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2026-06-08 - 11:25
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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 Mon Jun 08, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1116521500,5sleep31288299cyclictest22:30:283
1288299660,28cyclictest25274-21taskset21:53:513
1288299651,31cyclictest28146-21seq23:08:393
1288299650,26cyclictest20693-21sendmail-mta21:43:593
1288299640,29cyclictest8704-21taskset21:19:053
1288299640,28cyclictest3049-21taskset23:25:023
1288299640,28cyclictest30378-21taskset23:12:493
1288299640,28cyclictest27597-21taskset21:59:123
1288299631,28cyclictest30745-21taskset00:22:503
1288299631,27cyclictest28636-21seq19:40:363
1288299630,29cyclictest7195-21seq23:31:343
1288299630,28cyclictest752-21taskset00:29:403
1288299630,28cyclictest29672-21taskset22:01:103
1288299630,28cyclictest29330-21taskset20:54:453
1288299630,27cyclictest22937-21taskset21:48:213
1288299630,27cyclictest16586-21taskset23:53:493
1288299630,27cyclictest14709-21seq19:11:503
1288299630,27cyclictest11154-21taskset20:15:033
1288299630,27cyclictest11154-21taskset20:15:023
134491620,4ptp4l0-21swapper/321:00:073
134491620,4ptp4l0-21swapper/321:00:063
1288299620,28cyclictest6003-21taskset20:03:313
1288299620,27cyclictest12317-21taskset23:45:113
1288299620,26cyclictest31733-21seq19:50:113
1288299620,26cyclictest31445-21seq19:49:223
1288299620,26cyclictest2586-21taskset23:22:043
1288299620,26cyclictest24986-21taskset20:45:063
1288299611,26cyclictest23582-21taskset00:07:203
1288299610,32cyclictest25487-21seq23:01:493
1288299610,27cyclictest21871-21taskset19:27:213
1288299610,26cyclictest20760-21seq22:53:033
1288299610,25cyclictest10987-21taskset21:23:403
1288299600,27cyclictest9252-21taskset22:28:013
1288299600,26cyclictest23223-21taskset22:57:253
1288299600,26cyclictest18097-21taskset21:38:073
1288299600,25cyclictest4495-21apache222:41:573
134491590,4ptp4l0-21swapper/022:29:250
134491590,3ptp4l0-21swapper/200:35:162
1288299591,27cyclictest6623-21taskset22:21:303
1288299590,30cyclictest28532-21taskset00:19:053
1288299590,27cyclictest30729-21awk20:55:243
1288299590,27cyclictest18620-21seq23:55:333
290372580,5sleep20-21swapper/223:10:192
134491580,4ptp4l0-21swapper/023:53:540
134491580,3ptp4l0-21swapper/223:45:262
1288299581,30cyclictest16943-21taskset19:16:093
1288299580,25cyclictest4006-21runrttasks21:08:253
134491570,4ptp4l0-21swapper/000:20:330
1288299570,30cyclictest3671-21seq19:59:053
1288299570,28cyclictest19472-21taskset19:21:063
1288299570,28cyclictest19472-21taskset19:21:063
1288199577,12cyclictest0-21swapper/221:05:212
134491560,3ptp4l0-21swapper/322:10:173
134491560,3ptp4l0-21swapper/221:55:032
1288299560,27cyclictest15366-21taskset20:22:363
1288199563,11cyclictest0-21swapper/221:35:232
134491550,3ptp4l0-21swapper/320:06:233
134491550,3ptp4l0-21swapper/021:10:240
1288299552,20cyclictest0-21swapper/321:11:033
1288299550,27cyclictest30219-21/usr/sbin/munin22:05:233
1288299550,25cyclictest24462-21runrttasks20:41:203
1288199554,5cyclictest0-21swapper/222:55:142
134491540,10ptp4l10753-21df19:05:132
1288299542,20cyclictest0-21swapper/322:49:183
1288199546,13cyclictest0-21swapper/220:35:242
1288299532,20cyclictest0-21swapper/320:28:343
1288299530,31cyclictest5241-21runrttasks00:37:093
1288299530,22cyclictest242822sleep319:33:523
1288299530,22cyclictest221272sleep320:36:063
1288199535,7cyclictest0-21swapper/219:25:242
1288199535,11cyclictest0-21swapper/221:30:182
1288299520,25cyclictest21146-21runrttasks00:03:153
1288299520,23cyclictest133312sleep321:29:103
1288299520,22cyclictest325722chrt23:16:363
1288199525,10cyclictest0-21swapper/220:45:162
1288199523,12cyclictest0-21swapper/222:25:172
1288199522,10cyclictest0-21swapper/222:30:222
134491510,3ptp4l0-21swapper/122:20:261
1288299512,20cyclictest0-21swapper/300:14:153
1288299510,23cyclictest15791-21chrt21:33:313
1288199515,6cyclictest0-21swapper/220:20:232
1288199507,13cyclictest0-21swapper/219:20:282
1288199507,13cyclictest0-21swapper/219:20:282
134491490,3ptp4l0-21swapper/223:22:592
134491490,12ptp4l5068-21df22:20:130
134491480,3ptp4l0-21swapper/222:00:142
1288299482,21cyclictest0-21swapper/322:35:523
1288299482,19cyclictest0-21swapper/322:17:213
1288199483,6cyclictest0-21swapper/223:50:172
1288299470,24cyclictest20030-21taskset20:33:323
1288199475,11cyclictest0-21swapper/223:30:252
1288199474,11cyclictest0-21swapper/221:12:302
134491460,4ptp4l0-21swapper/219:31:462
134491460,3ptp4l0-21swapper/223:42:222
134491460,13ptp4l0-21swapper/220:05:202
134491460,10ptp4l0-21swapper/023:00:320
1288199467,11cyclictest0-21swapper/220:15:192
1288199467,11cyclictest0-21swapper/220:15:192
1288199464,6cyclictest0-21swapper/219:45:152
134491450,9ptp4l0-21swapper/020:55:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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