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2026-04-18 - 07:04
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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 Sat Apr 18, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24972203164,25sleep20-21swapper/219:06:102
25522201161,25sleep30-21swapper/319:06:513
24802200162,24sleep00-21swapper/019:05:550
24462200160,26sleep10-21swapper/119:05:281
50252650,0sleep00-21swapper/022:01:090
2894991614,1cyclictest28-21ksoftirqd/222:50:012
2894991514,1cyclictest28-21ksoftirqd/221:30:212
2894991513,1cyclictest28-21ksoftirqd/222:05:172
2894991513,1cyclictest28-21ksoftirqd/200:10:132
267632150,0sleep20-21swapper/200:36:432
2894991413,1cyclictest28-21ksoftirqd/223:50:132
2894991413,1cyclictest28-21ksoftirqd/222:59:122
2894991412,1cyclictest28-21ksoftirqd/223:10:182
2894991412,1cyclictest28-21ksoftirqd/221:15:012
2894991312,1cyclictest28-21ksoftirqd/223:35:132
2894991312,1cyclictest28-21ksoftirqd/223:15:112
2894991312,1cyclictest28-21ksoftirqd/220:50:002
2894991312,1cyclictest28-21ksoftirqd/219:45:132
2894991312,1cyclictest28-21ksoftirqd/200:05:102
2894991311,1cyclictest28-21ksoftirqd/222:10:152
2894991311,1cyclictest28-21ksoftirqd/221:20:112
2894991311,1cyclictest28-21ksoftirqd/220:35:002
2894991311,1cyclictest28-21ksoftirqd/220:25:002
117522130,0sleep30-21swapper/322:10:183
2906991210,1cyclictest35-21ksoftirqd/320:15:003
289499124,7cyclictest28-21ksoftirqd/222:15:152
2894991212,0cyclictest28-21ksoftirqd/200:24:592
2894991211,1cyclictest28-21ksoftirqd/223:55:202
2894991211,1cyclictest28-21ksoftirqd/223:49:272
2894991211,1cyclictest28-21ksoftirqd/222:45:172
2894991211,1cyclictest28-21ksoftirqd/222:40:212
2894991211,1cyclictest28-21ksoftirqd/222:25:172
2894991211,1cyclictest28-21ksoftirqd/219:20:122
2894991211,1cyclictest28-21ksoftirqd/219:10:142
2894991211,1cyclictest28-21ksoftirqd/200:00:112
2894991210,1cyclictest28-21ksoftirqd/221:40:182
2894991210,1cyclictest28-21ksoftirqd/219:45:012
289499119,1cyclictest28-21ksoftirqd/220:40:162
289499119,1cyclictest28-21ksoftirqd/220:40:012
289499119,1cyclictest28-21ksoftirqd/220:20:012
289499119,1cyclictest28-21ksoftirqd/220:09:592
289499119,1cyclictest28-21ksoftirqd/219:20:002
289499119,1cyclictest28-21ksoftirqd/200:34:592
289499114,1cyclictest28-21ksoftirqd/223:00:202
2894991111,0cyclictest28-21ksoftirqd/221:00:142
2894991110,1cyclictest28-21ksoftirqd/223:30:002
2894991110,1cyclictest28-21ksoftirqd/221:35:112
2894991110,1cyclictest28-21ksoftirqd/221:15:152
290699109,1cyclictest35-21ksoftirqd/300:10:013
289499109,1cyclictest28-21ksoftirqd/223:40:152
289499109,1cyclictest28-21ksoftirqd/222:35:142
289499109,1cyclictest28-21ksoftirqd/222:30:112
289499109,1cyclictest28-21ksoftirqd/221:55:162
289499109,1cyclictest28-21ksoftirqd/221:05:002
289499109,1cyclictest28-21ksoftirqd/220:25:122
289499109,1cyclictest28-21ksoftirqd/220:10:142
289499109,1cyclictest28-21ksoftirqd/200:26:162
289499109,1cyclictest28-21ksoftirqd/200:15:212
289499108,1cyclictest28-21ksoftirqd/222:00:092
289499108,1cyclictest28-21ksoftirqd/220:00:002
29069997,1cyclictest7355-21apt-get20:25:103
29069991,4cyclictest28817-21apt-get21:10:103
