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2026-04-09 - 09:29
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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 Apr 09, 2026 00:48:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
330891298290,6phc2sys0-21swapper/219:05:1212
330891298290,6phc2sys0-21swapper/219:05:1212
114839923131,4cyclictest151rcu_preempt21:57:0215
3273912290,219ptp4l0-21swapper/119:08:141
3273912290,219ptp4l0-21swapper/119:08:141
85712218209,7sleep250-21swapper/2519:05:1818
85712218209,7sleep250-21swapper/2519:05:1818
11531991780,160cyclictest0-21swapper/2922:04:3822
113789916738,82cyclictest0-21swapper/600:11:2828
113789916738,82cyclictest0-21swapper/600:11:2828
113519916428,114cyclictest0-21swapper/222:51:0312
113789916332,98cyclictest0-21swapper/621:37:0028
113519916327,89cyclictest0-21swapper/222:08:1012
113789916232,97cyclictest0-21swapper/621:21:2928
113519916228,83cyclictest0-21swapper/223:39:0812
113519916129,114cyclictest0-21swapper/200:34:5512
113519916129,114cyclictest0-21swapper/200:34:5512
113519915929,76cyclictest0-21swapper/222:33:1712
11366991589,116cyclictest151rcu_preempt22:39:1026
11387991548,99cyclictest0-21swapper/700:15:1429
113669915016,132cyclictest151rcu_preempt00:11:4626
113669915016,132cyclictest151rcu_preempt00:11:4626
115189914851,91cyclictest0-21swapper/2722:42:3320
113519914829,87cyclictest0-21swapper/219:30:1812
113519914829,87cyclictest0-21swapper/219:30:1712
115189914761,41cyclictest0-21swapper/2700:20:5320
113669914735,24cyclictest0-21swapper/423:25:1726
11445991450,92cyclictest0-21swapper/1619:55:008
11387991458,83cyclictest0-21swapper/721:24:1229
113789914538,66cyclictest0-21swapper/622:24:0228
11387991448,98cyclictest0-21swapper/722:10:0929
113669914431,91cyclictest0-21swapper/419:10:2226
113669914431,91cyclictest0-21swapper/419:10:2226
11351991440,84cyclictest0-21swapper/219:15:2012
11351991440,84cyclictest0-21swapper/219:15:2012
11387991438,96cyclictest0-21swapper/721:19:5529
11371991430,85cyclictest0-21swapper/522:45:2427
113519914329,62cyclictest0-21swapper/221:34:4812
114459914239,102cyclictest0-21swapper/1621:38:088
114349914132,66cyclictest0-21swapper/1419:50:166
113789914138,63cyclictest0-21swapper/622:14:3628
113789914124,78cyclictest0-21swapper/622:49:0928
114349914015,83cyclictest0-21swapper/1419:13:066
114349914015,83cyclictest0-21swapper/1419:13:066
113519914026,74cyclictest0-21swapper/200:12:0612
113519914026,74cyclictest0-21swapper/200:12:0612
11366991390,85cyclictest0-21swapper/421:29:1726
114459913833,66cyclictest0-21swapper/1623:00:218
113519913724,78cyclictest0-21swapper/223:25:4812
11531991360,82cyclictest0-21swapper/2921:04:0222
114459913632,94cyclictest0-21swapper/1623:58:528
114349913645,62cyclictest0-21swapper/1423:35:496
11371991360,84cyclictest0-21swapper/500:32:5027
11371991360,84cyclictest0-21swapper/500:32:5027
114459913533,54cyclictest0-21swapper/1621:05:068
114459913432,59cyclictest0-21swapper/1621:59:058
114349913428,73cyclictest0-21swapper/1423:19:136
115319913348,56cyclictest0-21swapper/2921:15:2322
114459913330,102cyclictest0-21swapper/1619:45:148
114349913355,57cyclictest0-21swapper/1400:20:416
11351991336,72cyclictest0-21swapper/223:06:1112
115189913235,78cyclictest0-21swapper/2722:27:0320
114349913244,54cyclictest0-21swapper/1419:15:336
114349913244,54cyclictest0-21swapper/1419:15:326
113669913249,56cyclictest0-21swapper/423:22:0326
113669913244,57cyclictest0-21swapper/421:45:2026
113669913239,66cyclictest0-21swapper/423:19:5526
11511991310,86cyclictest0-21swapper/2621:25:0319
114349913128,70cyclictest0-21swapper/1422:01:436
114349913126,67cyclictest0-21swapper/1421:10:246
113669913149,62cyclictest0-21swapper/419:20:2326
113669913149,62cyclictest0-21swapper/419:20:2226
113669913142,56cyclictest0-21swapper/423:37:1526
115319913051,48cyclictest19633-21taskset20:57:3422
115319913039,72cyclictest0-21swapper/2900:20:2422
114459913028,62cyclictest0-21swapper/1622:35:138
114349913053,58cyclictest0-21swapper/1423:28:186
114349913031,64cyclictest0-21swapper/1421:04:346
114349913029,74cyclictest0-21swapper/1423:04:476
114349913029,70cyclictest0-21swapper/1422:06:326
114349913027,70cyclictest0-21swapper/1421:35:006
114349913026,69cyclictest0-21swapper/1420:10:196
113669913022,61cyclictest0-21swapper/421:16:5926
113519913027,66cyclictest0-21swapper/221:47:0412
114459912926,62cyclictest0-21swapper/1623:50:478
114349912941,66cyclictest0-21swapper/1400:08:236
114349912928,71cyclictest0-21swapper/1421:20:036
114349912928,69cyclictest0-21swapper/1422:57:186
114349912927,61cyclictest0-21swapper/1419:20:516
114349912927,61cyclictest0-21swapper/1419:20:516
113669912953,56cyclictest0-21swapper/420:40:2226
113669912924,62cyclictest0-21swapper/421:14:1926
113669912921,65cyclictest0-21swapper/423:04:5526
114459912825,90cyclictest0-21swapper/1620:35:008
114349912831,72cyclictest0-21swapper/1400:39:416
114349912831,72cyclictest0-21swapper/1400:39:416
114349912829,71cyclictest0-21swapper/1422:18:516
114349912828,68cyclictest0-21swapper/1423:32:356
114349912828,66cyclictest0-21swapper/1423:51:496
114349912828,66cyclictest0-21swapper/1420:08:266
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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