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2026-04-26 - 17:28
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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 Apr 26, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1476221590,7sleep11520499cyclictest10:35:241
3000721240,4sleep31520699cyclictest07:40:223
15204996822,6cyclictest25-21ksoftirqd/111:20:001
15204996722,6cyclictest25-21ksoftirqd/108:50:011
15204996722,6cyclictest25-21ksoftirqd/108:50:011
15204996532,7cyclictest25-21ksoftirqd/110:55:261
15204996531,7cyclictest25-21ksoftirqd/108:00:191
15205996422,10cyclictest33-21ksoftirqd/211:45:252
15205996416,5cyclictest33-21ksoftirqd/209:50:002
15205996416,5cyclictest33-21ksoftirqd/209:50:002
134491640,4ptp4l0-21swapper/209:27:512
15205996325,4cyclictest33-21ksoftirqd/209:20:292
15205996216,5cyclictest33-21ksoftirqd/207:45:132
15205996125,7cyclictest33-21ksoftirqd/208:50:462
15205996121,6cyclictest33-21ksoftirqd/208:15:012
15204996129,9cyclictest25-21ksoftirqd/107:45:001
15204996028,4cyclictest25-21ksoftirqd/109:10:271
15204996019,5cyclictest25-21ksoftirqd/108:15:281
134491600,5ptp4l0-21swapper/107:09:541
134491600,5ptp4l0-21swapper/107:09:541
15205995932,9cyclictest33-21ksoftirqd/211:39:592
15204995931,6cyclictest25-21ksoftirqd/109:05:171
1520399596,9cyclictest9-21ksoftirqd/007:35:000
134491590,4ptp4l0-21swapper/212:00:172
1520599588,10cyclictest33-21ksoftirqd/209:10:222
15205995811,8cyclictest33-21ksoftirqd/210:00:262
15204995831,4cyclictest25-21ksoftirqd/110:00:181
1520399585,9cyclictest9-21ksoftirqd/012:20:230
134491580,3ptp4l0-21swapper/309:10:233
15205995735,10cyclictest33-21ksoftirqd/211:30:162
15205995722,5cyclictest33-21ksoftirqd/208:20:282
15205995713,9cyclictest33-21ksoftirqd/212:00:002
15204995724,7cyclictest25-21ksoftirqd/109:00:261
15204995723,3cyclictest25-21ksoftirqd/108:55:221
15204995720,7cyclictest25-21ksoftirqd/111:35:001
1520399575,9cyclictest9-21ksoftirqd/011:50:130
1520399575,10cyclictest9-21ksoftirqd/011:55:140
15203995730,4cyclictest9-21ksoftirqd/007:27:480
134491570,3ptp4l0-21swapper/212:38:102
134491570,3ptp4l0-21swapper/012:05:010
15205995622,12cyclictest33-21ksoftirqd/208:38:592
15205995612,5cyclictest33-21ksoftirqd/211:40:032
15205995611,5cyclictest33-21ksoftirqd/207:40:202
15204995626,8cyclictest25-21ksoftirqd/107:30:251
15204995611,3cyclictest121rcu_preempt09:30:211
1520399565,9cyclictest9-21ksoftirqd/012:35:230
134491560,4ptp4l0-21swapper/210:40:092
134491560,3ptp4l0-21swapper/309:54:563
134491560,14ptp4l13391-21if_err_enp1s007:05:180
134491560,14ptp4l13391-21if_err_enp1s007:05:180
15206995523,3cyclictest41-21ksoftirqd/312:20:103
15205995519,11cyclictest33-21ksoftirqd/208:41:112
15205995510,4cyclictest33-21ksoftirqd/209:35:162
1520499553,10cyclictest25-21ksoftirqd/109:50:011
15204995526,8cyclictest25-21ksoftirqd/111:25:191
15204995526,8cyclictest25-21ksoftirqd/109:40:171
15204995524,4cyclictest25-21ksoftirqd/107:10:201
1520399556,8cyclictest16420-21grep10:40:150
1520399555,9cyclictest9-21ksoftirqd/012:10:220
1520399555,10cyclictest9-21ksoftirqd/009:45:200
1520399555,10cyclictest9-21ksoftirqd/009:45:200
15203995521,6cyclictest9-21ksoftirqd/008:56:000
134491550,4ptp4l0-21swapper/307:57:333
134491550,3ptp4l0-21swapper/310:35:283
134491550,3ptp4l0-21swapper/210:10:242
1520499543,10cyclictest25-21ksoftirqd/109:45:281
1520499543,10cyclictest25-21ksoftirqd/109:45:281
1520499543,10cyclictest25-21ksoftirqd/107:25:261
15204995427,8cyclictest25-21ksoftirqd/110:45:201
15204995425,6cyclictest25-21ksoftirqd/110:30:271
1520399546,9cyclictest9-21ksoftirqd/007:12:070
1520399542,5cyclictest0-21swapper/012:20:000
134491540,3ptp4l1489-21/usr/sbin/munin09:00:263
15205995322,3cyclictest33-21ksoftirqd/210:39:592
15205995313,9cyclictest33-21ksoftirqd/209:30:502
15205995312,10cyclictest33-21ksoftirqd/212:08:282
15205995312,10cyclictest33-21ksoftirqd/207:54:552
15205995311,9cyclictest33-21ksoftirqd/209:16:262
15205995310,10cyclictest33-21ksoftirqd/207:11:462
1520499533,8cyclictest25-21ksoftirqd/109:35:191
1520499532,8cyclictest25-21ksoftirqd/108:25:201
15204995320,3cyclictest25-21ksoftirqd/107:18:081
1520399535,9cyclictest9-21ksoftirqd/011:10:010
1520399535,8cyclictest9-21ksoftirqd/012:30:130
1520399534,9cyclictest9-21ksoftirqd/009:40:190
1520399534,7cyclictest9-21ksoftirqd/011:35:010
15203995322,3cyclictest9-21ksoftirqd/011:25:250
1520399530,7cyclictest2084-21grep11:20:010
134491530,4ptp4l3041-21ps12:30:182
134491530,4ptp4l0-21swapper/307:50:313
134491530,4ptp4l0-21swapper/211:54:392
134491530,4ptp4l0-21swapper/210:07:102
134491530,3ptp4l29265-21chrt09:59:023
134491530,3ptp4l0-21swapper/209:52:032
15205995232,10cyclictest33-21ksoftirqd/211:23:042
15205995221,10cyclictest33-21ksoftirqd/211:05:012
15205995218,8cyclictest33-21ksoftirqd/207:18:212
15205995217,11cyclictest33-21ksoftirqd/208:07:392
15205995215,5cyclictest33-21ksoftirqd/207:55:222
15205995211,10cyclictest33-21ksoftirqd/211:06:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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