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2026-05-01 - 15:53
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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 Fri May 01, 2026 12:49:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912900,282ptp4l0-21swapper/107:06:571
312579926971,1cyclictest151rcu_preempt10:58:2926
31464991849,151cyclictest0-21swapper/3009:55:4824
31464991849,151cyclictest0-21swapper/3009:55:4724
31464991839,129cyclictest0-21swapper/3010:13:2724
286922177168,7sleep130-21swapper/1307:05:205
31464991709,112cyclictest0-21swapper/3008:45:1624
31464991709,112cyclictest0-21swapper/3008:45:1524
314479915932,108cyclictest0-21swapper/2809:39:0021
314479915932,108cyclictest0-21swapper/2809:39:0021
312699915811,94cyclictest0-21swapper/611:10:1428
31464991569,100cyclictest0-21swapper/3011:24:3224
31464991559,116cyclictest0-21swapper/3010:41:1424
314479915528,97cyclictest0-21swapper/2811:06:2321
31464991549,117cyclictest0-21swapper/3009:17:5124
31464991549,117cyclictest0-21swapper/3009:17:5124
31464991490,90cyclictest0-21swapper/3007:55:0124
314479914729,64cyclictest0-21swapper/2807:19:3121
31447991470,92cyclictest0-21swapper/2809:10:3921
31447991470,92cyclictest0-21swapper/2809:10:3921
31279991460,86cyclictest0-21swapper/710:10:2229
314229914439,104cyclictest0-21swapper/2510:43:1718
314229914339,73cyclictest0-21swapper/2512:37:4018
31326991430,85cyclictest0-21swapper/1309:35:215
31326991430,85cyclictest0-21swapper/1309:35:215
31464991399,93cyclictest0-21swapper/3010:05:2524
314229913839,51cyclictest0-21swapper/2509:40:1618
314229913839,51cyclictest0-21swapper/2509:40:1618
31285991380,88cyclictest0-21swapper/810:10:1130
312699913811,92cyclictest0-21swapper/608:50:1228
312699913811,92cyclictest0-21swapper/608:50:1228
31262991380,86cyclictest0-21swapper/509:55:3427
31262991380,86cyclictest0-21swapper/509:55:3427
314649913750,57cyclictest0-21swapper/3007:11:1324
314649913747,57cyclictest0-21swapper/3009:06:3824
314649913747,57cyclictest0-21swapper/3009:06:3824
314229913732,66cyclictest0-21swapper/2509:33:1618
314229913732,66cyclictest0-21swapper/2509:33:1518
313829913722,51cyclictest151rcu_preempt07:10:2013
31326991370,89cyclictest94-21ksoftirqd/1307:57:255
314649913541,62cyclictest0-21swapper/3009:42:5924
314649913541,62cyclictest0-21swapper/3009:42:5824
31235991350,94cyclictest0-21swapper/108:11:221
314649913346,60cyclictest0-21swapper/3008:08:2324
314479913339,58cyclictest0-21swapper/2811:49:1421
31326991330,90cyclictest0-21swapper/1309:25:355
31326991330,90cyclictest0-21swapper/1309:25:355
314649913253,56cyclictest0-21swapper/3008:15:2024
314649913232,70cyclictest0-21swapper/3011:28:3324
314649913227,71cyclictest0-21swapper/3011:49:3824
314229913227,83cyclictest0-21swapper/2511:15:4018
313829913213,87cyclictest151rcu_preempt10:00:1713
31279991327,73cyclictest0-21swapper/709:37:1529
31279991327,73cyclictest0-21swapper/709:37:1529
312629913229,102cyclictest0-21swapper/511:19:3427
312629913226,62cyclictest0-21swapper/510:20:2927
314649913142,58cyclictest0-21swapper/3012:00:1924
314649913141,62cyclictest0-21swapper/3009:53:0824
314649913141,62cyclictest0-21swapper/3009:53:0824
314479913136,49cyclictest0-21swapper/2810:53:4921
314229913125,105cyclictest0-21swapper/2509:11:5418
314229913125,105cyclictest0-21swapper/2509:11:5418
31422991310,85cyclictest0-21swapper/2511:43:4118
314649913044,57cyclictest0-21swapper/3011:58:3024
314479913034,77cyclictest0-21swapper/2810:16:2421
314229913027,67cyclictest0-21swapper/2509:20:5918
314229913027,67cyclictest0-21swapper/2509:20:5918
314229913025,66cyclictest0-21swapper/2508:15:1518
313829913025,72cyclictest151rcu_preempt09:23:2213
313829913025,72cyclictest151rcu_preempt09:23:2213
312799913049,57cyclictest0-21swapper/712:31:2929
312629913026,66cyclictest0-21swapper/511:42:1627
312629913025,62cyclictest0-21swapper/511:57:1427
314649912955,59cyclictest0-21swapper/3011:12:4624
314649912954,61cyclictest0-21swapper/3009:39:1324
314649912954,61cyclictest0-21swapper/3009:39:1324
314649912946,70cyclictest0-21swapper/3009:33:5324
314649912946,70cyclictest0-21swapper/3009:33:5324
314649912929,66cyclictest0-21swapper/3012:19:3424
314649912927,66cyclictest0-21swapper/3010:17:4224
312629912929,68cyclictest0-21swapper/512:21:0227
314649912848,62cyclictest0-21swapper/3010:23:5424
314649912842,62cyclictest0-21swapper/3011:38:5724
314649912828,66cyclictest0-21swapper/3012:09:2424
314649912826,67cyclictest0-21swapper/3012:28:0724
314479912829,62cyclictest0-21swapper/2812:32:5721
314229912839,53cyclictest0-21swapper/2511:45:1618
312629912829,62cyclictest0-21swapper/509:12:3827
312629912829,62cyclictest0-21swapper/509:12:3827
312629912828,66cyclictest0-21swapper/512:03:0827
312629912827,68cyclictest0-21swapper/512:15:2527
312629912827,66cyclictest0-21swapper/511:25:1127
312629912827,58cyclictest0-21swapper/507:15:2427
312579912813,56cyclictest0-21swapper/407:40:1326
314649912748,66cyclictest0-21swapper/3009:13:0324
314649912748,66cyclictest0-21swapper/3009:13:0324
314649912732,80cyclictest0-21swapper/3009:28:3224
314649912732,80cyclictest0-21swapper/3009:28:3224
314649912730,75cyclictest0-21swapper/3007:48:5424
314649912729,66cyclictest0-21swapper/3009:21:2124
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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