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2026-06-19 - 15:03
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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 Fri Jun 19, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2414121430,4sleep22788199cyclictest22:30:142
134491880,12ptp4l0-21swapper/221:55:292
319962690,10sleep031999-21unixbench_singl20:25:270
134491650,2ptp4l2939-21/usr/sbin/munin19:25:150
134491600,4ptp4l0-21swapper/021:10:160
134491600,3ptp4l0-21swapper/319:33:283
134491590,4ptp4l0-21swapper/021:05:160
27882995817,8cyclictest41-21ksoftirqd/300:25:263
134491580,4ptp4l0-21swapper/023:17:470
134491580,4ptp4l0-21swapper/019:20:060
134491580,4ptp4l0-21swapper/000:20:200
134491580,3ptp4l0-21swapper/100:10:211
302312570,5sleep00-21swapper/022:40:270
134491570,4ptp4l0-21swapper/123:45:171
134491570,4ptp4l0-21swapper/100:26:311
134491570,3ptp4l0-21swapper/123:16:571
134491570,3ptp4l0-21swapper/022:10:290
134491560,4ptp4l0-21swapper/123:30:141
134491560,3ptp4l19008-21apt-get21:10:132
27882995527,4cyclictest41-21ksoftirqd/320:37:173
134491550,5ptp4l0-21swapper/019:50:140
134491550,3ptp4l0-21swapper/121:29:561
134491540,4ptp4l0-21swapper/022:34:570
134491540,3ptp4l0-21swapper/220:23:362
134491530,4ptp4l0-21swapper/321:30:003
134491530,4ptp4l0-21swapper/300:07:463
134491530,4ptp4l0-21swapper/221:52:222
134491530,4ptp4l0-21swapper/219:08:352
134491530,4ptp4l0-21swapper/020:44:560
134491530,4ptp4l0-21swapper/019:30:300
134491530,11ptp4l0-21swapper/220:32:152
134491520,5ptp4l0-21swapper/221:42:322
134491520,4ptp4l0-21swapper/122:22:101
134491520,4ptp4l0-21swapper/119:31:221
134491520,4ptp4l0-21swapper/020:59:570
134491520,3ptp4l0-21swapper/323:00:353
27881995124,3cyclictest33-21ksoftirqd/223:15:272
134491510,4ptp4l0-21swapper/320:46:033
134491510,4ptp4l0-21swapper/123:11:411
134491510,4ptp4l0-21swapper/122:08:211
134491510,4ptp4l0-21swapper/120:56:051
134491510,4ptp4l0-21swapper/119:40:281
134491510,4ptp4l0-21swapper/022:54:540
134491510,4ptp4l0-21swapper/021:25:060
134491510,3ptp4l0-21swapper/219:47:372
134491510,3ptp4l0-21swapper/022:17:180
134491510,3ptp4l0-21swapper/020:01:260
134491510,18ptp4l25-21ksoftirqd/123:25:331
2788299507,8cyclictest41-21ksoftirqd/322:29:593
134491500,5ptp4l0-21swapper/221:20:212
134491500,4ptp4l0-21swapper/323:12:583
134491500,4ptp4l0-21swapper/319:57:453
134491500,4ptp4l0-21swapper/319:16:183
134491500,4ptp4l0-21swapper/220:10:062
134491500,4ptp4l0-21swapper/023:41:240
134491500,4ptp4l0-21swapper/020:13:340
27881994934,4cyclictest33-21ksoftirqd/222:35:132
134491490,4ptp4l2788099cyclictest00:15:261
134491490,4ptp4l0-21swapper/323:24:103
134491490,4ptp4l0-21swapper/323:24:103
134491490,4ptp4l0-21swapper/322:01:563
134491490,4ptp4l0-21swapper/320:30:593
134491490,4ptp4l0-21swapper/122:27:251
134491490,4ptp4l0-21swapper/100:36:071
134491490,4ptp4l0-21swapper/022:57:260
134491490,3ptp4l0-21swapper/019:35:140
27881994815,6cyclictest33-21ksoftirqd/220:54:402
143812480,4sleep3401ktimersoftd/321:00:003
134491480,5ptp4l2788299cyclictest20:29:023
134491480,4ptp4l0-21swapper/322:53:203
134491480,4ptp4l0-21swapper/321:39:213
134491480,4ptp4l0-21swapper/321:09:003
134491480,4ptp4l0-21swapper/122:42:331
134491480,4ptp4l0-21swapper/023:48:160
134491480,4ptp4l0-21swapper/023:35:550
134491480,4ptp4l0-21swapper/021:48:100
134491480,4ptp4l0-21swapper/021:22:280
134491480,3ptp4l0-21swapper/200:18:472
27882994715,6cyclictest41-21ksoftirqd/322:30:213
27881994718,5cyclictest33-21ksoftirqd/200:26:342
134691470,14getstats4524-21cron19:29:592
134491470,4ptp4l0-21swapper/322:42:293
134491470,4ptp4l0-21swapper/321:47:003
134491470,4ptp4l0-21swapper/221:04:582
134491470,4ptp4l0-21swapper/022:47:210
134491470,4ptp4l0-21swapper/021:43:090
134491470,4ptp4l0-21swapper/019:12:380
134491470,3ptp4l0-21swapper/322:17:093
134491470,3ptp4l0-21swapper/123:22:561
134491470,3ptp4l0-21swapper/123:22:561
134491470,3ptp4l0-21swapper/100:21:101
134491470,13ptp4l9-21ksoftirqd/022:09:460
27881994633,3cyclictest33-21ksoftirqd/222:12:102
134491460,5ptp4l0-21swapper/319:06:143
134491460,4ptp4l0-21swapper/023:33:130
134491460,4ptp4l0-21swapper/020:06:310
134491460,3ptp4l121rcu_preempt23:55:210
134491460,3ptp4l0-21swapper/023:09:190
134491460,12ptp4l0-21swapper/220:10:002
134491460,11ptp4l0-21swapper/021:37:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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