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2026-06-11 - 11:35
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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 highest latencies:
System rackdslot1.osadl.org (updated Thu Jun 11, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30692996328,8cyclictest25-21ksoftirqd/119:30:261
247212630,6sleep03069199cyclictest22:25:140
134491620,19ptp4l0-21swapper/000:20:130
30692995927,7cyclictest25-21ksoftirqd/119:50:231
134491590,3ptp4l8739-21ntp_states19:30:213
30692995831,7cyclictest25-21ksoftirqd/120:23:111
30692995830,4cyclictest25-21ksoftirqd/121:00:201
30692995828,7cyclictest25-21ksoftirqd/121:15:001
30692995826,3cyclictest25-21ksoftirqd/123:44:381
30692995826,3cyclictest25-21ksoftirqd/119:40:281
134491580,4ptp4l0-21swapper/022:45:200
134491580,4ptp4l0-21swapper/000:35:230
134491580,16ptp4l0-21swapper/023:45:170
30692995731,6cyclictest25-21ksoftirqd/122:35:191
30692995727,7cyclictest25-21ksoftirqd/120:30:251
30692995727,6cyclictest25-21ksoftirqd/100:25:221
30692995727,3cyclictest25-21ksoftirqd/122:41:321
30692995726,10cyclictest25-21ksoftirqd/120:00:171
30692995725,4cyclictest25-21ksoftirqd/120:49:471
30692995723,3cyclictest25-21ksoftirqd/120:51:071
30692995720,7cyclictest25-21ksoftirqd/121:30:221
30692995720,7cyclictest25-21ksoftirqd/121:30:221
134491570,4ptp4l0-21swapper/100:00:171
134491570,3ptp4l0-21swapper/320:34:363
134491570,3ptp4l0-21swapper/319:20:173
30692995629,7cyclictest25-21ksoftirqd/122:46:411
30692995627,7cyclictest25-21ksoftirqd/121:17:421
30692995624,4cyclictest25-21ksoftirqd/123:09:591
30692995624,3cyclictest25-21ksoftirqd/121:35:111
30692995623,8cyclictest25-21ksoftirqd/119:45:251
30692995622,8cyclictest25-21ksoftirqd/120:40:151
30692995621,4cyclictest25-21ksoftirqd/123:45:191
30692995618,9cyclictest25-21ksoftirqd/100:20:181
134491560,5ptp4l0-21swapper/219:07:382
134491560,5ptp4l0-21swapper/219:07:382
134491560,3ptp4l0-21swapper/019:15:570
30692995523,3cyclictest25-21ksoftirqd/123:55:281
30692995522,3cyclictest25-21ksoftirqd/123:35:141
30692995515,8cyclictest25-21ksoftirqd/120:35:231
134491550,4ptp4l0-21swapper/321:53:263
30692995426,4cyclictest25-21ksoftirqd/122:30:161
30692995424,4cyclictest25-21ksoftirqd/122:03:221
30692995424,4cyclictest25-21ksoftirqd/119:55:251
134491540,4ptp4l0-21swapper/119:08:501
134491540,4ptp4l0-21swapper/119:08:501
134491540,4ptp4l0-21swapper/023:55:130
134491540,3ptp4l9057-21ntp_states21:50:240
30692995324,3cyclictest25-21ksoftirqd/121:50:201
30692995322,6cyclictest25-21ksoftirqd/122:30:001
30692995322,4cyclictest25-21ksoftirqd/122:20:121
30692995321,7cyclictest25-21ksoftirqd/119:35:121
30692995321,7cyclictest25-21ksoftirqd/119:35:121
30692995320,4cyclictest25-21ksoftirqd/123:35:011
30692995319,6cyclictest25-21ksoftirqd/122:50:271
30692995315,5cyclictest25-21ksoftirqd/123:25:271
134491530,4ptp4l0-21swapper/322:10:383
134491530,4ptp4l0-21swapper/022:20:140
134491530,4ptp4l0-21swapper/021:21:470
134491530,18ptp4l9-21ksoftirqd/000:10:180
3069299524,3cyclictest25-21ksoftirqd/119:20:201
30692995227,6cyclictest25-21ksoftirqd/123:20:211
