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2026-07-26 - 10:27
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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 Sun Jul 26, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1279321430,5sleep02277099cyclictest00:35:180
134491870,5ptp4l0-21swapper/023:20:240
22772996813,52cyclictest22621-21unixbench_singl22:35:292
46582610,4sleep10-21swapper/119:40:291
134491610,4ptp4l0-21swapper/020:10:180
134491600,3ptp4l0-21swapper/222:50:142
134491590,4ptp4l0-21swapper/322:20:153
134491590,3ptp4l0-21swapper/221:18:442
134491580,4ptp4l0-21swapper/322:25:273
134491580,4ptp4l0-21swapper/023:10:240
134491580,4ptp4l0-21swapper/023:05:210
134491580,3ptp4l0-21swapper/223:47:192
134491580,3ptp4l0-21swapper/221:05:232
22772995721,4cyclictest33-21ksoftirqd/220:10:562
134491570,3ptp4l0-21swapper/219:15:002
134491570,3ptp4l0-21swapper/120:53:411
134491570,17ptp4l0-21swapper/020:54:120
22772995624,6cyclictest33-21ksoftirqd/220:35:242
22772995622,6cyclictest33-21ksoftirqd/200:25:242
134491560,4ptp4l0-21swapper/321:24:473
134491560,2ptp4l0-21swapper/319:16:493
22772995526,3cyclictest33-21ksoftirqd/222:05:182
22772995524,3cyclictest33-21ksoftirqd/223:36:242
22772995523,4cyclictest33-21ksoftirqd/200:07:112
22772995522,6cyclictest33-21ksoftirqd/221:55:232
22772995522,3cyclictest33-21ksoftirqd/200:20:002
134491550,5ptp4l0-21swapper/222:34:342
134491550,4ptp4l25654-21wc22:45:002
134491550,3ptp4l0-21swapper/220:50:102
22772995422,4cyclictest33-21ksoftirqd/200:33:522
22772995420,4cyclictest33-21ksoftirqd/222:20:542
22772995416,6cyclictest33-21ksoftirqd/221:10:232
134491540,4ptp4l0-21swapper/322:15:263
134491540,4ptp4l0-21swapper/320:51:003
134491540,4ptp4l0-21swapper/119:07:191
134491540,3ptp4l0-21swapper/323:19:133
22772995325,3cyclictest33-21ksoftirqd/223:33:512
22772995323,4cyclictest33-21ksoftirqd/219:38:352
22772995322,3cyclictest33-21ksoftirqd/222:14:492
22772995321,6cyclictest33-21ksoftirqd/223:55:192
22772995319,4cyclictest33-21ksoftirqd/223:05:202
22772995313,12cyclictest33-21ksoftirqd/220:47:332
2277199533,2cyclictest0-21swapper/122:36:071
134491530,4ptp4l16151-21diskstats20:05:172
134491530,3ptp4l0-21swapper/321:01:313
22772995225,7cyclictest33-21ksoftirqd/200:39:532
22772995223,4cyclictest33-21ksoftirqd/220:03:192
22772995221,7cyclictest33-21ksoftirqd/223:10:192
22772995221,5cyclictest33-21ksoftirqd/219:55:232
22772995221,4cyclictest33-21ksoftirqd/222:57:532
22772995221,4cyclictest33-21ksoftirqd/221:30:252
22772995220,5cyclictest33-21ksoftirqd/220:25:252
134491520,3ptp4l0-21swapper/322:33:133
2277299514,4cyclictest121rcu_preempt00:02:562
22772995121,8cyclictest33-21ksoftirqd/221:00:262
22772995120,5cyclictest33-21ksoftirqd/222:29:012
22772995120,5cyclictest33-21ksoftirqd/220:43:432
22772995119,5cyclictest33-21ksoftirqd/221:52:292
22772995119,5cyclictest33-21ksoftirqd/221:20:182
