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2026-09-02 - 13:39
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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 Sep 02, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2152221450,6sleep23043899cyclictest00:35:272
134491970,4ptp4l0-21swapper/319:31:463
30438995927,6cyclictest33-21ksoftirqd/222:30:172
30438995926,3cyclictest33-21ksoftirqd/219:11:382
30438995922,4cyclictest33-21ksoftirqd/221:42:582
134491590,4ptp4l0-21swapper/121:32:501
134491580,9ptp4l0-21swapper/019:05:100
134491580,4ptp4l0-21swapper/020:55:260
134491580,3ptp4l0-21swapper/123:25:141
134491570,4ptp4l0-21swapper/222:51:572
134491570,3ptp4l25-21ksoftirqd/123:35:161
134491570,14ptp4l0-21swapper/000:25:260
30438995625,3cyclictest33-21ksoftirqd/221:25:022
134491560,3ptp4l0-21swapper/323:10:513
134491560,3ptp4l0-21swapper/220:35:302
134491560,3ptp4l0-21swapper/122:00:261
134491560,3ptp4l0-21swapper/100:16:191
30438995527,4cyclictest33-21ksoftirqd/221:55:142
30438995525,4cyclictest33-21ksoftirqd/221:17:372
134491550,4ptp4l0-21swapper/323:45:153
134491550,3ptp4l0-21swapper/120:28:491
134491540,3ptp4l0-21swapper/322:30:213
134491540,3ptp4l0-21swapper/321:00:263
134491540,3ptp4l0-21swapper/120:46:201
134491540,3ptp4l0-21swapper/100:04:331
30438995327,4cyclictest33-21ksoftirqd/223:56:022
30438995326,7cyclictest33-21ksoftirqd/219:35:222
30438995325,7cyclictest33-21ksoftirqd/223:00:142
30438995325,7cyclictest33-21ksoftirqd/222:15:582
30438995321,3cyclictest33-21ksoftirqd/222:07:532
134491530,4ptp4l0-21swapper/023:03:140
134491530,4ptp4l0-21swapper/000:30:170
107922530,3sleep310794-21fschecks_count21:55:173
3043899522,7cyclictest0-21swapper/223:30:142
30438995226,4cyclictest33-21ksoftirqd/221:45:302
30438995224,6cyclictest33-21ksoftirqd/221:05:272
30438995221,8cyclictest33-21ksoftirqd/219:40:182
30438995218,3cyclictest33-21ksoftirqd/220:17:522
221942520,4sleep00-21swapper/023:30:140
134491520,4ptp4l0-21swapper/020:50:540
134491520,4ptp4l0-21swapper/019:35:400
134491520,4ptp4l0-21swapper/000:04:550
134491520,3ptp4l30454-21/usr/sbin/munin19:10:193
134491520,3ptp4l0-21swapper/320:23:313
134491520,3ptp4l0-21swapper/023:56:270
30438995122,4cyclictest33-21ksoftirqd/222:55:262
30438995119,5cyclictest33-21ksoftirqd/222:40:142
30438995117,6cyclictest33-21ksoftirqd/223:07:172
30438995117,3cyclictest33-21ksoftirqd/200:00:492
30438995115,8cyclictest33-21ksoftirqd/200:21:142
134491510,4ptp4l0-21swapper/319:57:033
134491510,4ptp4l0-21swapper/023:26:170
134491510,4ptp4l0-21swapper/022:30:240
134491510,4ptp4l0-21swapper/021:45:380
134491510,4ptp4l0-21swapper/021:18:320
134491510,4ptp4l0-21swapper/019:16:360
30438995019,6cyclictest33-21ksoftirqd/219:55:252
30438995019,5cyclictest33-21ksoftirqd/221:50:252
30438995019,5cyclictest33-21ksoftirqd/200:30:432
30438995017,3cyclictest33-21ksoftirqd/221:20:192
134491500,4ptp4l0-21swapper/023:35:150
134491500,3ptp4l14287-21ls00:20:200
134491500,3ptp4l0-21swapper/321:10:353
134491500,3ptp4l0-21swapper/220:12:222
134491500,12ptp4l0-21swapper/021:55:410
3043899492,4cyclictest0-21swapper/220:00:482
30438994919,6cyclictest33-21ksoftirqd/200:30:012
30438994913,5cyclictest33-21ksoftirqd/223:10:172
134491490,4ptp4l0-21swapper/320:04:593
134491490,4ptp4l0-21swapper/022:44:490
134491490,4ptp4l0-21swapper/022:05:350
134491490,3ptp4l0-21swapper/021:01:220
134491490,3ptp4l0-21swapper/019:50:220
30438994833,12cyclictest33-21ksoftirqd/223:40:282
30438994818,3cyclictest33-21ksoftirqd/220:05:132
30438994815,3cyclictest33-21ksoftirqd/220:45:292
30438994810,6cyclictest33-21ksoftirqd/223:40:012
3043799481,45cyclictest10169-21kworker/1:020:30:291
134491480,9ptp4l0-21swapper/321:40:183
134491480,6ptp4l9-21ksoftirqd/023:16:070
134491480,4ptp4l0-21swapper/323:36:333
134491480,4ptp4l0-21swapper/321:05:363
134491480,4ptp4l0-21swapper/300:35:553
134491480,4ptp4l0-21swapper/300:32:003
134491480,4ptp4l0-21swapper/200:19:522
134491480,4ptp4l0-21swapper/020:44:130
134491480,4ptp4l0-21swapper/019:44:380
134491480,11ptp4l0-21swapper/323:15:173
30438994718,4cyclictest33-21ksoftirqd/220:40:282
30438994710,7cyclictest33-21ksoftirqd/220:24:162
30438994710,6cyclictest33-21ksoftirqd/223:25:182
30438994710,4cyclictest33-21ksoftirqd/220:30:172
134491470,7ptp4l29439-21/usr/sbin/munin19:05:231
134491470,4ptp4l121rcu_preempt21:45:403
134491470,4ptp4l0-21swapper/323:25:333
134491470,4ptp4l0-21swapper/319:26:423
134491470,4ptp4l0-21swapper/019:23:510
134491470,4ptp4l0-21swapper/000:11:280
134491470,3ptp4l0-21swapper/320:54:483
134491470,3ptp4l0-21swapper/319:18:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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