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2025-12-15 - 13:38
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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 Mon Dec 15, 2025 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2822921390,5sleep21137999cyclictest00:20:462
2663021360,3sleep21137999cyclictest22:00:372
134491690,4ptp4l0-21swapper/100:00:361
11380996832,8cyclictest41-21ksoftirqd/321:23:343
11380996329,7cyclictest41-21ksoftirqd/321:02:043
11380996326,4cyclictest41-21ksoftirqd/322:12:453
134491620,18ptp4l0-21swapper/022:30:390
11380996229,4cyclictest41-21ksoftirqd/320:10:063
11380996228,4cyclictest41-21ksoftirqd/300:18:373
134491610,17ptp4l32338-21latency_hist22:14:590
11380996129,4cyclictest41-21ksoftirqd/322:38:123
134491600,3ptp4l0-21swapper/320:48:513
134491600,3ptp4l0-21swapper/022:40:320
11380996029,4cyclictest41-21ksoftirqd/300:07:533
11380996026,4cyclictest41-21ksoftirqd/319:50:503
11380996025,4cyclictest41-21ksoftirqd/323:33:163
11380996023,4cyclictest41-21ksoftirqd/323:23:053
134491590,4ptp4l10916-21date20:15:440
134491590,4ptp4l0-21swapper/221:55:482
134491590,4ptp4l0-21swapper/022:00:420
134491590,3ptp4l0-21swapper/100:30:461
134491590,15ptp4l9359-21hddtemp_smartct19:05:280
11380995928,4cyclictest41-21ksoftirqd/322:57:013
11380995927,4cyclictest41-21ksoftirqd/300:13:323
134491580,3ptp4l0-21swapper/000:30:470
11380995829,7cyclictest41-21ksoftirqd/300:35:003
11380995829,6cyclictest41-21ksoftirqd/320:05:013
11380995828,6cyclictest41-21ksoftirqd/320:57:023
11380995828,6cyclictest41-21ksoftirqd/320:57:023
11380995827,8cyclictest41-21ksoftirqd/320:05:423
11380995824,4cyclictest41-21ksoftirqd/320:35:433
11380995824,4cyclictest41-21ksoftirqd/320:26:243
134491570,3ptp4l0-21swapper/123:00:391
134491570,3ptp4l0-21swapper/122:15:371
134491570,3ptp4l0-21swapper/021:36:080
134491570,3ptp4l0-21swapper/019:10:350
11380995726,6cyclictest41-21ksoftirqd/322:50:403
11380995725,4cyclictest41-21ksoftirqd/319:13:333
11380995718,8cyclictest41-21ksoftirqd/323:15:003
134491560,17ptp4l0-21swapper/021:09:480
11380995626,6cyclictest41-21ksoftirqd/300:30:003
11380995626,6cyclictest41-21ksoftirqd/300:30:003
11380995623,4cyclictest41-21ksoftirqd/322:30:433
11380995522,4cyclictest41-21ksoftirqd/321:18:593
11380995520,8cyclictest41-21ksoftirqd/300:00:313
134491540,4ptp4l0-21swapper/023:30:430
134491540,4ptp4l0-21swapper/021:41:150
134491540,3ptp4l0-21swapper/119:17:381
134491540,14ptp4l9242-21diskstats19:05:261
11380995426,6cyclictest41-21ksoftirqd/319:46:133
11380995425,3cyclictest41-21ksoftirqd/319:18:533
11380995424,4cyclictest41-21ksoftirqd/322:44:593
11380995422,3cyclictest41-21ksoftirqd/321:30:413
11380995419,3cyclictest41-21ksoftirqd/321:40:393
11380995412,8cyclictest41-21ksoftirqd/300:20:423
134491530,4ptp4l0-21swapper/122:49:591
134491530,4ptp4l0-21swapper/100:15:551
134491530,4ptp4l0-21swapper/021:04:400
11380995325,7cyclictest41-21ksoftirqd/320:53:413
11380995324,3cyclictest41-21ksoftirqd/319:31:383
134491520,4ptp4l0-21swapper/120:40:411