22772995117,6cyclictest33-21ksoftirqd/223:15:202
134491510,4ptp4l0-21swapper/321:55:363
134491510,4ptp4l0-21swapper/320:58:593
134491510,4ptp4l0-21swapper/023:25:030
22772995025,5cyclictest33-21ksoftirqd/219:41:062
22772995015,5cyclictest33-21ksoftirqd/221:42:302
134491500,4ptp4l0-21swapper/323:22:163
134491500,4ptp4l0-21swapper/319:24:223
134491500,4ptp4l0-21swapper/023:01:260
134491500,2ptp4l0-21swapper/320:02:333
22772994917,3cyclictest33-21ksoftirqd/223:20:282
22772994912,8cyclictest33-21ksoftirqd/219:45:022
22772994912,8cyclictest33-21ksoftirqd/200:20:252
134491490,5ptp4l0-21swapper/019:06:140
134491490,4ptp4l0-21swapper/322:00:123
134491490,4ptp4l0-21swapper/320:29:423
134491490,4ptp4l0-21swapper/319:44:453
134491490,4ptp4l0-21swapper/223:40:362
134491490,3ptp4l0-21swapper/323:48:073
134491490,3ptp4l0-21swapper/322:53:363
134491490,3ptp4l0-21swapper/300:20:483
134491490,16ptp4l0-21swapper/100:10:101
134491490,12ptp4l0-21swapper/322:43:133
22772994837,9cyclictest33-21ksoftirqd/222:20:002
22772994821,6cyclictest33-21ksoftirqd/200:10:002
22772994819,6cyclictest33-21ksoftirqd/221:35:202
22772994819,4cyclictest33-21ksoftirqd/219:25:162
22772994817,5cyclictest33-21ksoftirqd/219:50:182
22772994810,7cyclictest33-21ksoftirqd/222:48:402
134491480,4ptp4l0-21swapper/322:10:473
134491480,4ptp4l0-21swapper/320:49:243
134491480,4ptp4l0-21swapper/320:21:293
134491480,4ptp4l0-21swapper/319:52:173
134491480,4ptp4l0-21swapper/300:26:053
134491480,4ptp4l0-21swapper/219:17:252
134491480,3ptp4l0-21swapper/323:38:073
134491480,3ptp4l0-21swapper/221:45:492
22772994721,6cyclictest33-21ksoftirqd/220:19:072
134491470,4ptp4l0-21swapper/319:13:323
134491470,4ptp4l0-21swapper/300:15:463
134491470,3ptp4l0-21swapper/223:00:262
134491470,2ptp4l0-21swapper/320:19:503
22772994634,4cyclictest33-21ksoftirqd/223:25:522
22772994622,6cyclictest33-21ksoftirqd/219:33:222
22772994616,3cyclictest33-21ksoftirqd/220:55:142
2277299460,2cyclictest121rcu_preempt21:27:462
22771994615,29cyclictest19989-21kworker/1:121:22:191
134491460,3ptp4l0-21swapper/323:30:393
134491460,3ptp4l0-21swapper/321:49:433
134491460,3ptp4l0-21swapper/321:31:183
22772994514,8cyclictest33-21ksoftirqd/220:30:152
134491450,9ptp4l0-21swapper/023:34:230
134491450,4ptp4l0-21swapper/300:02:163
134491450,3ptp4l0-21swapper/321:39:143
134491450,11ptp4l0-21swapper/021:15:230
22772994416,3cyclictest33-21ksoftirqd/222:04:572
2277199449,34cyclictest0-21swapper/121:27:481
134491440,9ptp4l0-21swapper/020:59:240
134491440,9ptp4l0-21swapper/019:36:180
134491440,9ptp4l0-21swapper/000:21:580
134491440,4ptp4l9098-21apt-get21:00:140
134491440,4ptp4l16204-21apt-get21:15:151
134491440,3ptp4l0-21swapper/322:55:293
134491440,3ptp4l0-21swapper/223:53:422
134491440,10ptp4l0-21swapper/023:50:380
2277299430,2cyclictest121rcu_preempt19:21:232
134491430,9ptp4l0-21swapper/023:57:180
134491430,9ptp4l0-21swapper/000:09:460
134491430,5ptp4l0-21swapper/300:10:133