30692995224,6cyclictest25-21ksoftirqd/100:10:001
30692995219,7cyclictest25-21ksoftirqd/123:50:171
30692995219,7cyclictest25-21ksoftirqd/122:55:271
30692995217,7cyclictest25-21ksoftirqd/119:15:211
30692995213,10cyclictest25-21ksoftirqd/121:25:241
134491520,5ptp4l0-21swapper/222:06:062
134491520,4ptp4l0-21swapper/023:50:040
134491520,4ptp4l0-21swapper/022:08:420
134491520,4ptp4l0-21swapper/020:33:140
134491520,3ptp4l32523-21taskset19:11:540
3069299515,6cyclictest25-21ksoftirqd/119:30:001
30692995121,8cyclictest25-21ksoftirqd/123:10:231
30692995118,6cyclictest25-21ksoftirqd/122:05:251
134491510,4ptp4l0-21swapper/021:00:360
134491510,4ptp4l0-21swapper/019:47:370
134491510,4ptp4l0-21swapper/019:20:040
134491510,3ptp4l0-21swapper/322:25:243
30692995022,3cyclictest25-21ksoftirqd/100:39:331
30692995016,7cyclictest25-21ksoftirqd/122:20:011
134491500,4ptp4l0-21swapper/321:14:283
134491500,4ptp4l0-21swapper/020:47:020
134491500,4ptp4l0-21swapper/019:55:030
134491500,3ptp4l0-21swapper/219:51:152
134491500,3ptp4l0-21swapper/100:19:311
134491500,3ptp4l0-21swapper/021:30:210
134491500,3ptp4l0-21swapper/021:30:210
3069299496,6cyclictest131rcu_sched00:10:251
30692994927,3cyclictest25-21ksoftirqd/121:59:041
30692994921,3cyclictest25-21ksoftirqd/100:30:151
30692994918,8cyclictest25-21ksoftirqd/121:40:271
30692994914,6cyclictest25-21ksoftirqd/121:20:171
3069299491,3cyclictest121rcu_preempt20:08:101
134491490,4ptp4l0-21swapper/320:21:353
134491490,4ptp4l0-21swapper/319:48:453
134491490,4ptp4l0-21swapper/222:12:352
134491490,3ptp4l0-21swapper/221:39:272
134491490,3ptp4l0-21swapper/021:25:290
134491490,16ptp4l0-21swapper/020:02:190
134491490,11ptp4l0-21swapper/000:15:150
30692994835,3cyclictest25-21ksoftirqd/119:12:261
3069299480,8cyclictest21419-21awk21:10:001
134491480,4ptp4l0-21swapper/322:16:243
134491480,4ptp4l0-21swapper/321:55:593
134491480,4ptp4l0-21swapper/321:18:053
134491480,4ptp4l0-21swapper/320:42:043
134491480,4ptp4l0-21swapper/223:35:092
134491480,4ptp4l0-21swapper/023:15:040
134491480,4ptp4l0-21swapper/023:15:040
134491480,4ptp4l0-21swapper/021:35:340
134491480,4ptp4l0-21swapper/020:10:550
134491480,3ptp4l0-21swapper/019:31:080
134491480,3ptp4l0-21swapper/019:30:000
30692994741,3cyclictest25-21ksoftirqd/120:20:001
3069299473,4cyclictest32542-21kworker/1:020:27:181
3069299473,2cyclictest25-21ksoftirqd/121:45:241
30692994716,11cyclictest25-21ksoftirqd/120:55:251
134491470,4ptp4l0-21swapper/300:38:023
134491470,3ptp4l0-21swapper/022:33:530
3069299464,2cyclictest25-21ksoftirqd/122:12:591
134491460,4ptp4l6412-21ls20:35:183
134491460,4ptp4l2318-21gnome-shell23:05:590
134491460,4ptp4l0-21swapper/320:28:153
134491460,4ptp4l0-21swapper/300:34:023
134491460,4ptp4l0-21swapper/220:06:392
134491460,4ptp4l0-21swapper/219:15:272
134491460,3ptp4l0-21swapper/322:03:333
134491460,11ptp4l0-21swapper/220:10:192
30692994539,3cyclictest25-21ksoftirqd/123:20:001
30692994539,3cyclictest25-21ksoftirqd/123:19:591
30692994520,8cyclictest25-21ksoftirqd/123:00:131
134491450,4ptp4l0-21swapper/300:18:583
134491450,3ptp4l0-21swapper/321:49:373