134491520,4ptp4l0-21swapper/023:40:460
134491520,4ptp4l0-21swapper/022:50:340
11380995224,3cyclictest41-21ksoftirqd/321:52:193
11380995222,4cyclictest41-21ksoftirqd/321:39:113
11380995221,4cyclictest41-21ksoftirqd/323:05:413
11380995214,4cyclictest41-21ksoftirqd/323:35:453
134491510,4ptp4l0-21swapper/319:38:333
11380995123,7cyclictest41-21ksoftirqd/319:20:323
11380995121,6cyclictest41-21ksoftirqd/322:05:013
11380995115,8cyclictest41-21ksoftirqd/320:34:563
134491500,4ptp4l0-21swapper/100:36:421
134491500,4ptp4l0-21swapper/100:25:061
134491500,4ptp4l0-21swapper/100:25:061
134491500,4ptp4l0-21swapper/020:51:540
134491500,4ptp4l0-21swapper/019:59:100
134491500,3ptp4l0-21swapper/023:05:330
11380995023,7cyclictest41-21ksoftirqd/320:20:343
11380995021,3cyclictest41-21ksoftirqd/321:55:363
11380995018,4cyclictest41-21ksoftirqd/322:20:013
11380995014,8cyclictest41-21ksoftirqd/323:00:313
134491490,4ptp4l0-21swapper/323:19:293
134491490,4ptp4l0-21swapper/323:19:293
134491490,4ptp4l0-21swapper/300:38:043
134491490,4ptp4l0-21swapper/121:54:131
134491490,4ptp4l0-21swapper/022:47:470
134491490,4ptp4l0-21swapper/022:19:410
134491490,3ptp4l0-21swapper/219:30:302
134491490,3ptp4l0-21swapper/021:30:310
134491480,4ptp4l0-21swapper/223:12:272
134491480,4ptp4l0-21swapper/023:49:210
134491480,4ptp4l0-21swapper/022:22:390
134491480,4ptp4l0-21swapper/021:16:150
134491480,4ptp4l0-21swapper/020:44:260
134491480,4ptp4l0-21swapper/020:03:040
134491480,4ptp4l0-21swapper/000:18:430
134491480,3ptp4l0-21swapper/022:35:380
134491480,11ptp4l0-21swapper/120:49:551
11380994819,7cyclictest41-21ksoftirqd/321:25:313
134491470,4ptp4l0-21swapper/121:30:061
134491470,4ptp4l0-21swapper/020:39:070
134491470,4ptp4l0-21swapper/000:08:110
134491470,3ptp4l0-21swapper/022:09:590
134491470,3ptp4l0-21swapper/021:10:440
1138099478,3cyclictest41-21ksoftirqd/323:55:443
11380994720,3cyclictest41-21ksoftirqd/321:05:453
11380994714,7cyclictest41-21ksoftirqd/323:55:003
11380994713,7cyclictest41-21ksoftirqd/322:06:313
11380994713,7cyclictest41-21ksoftirqd/319:58:413
134491460,4ptp4l0-21swapper/222:32:582
134491460,4ptp4l0-21swapper/119:33:201
134491460,4ptp4l0-21swapper/021:20:270
134491460,3ptp4l0-21swapper/219:52:232
134491460,3ptp4l0-21swapper/122:58:411
1138099462,2cyclictest41-21ksoftirqd/321:48:383
11380994617,7cyclictest41-21ksoftirqd/321:15:003
1138099461,2cyclictest121rcu_preempt22:45:283
134491450,4ptp4l0-21swapper/022:26:180
134491450,4ptp4l0-21swapper/019:16:430
134491450,3ptp4l0-21swapper/319:26:153
134491450,3ptp4l0-21swapper/219:39:562
134491450,3ptp4l0-21swapper/019:34:450
1138099451,2cyclictest121rcu_preempt22:20:013
134491440,4ptp4l0-21swapper/000:22:260
134491440,12ptp4l0-21swapper/223:40:402
11380994438,3cyclictest41-21ksoftirqd/320:20:003
1138099440,4cyclictest26774-21kworker/3:020:43:533
11377994433,9cyclictest25-21ksoftirqd/123:15:471
11377994433,9cyclictest25-21ksoftirqd/123:15:471
134491430,9ptp4l0-21swapper/223:28:072
134491430,9ptp4l0-21swapper/200:04:292
134491430,6ptp4l20124-21iostat_ios22:55:360