134491430,4ptp4l22079-21ntp_states22:35:240
134491430,3ptp4l0-21swapper/321:25:383
2277299421,2cyclictest121rcu_preempt20:22:042
22771994214,27cyclictest19989-21kworker/1:121:50:391
134491420,5ptp4l0-21swapper/322:05:133
134491420,5ptp4l0-21swapper/321:40:223
134491420,5ptp4l0-21swapper/022:57:330
134491420,5ptp4l0-21swapper/022:45:190
134491420,4ptp4l31859-21ls22:55:251
134491420,4ptp4l3107-21iostat21:55:180
134491420,4ptp4l26692-21irqstats22:45:191
134491420,4ptp4l12274-21apt-get00:35:143
134491420,4ptp4l0-21swapper/022:20:240
134491410,9ptp4l0-21swapper/322:38:413
134491410,9ptp4l0-21swapper/023:47:400
134491410,8ptp4l0-21swapper/321:10:183
134491410,5ptp4l9-21ksoftirqd/021:45:220
134491410,5ptp4l707-21ntpq19:30:213
134491410,5ptp4l30274-21iostat_ios20:35:203
134491410,5ptp4l2277099cyclictest20:45:210
134491410,5ptp4l12678-21/usr/sbin/munin21:05:260
134491410,5ptp4l0-21swapper/023:40:120
134491410,5ptp4l0-21swapper/000:30:550
134491410,5ptp4l0-21swapper/000:19:590
134491410,4ptp4l570-21meminfo19:30:190
134491410,4ptp4l19685-21meminfo21:20:220
134491410,4ptp4l10549-21iostat_ios00:30:211
134491410,4ptp4l0-21swapper/323:09:143
134491410,4ptp4l0-21swapper/321:05:153
134491410,4ptp4l0-21swapper/320:30:133
134491410,4ptp4l0-21swapper/023:35:200
134491410,4ptp4l0-21swapper/022:30:130
134491410,4ptp4l0-21swapper/022:00:220
134491410,4ptp4l0-21swapper/021:30:220
134491410,4ptp4l0-21swapper/020:35:590
134491410,4ptp4l0-21swapper/020:05:040
134491410,4ptp4l0-21swapper/019:25:290
134491410,4ptp4l0-21swapper/019:15:220
134491410,4ptp4l0-21swapper/019:10:000
134491410,3ptp4l8253-21iostat_ios00:25:190
134491410,3ptp4l0-21swapper/323:02:403
134491410,10ptp4l0-21swapper/019:53:010
22771994010,29cyclictest0-21swapper/122:51:581
134491400,5ptp4l0-21swapper/322:45:133
134491400,5ptp4l0-21swapper/321:15:163
134491400,5ptp4l0-21swapper/320:40:133
134491400,5ptp4l0-21swapper/100:35:241
134491400,5ptp4l0-21swapper/022:05:060
134491400,5ptp4l0-21swapper/021:10:260
134491400,5ptp4l0-21swapper/020:25:270
134491400,4ptp4l31517-21ntp_states00:05:263
134491400,4ptp4l11228-21apt-get19:55:153
134491400,4ptp4l0-21swapper/323:55:263
134491400,4ptp4l0-21swapper/323:10:263
134491400,4ptp4l0-21swapper/319:35:153
134491400,4ptp4l0-21swapper/319:25:163
134491400,4ptp4l0-21swapper/023:16:580
134491400,4ptp4l0-21swapper/022:16:560
134491400,4ptp4l0-21swapper/022:10:270
134491400,4ptp4l0-21swapper/021:50:170
134491400,4ptp4l0-21swapper/021:35:450
134491400,4ptp4l0-21swapper/020:42:180
134491400,4ptp4l0-21swapper/020:20:080
134491400,4ptp4l0-21swapper/020:00:590
134491400,4ptp4l0-21swapper/019:45:520
134491400,4ptp4l0-21swapper/019:44:360
134491400,4ptp4l0-21swapper/019:20:090
134491400,4ptp4l0-21swapper/000:01:180
134491400,3ptp4l25064-21ls22:40:280
134491400,3ptp4l16796-21hddtemp_smartct22:25:170
2277199399,29cyclictest19989-21kworker/1:122:00:391
