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2026-05-18 - 08:02
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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 rack1slot1.osadl.org (updated Mon May 18, 2026 00:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252262209151,47sleep30-21swapper/319:06:313
254462200161,26sleep20-21swapper/219:09:242
251892199162,24sleep10-21swapper/119:06:001
251882198160,24sleep00-21swapper/019:05:590
25601991513,1cyclictest32048-21/usr/sbin/munin22:10:123
25601991512,2cyclictest26767-21latency19:10:163
2558399150,14cyclictest0-21swapper/120:30:121
25601991413,1cyclictest25963-21ssh21:19:083
25601991412,1cyclictest3488-21apt-get19:30:123
25601991412,1cyclictest12171-21timerwakeupswit19:45:213
25601991411,2cyclictest6049-21aten_r1power_cu23:45:133
25601991411,2cyclictest5022-21diskstats20:40:143
2560199133,9cyclictest29892-21ssh23:32:423
2560199133,9cyclictest12700-21ssh00:35:193
2560199133,2cyclictest5649-21ls21:35:003
2560199132,9cyclictest240-21systemd-journal23:27:143
25601991312,1cyclictest0-21swapper/323:17:233
25601991312,1cyclictest0-21swapper/321:59:563
25601991311,1cyclictest22321-21aten_r1power_po22:40:133
25601991311,1cyclictest12282-21pmu-power22:25:193
25601991310,2cyclictest5766-21sleep23:44:593
25601991310,2cyclictest19797-21interrupts21:10:163
2559399130,12cyclictest0-21swapper/223:35:142
2557799130,12cyclictest0-21swapper/021:05:160
2560199129,2cyclictest32502-21df20:30:133
2560199129,2cyclictest0-21swapper/300:30:183
2560199123,1cyclictest8502-21ssh21:37:373
2560199123,1cyclictest8502-21ssh21:37:363
2560199123,1cyclictest31709-21df_inode19:20:143
2560199123,1cyclictest28090-21ssh22:46:253
2560199122,9cyclictest4331-21taskset22:59:503
2560199122,9cyclictest11952-21ssh21:41:443
2560199122,6cyclictest13756-21grep23:55:123
25601991211,1cyclictest25422-21diskstats00:10:153
25601991211,1cyclictest18639-21diskmemload22:21:503
25601991211,1cyclictest18639-21diskmemload21:45:133
25601991211,1cyclictest18639-21diskmemload00:19:163
25601991211,1cyclictest0-21swapper/323:10:203
25601991211,1cyclictest0-21swapper/322:50:203
25601991211,1cyclictest0-21swapper/321:20:133
25601991211,1cyclictest0-21swapper/300:05:203
2559399120,1cyclictest571-21nscd00:31:192
25577991210,1cyclictest9-21ksoftirqd/023:30:000
25577991210,1cyclictest9-21ksoftirqd/022:25:000
2557799121,5cyclictest18216-21perf22:35:000
2557799120,12cyclictest0-21swapper/020:30:130
2560199119,1cyclictest30459-21/usr/sbin/munin20:25:143
2560199118,2cyclictest13828-21irqstats19:50:163
2560199117,3cyclictest0-21swapper/323:07:163
2560199113,4cyclictest9788-21aten2.4-expect23:50:133
2560199113,1cyclictest25878-21/usr/sbin/munin20:15:183
25601991110,1cyclictest18639-21diskmemload21:50:503
25601991110,1cyclictest16964-21apt-get00:00:003
25601991110,1cyclictest0-21swapper/323:39:153
25601991110,1cyclictest0-21swapper/323:22:453
25601991110,1cyclictest0-21swapper/323:00:193
25601991110,1cyclictest0-21swapper/322:30:133
