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2026-05-24 - 14:26
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Sun May 24, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1998021650,2sleep01356299cyclictest00:00:170
127621510,7sleep01356299cyclictest19:50:260
615521370,5sleep21356499cyclictest21:10:282
13563996934,7cyclictest25-21ksoftirqd/121:35:201
13563996932,8cyclictest25-21ksoftirqd/122:05:271
13563996534,3cyclictest25-21ksoftirqd/123:05:011
13563996533,7cyclictest25-21ksoftirqd/121:45:281
134491650,19ptp4l16269-21/usr/sbin/munin21:35:133
13563996430,4cyclictest25-21ksoftirqd/122:10:161
13563996429,4cyclictest25-21ksoftirqd/121:15:151
13562996328,4cyclictest9-21ksoftirqd/019:45:010
13563996230,3cyclictest25-21ksoftirqd/119:20:281
13563996229,3cyclictest25-21ksoftirqd/121:55:151
13563996219,8cyclictest25-21ksoftirqd/122:00:161
134491620,19ptp4l3342-21ntp_states19:55:242
13562996125,7cyclictest9-21ksoftirqd/022:04:590
13563996030,3cyclictest25-21ksoftirqd/123:30:301
134491600,4ptp4l0-21swapper/321:15:173
13563995929,4cyclictest25-21ksoftirqd/123:10:011
13563995927,3cyclictest25-21ksoftirqd/123:20:181
13562995928,4cyclictest9-21ksoftirqd/019:30:240
13562995926,4cyclictest9-21ksoftirqd/000:34:300
13562995926,3cyclictest9-21ksoftirqd/020:40:270
230012580,4sleep30-21swapper/319:30:003
13563995831,3cyclictest25-21ksoftirqd/120:30:231
13563995828,4cyclictest25-21ksoftirqd/121:32:491
13563995826,3cyclictest25-21ksoftirqd/119:45:291
13563995826,3cyclictest25-21ksoftirqd/100:25:281
13562995830,4cyclictest9-21ksoftirqd/020:38:350
13562995828,8cyclictest9-21ksoftirqd/023:12:560
13562995826,4cyclictest9-21ksoftirqd/022:10:130
13562995823,4cyclictest9-21ksoftirqd/020:15:140
13562995820,5cyclictest9-21ksoftirqd/000:10:270
13563995722,10cyclictest25-21ksoftirqd/123:58:481
13563995721,4cyclictest25-21ksoftirqd/120:00:251
13562995727,4cyclictest9-21ksoftirqd/021:40:180
13562995725,3cyclictest121rcu_preempt22:10:000
134491570,4ptp4l0-21swapper/219:51:032
134491570,3ptp4l0-21swapper/323:05:143
13563995627,3cyclictest25-21ksoftirqd/120:25:171
13563995624,4cyclictest25-21ksoftirqd/122:39:061
13563995623,4cyclictest25-21ksoftirqd/100:05:271
13563995621,3cyclictest25-21ksoftirqd/100:20:241
13563995614,3cyclictest25-21ksoftirqd/122:45:011
13562995626,3cyclictest9-21ksoftirqd/022:35:150
13562995623,4cyclictest9-21ksoftirqd/021:50:200
134491560,3ptp4l0-21swapper/220:18:152
134491560,13ptp4l0-21swapper/200:10:182
13563995523,4cyclictest25-21ksoftirqd/121:20:241
13562995531,3cyclictest9-21ksoftirqd/000:36:590
13562995525,4cyclictest9-21ksoftirqd/023:00:130
13562995525,3cyclictest9-21ksoftirqd/019:20:130
13562995522,7cyclictest9-21ksoftirqd/021:04:590
13563995426,4cyclictest25-21ksoftirqd/120:20:011
13563995425,4cyclictest25-21ksoftirqd/120:20:201
13563995419,5cyclictest25-21ksoftirqd/122:16:101
13562995426,4cyclictest9-21ksoftirqd/021:15:160
13562995425,4cyclictest9-21ksoftirqd/023:50:170
13562995421,4cyclictest9-21ksoftirqd/000:10:000
134491540,4ptp4l0-21swapper/200:29:492
134491540,3ptp4l0-21swapper/223:55:232
134491540,3ptp4l0-21swapper/223:35:192
13563995322,3cyclictest25-21ksoftirqd/100:00:171
13562995324,4cyclictest9-21ksoftirqd/022:55:360
134491530,4ptp4l0-21swapper/221:40:132
134491530,3ptp4l0-21swapper/220:30:062
13563995223,4cyclictest25-21ksoftirqd/123:25:191
13563995223,3cyclictest25-21ksoftirqd/120:10:121
13563995219,6cyclictest25-21ksoftirqd/119:33:551
13563995219,4cyclictest25-21ksoftirqd/120:35:211
13562995220,7cyclictest9-21ksoftirqd/023:35:180
13562995218,7cyclictest9-21ksoftirqd/020:30:180
13562995218,3cyclictest9-21ksoftirqd/022:45:290
13562995210,3cyclictest9-21ksoftirqd/020:45:230
1356299520,8cyclictest766-21gdbus23:20:000
134491520,4ptp4l0-21swapper/323:28:463
134491520,4ptp4l0-21swapper/319:37:063
134491520,4ptp4l0-21swapper/223:40:232
134491520,4ptp4l0-21swapper/221:06:422
134491520,3ptp4l0-21swapper/223:45:312
13563995120,4cyclictest25-21ksoftirqd/121:50:141
13563995119,4cyclictest25-21ksoftirqd/122:31:051
13563995115,10cyclictest25-21ksoftirqd/122:25:161
1356299517,4cyclictest9-21ksoftirqd/023:55:140
13562995120,4cyclictest9-21ksoftirqd/022:15:280
134491510,4ptp4l0-21swapper/320:50:223
134491510,4ptp4l0-21swapper/319:54:323
134491510,4ptp4l0-21swapper/019:09:280
13563995034,4cyclictest25-21ksoftirqd/123:40:001
13563995034,4cyclictest25-21ksoftirqd/119:45:011
13563995018,4cyclictest25-21ksoftirqd/121:25:191
13563995018,4cyclictest25-21ksoftirqd/100:35:001
13563995017,4cyclictest25-21ksoftirqd/123:47:061
13563995017,4cyclictest25-21ksoftirqd/100:35:151
13563995017,3cyclictest25-21ksoftirqd/123:50:261
1356299506,3cyclictest19559-21kworker/0:200:22:490
134491500,4ptp4l0-21swapper/322:05:093
134491500,4ptp4l0-21swapper/222:15:432
134491500,4ptp4l0-21swapper/200:06:252
134491500,3ptp4l0-21swapper/322:15:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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