22771993933,4cyclictest25-21ksoftirqd/120:59:241
22771993926,4cyclictest25-21ksoftirqd/120:13:511
22771993914,3cyclictest24176-21irqstats21:30:201
134491390,5ptp4l750-21irqrtprio21:50:203
134491390,5ptp4l2277399cyclictest23:41:413
134491390,5ptp4l17178-21cut20:05:273
134491390,5ptp4l0-21swapper/323:25:093
134491390,5ptp4l0-21swapper/021:42:260
134491390,4ptp4l0-21swapper/320:10:163
134491390,4ptp4l0-21swapper/123:53:191
134491390,4ptp4l0-21swapper/121:43:081
134491390,4ptp4l0-21swapper/120:30:241
134491390,4ptp4l0-21swapper/022:50:160
134491390,4ptp4l0-21swapper/021:25:520
134491390,4ptp4l0-21swapper/020:30:280
134491390,4ptp4l0-21swapper/020:15:380
134491390,4ptp4l0-21swapper/019:55:470
134491390,4ptp4l0-21swapper/000:11:290
134491390,3ptp4l9980-21apt-get00:30:153
134491390,3ptp4l0-21swapper/119:14:061
22771993825,4cyclictest25-21ksoftirqd/120:48:531
134491380,4ptp4l0-21swapper/123:18:321
134491380,4ptp4l0-21swapper/123:08:531
134491380,4ptp4l0-21swapper/122:22:571
134491380,4ptp4l0-21swapper/121:35:161
134491380,4ptp4l0-21swapper/120:35:071
134491380,4ptp4l0-21swapper/119:56:411
134491380,3ptp4l0-21swapper/323:50:123
134491380,3ptp4l0-21swapper/319:45:293
134491380,3ptp4l0-21swapper/122:44:581
134491380,3ptp4l0-21swapper/122:05:201
134491380,3ptp4l0-21swapper/119:52:211
134491380,16ptp4l25-21ksoftirqd/121:01:321
2277199376,29cyclictest0-21swapper/119:20:591
134491370,4ptp4l0-21swapper/123:11:511
134491370,4ptp4l0-21swapper/121:11:171
134491370,4ptp4l0-21swapper/120:00:281
134491370,4ptp4l0-21swapper/119:15:201
134491370,4ptp4l0-21swapper/100:17:401
134491370,3ptp4l0-21swapper/123:45:491
134491370,3ptp4l0-21swapper/123:21:501
134491370,3ptp4l0-21swapper/123:01:181
134491370,3ptp4l0-21swapper/122:30:321
134491370,3ptp4l0-21swapper/122:27:121
134491370,3ptp4l0-21swapper/122:16:561
134491370,3ptp4l0-21swapper/122:12:591
134491370,3ptp4l0-21swapper/121:59:581
134491370,3ptp4l0-21swapper/121:05:261
134491370,3ptp4l0-21swapper/120:40:031
134491370,3ptp4l0-21swapper/120:26:401
134491370,3ptp4l0-21swapper/120:06:191
134491370,3ptp4l0-21swapper/119:49:041
134491370,3ptp4l0-21swapper/119:38:161
134491370,3ptp4l0-21swapper/119:31:261
134491370,3ptp4l0-21swapper/100:27:451
22771993615,2cyclictest29224-21ntp_states00:00:251
134491360,4ptp4l0-21swapper/123:35:231
134491360,3ptp4l0-21swapper/123:29:211
134491360,3ptp4l0-21swapper/121:46:151
134491360,3ptp4l0-21swapper/119:26:461
134491350,3ptp4l0-21swapper/120:24:451
22771993414,3cyclictest20869-21hwlatdetect20:15:171
22771993327,4cyclictest25-21ksoftirqd/123:58:121
22771992822,4cyclictest25-21ksoftirqd/100:05:231
134491250,3ptp4l0-21swapper/123:41:081
134491230,3ptp4l0-21swapper/123:34:231
223962224,4sleep20-21swapper/219:08:582
22771991914,3cyclictest6363-21missed_timers00:20:221
210042143,6sleep30-21swapper/319:05:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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