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2026-05-10 - 09:06
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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 792 highest latencies:
System rack1slot1.osadl.org (updated Sun May 10, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
177222213148,22sleep20-21swapper/219:09:592
173932213150,51sleep00-21swapper/019:05:430
173862202163,25sleep30-21swapper/319:05:383
175502198161,24sleep10-21swapper/119:07:451
93112590,0sleep10-21swapper/123:58:371
239632560,0sleep00-21swapper/019:20:140
83432160,1sleep228-21ksoftirqd/223:14:372
1780099150,14cyclictest0-21swapper/123:50:181
320932140,0sleep10-21swapper/119:35:201
1780099140,14cyclictest0-21swapper/123:30:121
1780099140,14cyclictest0-21swapper/122:46:591
1780099140,14cyclictest0-21swapper/122:46:591
1780099140,13cyclictest0-21swapper/122:40:101
1780099140,13cyclictest0-21swapper/122:19:281
1780099140,13cyclictest0-21swapper/122:00:141
1780099140,13cyclictest0-21swapper/121:40:151
17808991313,0cyclictest28-21ksoftirqd/223:43:122
17808991312,1cyclictest28-21ksoftirqd/223:21:522
17808991312,1cyclictest28-21ksoftirqd/200:30:002
1780099130,13cyclictest0-21swapper/122:54:331
1780099130,13cyclictest0-21swapper/120:30:131
1780099130,12cyclictest0-21swapper/123:05:471
1780099130,12cyclictest0-21swapper/122:30:141
1780099130,12cyclictest0-21swapper/121:15:181
1780099130,12cyclictest0-21swapper/120:50:171
17808991212,0cyclictest28-21ksoftirqd/222:42:402
17808991212,0cyclictest28-21ksoftirqd/221:35:312
17808991211,1cyclictest28-21ksoftirqd/223:00:322
1780099121,10cyclictest0-21swapper/120:25:181
1780099120,12cyclictest0-21swapper/123:35:141
1780099120,12cyclictest0-21swapper/121:54:361
1780099120,12cyclictest0-21swapper/121:26:031
1780099120,12cyclictest0-21swapper/119:35:001
1780099120,12cyclictest0-21swapper/100:13:571
1780099120,11cyclictest0-21swapper/123:40:251
1780099120,11cyclictest0-21swapper/123:23:081
1780099120,11cyclictest0-21swapper/121:30:181
1780099120,11cyclictest0-21swapper/100:25:221
17796991210,1cyclictest9-21ksoftirqd/023:15:000
1780899119,1cyclictest28-21ksoftirqd/220:50:002
17808991111,0cyclictest28-21ksoftirqd/222:39:102
17808991111,0cyclictest28-21ksoftirqd/200:05:192
17808991110,1cyclictest28-21ksoftirqd/220:15:012
1780099110,9cyclictest0-21swapper/122:57:441
1780099110,9cyclictest0-21swapper/122:25:181
1780099110,11cyclictest0-21swapper/123:25:061
1780099110,11cyclictest0-21swapper/123:00:561
1780099110,11cyclictest0-21swapper/122:37:061
1780099110,11cyclictest0-21swapper/122:05:281
1780099110,11cyclictest0-21swapper/121:38:121
1780099110,11cyclictest0-21swapper/121:23:541
1780099110,11cyclictest0-21swapper/120:35:181
1780099110,11cyclictest0-21swapper/119:55:181
1780099110,11cyclictest0-21swapper/100:00:091
1780099110,10cyclictest0-21swapper/122:10:181
1780099110,10cyclictest0-21swapper/121:58:271
1780099110,10cyclictest0-21swapper/121:46:231
1780099110,10cyclictest0-21swapper/121:11:441
1780099110,10cyclictest0-21swapper/100:30:111
1780099110,10cyclictest0-21swapper/100:15:001
1780099110,10cyclictest0-21swapper/100:09:241
17796991110,1cyclictest9-21ksoftirqd/023:50:010
17796991110,1cyclictest9-21ksoftirqd/023:50:010
17796991110,1cyclictest9-21ksoftirqd/022:45:000
1781799109,1cyclictest35-21ksoftirqd/319:25:013
