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2026-06-12 - 22:43
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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 Jun 12, 2026 12:49:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2025699353155,1cyclictest151rcu_preempt12:37:3317
3273912550,246ptp4l0-21swapper/107:09:561
3273912550,246ptp4l0-21swapper/107:09:561
202099924226,158cyclictest20246-21date07:10:005
202099924226,158cyclictest20246-21date07:10:005
2020099160102,57cyclictest82-21ksoftirqd/1110:12:083
202209915819,109cyclictest0-21swapper/1612:02:218
201809915834,122cyclictest151rcu_preempt10:32:5428
201729915710,136cyclictest151rcu_preempt10:18:2126
20200991530,91cyclictest0-21swapper/1111:16:483
20200991530,91cyclictest0-21swapper/1111:16:483
20180991530,92cyclictest0-21swapper/608:13:5928
201589915133,76cyclictest0-21swapper/111:33:141
201589915133,76cyclictest0-21swapper/111:33:141
202569915017,80cyclictest0-21swapper/2409:10:1217
202569914917,98cyclictest0-21swapper/2411:35:0117
202569914917,98cyclictest0-21swapper/2411:35:0117
201589914926,93cyclictest0-21swapper/111:07:031
201589914926,93cyclictest0-21swapper/111:07:031
201589914744,67cyclictest0-21swapper/111:58:211
201589914744,67cyclictest0-21swapper/111:58:211
20280991440,90cyclictest0-21swapper/2911:47:3622
20280991440,90cyclictest0-21swapper/2911:47:3622
20200991440,84cyclictest0-21swapper/1111:37:473
20200991440,84cyclictest0-21swapper/1111:37:463
202339914328,111cyclictest0-21swapper/1811:53:5010
202339914328,111cyclictest0-21swapper/1811:53:5010
202209914325,57cyclictest0-21swapper/1610:35:028
202339914229,86cyclictest0-21swapper/1808:48:5510
202339914227,113cyclictest0-21swapper/1810:59:1810
202339914227,113cyclictest0-21swapper/1810:59:1810
202209914230,68cyclictest0-21swapper/1607:37:378
201729914232,101cyclictest0-21swapper/410:22:0126
202569914117,87cyclictest0-21swapper/2407:35:2717
20237991410,88cyclictest0-21swapper/1909:56:1411
20237991410,88cyclictest0-21swapper/1909:56:1411
202339914128,68cyclictest0-21swapper/1812:39:4710
202209914129,65cyclictest0-21swapper/1607:24:148
20237991400,83cyclictest0-21swapper/1911:00:2411
202339914026,99cyclictest0-21swapper/1809:20:2510
202339914026,66cyclictest0-21swapper/1811:03:3510
202339914024,111cyclictest0-21swapper/1811:19:0310
202339914024,111cyclictest0-21swapper/1811:19:0310
202209914032,64cyclictest0-21swapper/1610:49:068
20200991400,85cyclictest0-21swapper/1107:39:523
20180991400,81cyclictest0-21swapper/607:40:1928
202569913917,90cyclictest0-21swapper/2407:40:2617
202379913951,61cyclictest0-21swapper/1907:20:1411
202209913949,59cyclictest0-21swapper/1607:25:198
202209913949,56cyclictest0-21swapper/1612:21:268
202209913947,61cyclictest0-21swapper/1612:10:118
202209913943,55cyclictest0-21swapper/1609:34:108
202209913930,65cyclictest0-21swapper/1612:35:178
202209913930,62cyclictest0-21swapper/1610:52:408
202209913930,62cyclictest0-21swapper/1610:52:408
202209913927,65cyclictest0-21swapper/1611:10:028
202209913927,65cyclictest0-21swapper/1611:10:028
20180991390,85cyclictest0-21swapper/610:55:2228
20180991390,85cyclictest0-21swapper/610:55:2228
20180991390,84cyclictest0-21swapper/608:55:0828
20180991390,83cyclictest0-21swapper/612:23:0128
202339913824,90cyclictest0-21swapper/1812:34:5910
202209913830,62cyclictest0-21swapper/1608:41:568
202209913828,68cyclictest0-21swapper/1610:30:138
202009913830,62cyclictest0-21swapper/1110:15:223
201809913849,59cyclictest0-21swapper/608:50:2028
20180991380,83cyclictest0-21swapper/612:35:1928
20180991380,79cyclictest0-21swapper/607:25:2128
202379913725,63cyclictest0-21swapper/1910:07:2911
202339913724,86cyclictest0-21swapper/1811:09:5910
202339913724,86cyclictest0-21swapper/1811:09:5910
202339913723,80cyclictest0-21swapper/1812:00:1410
202209913736,56cyclictest0-21swapper/1612:16:188
202209913727,66cyclictest0-21swapper/1610:20:368
202379913628,65cyclictest0-21swapper/1908:20:0411
202379913626,62cyclictest0-21swapper/1909:27:2411
202209913631,62cyclictest0-21swapper/1608:05:018
202209913628,61cyclictest0-21swapper/1612:05:218
202209913627,62cyclictest0-21swapper/1609:05:178
202009913627,66cyclictest0-21swapper/1111:22:433
202009913627,66cyclictest0-21swapper/1111:22:433
201809913628,67cyclictest0-21swapper/608:15:3528
20180991360,80cyclictest0-21swapper/607:20:3328
202379913547,58cyclictest0-21swapper/1909:43:2611
202379913544,58cyclictest0-21swapper/1908:55:2011
202379913529,68cyclictest0-21swapper/1910:22:2711
202339913522,89cyclictest0-21swapper/1812:05:3510
202209913548,57cyclictest0-21swapper/1608:25:218
202209913541,59cyclictest0-21swapper/1609:46:268
202209913530,66cyclictest0-21swapper/1611:06:358
202209913530,66cyclictest0-21swapper/1611:06:358
202209913530,65cyclictest0-21swapper/1609:25:018
202209913529,62cyclictest0-21swapper/1608:15:028
202209913529,62cyclictest0-21swapper/1607:15:128
202209913528,61cyclictest0-21swapper/1609:35:528
20180991350,82cyclictest0-21swapper/610:38:1628
20180991350,81cyclictest0-21swapper/609:40:1828
202569913417,73cyclictest0-21swapper/2410:26:2617
202379913445,73cyclictest0-21swapper/1910:00:1711
202379913444,59cyclictest0-21swapper/1911:06:4911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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