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2026-08-27 - 03:46
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackcslot8.osadl.org (updated Thu Aug 27, 2026 00:49:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913440,68ptp4l0-21swapper/119:05:161
1232999332134,197cyclictest151rcu_preempt22:10:1719
1229399304105,22cyclictest151rcu_preempt23:59:3015
12347991973,19cyclictest151rcu_preempt00:38:0121
123229917232,139cyclictest0-21swapper/2523:32:5018
123229917132,103cyclictest0-21swapper/2500:02:1418
123229917029,140cyclictest0-21swapper/2521:47:3318
123229916931,99cyclictest0-21swapper/2522:40:5918
123229915842,71cyclictest0-21swapper/2521:17:5918
123229915829,74cyclictest0-21swapper/2521:57:4218
122809915629,99cyclictest0-21swapper/2019:10:1113
330891154146,6phc2sys0-21swapper/219:05:1512
122809915030,117cyclictest151rcu_preempt21:10:5713
122809915030,117cyclictest151rcu_preempt21:10:5713
121879915080,69cyclictest21356-21cpuspeed_turbos19:15:120
122659914542,101cyclictest118-21ksoftirqd/1723:41:149
12356991430,84cyclictest0-21swapper/2921:31:3522
12356991420,86cyclictest0-21swapper/2921:58:5022
12322991411,86cyclictest0-21swapper/2523:48:5218
122449914026,94cyclictest151rcu_preempt23:13:184
12265991390,84cyclictest0-21swapper/1722:54:129
12356991380,85cyclictest0-21swapper/2922:44:1622
122809913729,64cyclictest0-21swapper/2020:55:0013
122809913729,64cyclictest0-21swapper/2020:55:0013
12265991370,84cyclictest0-21swapper/1721:23:529
123229913547,58cyclictest0-21swapper/2523:44:3518
122809913531,57cyclictest0-21swapper/2020:45:1913
122809913531,57cyclictest0-21swapper/2020:45:1913
12362991345,128cyclictest0-21swapper/3022:38:2324
121879913447,54cyclictest0-21swapper/021:35:410
12362991335,115cyclictest0-21swapper/3022:11:3924
123229913349,57cyclictest0-21swapper/2522:38:5018
123229913328,61cyclictest0-21swapper/2520:25:1518
123229913328,61cyclictest0-21swapper/2520:25:1418
123229913327,63cyclictest0-21swapper/2519:20:0218
121879913349,54cyclictest0-21swapper/020:21:290
121879913349,54cyclictest0-21swapper/020:21:280
121879913347,55cyclictest0-21swapper/022:53:440
121879913325,71cyclictest0-21swapper/023:04:410
123229913242,56cyclictest0-21swapper/2522:52:3618
122709913261,46cyclictest0-21swapper/1819:26:2110
12265991320,73cyclictest0-21swapper/1723:31:389
12362991314,104cyclictest0-21swapper/3020:25:3824
12362991314,104cyclictest0-21swapper/3020:25:3824
12362991314,101cyclictest0-21swapper/3000:09:4724
123229913129,64cyclictest0-21swapper/2500:06:3018
122809913149,54cyclictest0-21swapper/2021:45:1913
122809913133,76cyclictest0-21swapper/2022:05:1513
122709913126,61cyclictest0-21swapper/1821:53:4910
121879913124,74cyclictest0-21swapper/023:08:100
121879913123,64cyclictest0-21swapper/019:50:260
12187991310,79cyclictest0-21swapper/021:46:520
123229913046,54cyclictest0-21swapper/2522:32:2618
123229913042,62cyclictest0-21swapper/2521:37:5518
123229913027,66cyclictest0-21swapper/2521:05:2218
123229913027,66cyclictest0-21swapper/2521:05:2218
123229913027,65cyclictest0-21swapper/2519:35:2018
121879913045,63cyclictest0-21swapper/000:14:260
121879913028,66cyclictest0-21swapper/019:32:150
123229912956,63cyclictest0-21swapper/2522:00:2218
123229912946,50cyclictest0-21swapper/2519:51:3518
123229912931,71cyclictest0-21swapper/2522:28:4218
123229912929,73cyclictest0-21swapper/2523:35:2218
123229912927,65cyclictest0-21swapper/2521:30:2518
122709912952,61cyclictest0-21swapper/1822:59:3410
122709912943,57cyclictest0-21swapper/1822:35:3110
121879912935,64cyclictest0-21swapper/021:14:190
121879912935,64cyclictest0-21swapper/021:14:190
121879912929,72cyclictest0-21swapper/019:39:590
121879912928,63cyclictest0-21swapper/021:27:440
121879912928,63cyclictest0-21swapper/021:27:430
12362991285,85cyclictest0-21swapper/3019:55:2324
123229912849,58cyclictest0-21swapper/2522:58:2118
123229912843,55cyclictest0-21swapper/2522:11:0318
123229912826,69cyclictest0-21swapper/2523:08:3118
123229912825,69cyclictest0-21swapper/2523:20:0018
122709912842,54cyclictest0-21swapper/1820:05:2210
122709912842,54cyclictest0-21swapper/1820:05:2110
122709912827,65cyclictest0-21swapper/1800:21:5310
121879912828,68cyclictest0-21swapper/022:48:060
121879912828,65cyclictest0-21swapper/000:29:530
121879912827,65cyclictest0-21swapper/023:38:020
121879912826,61cyclictest0-21swapper/023:15:220
121879912825,60cyclictest0-21swapper/021:30:210
123229912729,67cyclictest0-21swapper/2521:28:1818
123229912729,67cyclictest0-21swapper/2521:28:1718
123229912728,65cyclictest0-21swapper/2523:28:3418
123229912727,66cyclictest0-21swapper/2523:53:4018
122709912736,59cyclictest0-21swapper/1823:32:4310
122709912724,63cyclictest0-21swapper/1823:27:2110
121879912739,61cyclictest0-21swapper/000:21:240
121879912728,67cyclictest0-21swapper/019:24:430
121879912727,67cyclictest0-21swapper/022:59:560
121879912727,65cyclictest0-21swapper/000:07:570
121879912726,63cyclictest0-21swapper/023:22:360
121879912725,62cyclictest0-21swapper/022:40:220
12187991270,76cyclictest0-21swapper/023:40:140
123229912651,58cyclictest0-21swapper/2500:38:3418
123229912629,64cyclictest0-21swapper/2519:13:2318
123229912627,66cyclictest0-21swapper/2500:12:2318
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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