25601991110,1cyclictest0-21swapper/322:17:453
25601991110,1cyclictest0-21swapper/322:00:583
25601991110,1cyclictest0-21swapper/321:00:223
25601991110,1cyclictest0-21swapper/320:50:153
25601991110,1cyclictest0-21swapper/300:27:003
2557799119,1cyclictest9-21ksoftirqd/022:05:010
2557799119,1cyclictest9-21ksoftirqd/021:25:000
25577991110,1cyclictest9-21ksoftirqd/021:35:010
93032100,0sleep00-21swapper/000:30:420
2560199109,1cyclictest2937-21taskset20:35:173
2560199109,1cyclictest0-21swapper/322:35:183
2560199109,1cyclictest0-21swapper/319:25:433
2560199109,1cyclictest0-21swapper/300:24:313
2560199102,1cyclictest31247-21ssh22:08:373
2560199101,1cyclictest18639-21diskmemload21:25:263
2559399100,1cyclictest26093-21/usr/sbin/munin19:10:122
2557799109,1cyclictest9-21ksoftirqd/023:20:010
2557799109,1cyclictest9-21ksoftirqd/021:30:000
2557799109,1cyclictest9-21ksoftirqd/021:05:000
2557799109,1cyclictest9-21ksoftirqd/019:50:000
2557799105,4cyclictest9-21ksoftirqd/021:15:190
256019991,8cyclictest35-21ksoftirqd/321:05:033
256019991,8cyclictest35-21ksoftirqd/320:55:043
256019991,8cyclictest35-21ksoftirqd/320:20:253
256019991,8cyclictest35-21ksoftirqd/320:10:043
256019991,8cyclictest35-21ksoftirqd/320:05:033
256019991,8cyclictest35-21ksoftirqd/319:55:043
256019991,8cyclictest35-21ksoftirqd/319:40:023
256019991,8cyclictest35-21ksoftirqd/319:35:223
256019991,8cyclictest35-21ksoftirqd/319:15:033
256019991,0cyclictest35-21ksoftirqd/320:45:083
256019991,0cyclictest35-21ksoftirqd/320:00:273
255939990,5cyclictest29653-21apt-get20:25:112
255839990,0cyclictest0-21swapper/120:40:111
255779998,1cyclictest9-21ksoftirqd/023:10:000
255779998,1cyclictest9-21ksoftirqd/020:04:590
255779997,1cyclictest9-21ksoftirqd/022:10:000
255779991,8cyclictest18639-21diskmemload00:24:240
255779991,4cyclictest14499-21latency_hist22:30:000
255779990,1cyclictest240-21systemd-journal21:51:120
20317290,0sleep10-21swapper/100:03:271
255939987,1cyclictest28-21ksoftirqd/219:40:182
255939986,1cyclictest61650irq/122-eno122:45:142
255939986,1cyclictest61650irq/122-eno100:35:122
255939986,1cyclictest28-21ksoftirqd/221:19:042
255939986,1cyclictest28-21ksoftirqd/220:14:592
255939985,2cyclictest25574-21cyclictest21:29:042
255939983,2cyclictest32007-21apt-get20:30:122
255939983,2cyclictest240-21systemd-journal00:00:002
255939982,3cyclictest61650irq/122-eno123:00:492
255939982,3cyclictest0-21swapper/219:35:122
255939981,4cyclictest561-21nscd21:25:002
255939980,8cyclictest0-21swapper/223:41:362
255839980,7cyclictest0-21swapper/122:30:341
255779988,0cyclictest9-21ksoftirqd/023:40:170
255779988,0cyclictest9-21ksoftirqd/021:58:560
255779987,1cyclictest9-21ksoftirqd/022:50:140
255779986,1cyclictest168152sleep021:49:560
255779985,1cyclictest9-21ksoftirqd/020:20:010
255779984,3cyclictest9-21ksoftirqd/023:45:150
255779981,6cyclictest31048-21aten_r1power_en23:35:120
255779981,1cyclictest25946-21ssh22:45:110
255779980,7cyclictest6433-21ssh00:28:070
255779980,4cyclictest18639-21diskmemload22:57:440
