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2026-03-25 - 04:46
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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 Mar 25, 2026 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491700,4ptp4l0-21swapper/219:50:192
7007996229,6cyclictest25-21ksoftirqd/123:30:241
7007996127,4cyclictest25-21ksoftirqd/123:25:261
7007996124,6cyclictest25-21ksoftirqd/121:20:131
134491610,4ptp4l15421-21open_inodes21:45:250
134491610,4ptp4l15421-21open_inodes21:45:250
700799592,12cyclictest0-21swapper/122:30:131
700799591,56cyclictest11372-21kworker/1:020:01:091
134491590,5ptp4l0-21swapper/023:15:250
134491590,4ptp4l0-21swapper/121:00:571
7007995827,6cyclictest25-21ksoftirqd/100:05:241
700799582,16cyclictest29133-21sed22:15:201
134491580,4ptp4l0-21swapper/222:49:102
7007995729,10cyclictest25-21ksoftirqd/122:50:291
313632570,4sleep20-21swapper/221:10:232
134491560,5ptp4l0-21swapper/019:09:530
134491560,4ptp4l0-21swapper/200:06:192
7008995539,8cyclictest33-21ksoftirqd/223:59:592
700799555,11cyclictest0-21swapper/121:56:581
7007995519,8cyclictest25-21ksoftirqd/120:20:581
7007995519,4cyclictest25-21ksoftirqd/119:48:091
205002550,5sleep233-21ksoftirqd/200:15:242
134491550,4ptp4l0-21swapper/323:19:223
134491550,3ptp4l0-21swapper/020:43:420
7007995419,4cyclictest25-21ksoftirqd/120:08:541
134491540,3ptp4l0-21swapper/022:24:430
700799533,7cyclictest0-21swapper/120:40:151
700799532,6cyclictest0-21swapper/122:40:231
700799531,6cyclictest25-21ksoftirqd/119:35:171
134491530,3ptp4l0-21swapper/322:30:133
134491530,3ptp4l0-21swapper/000:35:240
700799524,6cyclictest0-21swapper/100:20:251
700799522,6cyclictest0-21swapper/120:10:211
700799520,7cyclictest25-21ksoftirqd/121:30:251
134491520,4ptp4l0-21swapper/319:23:273
134491520,4ptp4l0-21swapper/220:49:122
134491520,12ptp4l0-21swapper/300:39:193
700799512,8cyclictest0-21swapper/120:25:121
700799512,11cyclictest0-21swapper/100:10:241
134491510,4ptp4l0-21swapper/220:36:292
134491510,3ptp4l0-21swapper/300:01:063
134491510,3ptp4l0-21swapper/119:10:191
134491510,3ptp4l0-21swapper/019:39:250
134491510,10ptp4l4980-21diskstats19:05:161
700799502,6cyclictest25-21ksoftirqd/123:45:011
7007995018,4cyclictest25-21ksoftirqd/121:35:401
134491500,11ptp4l0-21swapper/322:45:123
700799496,10cyclictest0-21swapper/123:52:441
700799495,6cyclictest0-21swapper/100:01:181
700799492,5cyclictest25-21ksoftirqd/120:30:261
134491490,4ptp4l0-21swapper/320:04:503
134491490,4ptp4l0-21swapper/319:46:113
134491490,4ptp4l0-21swapper/220:03:302
134491490,4ptp4l0-21swapper/219:42:052
134491490,4ptp4l0-21swapper/000:03:460
134491490,11ptp4l0-21swapper/223:26:512
7008994816,5cyclictest33-21ksoftirqd/200:25:232
700799484,6cyclictest0-21swapper/122:06:201
700799484,2cyclictest0-21swapper/121:40:241
700799480,7cyclictest25-21ksoftirqd/119:20:191
700799480,6cyclictest25-21ksoftirqd/119:55:261
134491480,4ptp4l0-21swapper/319:27:193
134491480,4ptp4l0-21swapper/319:27:193
134491480,4ptp4l0-21swapper/023:35:110
134491480,4ptp4l0-21swapper/023:35:100
134491480,4ptp4l0-21swapper/023:11:370
134491480,3ptp4l0-21swapper/123:12:001
134491480,3ptp4l0-21swapper/023:29:530
7008994717,5cyclictest33-21ksoftirqd/222:07:562
700799474,6cyclictest25-21ksoftirqd/123:35:151
700799474,6cyclictest25-21ksoftirqd/123:35:141
700799472,10cyclictest0-21swapper/122:00:251
700799470,6cyclictest25-21ksoftirqd/121:15:171
700799470,5cyclictest26223-21hddtemp_smartct23:20:161
134491470,4ptp4l0-21swapper/320:08:403
134491470,4ptp4l0-21swapper/223:24:062
134491470,4ptp4l0-21swapper/220:29:412
134491470,4ptp4l0-21swapper/000:34:140
134491470,13ptp4l0-21swapper/020:49:410
7008994615,4cyclictest33-21ksoftirqd/222:53:022
700799465,7cyclictest19729-21grep20:45:191
700799464,6cyclictest0-21swapper/122:35:521
700799464,6cyclictest0-21swapper/120:37:501
700799462,6cyclictest25-21ksoftirqd/100:25:191
700799462,11cyclictest0-21swapper/120:15:191
7007994616,6cyclictest25-21ksoftirqd/119:31:591
700799461,5cyclictest25-21ksoftirqd/122:20:241
700799460,7cyclictest25-21ksoftirqd/123:45:201
700799460,7cyclictest25-21ksoftirqd/121:45:141
700799460,7cyclictest25-21ksoftirqd/121:45:141
134491460,4ptp4l0-21swapper/319:55:133
134491460,4ptp4l0-21swapper/219:36:022
134491460,4ptp4l0-21swapper/022:53:370
134491460,4ptp4l0-21swapper/019:44:590
134491460,3ptp4l0-21swapper/219:22:532
134491460,3ptp4l0-21swapper/000:15:260
700899459,8cyclictest33-21ksoftirqd/223:03:332
7008994531,12cyclictest33-21ksoftirqd/223:45:002
7008994513,4cyclictest33-21ksoftirqd/222:17:322
700899451,2cyclictest121rcu_preempt22:55:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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