17817991010,0cyclictest35-21ksoftirqd/323:15:123
1781799100,8cyclictest27560-1kworker/u9:021:13:493
1780899109,1cyclictest28-21ksoftirqd/223:55:102
1780899109,1cyclictest28-21ksoftirqd/223:08:152
1780899109,1cyclictest28-21ksoftirqd/222:00:152
1780899109,1cyclictest28-21ksoftirqd/221:51:192
1780899109,1cyclictest28-21ksoftirqd/221:45:002
1780899109,1cyclictest28-21ksoftirqd/220:35:142
1780899109,1cyclictest28-21ksoftirqd/220:20:172
1780899109,1cyclictest28-21ksoftirqd/219:15:002
1780899108,1cyclictest28-21ksoftirqd/222:55:222
17808991010,0cyclictest0-21swapper/222:24:582
1780099100,9cyclictest0-21swapper/123:10:171
1780099100,9cyclictest0-21swapper/120:40:171
1780099100,9cyclictest0-21swapper/100:35:101
1780099100,7cyclictest0-21swapper/100:20:441
1780099100,6cyclictest0-21swapper/122:20:201
1780099100,10cyclictest0-21swapper/123:46:141
1780099100,10cyclictest0-21swapper/123:46:141
1780099100,10cyclictest0-21swapper/123:16:501
1780099100,10cyclictest0-21swapper/121:05:171
1780099100,10cyclictest0-21swapper/121:05:171
1780099100,10cyclictest0-21swapper/120:10:011
1780099100,10cyclictest0-21swapper/119:15:211
1779699109,1cyclictest9-21ksoftirqd/023:50:120
1779699109,1cyclictest9-21ksoftirqd/022:30:000
1779699109,1cyclictest9-21ksoftirqd/022:05:000
1779699109,1cyclictest9-21ksoftirqd/021:35:120
1779699109,1cyclictest9-21ksoftirqd/019:55:110
1779699108,1cyclictest9-21ksoftirqd/019:20:010
178179997,1cyclictest35-21ksoftirqd/322:50:013
178179997,1cyclictest35-21ksoftirqd/322:50:003
178179995,4cyclictest20717-1kworker/u9:021:29:573
178089998,1cyclictest28-21ksoftirqd/222:47:112
178089998,1cyclictest28-21ksoftirqd/222:47:112
178089998,1cyclictest28-21ksoftirqd/222:13:232
178089998,1cyclictest28-21ksoftirqd/221:31:322
178089998,1cyclictest28-21ksoftirqd/221:15:182
178089998,1cyclictest28-21ksoftirqd/221:05:212
178089998,1cyclictest28-21ksoftirqd/221:05:212
178089998,1cyclictest28-21ksoftirqd/200:38:222
178089998,1cyclictest28-21ksoftirqd/200:33:052
178089997,1cyclictest28-21ksoftirqd/221:29:592
178089997,1cyclictest28-21ksoftirqd/219:30:002
178089990,8cyclictest0-21swapper/200:03:182
178089990,3cyclictest12276-21apt-get20:05:112
178009990,8cyclictest0-21swapper/120:03:001
178009990,7cyclictest0-21swapper/120:19:041
178009990,7cyclictest0-21swapper/119:23:011
177969999,0cyclictest9-21ksoftirqd/023:25:140
177969999,0cyclictest9-21ksoftirqd/021:55:000
177969998,1cyclictest9-21ksoftirqd/023:40:110
177969998,1cyclictest9-21ksoftirqd/022:40:000
177969998,1cyclictest9-21ksoftirqd/022:20:130
177969997,1cyclictest9-21ksoftirqd/000:20:140
177969990,4cyclictest10698-21diskmemload21:25:180
178179987,1cyclictest35-21ksoftirqd/320:10:013
178179987,1cyclictest35-21ksoftirqd/300:00:013
178179986,1cyclictest23530-21snmpd22:38:553
178179986,1cyclictest23530-21snmpd22:02:573
178179981,6cyclictest20178-21munin-node00:21:223
178179981,5cyclictest5504-21munin-run21:45:003
178179980,6cyclictest12547-21ssh23:20:133
178179980,4cyclictest0-21swapper/322:24:193
178089988,0cyclictest28-21ksoftirqd/222:15:032
178089987,1cyclictest28-21ksoftirqd/223:50:262
178089987,1cyclictest28-21ksoftirqd/223:45:182
178089987,1cyclictest28-21ksoftirqd/223:45:182
178089987,1cyclictest28-21ksoftirqd/223:35:152
178089987,1cyclictest28-21ksoftirqd/223:30:222
178089987,1cyclictest28-21ksoftirqd/223:16:502
