162
25860998547,30cyclictest0-21swapper/222:16:332
25860998547,30cyclictest0-21swapper/222:16:332
2586099853,75cyclictest22263-21ssh22:26:232
2586099853,75cyclictest22263-21ssh22:26:232
25845998561,18cyclictest436-21diskmemload21:22:261
25845998536,27cyclictest25819-21cyclictest22:47:531
25838998562,15cyclictest2374-21systemd-journal21:39:240
25838998547,7cyclictest181rcu_preempt22:58:500
25845998464,13cyclictest3425-21kworker/u17:3-rpciod23:56:111
25845998419,38cyclictest4607-21switchtime19:26:431
25838998463,8cyclictest181rcu_preempt20:59:180
25838998457,17cyclictest2374-21systemd-journal21:51:070
25838998456,19cyclictest23588-21kernelversion20:26:330
25838998442,12cyclictest181rcu_preempt19:31:350
2586099833,68cyclictest0-21swapper/220:21:212
25845998363,12cyclictest0-21swapper/121:51:441
25845998363,12cyclictest0-21swapper/121:51:441
25845998362,10cyclictest0-21swapper/120:37:271
25845998360,12cyclictest0-21swapper/119:51:101
25845998354,8cyclictest181rcu_preempt22:36:441
25838998367,10cyclictest16609-21timerandwakeup21:21:430
2583899836,50cyclictest15-21ksoftirqd/023:26:220
25838998361,17cyclictest25819-21cyclictest22:06:080
25838998361,17cyclictest25819-21cyclictest22:06:080
25838998361,15cyclictest25819-21cyclictest21:06:440
25838998358,10cyclictest181rcu_preempt21:56:420
25838998350,12cyclictest181rcu_preempt00:19:370
25838998350,12cyclictest181rcu_preempt00:19:370
25838998350,10cyclictest181rcu_preempt22:36:450
25838998345,11cyclictest58-21kcompactd022:06:140
2586099829,51cyclictest0-21swapper/223:47:392
2586099824,67cyclictest0-21swapper/220:16:222
25860998242,34cyclictest436-21diskmemload00:16:252
25860998242,34cyclictest436-21diskmemload00:16:252
25860998233,42cyclictest0-21swapper/222:46:422
25845998261,11cyclictest0-21swapper/122:01:111
25838998234,11cyclictest181rcu_preempt23:11:320
25838998234,11cyclictest181rcu_preempt23:11:320
2586099814,57cyclictest0-21swapper/200:14:402
25860998141,33cyclictest0-21swapper/222:26:062
25860998137,36cyclictest0-21swapper/222:36:442
2586099813,70cyclictest0-21swapper/221:01:242
25845998160,14cyclictest26284-21sh23:26:391
25845998160,12cyclictest0-21swapper/100:08:401
25845998160,12cyclictest0-21swapper/100:08:401
25845998160,11cyclictest0-21swapper/123:41:091
25838998137,24cyclictest181rcu_preempt23:16:340
25860998043,30cyclictest0-21swapper/223:56:092
25860998039,32cyclictest0-21swapper/218:57:222
2586099803,71cyclictest0-21swapper/221:51:222
2586099803,71cyclictest0-21swapper/221:51:222
2586099803,63cyclictest0-21swapper/219:06:182
2586099803,63cyclictest0-21swapper/219:06:182
25860998035,38cyclictest0-21swapper/223:21:282
25860998035,38cyclictest0-21swapper/223:21:282
25860998032,40cyclictest0-21swapper/223:56:422
25860998013,56cyclictest23220-21cat20:26:172
25845998066,7cyclictest0-21swapper/120:21:431
25845998062,9cyclictest0-21swapper/121:36:331
25845998060,11cyclictest0-21swapper/119:36:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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