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2026-05-25 - 20:02
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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 rack0slot2.osadl.org (updated Mon May 25, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252913325947,8sleep40-21swapper/407:02:264
252913325947,8sleep40-21swapper/407:02:264
2538590995250,2cyclictest2854909-21kworker/u16:1+events_unbound11:22:446
2538588994744,2cyclictest2854909-21kworker/u16:1+flush-8:010:17:345
253823224737,7sleep50-21swapper/507:06:205
253823224737,7sleep50-21swapper/507:06:205
2538584994238,3cyclictest2273262-21kworker/u16:0+flush-8:007:32:184
2538584994238,3cyclictest2273262-21kworker/u16:0+flush-8:007:32:184
2538590994138,2cyclictest2609868-21kworker/u16:0+flush-8:008:42:186
25380182403,31sleep70-21swapper/707:03:177
25380182403,31sleep70-21swapper/707:03:177
2538598993935,3cyclictest124-21kswapd011:12:187
2538584993937,2cyclictest2854909-21kworker/u16:1+flush-8:012:17:134
2538584993936,2cyclictest3192900-21kworker/u16:0+flush-8:012:32:464
2538584993835,2cyclictest2705504-21kworker/u16:3+flush-8:009:07:184
2538590993734,2cyclictest3192900-21kworker/u16:0+flush-8:012:32:286
2538588993735,2cyclictest2772823-21kworker/u16:4+events_unbound09:20:085
2538588993634,2cyclictest2854909-21kworker/u16:1+events_unbound12:09:205
2538588993633,2cyclictest2893467-21kworker/u16:3+events_unbound10:32:195
2538588993633,2cyclictest2854909-21kworker/u16:1+events_unbound12:27:195
2538590993533,2cyclictest3110492-21kworker/u16:4+flush-8:011:54:166
2538590993529,6cyclictest3224797-21kworker/u16:2+events_unbound12:22:516
2538588993533,2cyclictest3110492-21kworker/u16:4+events_unbound11:36:445
2538588993533,2cyclictest3110492-21kworker/u16:4+events_unbound11:36:445
2538588993533,2cyclictest2893467-21kworker/u16:3+flush-8:010:08:005
2538588993533,2cyclictest2854909-21kworker/u16:1+events_unbound10:13:005
2538588993533,2cyclictest2854909-21kworker/u16:1+events_unbound10:13:005
2538588993432,2cyclictest3192900-21kworker/u16:0+events_unbound12:20:485
2538588993432,2cyclictest3192900-21kworker/u16:0+events_unbound12:16:365
2538588993432,2cyclictest2881478-21kworker/u16:0+flush-8:009:58:035
2538588993432,2cyclictest2609868-21kworker/u16:0+events_unbound08:32:215
2538588993331,2cyclictest3192900-21kworker/u16:0+events_unbound12:36:485
2538588993331,2cyclictest2868963-21kworker/u16:2+events_unbound10:40:355
2538588993331,2cyclictest2854909-21kworker/u16:1+events_unbound09:50:085
2538588993331,2cyclictest2705504-21kworker/u16:3+events_unbound09:15:215
27828142320,0chrt2782815-21ssh09:08:327
2538590993229,2cyclictest2763302-21kworker/u16:0+events_unbound09:22:386
2538588993230,2cyclictest3110492-21kworker/u16:4+events_unbound11:42:525
2538588993230,2cyclictest2854909-21kworker/u16:1+events_unbound11:10:115
2538588993230,2cyclictest2854909-21kworker/u16:1+events_unbound10:53:095
2538588993230,2cyclictest2854909-21kworker/u16:1+events_unbound10:53:095
2538588993230,2cyclictest2854909-21kworker/u16:1+events_unbound09:54:025
2538588993230,2cyclictest2772823-21kworker/u16:4+events_unbound09:09:215
2538588993230,2cyclictest2763302-21kworker/u16:0+events_unbound09:33:105
2538588993230,2cyclictest2763302-21kworker/u16:0+events_unbound09:33:105
2538588993230,2cyclictest2763302-21kworker/u16:0+events_unbound09:29:585
2538588993230,2cyclictest2609868-21kworker/u16:0+events_unbound08:41:345
2538588993230,2cyclictest2580820-21kworker/u16:1+events_unbound07:40:455
2538598993130,0cyclictest0-21swapper/711:52:327
2538590993129,2cyclictest3110492-21kworker/u16:4+events_unbound11:52:166
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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