178089987,1cyclictest28-21ksoftirqd/222:50:012
178089987,1cyclictest28-21ksoftirqd/221:58:572
178089987,1cyclictest28-21ksoftirqd/219:20:192
178089987,1cyclictest28-21ksoftirqd/200:10:142
178089986,1cyclictest28-21ksoftirqd/223:25:182
178089986,1cyclictest28-21ksoftirqd/221:22:042
178089986,1cyclictest28-21ksoftirqd/221:10:132
178089986,1cyclictest28-21ksoftirqd/220:55:142
178089986,1cyclictest28-21ksoftirqd/220:50:122
178089986,1cyclictest28-21ksoftirqd/220:44:592
178089986,1cyclictest28-21ksoftirqd/220:00:192
178089980,6cyclictest32411-21kworker/2:119:51:502
178009980,8cyclictest0-21swapper/120:25:001
178009980,8cyclictest0-21swapper/119:25:161
178009980,7cyclictest0-21swapper/119:50:151
177969988,0cyclictest9-21ksoftirqd/023:15:150
177969988,0cyclictest9-21ksoftirqd/023:05:130
177969988,0cyclictest9-21ksoftirqd/020:55:140
177969988,0cyclictest9-21ksoftirqd/020:25:130
177969988,0cyclictest9-21ksoftirqd/020:00:140
177969987,1cyclictest9-21ksoftirqd/023:35:140
177969987,1cyclictest9-21ksoftirqd/023:30:160
177969987,1cyclictest9-21ksoftirqd/022:30:130
177969987,1cyclictest9-21ksoftirqd/022:15:130
177969987,1cyclictest9-21ksoftirqd/020:45:140
177969987,1cyclictest9-21ksoftirqd/020:10:000
177969987,1cyclictest9-21ksoftirqd/019:35:130
177969987,1cyclictest9-21ksoftirqd/000:15:130
177969986,1cyclictest9-21ksoftirqd/021:45:140
177969986,1cyclictest13476-21uname23:20:170
177969985,3cyclictest9-21ksoftirqd/021:40:220
177969984,1cyclictest13987-21perl21:55:140
177969983,1cyclictest27284-21ssh21:30:150
177969980,7cyclictest16405-21ssh00:07:250
178179976,1cyclictest0-21swapper/321:32:433
178179975,1cyclictest35-21ksoftirqd/300:29:593
178179975,1cyclictest32186-21cat23:45:153
178179975,1cyclictest32186-21cat23:45:143
178179975,1cyclictest23530-21snmpd22:42:223
178179975,1cyclictest23530-21snmpd22:28:343
178179975,1cyclictest23530-21snmpd21:56:453
178179975,1cyclictest23530-21snmpd20:37:043
178179975,1cyclictest23530-21snmpd20:27:553
178179975,1cyclictest23530-21snmpd19:30:563
178179975,1cyclictest23530-21snmpd00:34:133
178179973,3cyclictest0-21swapper/319:45:133
178179971,3cyclictest10698-21diskmemload22:10:063
178179970,3cyclictest0-21swapper/300:00:173
178089977,0cyclictest28-21ksoftirqd/222:25:342
178089976,1cyclictest28-21ksoftirqd/222:30:552
178089976,1cyclictest28-21ksoftirqd/222:07:322
178089976,1cyclictest28-21ksoftirqd/221:45:072
178089976,1cyclictest28-21ksoftirqd/219:15:012
178089976,1cyclictest28-21ksoftirqd/200:20:042
178089976,1cyclictest28-21ksoftirqd/200:15:162
178089976,1cyclictest20174-21kworker/2:019:30:142
178089975,1cyclictest23530-21snmpd21:01:282
178089970,6cyclictest0-21swapper/220:30:132
178089970,6cyclictest0-21swapper/219:40:122
178009970,7cyclictest0-21swapper/120:45:141
178009970,7cyclictest0-21swapper/120:10:201
178009970,7cyclictest0-21swapper/119:11:471
178009970,5cyclictest0-21swapper/121:00:001
177969977,0cyclictest9-21ksoftirqd/022:55:120
177969976,1cyclictest9-21ksoftirqd/023:55:110
177969976,1cyclictest9-21ksoftirqd/022:50:110
177969976,1cyclictest9-21ksoftirqd/020:10:000
177969976,1cyclictest9-21ksoftirqd/019:50:130
177969976,1cyclictest29006-21/usr/sbin/munin20:40:160
177969976,1cyclictest28957-21telnet00:25:130
177969976,1cyclictest12724-21ssh00:02:360
177969976,0cyclictest6345-21telnet21:00:130