28949998,1cyclictest28-21ksoftirqd/223:30:122
28949998,1cyclictest28-21ksoftirqd/223:20:112
28949998,1cyclictest28-21ksoftirqd/222:20:112
28949998,1cyclictest28-21ksoftirqd/222:20:102
28949998,1cyclictest28-21ksoftirqd/221:50:212
28949998,1cyclictest28-21ksoftirqd/220:00:132
28949997,1cyclictest28-21ksoftirqd/223:10:012
28949997,1cyclictest28-21ksoftirqd/221:30:012
28949995,3cyclictest28-21ksoftirqd/219:30:012
28749998,1cyclictest9-21ksoftirqd/021:47:520
28749997,1cyclictest9-21ksoftirqd/019:32:210
28749996,2cyclictest1767-21ssh00:05:120
29069986,1cyclictest17998-21snmpd23:17:133
29069986,1cyclictest17998-21snmpd23:01:013
29069986,1cyclictest17998-21snmpd22:38:253
29069986,1cyclictest17998-21snmpd22:33:583
29069986,1cyclictest17998-21snmpd20:45:103
29069986,1cyclictest17998-21snmpd19:51:353
29069980,5cyclictest26000-21kworker/u8:000:04:463
29069980,5cyclictest20138-21apt-get21:40:113
28949987,1cyclictest28-21ksoftirqd/221:45:172
28949987,1cyclictest28-21ksoftirqd/220:55:142
28949987,1cyclictest28-21ksoftirqd/219:50:142
28949986,1cyclictest28-21ksoftirqd/220:55:002
28949986,1cyclictest28-21ksoftirqd/219:40:002
28949986,1cyclictest28-21ksoftirqd/219:40:002
28749986,1cyclictest9380-21perl22:50:140
28749986,1cyclictest9079-21cat21:25:150
28749986,1cyclictest17998-21snmpd20:45:150
28749986,1cyclictest10495-21ssh22:10:110
28749984,2cyclictest240-21systemd-journal20:45:010
28749980,7cyclictest9530-21ssh23:32:440
28749980,7cyclictest7615-21ssh21:24:200
28749980,7cyclictest30674-21ntp_states22:35:170
28749980,7cyclictest29794-21ssh21:51:060
28749980,7cyclictest28560-21diskmemload00:15:480
28749980,7cyclictest27872-21ssh00:39:430
28749980,7cyclictest24621-21ssh23:52:250
28749980,7cyclictest20295-21ssh22:21:250
28749980,7cyclictest20295-21ssh22:21:240
28749980,7cyclictest18503-21ssh23:01:320
28749980,7cyclictest17343-21ssh22:18:460
28749980,7cyclictest14560-21ssh22:56:110
28749980,7cyclictest1337-21ssh21:56:330
28749980,6cyclictest5864-21ntp_states22:45:170
28749980,4cyclictest29396-21apt-get00:00:010
28749980,2cyclictest0-21swapper/023:35:110
28749980,1cyclictest0-21swapper/023:13:360
28749980,1cyclictest0-21swapper/020:20:160
29069976,1cyclictest25267-21ntpq23:10:183
29069976,1cyclictest17998-21snmpd22:02:183
29069975,1cyclictest30106-21ssh21:51:543
29069975,1cyclictest26491-21ssh00:36:003
29069975,1cyclictest17998-21snmpd23:38:413
29069975,1cyclictest17998-21snmpd23:08:433
29069975,1cyclictest17998-21snmpd21:05:493
29069975,1cyclictest17998-21snmpd20:55:453
29069975,1cyclictest17998-21snmpd20:33:573
29069975,1cyclictest17998-21snmpd20:15:113
29069975,1cyclictest17998-21snmpd19:46:503
29069971,4cyclictest5979-21users21:20:213
29069971,3cyclictest0-21swapper/320:00:183
29069970,6cyclictest28560-21diskmemload22:40:253
29069970,3cyclictest28560-21diskmemload00:21:273
29069970,3cyclictest0-21swapper/323:53:023
29069970,1cyclictest0-21swapper/321:55:113
28949976,1cyclictest28-21ksoftirqd/219:30:162
28849970,6cyclictest0-21swapper/122:16:381
28849970,6cyclictest0-21swapper/119:20:141
28849970,3cyclictest0-21swapper/123:05:111
28849970,2cyclictest0-21swapper/100:10:131
28849970,1cyclictest0-21swapper/120:34:181