134491430,4ptp4l25529-21apt-get20:50:302
134491430,4ptp4l0-21swapper/000:04:240
134491430,3ptp4l0-21swapper/222:36:012
134491430,3ptp4l0-21swapper/120:59:581
134491430,3ptp4l0-21swapper/120:59:581
134491430,3ptp4l0-21swapper/023:54:430
134491430,11ptp4l2692-21readlink00:35:462
134491430,10ptp4l0-21swapper/220:17:162
11380994338,3cyclictest41-21ksoftirqd/323:50:003
11380994315,7cyclictest41-21ksoftirqd/322:25:293
134491420,8ptp4l0-21swapper/221:35:302
134491420,8ptp4l0-21swapper/220:21:572
134491420,5ptp4l0-21swapper/123:10:351
134491420,5ptp4l0-21swapper/121:36:151
134491420,4ptp4l26795-21ntp_states22:00:401
134491410,9ptp4l0-21swapper/219:11:172
134491410,8ptp4l0-21swapper/220:00:192
134491410,8ptp4l0-21swapper/023:15:390
134491410,8ptp4l0-21swapper/023:15:390
134491410,5ptp4l0-21swapper/220:10:432
134491410,4ptp4l30279-21apt-get22:10:312
134491410,4ptp4l28429-21hddtemp_smartct22:05:511
134491410,4ptp4l2458-21apt-get20:00:291
134491410,4ptp4l17259-21apt-get22:50:312
134491410,4ptp4l1021-21meminfo19:55:422
134491410,4ptp4l0-21swapper/221:21:402
134491410,4ptp4l0-21swapper/200:27:422
134491410,4ptp4l0-21swapper/200:27:422
134491410,4ptp4l0-21swapper/120:50:451
134491410,4ptp4l0-21swapper/021:25:230
134491410,3ptp4l26676-21apt-get23:10:310
134491410,3ptp4l18781-21apt-get21:45:340
134491410,3ptp4l10448-21apt-get23:45:321
1138099415,7cyclictest41-21ksoftirqd/323:40:463
11380994135,3cyclictest41-21ksoftirqd/319:40:373
134491400,9ptp4l0-21swapper/221:17:182
134491400,5ptp4l12455-21/usr/sbin/munin19:10:341
134491400,5ptp4l0-21swapper/123:30:321
134491400,5ptp4l0-21swapper/100:20:321
134491400,5ptp4l0-21swapper/023:25:340
134491400,5ptp4l0-21swapper/023:00:330
134491400,4ptp4l7176-21swap23:35:420
134491400,4ptp4l31090-21ntp_states19:50:401
134491400,4ptp4l30585-21diskstats22:10:351
134491400,4ptp4l29922-21meminfo23:15:372
134491400,4ptp4l29922-21meminfo23:15:372
134491400,4ptp4l27566-21apt-get20:55:020
134491400,4ptp4l27566-21apt-get20:55:020
134491400,4ptp4l23926-21iostat21:55:351
134491400,4ptp4l15885-21irqstats23:55:381
134491400,4ptp4l1165-21apt23:25:311
134491400,4ptp4l0-21swapper/220:36:322
134491400,4ptp4l0-21swapper/122:30:371
134491400,4ptp4l0-21swapper/122:25:301
134491400,4ptp4l0-21swapper/121:43:271
134491400,4ptp4l0-21swapper/121:25:421
134491400,4ptp4l0-21swapper/120:30:451
134491400,4ptp4l0-21swapper/019:35:350
134491400,4ptp4l0-21swapper/000:35:440
134491400,3ptp4l8456-21diskstats23:40:321
134491400,3ptp4l5329-21hddtemp_smartct21:15:341
134491400,3ptp4l5071-21diskstats20:05:331
134491400,3ptp4l32240-21memory23:20:370
134491400,3ptp4l22202-21apt-get00:10:291
134491400,3ptp4l18482-21apt-get19:25:292
134491400,3ptp4l13315-21iostat23:50:361
134491400,3ptp4l13180-21ls20:20:451
134491400,3ptp4l0-21swapper/021:56:430
1138099402,3cyclictest121rcu_preempt23:25:343
11377994035,3cyclictest25-21ksoftirqd/122:20:381
134491390,6ptp4l0-21swapper/000:10:460
134491390,5ptp4l19190-21irqrtprio19:25:351
134491390,5ptp4l16349-21/usr/sbin/munin23:55:440
134491390,5ptp4l0-21swapper/121:45:331