177969975,1cyclictest9-21ksoftirqd/021:10:010
177969975,1cyclictest9-21ksoftirqd/021:10:010
177969975,1cyclictest23530-21snmpd20:36:190
177969973,1cyclictest24278-21/usr/sbin/munin20:30:150
177969971,5cyclictest0-21swapper/000:10:130
177969970,6cyclictest68072chrt00:37:410
177969970,6cyclictest359-21ssh00:30:050
177969970,6cyclictest29890-21telnet23:00:120
177969970,6cyclictest28377-21sort19:30:120
177969970,6cyclictest18865-21ssh21:20:120
177969970,6cyclictest18011-21/usr/sbin/munin19:10:270
177969970,1cyclictest2898-21python20:50:200
177969970,1cyclictest24649-21ssh22:10:130
177969970,1cyclictest22769-21ssh22:05:540
177969970,1cyclictest16259-21ssh21:15:200
177969970,0cyclictest0-21swapper/021:11:250
8214260,0sleep30-21swapper/321:47:103
178179965,1cyclictest9687-21ssh22:32:413
178179965,1cyclictest9464-21ssh21:50:023
178179965,1cyclictest7555-21ssh00:39:483
178179965,1cyclictest5008-21ntpq20:55:193
178179965,1cyclictest35-21ksoftirqd/321:15:143
178179965,1cyclictest35-21ksoftirqd/319:55:003
178179965,1cyclictest31682-21ssh23:00:443
178179965,1cyclictest23530-21snmpd23:43:183
178179965,1cyclictest23530-21snmpd21:03:553
178179965,1cyclictest23530-21snmpd19:27:473
178179965,1cyclictest23530-21snmpd00:12:043
178179965,1cyclictest23199-21ssh23:34:103
178179965,1cyclictest22885-21ssh22:06:173
178179964,1cyclictest8834-21tr21:05:143
178179964,1cyclictest8834-21tr21:05:143
178179964,1cyclictest693-21runrttasks20:04:253
178179964,1cyclictest25745-21ssh23:35:473
178179964,1cyclictest23530-21snmpd23:05:023
178179964,1cyclictest23530-21snmpd22:53:113
178179964,1cyclictest23530-21snmpd22:19:583
178179964,1cyclictest23530-21snmpd21:35:523
178179964,1cyclictest23530-21snmpd21:21:413
178179964,1cyclictest23530-21snmpd19:59:393
178179964,1cyclictest23530-21snmpd00:16:403
178179962,2cyclictest13880-21apt-get00:05:113
178179961,2cyclictest0-21swapper/320:30:183
178179960,3cyclictest16289-21/usr/sbin/munin23:25:133
178179960,3cyclictest10698-21diskmemload22:55:143
178179960,2cyclictest0-21swapper/323:50:103
178179960,2cyclictest0-21swapper/323:10:133
178179960,1cyclictest240-21systemd-journal20:49:553
178089966,0cyclictest61650irq/122-eno120:15:092
178089966,0cyclictest61650irq/122-eno119:35:212
178089962,2cyclictest4572-21/usr/sbin/munin19:45:212
178089960,6cyclictest0-21swapper/219:55:122
178009960,5cyclictest2310-21taskset19:41:211
178009960,5cyclictest0-21swapper/121:05:001
178009960,5cyclictest0-21swapper/119:45:121
177969965,1cyclictest9-21ksoftirqd/019:25:150
177969960,6cyclictest18852-21ssh22:45:150
177969960,6cyclictest18852-21ssh22:45:150
177969960,6cyclictest0-21swapper/019:40:110
177969960,5cyclictest19568-21/usr/sbin/munin20:20:120
177969960,5cyclictest0-21swapper/019:45:140
177969960,0cyclictest0-21swapper/020:16:320
178179955,0cyclictest0-21swapper/320:20:273
178179955,0cyclictest0-21swapper/319:40:453
178179955,0cyclictest0-21swapper/319:13:343
178179954,1cyclictest20748-21sensors19:15:013
178179954,1cyclictest15581-21gltestperf20:10:143
178179953,1cyclictest693-21runrttasks20:50:113
178179953,1cyclictest23530-21snmpd20:41:103
178179952,2cyclictest30493-21apt-get19:35:113
178179950,1cyclictest0-21swapper/320:15:173
178089955,0cyclictest61650irq/122-eno120:25:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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