28749976,1cyclictest9-21ksoftirqd/021:04:590
28749976,1cyclictest8944-21ssh22:06:310
28749976,1cyclictest17998-21snmpd23:23:260
28749976,1cyclictest17998-21snmpd20:09:080
28749976,1cyclictest17998-21snmpd19:35:040
28749976,1cyclictest17998-21snmpd19:35:040
28749975,1cyclictest23045-21ntpq22:25:170
28749973,2cyclictest240-21systemd-journal20:50:000
28749973,1cyclictest6325-21/usr/sbin/munin19:15:170
28749971,5cyclictest28682-21ssh23:15:130
28749971,5cyclictest20699-21/usr/sbin/munin19:45:120
28749970,7cyclictest0-21swapper/023:26:280
28749970,7cyclictest0-21swapper/023:09:360
28749970,7cyclictest0-21swapper/020:11:070
28749970,6cyclictest32625-21ssh21:15:110
28749970,6cyclictest29396-21apt-get00:00:020
28749970,6cyclictest28560-21diskmemload21:40:180
28749970,6cyclictest2713-21ssh22:40:290
28749970,6cyclictest2619-21apt-get20:15:100
28749970,6cyclictest25635-21ssh22:30:030
28749970,6cyclictest18159-21sed23:45:010
28749970,6cyclictest14809-21ssh00:20:460
28749970,6cyclictest12942-21tune2fs21:30:140
28749970,6cyclictest0-21swapper/021:05:160
28749970,6cyclictest0-21swapper/000:10:150
28749970,1cyclictest20414-21ssh00:30:030
28749970,1cyclictest17883-21ssh00:25:200
28749970,1cyclictest0-21swapper/023:45:150
28749970,1cyclictest0-21swapper/021:10:370
24367270,1sleep30-21swapper/322:27:133
29069965,1cyclictest8762-21ssh23:30:413
29069965,1cyclictest6823-21sshd20:21:203
29069965,1cyclictest5217-21ssh23:26:223
29069965,1cyclictest20154-21ssh22:21:023
29069965,1cyclictest20154-21ssh22:21:013
29069965,1cyclictest1847-21ssh23:22:323
29069965,1cyclictest16285-21ssh21:35:043
29069965,1cyclictest1200-21ssh21:15:163
29069964,1cyclictest9185-21cstates00:15:153
29069964,1cyclictest8167-21ssh21:25:103
29069964,1cyclictest6723-21apt-get22:05:113
29069964,1cyclictest26570-21ntp_states19:55:173
29069964,1cyclictest17998-21snmpd20:06:243
29069963,2cyclictest16080-21latency_hist21:35:003
29069962,1cyclictest28560-21diskmemload22:48:433
29069962,1cyclictest15969-21apt-get19:35:123
29069962,1cyclictest15969-21apt-get19:35:113
29069962,1cyclictest15750-21runrttasks22:15:193
29069961,3cyclictest16640-21latency_hist20:45:013
29069961,2cyclictest18304-21aten_r1power_en23:45:123
29069960,4cyclictest0-21swapper/300:31:173
29069960,3cyclictest0-21swapper/323:44:593
29069960,3cyclictest0-21swapper/322:56:043
29069960,3cyclictest0-21swapper/322:53:203
29069960,2cyclictest0-21swapper/323:58:583
29069960,2cyclictest0-21swapper/320:35:193
29069960,2cyclictest0-21swapper/300:27:393
29069960,1cyclictest240-21systemd-journal00:14:553
28849966,0cyclictest0-21swapper/121:51:171
28849962,1cyclictest0-21swapper/121:32:171
28849961,5cyclictest0-21swapper/120:07:151
28849960,6cyclictest0-21swapper/123:41:471
28849960,6cyclictest0-21swapper/123:22:431
28849960,6cyclictest0-21swapper/122:36:201
28849960,6cyclictest0-21swapper/100:25:451
28849960,5cyclictest0-21swapper/121:05:151
28849960,5cyclictest0-21swapper/119:40:041
28849960,5cyclictest0-21swapper/100:32:541
28849960,5cyclictest0-21swapper/100:20:161
28849960,4cyclictest0-21swapper/123:49:381
28849960,4cyclictest0-21swapper/122:50:301
28849960,3cyclictest0-21swapper/100:15:131
