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2026-06-23 - 04:30
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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 Jun 23, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1340799698,17cyclictest24579-21sshd00:10:221
1340799655,17cyclictest13089-21cat23:45:261
134491640,3ptp4l30983-21irqstats22:05:203
1340799648,11cyclictest8476-21grep21:15:271
1340799634,17cyclictest21705-21cut00:05:191
134491610,4ptp4l0-21swapper/000:00:270
134491610,18ptp4l12021-21fw_packets22:35:170
1340799617,16cyclictest32141-21chrt00:26:231
134491600,3ptp4l0-21swapper/100:00:291
1340799609,9cyclictest15578-21unixbench_singl22:40:271
1340799596,10cyclictest28076-21/usr/sbin/munin00:20:161
134491580,3ptp4l0-21swapper/321:10:323
134491580,3ptp4l0-21swapper/220:20:262
134491570,17ptp4l31086-21meminfo22:05:210
1340799576,11cyclictest0-21swapper/121:07:431
1340799575,11cyclictest11511-21latency_hist22:35:001
1340799572,11cyclictest4676-21latency_hist22:20:011
134491560,3ptp4l0-21swapper/321:34:593
134491560,3ptp4l0-21swapper/123:10:261
134491560,3ptp4l0-21swapper/120:30:241
13408995622,4cyclictest33-21ksoftirqd/222:12:342
1340799565,16cyclictest1-21systemd19:15:241
1340799565,10cyclictest5635-21cat20:00:311
1340799563,11cyclictest23673-21cut21:50:191
1340799563,11cyclictest23673-21cut21:50:191
255012550,4sleep10-21swapper/120:45:141
134491550,4ptp4l0-21swapper/021:35:160
134491550,3ptp4l0-21swapper/320:25:313
134491550,3ptp4l0-21swapper/319:48:313
134491550,3ptp4l0-21swapper/319:17:543
13408995520,4cyclictest33-21ksoftirqd/222:19:022
1340799559,12cyclictest6380-21taskset23:31:101
134491540,4ptp4l0-21swapper/300:35:113
134491540,4ptp4l0-21swapper/223:30:312
1340799546,12cyclictest0-21swapper/120:58:051
1340799542,10cyclictest0-21swapper/121:35:191
134491530,4ptp4l0-21swapper/323:50:433
134491530,4ptp4l0-21swapper/319:27:543
134491530,4ptp4l0-21swapper/019:35:270
134491530,3ptp4l0-21swapper/323:39:443
134491520,6ptp4l0-21swapper/320:10:583
134491520,4ptp4l0-21swapper/323:03:543
134491520,4ptp4l0-21swapper/023:09:590
134491520,4ptp4l0-21swapper/022:52:460
13408995222,3cyclictest33-21ksoftirqd/220:36:442
13408995213,6cyclictest33-21ksoftirqd/222:20:272
1340799524,15cyclictest21288-21ps20:35:171
134491510,4ptp4l0-21swapper/319:44:253
134491510,4ptp4l0-21swapper/300:17:223
134491510,3ptp4l0-21swapper/323:17:393
134491510,3ptp4l0-21swapper/323:17:393
13408995121,4cyclictest33-21ksoftirqd/223:37:532
13408995120,5cyclictest33-21ksoftirqd/221:04:042
13408995119,4cyclictest33-21ksoftirqd/221:07:592
13408995117,6cyclictest33-21ksoftirqd/200:05:232
13408995114,4cyclictest33-21ksoftirqd/221:32:502
1340799515,10cyclictest23739-21sed23:00:201
134491500,5ptp4l0-21swapper/319:06:543
134491500,4ptp4l0-21swapper/220:02:142
134491500,4ptp4l0-21swapper/022:43:450
134491500,3ptp4l0-21swapper/321:20:423
13408995019,3cyclictest33-21ksoftirqd/223:41:002
13408995018,6cyclictest33-21ksoftirqd/222:35:292
13408995017,6cyclictest33-21ksoftirqd/222:50:242
13408995016,6cyclictest33-21ksoftirqd/221:25:172
1340799507,11cyclictest0-21swapper/121:44:301
134491490,4ptp4l0-21swapper/320:00:453
134491490,4ptp4l0-21swapper/219:34:502
134491490,3ptp4l0-21swapper/322:20:153
1340899496,9cyclictest33-21ksoftirqd/220:20:012
13408994920,4cyclictest33-21ksoftirqd/222:44:002
13408994919,4cyclictest33-21ksoftirqd/219:35:492
13408994917,4cyclictest33-21ksoftirqd/221:14:542
13408994917,4cyclictest33-21ksoftirqd/220:29:002
13408994917,3cyclictest33-21ksoftirqd/223:46:482
13408994914,6cyclictest33-21ksoftirqd/223:00:282
13408994914,4cyclictest33-21ksoftirqd/223:15:182
13408994914,4cyclictest33-21ksoftirqd/223:15:182
1340799497,8cyclictest17272-21ntp_states23:55:231
1340799497,11cyclictest0-21swapper/121:28:371
1340799495,10cyclictest22031-21cat21:45:231
134491480,5ptp4l0-21swapper/221:35:152
134491480,5ptp4l0-21swapper/019:08:260
134491480,4ptp4l0-21swapper/319:51:063
134491480,4ptp4l0-21swapper/000:32:330
134491480,11ptp4l0-21swapper/000:06:150
13408994819,4cyclictest33-21ksoftirqd/223:00:002
13408994818,6cyclictest33-21ksoftirqd/220:11:202
13408994816,4cyclictest33-21ksoftirqd/221:40:552
13408994814,5cyclictest33-21ksoftirqd/220:30:262
1340799486,17cyclictest7509-21iostat_ios23:35:181
134491470,6ptp4l0-21swapper/219:06:242
134491470,4ptp4l0-21swapper/300:24:113
13408994719,7cyclictest33-21ksoftirqd/219:10:342
13408994717,3cyclictest33-21ksoftirqd/220:57:382
13408994714,5cyclictest33-21ksoftirqd/219:50:232
13408994714,4cyclictest33-21ksoftirqd/200:20:232
1340899471,2cyclictest121rcu_preempt21:20:582
1340799478,7cyclictest134491ptp4l21:21:151
1340799477,6cyclictest0-21swapper/123:25:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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