134491450,3ptp4l0-21swapper/222:29:272
30693994425,16cyclictest33-21ksoftirqd/221:55:002
134491440,9ptp4l0-21swapper/220:03:112
134491440,6ptp4l0-21swapper/221:25:112
134491440,5ptp4l3069199cyclictest21:10:210
134491440,4ptp4l0-21swapper/323:10:533
134491440,4ptp4l0-21swapper/321:08:163
134491440,4ptp4l0-21swapper/019:53:470
134491440,10ptp4l0-21swapper/019:35:430
134491440,10ptp4l0-21swapper/019:35:430
30693994331,9cyclictest33-21ksoftirqd/200:25:162
134691430,11getstats0-21swapper/222:39:392
134691430,11getstats0-21swapper/222:22:502
134691430,10getstats0-21swapper/220:15:102
134491430,9ptp4l0-21swapper/222:48:482
134491430,9ptp4l0-21swapper/222:41:242
134491430,9ptp4l0-21swapper/221:13:382
134491430,9ptp4l0-21swapper/220:35:072
134491430,9ptp4l0-21swapper/219:55:492
134491430,9ptp4l0-21swapper/219:31:592
134491430,5ptp4l3253-21apt-get22:50:040
134491430,4ptp4l20304-21meminfo21:05:212
134491430,4ptp4l13341-21iostat_ios22:00:180
134491430,4ptp4l0-21swapper/321:20:353
134491430,3ptp4l0-21swapper/219:37:472
134491430,3ptp4l0-21swapper/219:37:472
134491430,10ptp4l0-21swapper/221:32:542
134491430,10ptp4l0-21swapper/221:32:542
134691420,10getstats0-21swapper/223:51:042
134691420,10getstats0-21swapper/223:15:342
134691420,10getstats0-21swapper/223:15:342
134691420,10getstats0-21swapper/223:01:462
134491420,9ptp4l0-21swapper/200:04:002
134491420,5ptp4l0-21swapper/023:04:590
134491420,4ptp4l29550-21meminfo20:15:190
134491420,4ptp4l29308-21memory19:05:210
134491420,4ptp4l29308-21memory19:05:210
134491420,4ptp4l13178-21ls19:40:200
134491420,4ptp4l11573-21ntp_states21:55:220
134491420,4ptp4l0-21swapper/020:07:150
30693994136,3cyclictest33-21ksoftirqd/223:15:002
30692994113,7cyclictest25-21ksoftirqd/120:11:321
134691410,10getstats0-21swapper/223:55:012
134691410,10getstats0-21swapper/221:46:472
134491410,4ptp4l41-21ksoftirqd/322:30:143
134491410,4ptp4l0-21swapper/221:00:112
134491410,4ptp4l0-21swapper/220:51:392
134491410,4ptp4l0-21swapper/021:06:240
134491410,3ptp4l26929-21df_inode22:30:142
134491410,3ptp4l17845-21hddtemp_smartct22:10:160
134491410,3ptp4l12772-21apt-get22:00:122
134491410,3ptp4l0-21swapper/320:50:593
30693994036,3cyclictest33-21ksoftirqd/223:44:592
134691400,10getstats0-21swapper/220:47:102
134491400,4ptp4l0-21swapper/323:05:193
134491400,4ptp4l0-21swapper/321:00:293
134491400,4ptp4l0-21swapper/320:05:203
134491400,4ptp4l0-21swapper/320:00:113
134491400,4ptp4l0-21swapper/319:50:223
134491400,4ptp4l0-21swapper/319:10:323
134491400,4ptp4l0-21swapper/222:50:252
134491400,4ptp4l0-21swapper/221:20:152
134491400,4ptp4l0-21swapper/220:59:212
134491400,4ptp4l0-21swapper/022:44:290
134491400,4ptp4l0-21swapper/022:19:370
134491400,4ptp4l0-21swapper/021:40:120
134491400,4ptp4l0-21swapper/021:18:590
134491400,4ptp4l0-21swapper/020:44:050
134491400,3ptp4l15685-21meminfo20:55:200
134491400,3ptp4l0-21swapper/223:31:192
134491400,3ptp4l0-21swapper/023:30:030
134491400,3ptp4l0-21swapper/021:46:340
134491390,7ptp4l0-21swapper/023:36:220
134491390,5ptp4l0-21swapper/319:07:393
134491390,5ptp4l0-21swapper/319:07:393
134491390,5ptp4l0-21swapper/219:13:292