134491390,5ptp4l0-21swapper/121:05:301
134491390,4ptp4l28084-21fschecks_time19:45:330
134491390,4ptp4l16705-21iostat_ios19:20:370
134491390,4ptp4l0-21swapper/223:30:192
134491390,4ptp4l0-21swapper/223:08:342
134491390,4ptp4l0-21swapper/223:00:442
134491390,4ptp4l0-21swapper/222:48:232
134491390,4ptp4l0-21swapper/222:23:072
134491390,4ptp4l0-21swapper/222:08:352
134491390,4ptp4l0-21swapper/221:25:262
134491390,4ptp4l0-21swapper/221:14:592
134491390,4ptp4l0-21swapper/221:05:322
134491390,4ptp4l0-21swapper/219:16:452
134491390,4ptp4l0-21swapper/200:19:132
134491390,4ptp4l0-21swapper/123:22:001
134491390,4ptp4l0-21swapper/122:54:351
134491390,4ptp4l0-21swapper/122:40:531
134491390,4ptp4l0-21swapper/122:35:321
134491390,4ptp4l0-21swapper/121:20:131
134491390,4ptp4l0-21swapper/121:10:351
134491390,4ptp4l0-21swapper/119:45:261
134491390,4ptp4l0-21swapper/119:35:361
134491390,4ptp4l0-21swapper/100:05:321
134491390,4ptp4l0-21swapper/020:46:070
134491390,4ptp4l0-21swapper/020:20:290
134491390,4ptp4l0-21swapper/020:06:040
134491390,4ptp4l0-21swapper/019:28:000
134491390,4ptp4l0-21swapper/000:26:150
134491390,4ptp4l0-21swapper/000:26:150
134491390,3ptp4l6327-21ls20:05:442
134491390,3ptp4l25819-21hddtemp_smartct19:40:330
134491390,3ptp4l0-21swapper/120:12:531
134491390,3ptp4l0-21swapper/021:50:450
134491390,3ptp4l0-21swapper/020:30:310
134491380,5ptp4l0-21swapper/120:27:501
134491380,5ptp4l0-21swapper/119:20:361
134491380,4ptp4l5818-21/usr/sbin/munin23:35:412
134491380,4ptp4l24687-21diskstats23:05:311
134491380,4ptp4l0-21swapper/223:50:162
134491380,4ptp4l0-21swapper/223:46:242
134491380,4ptp4l0-21swapper/223:22:412
134491380,4ptp4l0-21swapper/222:57:162
134491380,4ptp4l0-21swapper/222:41:482
134491380,4ptp4l0-21swapper/222:25:232
134491380,4ptp4l0-21swapper/222:17:202
134491380,4ptp4l0-21swapper/221:46:492
134491380,4ptp4l0-21swapper/221:32:362
134491380,4ptp4l0-21swapper/220:57:202
134491380,4ptp4l0-21swapper/220:57:202
134491380,4ptp4l0-21swapper/220:40:042
134491380,4ptp4l0-21swapper/220:30:072
134491380,4ptp4l0-21swapper/220:25:382
134491380,4ptp4l0-21swapper/219:46:042
134491380,4ptp4l0-21swapper/219:41:372
134491380,4ptp4l0-21swapper/219:20:022
134491380,4ptp4l0-21swapper/200:10:272
134491380,4ptp4l0-21swapper/123:36:001
134491380,4ptp4l0-21swapper/121:00:111
134491380,4ptp4l0-21swapper/120:35:431
134491380,4ptp4l0-21swapper/120:17:011
134491380,4ptp4l0-21swapper/119:40:431
134491380,4ptp4l0-21swapper/020:25:310
134491380,4ptp4l0-21swapper/019:50:410
134491380,3ptp4l0-21swapper/221:00:362
134491370,5ptp4l0-21swapper/220:45:282
134491370,4ptp4l0-21swapper/223:55:032
134491370,4ptp4l0-21swapper/221:51:372
134491370,4ptp4l0-21swapper/221:40:242
134491370,4ptp4l0-21swapper/200:31:462
134491370,4ptp4l0-21swapper/200:05:382
134491370,4ptp4l0-21swapper/119:55:291
134491360,3ptp4l0-21swapper/020:13:290
890422316,4sleep30-21swapper/319:05:123
1071922315,4sleep20-21swapper/219:07:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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