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2026-06-24 - 10:49
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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 Wed Jun 24, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207121180,4sleep02073-21df_abs19:05:140
134491670,22ptp4l30307-21/usr/sbin/munin22:25:183
134491650,3ptp4l5545-21ls22:40:213
4233996329,4cyclictest9-21ksoftirqd/022:15:320
134491620,5ptp4l0-21swapper/219:09:272
134491620,17ptp4l3247-21python19:05:241
423499609,17cyclictest22436-21seq23:17:021
423499609,13cyclictest22556-21seq20:59:501
423499608,12cyclictest31559-21taskset21:16:301
134491600,16ptp4l0-21swapper/219:57:012
423499599,13cyclictest8741-21taskset20:29:361
423499599,11cyclictest23431-21seq00:29:401
423499598,11cyclictest3826-21chrt22:35:271
423499598,11cyclictest24722-21taskset21:02:101
423499596,11cyclictest1993-21chrt23:44:071
4234995910,11cyclictest25081-21cat22:14:561
134491590,4ptp4l0-21swapper/319:10:173
423499589,17cyclictest29368-21seq22:20:501
423499589,12cyclictest22347-21taskset19:46:161
423499589,11cyclictest8739-21seq21:37:451
423499588,12cyclictest13382-21chrt21:48:091
423499587,12cyclictest22729-21cat22:09:551
423499586,11cyclictest27048-21chrt19:56:571
24322580,6sleep341-21ksoftirqd/319:05:163
134491580,4ptp4l0-21swapper/320:03:263
423499579,17cyclictest27103-21seq22:16:251
423499579,11cyclictest3903-21chrt20:16:511
423499578,11cyclictest18276-21taskset19:40:061
423499578,11cyclictest15603-21taskset20:44:011
423499577,11cyclictest6457-21chrt23:51:421
423499577,11cyclictest11279-21chrt00:01:371
423499575,11cyclictest6228-21taskset21:32:441
423499575,11cyclictest15633-21chrt21:52:351
423499574,11cyclictest163402sleep100:12:201
4234995710,12cyclictest29568-21seq23:31:261
4234995710,10cyclictest17679-21seq19:35:341
4233995729,4cyclictest9-21ksoftirqd/019:20:230
134491570,5ptp4l0-21swapper/320:14:393
134491570,4ptp4l24223-21phc2sys-jitter22:10:233
134491570,4ptp4l0-21swapper/220:52:362
134491570,3ptp4l0-21swapper/022:46:020
4235995623,5cyclictest33-21ksoftirqd/200:10:152
4235995621,5cyclictest33-21ksoftirqd/223:38:072
423499569,15cyclictest4402-21seq23:49:521
423499569,11cyclictest32128-21seq23:39:521
423499569,11cyclictest13095-21seq20:36:311
423499568,11cyclictest25724-21seq00:34:371
423499567,11cyclictest6136-21vmstat20:20:381
4234995610,17cyclictest20104-21seq20:52:481
4233995630,4cyclictest9-21ksoftirqd/022:05:270
4235995522,4cyclictest33-21ksoftirqd/221:27:442
423499559,12cyclictest20150-21taskset22:01:191
423499559,10cyclictest10894-21seq21:40:461
423499558,11cyclictest1708-21seq22:32:371
423499557,9cyclictest8466-21chrt19:18:091
423399555,8cyclictest9-21ksoftirqd/019:15:150
423399554,9cyclictest9-21ksoftirqd/019:10:210
423399552,6cyclictest9-21ksoftirqd/019:50:010
4233995525,4cyclictest9-21ksoftirqd/019:50:270
423399550,7cyclictest18190-21sendmail-msp22:00:000
134491550,3ptp4l0-21swapper/000:39:220
4235995419,4cyclictest33-21ksoftirqd/200:36:522
423499549,11cyclictest29423-21seq20:02:411
423499549,11cyclictest27317-21runrttasks23:29:491
423499548,11cyclictest8809-21taskset23:57:251
423499548,10cyclictest21012-21chrt00:23:031
423499548,10cyclictest21012-21chrt00:23:031
423499547,12cyclictest31854-21taskset22:28:091
423499547,11cyclictest3793-21chrt21:25:591
423499546,11cyclictest1770-21seq20:14:411
423499546,10cyclictest15572-21chrt23:02:231
423399546,8cyclictest9-21ksoftirqd/023:30:140
423399545,8cyclictest9-21ksoftirqd/022:25:240
423399545,8cyclictest9-21ksoftirqd/020:25:270
423399545,8cyclictest9-21ksoftirqd/020:10:160
423399544,8cyclictest9-21ksoftirqd/023:45:000
423399544,8cyclictest9-21ksoftirqd/023:10:150
423399544,8cyclictest9-21ksoftirqd/019:35:300
423399543,6cyclictest9-21ksoftirqd/022:45:000
4233995422,7cyclictest9-21ksoftirqd/021:36:480
423399540,14cyclictest9-21ksoftirqd/020:15:250
134491540,3ptp4l0-21swapper/300:16:363
4235995327,7cyclictest33-21ksoftirqd/221:32:372
4235995324,3cyclictest33-21ksoftirqd/219:41:042
4235995323,4cyclictest33-21ksoftirqd/223:52:332
4235995322,9cyclictest33-21ksoftirqd/223:03:352
4235995322,5cyclictest33-21ksoftirqd/221:00:222
4235995318,6cyclictest33-21ksoftirqd/219:30:252
4235995318,4cyclictest33-21ksoftirqd/219:37:582
4235995316,10cyclictest33-21ksoftirqd/222:35:182
423499539,11cyclictest10859-21taskset20:32:171
423499538,11cyclictest6064-21taskset19:11:501
423499538,11cyclictest1437-21chrt21:21:011
423499538,11cyclictest13221-21chrt22:56:581
423499537,12cyclictest27467-21chrt21:10:021
423499536,9cyclictest13144-21taskset19:29:011
423499534,9cyclictest25204-21chrt21:05:131
4234995311,5cyclictest25-21ksoftirqd/119:30:211
423399535,8cyclictest9-21ksoftirqd/020:55:000
423399533,5cyclictest9-21ksoftirqd/023:25:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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