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2025-12-27 - 02:23
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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 50 highest latencies:
System rackcslot8.osadl.org (updated Fri Dec 26, 2025 12:48:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21890991910,73cyclictest0-21swapper/1611:18:268
21896991813,134cyclictest0-21swapper/1709:05:229
21896991813,134cyclictest0-21swapper/1709:05:229
21991991782,169cyclictest0-21swapper/3011:14:3424
21991991771,131cyclictest0-21swapper/3007:25:2024
2189099162116,31cyclictest112-21ksoftirqd/1610:58:038
219769915847,43cyclictest0-21swapper/2810:51:2221
21991991551,96cyclictest0-21swapper/3008:20:2224
21991991551,96cyclictest0-21swapper/3008:20:2224
219769915312,24cyclictest0-21swapper/2809:37:3121
218909915225,112cyclictest0-21swapper/1609:15:148
219769915041,79cyclictest0-21swapper/2812:20:2221
218909915022,58cyclictest0-21swapper/1612:08:578
21890991500,61cyclictest0-21swapper/1610:46:218
21991991491,119cyclictest0-21swapper/3007:40:1824
21991991481,106cyclictest0-21swapper/3011:00:4124
218909914822,111cyclictest0-21swapper/1610:18:508
21827991480,89cyclictest0-21swapper/209:50:1212
219769914736,95cyclictest0-21swapper/2810:02:1221
218909914723,123cyclictest0-21swapper/1611:14:138
218909914622,109cyclictest0-21swapper/1611:25:028
219689914519,94cyclictest0-21swapper/2710:25:4220
21851991450,86cyclictest0-21swapper/712:28:1029
218909914420,95cyclictest0-21swapper/1611:59:068
21991991432,108cyclictest0-21swapper/3011:43:5824
219769914330,66cyclictest0-21swapper/2809:30:2321
21896991433,137cyclictest0-21swapper/1708:44:439
21896991433,137cyclictest0-21swapper/1708:44:439
21890991430,84cyclictest0-21swapper/1608:40:158
21890991430,84cyclictest0-21swapper/1608:40:158
21834991430,88cyclictest0-21swapper/410:20:2026
21991991421,87cyclictest0-21swapper/3008:26:1524
21991991421,87cyclictest0-21swapper/3008:26:1424
218909914226,116cyclictest0-21swapper/1612:00:088
21890991420,86cyclictest0-21swapper/1611:00:168
21890991420,85cyclictest0-21swapper/1610:30:198
21840991420,85cyclictest0-21swapper/507:10:2927
21991991411,104cyclictest0-21swapper/3008:15:0224
21991991411,104cyclictest0-21swapper/3008:15:0124
21890991410,80cyclictest0-21swapper/1611:31:478
21876991410,87cyclictest0-21swapper/1309:56:165
219689914032,61cyclictest0-21swapper/2709:30:1920
21890991400,82cyclictest0-21swapper/1611:25:028
21896991394,133cyclictest0-21swapper/1710:50:189
218909913952,59cyclictest0-21swapper/1610:02:028
21890991380,82cyclictest0-21swapper/1611:53:178
21890991380,82cyclictest0-21swapper/1607:55:218
21890991380,82cyclictest0-21swapper/1607:55:218
21890991380,80cyclictest0-21swapper/1608:55:138
21890991380,80cyclictest0-21swapper/1608:55:138
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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