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2026-05-26 - 04:42
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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 Tue May 26, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
831221450,5sleep11434199cyclictest21:15:141
284692770,3sleep128471-21grep21:55:301
284692770,3sleep128471-21grep21:55:301
134491740,2ptp4l9-21ksoftirqd/023:45:230
134491700,5ptp4l0-21swapper/220:20:112
1434399654,18cyclictest29011-21/usr/sbin/munin20:50:163
14340996530,4cyclictest9-21ksoftirqd/023:55:140
43072640,4sleep11434199cyclictest00:35:001
134491600,5ptp4l0-21swapper/119:05:231
134491600,4ptp4l31848-21apt-get23:15:132
1434399596,6cyclictest18590-21phc2sys-jitter21:35:233
1434399586,6cyclictest0-21swapper/300:10:213
134491580,4ptp4l0-21swapper/319:27:163
1434399577,6cyclictest0-21swapper/322:05:263
14343995730,9cyclictest41-21ksoftirqd/321:05:173
1434099570,6cyclictest990-21sed21:00:000
134491570,4ptp4l0-21swapper/200:36:552
134491570,3ptp4l0-21swapper/119:35:141
1434399567,6cyclictest4182-21tail19:55:243
1434399567,6cyclictest0-21swapper/323:53:583
134491560,4ptp4l0-21swapper/020:30:260
50822550,3sleep10-21swapper/121:05:271
1434399557,7cyclictest0-21swapper/323:57:393
1434399556,6cyclictest0-21swapper/322:40:253
1434099553,5cyclictest9-21ksoftirqd/020:20:170
1434399546,6cyclictest0-21swapper/320:55:163
1434399543,5cyclictest41-21ksoftirqd/319:40:173
1434099542,5cyclictest0-21swapper/023:30:130
1434099542,5cyclictest0-21swapper/023:30:120
1434099542,5cyclictest0-21swapper/000:10:220
134491540,4ptp4l0-21swapper/222:01:092
134491540,3ptp4l0-21swapper/123:00:481
134491540,3ptp4l0-21swapper/122:25:241
1434399537,5cyclictest22126-21cat21:45:133
1434399532,6cyclictest24208-21latency_hist20:40:003
1434399532,6cyclictest19379-21grep22:45:273
134491530,4ptp4l0-21swapper/122:57:041
134491530,4ptp4l0-21swapper/121:13:291
134491530,4ptp4l0-21swapper/119:11:391
1434399527,6cyclictest0-21swapper/319:50:243
1434399527,6cyclictest0-21swapper/300:20:373
1434099525,12cyclictest0-21swapper/022:30:250
1434099523,6cyclictest101ktimersoftd/019:20:000
1434099520,5cyclictest32572-21sshd19:47:110
134491520,4ptp4l0-21swapper/221:05:192
1434399511,10cyclictest25621-21proc_pri20:40:233
1434099512,7cyclictest0-21swapper/020:25:240
1434099511,5cyclictest0-21swapper/023:30:000
1434099510,6cyclictest0-21swapper/023:50:160
134491510,4ptp4l0-21swapper/123:38:381
134491510,4ptp4l0-21swapper/123:07:211
134491510,4ptp4l0-21swapper/123:07:211
134491510,4ptp4l0-21swapper/120:41:411
1434399508,7cyclictest0-21swapper/319:45:233
1434399508,6cyclictest0-21swapper/300:15:263
1434399507,6cyclictest0-21swapper/320:05:283
1434399507,6cyclictest0-21swapper/319:37:023
1434399501,6cyclictest19748-21/usr/sbin/munin20:30:153
1434299502,2cyclictest121rcu_preempt23:13:582
1434099504,5cyclictest26967-21strings19:35:210
1434099503,6cyclictest101ktimersoftd/022:00:010
1434099503,6cyclictest101ktimersoftd/022:00:010
1434099502,12cyclictest0-21swapper/021:35:250
1434099501,6cyclictest0-21swapper/021:00:160
1434099500,7cyclictest101ktimersoftd/020:00:250
1434099500,6cyclictest0-21swapper/020:15:170
1434099500,5cyclictest3352-21runrttasks19:55:140
134491500,4ptp4l0-21swapper/220:14:002
134491500,4ptp4l0-21swapper/122:00:441
1434399495,6cyclictest1301-21snmpd21:40:133
1434399492,6cyclictest0-21swapper/322:35:233
1434399492,6cyclictest0-21swapper/322:35:233
1434399490,7cyclictest41-21ksoftirqd/321:55:273
1434399490,7cyclictest41-21ksoftirqd/321:55:273
14342994930,17cyclictest33-21ksoftirqd/222:45:012
1434099492,7cyclictest0-21swapper/019:50:250
1434099492,6cyclictest0-21swapper/023:20:280
1434099492,6cyclictest0-21swapper/020:40:140
1434099492,5cyclictest0-21swapper/000:15:290
1434099491,9cyclictest9-21ksoftirqd/022:40:210
1434099491,5cyclictest9-21ksoftirqd/022:25:170
134491490,12ptp4l0-21swapper/120:10:301
1434399485,6cyclictest11316-21missed_timers20:10:223
1434399484,6cyclictest0-21swapper/322:30:173
1434399482,7cyclictest401ktimersoftd/300:05:193
1434399482,6cyclictest0-21swapper/322:20:583
1434399482,6cyclictest0-21swapper/321:15:213
1434399482,5cyclictest0-21swapper/322:15:193
1434399480,7cyclictest41-21ksoftirqd/321:30:243
1434299482,2cyclictest121rcu_preempt23:56:582
1434299482,2cyclictest121rcu_preempt23:07:592
1434299482,2cyclictest121rcu_preempt23:07:592
1434299482,2cyclictest121rcu_preempt22:11:592
1434299482,2cyclictest121rcu_preempt22:07:592
1434299482,2cyclictest121rcu_preempt21:51:592
1434299482,2cyclictest121rcu_preempt20:56:582
1434299481,2cyclictest121rcu_preempt23:42:582
1434099483,6cyclictest5189-21sed00:35:190
1434099482,6cyclictest0-21swapper/022:45:270
1434099482,5cyclictest0-21swapper/023:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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