28849960,2cyclictest0-21swapper/122:55:131
28849960,1cyclictest0-21swapper/123:37:081
28849960,1cyclictest0-21swapper/119:45:111
28849960,1cyclictest0-21swapper/119:39:531
28849960,1cyclictest0-21swapper/119:39:531
28849960,0cyclictest0-21swapper/122:20:481
28849960,0cyclictest0-21swapper/122:20:471
28849960,0cyclictest0-21swapper/122:06:121
28849960,0cyclictest0-21swapper/121:44:281
28749965,1cyclictest17998-21snmpd19:12:590
28749962,1cyclictest15856-21apt-get21:35:020
28749960,6cyclictest0-21swapper/020:25:490
28749960,6cyclictest0-21swapper/019:56:210
28749960,6cyclictest0-21swapper/019:20:550
28749960,0cyclictest0-21swapper/020:55:100
28749960,0cyclictest0-21swapper/020:35:520
28749960,0cyclictest0-21swapper/020:03:310
28749960,0cyclictest0-21swapper/019:44:260
29069954,0cyclictest28560-21diskmemload21:46:313
29069953,1cyclictest2823-21apt-get19:10:013
29069953,1cyclictest25570-21unixbench_singl21:00:213
29069953,1cyclictest17998-21snmpd19:44:493
29069952,1cyclictest10482-21chrt19:20:453
29069950,3cyclictest0-21swapper/320:50:103
29069950,0cyclictest0-21swapper/319:15:353
28849955,0cyclictest0-21swapper/121:23:121
28849955,0cyclictest0-21swapper/121:15:581
28849955,0cyclictest0-21swapper/120:26:071
28849955,0cyclictest0-21swapper/119:32:221
28849951,4cyclictest0-21swapper/122:25:071
28849951,4cyclictest0-21swapper/100:05:551
28849951,3cyclictest0-21swapper/123:51:091
28849951,3cyclictest0-21swapper/121:45:111
28849951,3cyclictest0-21swapper/120:39:551
28849951,2cyclictest0-21swapper/123:30:141
28849951,2cyclictest0-21swapper/122:40:511
28849951,2cyclictest0-21swapper/121:25:171
28849951,1cyclictest0-21swapper/122:45:171
28849950,5cyclictest0-21swapper/121:59:111
28849950,5cyclictest0-21swapper/121:12:191
28849950,5cyclictest0-21swapper/120:58:361
28849950,5cyclictest0-21swapper/120:42:391
28849950,5cyclictest0-21swapper/120:15:501
28849950,5cyclictest0-21swapper/119:59:341
28849950,5cyclictest0-21swapper/119:25:591
28849950,5cyclictest0-21swapper/119:15:151
28849950,4cyclictest0-21swapper/123:56:231
28849950,4cyclictest0-21swapper/119:50:291
28849950,3cyclictest0-21swapper/123:00:231
28849950,3cyclictest0-21swapper/122:12:091
28849950,3cyclictest0-21swapper/120:50:081
28849950,3cyclictest0-21swapper/120:20:121
28849950,2cyclictest0-21swapper/123:10:151
28849950,2cyclictest0-21swapper/100:35:121
28749950,5cyclictest0-21swapper/020:30:150
28749950,4cyclictest23050-21/usr/sbin/munin19:50:100
29069943,1cyclictest11951-21cat19:25:153
29069942,1cyclictest13612-21/usr/sbin/munin19:30:173
28849943,1cyclictest29717-21chrt20:02:481
28849943,0cyclictest0-21swapper/122:30:231
28849942,1cyclictest0-21swapper/123:15:111
28849941,2cyclictest0-21swapper/100:00:111
28849940,2cyclictest0-21swapper/123:25:161
28849940,2cyclictest0-21swapper/120:45:111
28849940,2cyclictest0-21swapper/120:10:021
28849940,1cyclictest0-21swapper/122:00:091
28849940,1cyclictest0-21swapper/121:00:511
28849940,1cyclictest0-21swapper/119:10:131
28849940,0cyclictest0-21swapper/121:35:011
28749940,4cyclictest11217-21telnet19:25:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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