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2026-07-07 - 10:07
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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
Characteristics of the 50 highest latencies:
System rackdslot3.osadl.org (updated Tue Jul 07, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491227164,51phc2sys0-21swapper/319:06:153
139491227164,51phc2sys0-21swapper/319:06:153
150172203169,22sleep00-21swapper/019:06:290
150172203169,22sleep00-21swapper/019:06:290
149942203169,22sleep20-21swapper/219:06:112
149942203169,22sleep20-21swapper/219:06:112
149412201168,22sleep10-21swapper/119:05:301
149412201168,22sleep10-21swapper/119:05:301
611121490,7sleep31559199cyclictest22:15:193
139391750,1ptp4l391rcuc/322:10:233
149332630,3sleep3391rcuc/322:35:013
1559199548,44cyclictest12631-21kworker/3:120:41:333
1559199547,45cyclictest6011-21kworker/3:023:12:133
139391450,2ptp4l0-21swapper/300:30:353
15588994439,3cyclictest32600-21turbostat.cron22:05:000
139391430,0ptp4l401ktimersoftd/320:20:283
139391430,0ptp4l401ktimersoftd/300:18:433
1558999423,9cyclictest25-21ksoftirqd/123:10:181
139391420,0ptp4l401ktimersoftd/321:30:243
15589994036,3cyclictest25-21ksoftirqd/119:20:011
15589994035,2cyclictest25-21ksoftirqd/122:59:591
15589994035,2cyclictest25-21ksoftirqd/121:20:001
57898390,5rtkit-daemon21172-21python22:45:241
15589993934,3cyclictest25-21ksoftirqd/120:19:591
1558899393,34cyclictest15701-21cron23:45:010
57898380,6rtkit-daemon0-21swapper/022:57:180
15591993814,21cyclictest9509-21unixbench_multi22:20:263
15589993833,3cyclictest25-21ksoftirqd/100:35:001
15589993832,4cyclictest25-21ksoftirqd/119:52:021
15589993832,4cyclictest25-21ksoftirqd/119:52:021
15591993711,22cyclictest1800-21expr23:15:153
15590993731,3cyclictest33-21ksoftirqd/222:00:002
15590993728,8cyclictest33-21ksoftirqd/223:00:252
15589993733,2cyclictest25-21ksoftirqd/122:35:011
15589993732,3cyclictest25-21ksoftirqd/122:54:591
15589993732,3cyclictest25-21ksoftirqd/120:14:591
15589993731,4cyclictest25-21ksoftirqd/123:42:331
15589993731,4cyclictest25-21ksoftirqd/100:02:081
15589993731,4cyclictest25-21ksoftirqd/100:02:071
15588993721,13cyclictest9-21ksoftirqd/000:30:130
139391370,0ptp4l401ktimersoftd/319:44:553
1559199369,26cyclictest12631-21kworker/3:120:57:123
15591993611,22cyclictest28800-21cron20:50:003
15590993631,3cyclictest33-21ksoftirqd/220:49:252
15590993630,4cyclictest33-21ksoftirqd/220:52:462
15590993630,4cyclictest33-21ksoftirqd/200:27:412
15589993632,3cyclictest25-21ksoftirqd/121:25:001
15589993632,2cyclictest25-21ksoftirqd/120:00:011
15589993631,2cyclictest25-21ksoftirqd/120:25:191
15589993630,4cyclictest25-21ksoftirqd/119:20:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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