134491390,5ptp4l0-21swapper/000:05:110
134491390,4ptp4l5783-21diskstats20:35:130
134491390,4ptp4l28762-21/usr/sbin/munin21:25:133
134491390,4ptp4l20293-21grep22:15:182
134491390,4ptp4l0-21swapper/322:09:293
134491390,4ptp4l0-21swapper/320:55:223
134491390,4ptp4l0-21swapper/320:47:053
134491390,4ptp4l0-21swapper/320:10:203
134491390,4ptp4l0-21swapper/319:16:223
134491390,4ptp4l0-21swapper/223:05:112
134491390,4ptp4l0-21swapper/221:55:162
134491390,4ptp4l0-21swapper/221:40:152
134491390,4ptp4l0-21swapper/220:43:072
134491390,4ptp4l0-21swapper/219:27:152
134491390,4ptp4l0-21swapper/219:20:152
134491390,4ptp4l0-21swapper/200:34:152
134491390,4ptp4l0-21swapper/200:10:472
134491390,4ptp4l0-21swapper/023:26:150
134491390,4ptp4l0-21swapper/023:20:030
134491390,4ptp4l0-21swapper/022:55:140
134491390,4ptp4l0-21swapper/022:38:000
134491390,4ptp4l0-21swapper/020:50:170
134491390,3ptp4l27225-21hddtemp_smartct23:40:150
134491390,3ptp4l0-21swapper/221:15:292
134491390,3ptp4l0-21swapper/219:49:412
134491390,3ptp4l0-21swapper/200:35:202
134491390,3ptp4l0-21swapper/000:30:280
134491380,4ptp4l0-21swapper/323:35:133
134491380,4ptp4l0-21swapper/322:50:153
134491380,4ptp4l0-21swapper/322:23:473
134491380,4ptp4l0-21swapper/321:40:163
134491380,4ptp4l0-21swapper/321:35:213
134491380,4ptp4l0-21swapper/321:31:563
134491380,4ptp4l0-21swapper/321:31:563
134491380,4ptp4l0-21swapper/320:15:403
134491380,4ptp4l0-21swapper/319:42:333
134491380,4ptp4l0-21swapper/223:46:132
134491380,4ptp4l0-21swapper/223:25:112
134491380,4ptp4l0-21swapper/223:20:132
134491380,4ptp4l0-21swapper/220:25:142
134491380,4ptp4l0-21swapper/219:40:362
134491380,4ptp4l0-21swapper/200:21:592
134491380,4ptp4l0-21swapper/200:19:392
134491380,4ptp4l0-21swapper/020:27:570
134491380,3ptp4l0-21swapper/322:58:043
134491380,3ptp4l0-21swapper/300:27:373
134491380,3ptp4l0-21swapper/300:10:453
134491380,3ptp4l0-21swapper/220:30:392
134491380,3ptp4l0-21swapper/220:21:352
134491380,3ptp4l0-21swapper/200:05:192
134491380,3ptp4l0-21swapper/023:10:280
134491380,3ptp4l0-21swapper/020:20:250
134491380,3ptp4l0-21swapper/000:02:090
134491370,4ptp4l0-21swapper/323:49:263
134491370,4ptp4l0-21swapper/323:30:073
134491370,4ptp4l0-21swapper/322:40:563
134491370,4ptp4l0-21swapper/319:55:513
134491370,4ptp4l0-21swapper/319:35:313
134491370,4ptp4l0-21swapper/319:35:313
134491370,4ptp4l0-21swapper/319:25:353
134491370,4ptp4l0-21swapper/300:03:363
134491370,3ptp4l0-21swapper/323:04:073
134491370,3ptp4l0-21swapper/322:37:573
134491370,3ptp4l0-21swapper/222:58:012
134491370,3ptp4l0-21swapper/000:25:120
134491360,4ptp4l0-21swapper/323:15:303
134491360,4ptp4l0-21swapper/323:15:293
134491360,3ptp4l0-21swapper/323:50:193
134491360,3ptp4l0-21swapper/323:29:333
134491360,3ptp4l0-21swapper/322:48:023
134491360,3ptp4l0-21swapper/300:20:163
134491350,3ptp4l41-21ksoftirqd/323:40:133
134491350,3ptp4l0-21swapper/323:20:143
134491350,3ptp4l0-21swapper/300:07:183
30694992823,3cyclictest41-21ksoftirqd/323:59:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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