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2026-08-18 - 07:21
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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 Tue Aug 18, 2026 00:49:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913110,303ptp4l0-21swapper/119:08:181
895499173141,1cyclictest151rcu_preempt22:40:214
90209915315,136cyclictest10567-21hddtemp_smartct21:15:1614
90209915215,91cyclictest0-21swapper/2122:21:0614
90209915215,134cyclictest0-21swapper/2121:50:4014
9064991510,85cyclictest0-21swapper/2722:25:0320
330891149140,6phc2sys0-21swapper/219:05:2512
90209914815,31cyclictest0-21swapper/2120:04:5514
90209914815,31cyclictest0-21swapper/2120:04:5514
90209914716,115cyclictest0-21swapper/2100:27:5314
9064991450,85cyclictest0-21swapper/2723:37:3320
90209914515,81cyclictest0-21swapper/2123:41:5014
8930991400,85cyclictest0-21swapper/900:33:3231
89549913912,97cyclictest151rcu_preempt21:29:004
8958991380,112cyclictest0-21swapper/1300:05:525
8930991360,84cyclictest0-21swapper/919:55:0731
8930991360,84cyclictest0-21swapper/919:55:0631
90209913515,76cyclictest0-21swapper/2100:00:3714
8989991350,88cyclictest0-21swapper/1721:14:199
8989991350,78cyclictest0-21swapper/1722:00:179
88659913529,105cyclictest13-21ksoftirqd/022:52:130
89379913434,55cyclictest0-21swapper/1022:30:382
9020991330,83cyclictest0-21swapper/2121:48:0314
89309913349,39cyclictest0-21swapper/919:10:1331
8891991335,126cyclictest0-21swapper/419:40:2426
90209913220,84cyclictest151rcu_preempt00:24:4014
90209913215,71cyclictest0-21swapper/2122:03:3314
8891991326,125cyclictest0-21swapper/400:00:1226
8891991325,114cyclictest0-21swapper/423:20:1326
8891991325,100cyclictest0-21swapper/400:10:1926
8891991315,94cyclictest0-21swapper/422:53:3026
8891991315,124cyclictest19098-21smart_sda23:55:2326
89379913024,68cyclictest0-21swapper/1022:25:182
8891991295,99cyclictest0-21swapper/423:15:1426
8891991295,73cyclictest0-21swapper/423:54:4526
90209912815,74cyclictest0-21swapper/2123:33:5414
89139912817,76cyclictest58-21ksoftirqd/721:25:2329
90209912715,111cyclictest0-21swapper/2123:05:2914
8891991275,96cyclictest0-21swapper/400:20:5826
90209912615,74cyclictest0-21swapper/2121:22:2414
8989991240,77cyclictest0-21swapper/1700:07:309
89309912340,56cyclictest0-21swapper/921:32:2831
9064991226,65cyclictest0-21swapper/2722:08:5020
89669912234,47cyclictest0-21swapper/1423:17:446
89309912227,67cyclictest0-21swapper/900:09:3031
8865991220,72cyclictest0-21swapper/020:02:430
8865991220,72cyclictest0-21swapper/020:02:420
90209912115,68cyclictest0-21swapper/2123:24:4914
90209912114,83cyclictest0-21swapper/2122:07:5114
8997991219,78cyclictest0-21swapper/1823:46:0710
89309912139,57cyclictest0-21swapper/923:19:4831
89309912138,54cyclictest0-21swapper/923:31:5131
90649912016,63cyclictest0-21swapper/2723:42:0120
90649912015,58cyclictest0-21swapper/2721:25:1120
9020991200,83cyclictest0-21swapper/2100:10:1414
8997991209,80cyclictest0-21swapper/1821:18:3710
8997991209,110cyclictest0-21swapper/1823:24:4610
89309912030,59cyclictest0-21swapper/900:12:4331
89309912025,64cyclictest0-21swapper/923:52:1631
89309912024,62cyclictest0-21swapper/923:21:5631
90649911922,65cyclictest0-21swapper/2719:17:4920
8997991199,66cyclictest0-21swapper/1822:11:4810
8997991198,93cyclictest0-21swapper/1821:40:0010
8997991198,92cyclictest0-21swapper/1800:09:0710
89669911954,64cyclictest0-21swapper/1422:06:406
8958991190,118cyclictest0-21swapper/1323:50:365
89309911952,59cyclictest0-21swapper/922:02:5031
89309911926,63cyclictest0-21swapper/920:15:0231
89309911926,63cyclictest0-21swapper/920:15:0231
89309911925,62cyclictest0-21swapper/922:41:1931
89309911925,62cyclictest0-21swapper/922:38:5631
89309911925,61cyclictest0-21swapper/921:16:5131
89309911924,56cyclictest0-21swapper/919:47:3831
8891991195,62cyclictest0-21swapper/422:05:1526
90649911845,48cyclictest0-21swapper/2722:17:0220
8997991188,103cyclictest0-21swapper/1822:40:2310
89309911845,62cyclictest0-21swapper/921:51:3631
89309911835,54cyclictest0-21swapper/921:55:5331
89309911825,63cyclictest0-21swapper/900:23:5631
89309911824,62cyclictest0-21swapper/922:12:2731
8907991180,84cyclictest0-21swapper/622:35:2228
88659911816,64cyclictest0-21swapper/023:28:470
90649911736,51cyclictest0-21swapper/2700:23:0920
90649911736,49cyclictest0-21swapper/2700:36:0020
90649911733,59cyclictest0-21swapper/2721:46:3320
90649911726,59cyclictest0-21swapper/2721:42:3820
90649911725,60cyclictest0-21swapper/2721:30:1720
89899911733,35cyclictest0-21swapper/1700:35:189
89309911728,51cyclictest0-21swapper/900:00:4631
89309911727,65cyclictest0-21swapper/922:15:4031
89309911726,65cyclictest0-21swapper/923:47:3431
89309911726,58cyclictest0-21swapper/919:35:2131
89309911725,66cyclictest0-21swapper/923:09:0731
89309911725,60cyclictest0-21swapper/920:42:4231
89309911725,60cyclictest0-21swapper/920:42:4131
89309911725,60cyclictest0-21swapper/920:35:1031
89309911725,60cyclictest0-21swapper/920:35:1031
89309911724,65cyclictest0-21swapper/923:29:5731
89309911724,63cyclictest0-21swapper/922:32:4631
89309911723,63cyclictest0-21swapper/922:27:0931
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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