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2026-04-17 - 23:46
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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
Characteristics of the 50 highest latencies:
System rackcslot0.osadl.org (updated Fri Apr 17, 2026 00:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277522140116,20sleep50-21swapper/519:07:2511
1433721370,5sleep152859199cyclictest21:26:367
279422135120,11sleep130-21swapper/1319:09:575
28016211894,18sleep110-21swapper/1119:10:593
279302115102,8sleep10-21swapper/119:09:451
27855211194,13sleep00-21swapper/019:08:400
27846211092,11sleep100-21swapper/1019:08:342
27777210982,23sleep120-21swapper/1219:07:484
369321030,2sleep558-21ksoftirqd/523:14:2911
427421020,0sleep60-21swapper/600:38:4612
1384621000,1sleep140-21swapper/1422:41:136
90202990,1sleep60-21swapper/623:32:1012
90202990,1sleep60-21swapper/623:32:1012
4192990,1sleep10-21swapper/100:09:151
25682990,1sleep10971ktimersoftd/1023:45:362
25682990,1sleep10971ktimersoftd/1023:45:362
322242980,1sleep50-21swapper/522:08:5811
81912970,0sleep100-21swapper/1000:10:122
307912970,1sleep10-21swapper/123:48:241
64262960,7sleep449-21ksoftirqd/421:42:2810
163372960,7sleep42857799cyclictest23:05:3910
135842960,1sleep00-21swapper/023:53:270
279392950,1sleep40-21swapper/423:51:3910
228042950,1sleep110-21swapper/1100:08:053
84192930,1sleep00-21swapper/022:20:230
202552930,1sleep50-21swapper/521:50:4711
195692930,1sleep40-21swapper/423:19:3310
310492920,1sleep120-21swapper/1221:38:034
2775029282,6sleep30-21swapper/319:07:239
265242920,6sleep32857699cyclictest21:44:529
114422920,1sleep110-21swapper/1122:03:433
171322910,1sleep100-21swapper/1023:12:262
117062910,0sleep5561rcuc/523:36:0911
117062910,0sleep5561rcuc/523:36:0911
307492900,4sleep142859099cyclictest21:34:536
296932900,2sleep929692-21sshd23:31:0815
296932900,2sleep929692-21sshd23:31:0815
211732900,2sleep921171-21rm22:04:4515
180582900,1sleep50-21swapper/521:40:2111
2783628972,6sleep40-21swapper/419:08:2810
254232890,0sleep00-21swapper/023:37:250
254232890,0sleep00-21swapper/023:37:250
24482890,7sleep102858599cyclictest00:31:522
79832880,1sleep137980-21sshd22:20:205
265522880,1sleep60-21swapper/623:23:5212
265522880,1sleep60-21swapper/623:23:5212
259452880,0sleep20-21swapper/223:23:488
259452880,0sleep20-21swapper/223:23:488
20962880,1sleep130-21swapper/1300:09:275
150592880,1sleep3401ktimersoftd/321:53:259
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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