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2026-03-28 - 17:44
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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 Sat Mar 28, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2551821600,4sleep10-21swapper/107:05:161
44342730,4sleep00-21swapper/008:40:150
134491630,5ptp4l0-21swapper/012:35:220
134491630,4ptp4l0-21swapper/011:58:050
134491620,3ptp4l15901-21hddtemp_smartct07:55:170
134491610,7ptp4l26543-21chrt07:07:000
134491610,4ptp4l8154-21apt-get12:15:031
134491600,4ptp4l0-21swapper/207:52:172
134491600,4ptp4l0-21swapper/008:45:200
134491590,4ptp4l0-21swapper/012:10:200
134491590,3ptp4l0-21swapper/012:30:260
2707299582,54cyclictest0-21swapper/207:15:292
134491580,3ptp4l0-21swapper/011:35:260
27071995710,45cyclictest15738-21kworker/1:110:12:291
134491570,3ptp4l0-21swapper/211:58:032
134491570,2ptp4l0-21swapper/009:30:150
134491560,4ptp4l0-21swapper/007:38:370
134491560,3ptp4l0-21swapper/011:53:240
134491550,4ptp4l0-21swapper/012:24:500
134491550,4ptp4l0-21swapper/010:40:030
134491540,5ptp4l0-21swapper/010:35:460
134491540,4ptp4l0-21swapper/209:47:042
134491540,3ptp4l0-21swapper/008:55:210
134491540,3ptp4l0-21swapper/008:50:260
134491540,3ptp4l0-21swapper/008:20:190
134491540,3ptp4l0-21swapper/008:05:250
134491530,4ptp4l0-21swapper/012:04:430
134491530,4ptp4l0-21swapper/011:46:340
134491530,4ptp4l0-21swapper/007:41:120
134491520,5ptp4l0-21swapper/207:33:152
134491520,5ptp4l0-21swapper/207:33:152
134491520,3ptp4l0-21swapper/009:05:380
134491510,4ptp4l0-21swapper/211:10:042
134491510,4ptp4l0-21swapper/208:31:142
134491510,4ptp4l0-21swapper/011:31:110
134491500,4ptp4l0-21swapper/311:47:113
134491500,4ptp4l0-21swapper/212:07:232
134491500,4ptp4l0-21swapper/209:42:562
134491500,4ptp4l0-21swapper/209:17:342
134491500,4ptp4l0-21swapper/208:56:422
134491500,4ptp4l0-21swapper/012:29:000
134491500,4ptp4l0-21swapper/008:16:230
134491500,3ptp4l0-21swapper/111:47:241
134491490,4ptp4l0-21swapper/308:21:213
134491490,4ptp4l0-21swapper/211:49:592
134491490,4ptp4l0-21swapper/010:34:350
134491490,4ptp4l0-21swapper/010:26:400
134491490,4ptp4l0-21swapper/010:26:400
134491490,3ptp4l0-21swapper/208:40:192
134491490,3ptp4l0-21swapper/207:24:412
134491480,4ptp4l0-21swapper/207:28:282
134491480,3ptp4l0-21swapper/011:15:290
134491480,3ptp4l0-21swapper/011:15:290
134491480,3ptp4l0-21swapper/009:25:130
134491470,4ptp4l0-21swapper/209:07:012
134491470,4ptp4l0-21swapper/012:09:280
134491470,4ptp4l0-21swapper/011:05:350
134491470,4ptp4l0-21swapper/007:10:420
134491470,3ptp4l0-21swapper/209:56:052
134491470,3ptp4l0-21swapper/009:43:030
134491470,3ptp4l0-21swapper/009:20:210
134491470,3ptp4l0-21swapper/007:50:140
134491460,4ptp4l0-21swapper/308:25:103
134491460,4ptp4l0-21swapper/010:06:060
134491460,3ptp4l0-21swapper/211:04:552
134491460,3ptp4l0-21swapper/108:37:391
134491460,3ptp4l0-21swapper/011:26:090
134491460,3ptp4l0-21swapper/010:20:100
2707399450,2cyclictest121rcu_preempt07:55:583
1378914520,19phc2sys26822-21ls07:10:012
134491450,3ptp4l0-21swapper/209:01:462
134491450,3ptp4l0-21swapper/207:37:202
134491450,3ptp4l0-21swapper/111:55:241
134491450,3ptp4l0-21swapper/111:25:241
134491450,3ptp4l0-21swapper/110:02:051
134491450,3ptp4l0-21swapper/107:53:201
2707299441,41cyclictest0-21swapper/212:33:392
2707199448,34cyclictest15738-21kworker/1:110:35:491
27071994414,28cyclictest0-21swapper/111:15:591
27071994414,28cyclictest0-21swapper/111:15:591
134491440,5ptp4l5508-21df11:00:130
134491440,3ptp4l10111-21apt-get11:10:110
134491440,3ptp4l0-21swapper/208:17:252
134491440,3ptp4l0-21swapper/010:57:530
134491440,10ptp4l0-21swapper/309:53:383
134691430,8getstats2707199cyclictest09:24:511
134491430,4ptp4l32148-21hddtemp_smartct07:20:170
134491430,3ptp4l0-21swapper/111:03:001
134491430,13ptp4l0-21swapper/309:45:353
27073994237,3cyclictest41-21ksoftirqd/310:40:013
27073994237,3cyclictest41-21ksoftirqd/308:45:003
27073994237,3cyclictest41-21ksoftirqd/308:35:003
2707199421,39cyclictest0-21swapper/110:16:281
134491420,9ptp4l0-21swapper/210:59:152
134491420,9ptp4l0-21swapper/010:54:330
134491420,5ptp4l0-21swapper/307:25:133
134491420,5ptp4l0-21swapper/107:55:291
134491420,5ptp4l0-21swapper/010:14:580
134491420,4ptp4l8630-21apt-get10:00:042
134491420,4ptp4l30521-21ntp_states07:15:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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