255779980,0cyclictest18639-21diskmemload23:52:320
255939977,0cyclictest0-21swapper/219:49:032
255939976,1cyclictest61650irq/122-eno123:31:492
255939976,1cyclictest61650irq/122-eno123:20:592
255939976,1cyclictest61650irq/122-eno123:15:152
255939976,1cyclictest61650irq/122-eno122:51:012
255939976,1cyclictest61650irq/122-eno122:10:142
255939976,1cyclictest61650irq/122-eno121:00:002
255939976,1cyclictest61650irq/122-eno100:20:482
255939976,1cyclictest61650irq/122-eno100:14:582
255939976,1cyclictest28-21ksoftirqd/222:38:132
255939975,1cyclictest61650irq/122-eno122:55:132
255939975,1cyclictest61650irq/122-eno119:50:192
255939975,1cyclictest17395-21cat21:05:162
255939972,3cyclictest28327-21apt-get22:05:112
255939971,5cyclictest27953-21munin-node23:14:002
255939970,7cyclictest0-21swapper/222:31:162
255939970,6cyclictest0-21swapper/220:55:122
255939970,4cyclictest18639-21diskmemload22:00:122
255939970,4cyclictest0-21swapper/222:40:112
255939970,3cyclictest0-21swapper/222:15:132
255839973,4cyclictest0-21swapper/119:45:211
255779977,0cyclictest9-21ksoftirqd/022:15:150
255779976,1cyclictest9-21ksoftirqd/023:55:130
255779976,1cyclictest9-21ksoftirqd/021:10:130
255779976,1cyclictest9-21ksoftirqd/020:10:000
255779976,1cyclictest25058-1kworker/u9:122:43:230
255779975,1cyclictest9-21ksoftirqd/023:05:140
255779973,1cyclictest17444-21/usr/sbin/munin00:00:130
255779970,6cyclictest21188-21hostname00:05:120
255779970,6cyclictest19816-21ssh23:20:110
255779970,6cyclictest0-21swapper/023:35:000
255779970,6cyclictest0-21swapper/020:20:200
255779970,6cyclictest0-21swapper/020:10:100
255779970,6cyclictest0-21swapper/019:19:550
255779970,1cyclictest9123-21ssh21:39:220
255779970,1cyclictest9123-21ssh21:39:220
255779970,1cyclictest8997-21munin-run20:50:010
255779970,1cyclictest4673-21ssh23:00:060
255779970,1cyclictest4510-21/usr/sbin/munin20:40:160
255779970,1cyclictest29078-21expr00:15:140
255779970,1cyclictest25524-21grep00:10:140
255779970,1cyclictest13855-21ssh00:37:270
255779970,1cyclictest0-21swapper/022:10:120
255779970,1cyclictest0-21swapper/021:41:540
11505270,0sleep20-21swapper/221:40:312
255939966,0cyclictest61650irq/122-eno123:50:212
255939966,0cyclictest61650irq/122-eno123:25:502
255939966,0cyclictest61650irq/122-eno123:05:402
255939966,0cyclictest61650irq/122-eno122:25:172
255939966,0cyclictest61650irq/122-eno122:20:212
255939966,0cyclictest61650irq/122-eno121:55:122
255939966,0cyclictest61650irq/122-eno121:50:452
255939966,0cyclictest61650irq/122-eno121:46:132
255939966,0cyclictest61650irq/122-eno121:35:222
255939966,0cyclictest61650irq/122-eno121:35:222
255939966,0cyclictest61650irq/122-eno121:30:142
255939966,0cyclictest61650irq/122-eno121:10:042
255939966,0cyclictest61650irq/122-eno120:50:152
255939966,0cyclictest61650irq/122-eno120:16:422
255939966,0cyclictest61650irq/122-eno119:32:232
255939966,0cyclictest61650irq/122-eno119:20:562
255939966,0cyclictest61650irq/122-eno100:00:122
255939965,1cyclictest61650irq/122-eno123:45:152
255939965,1cyclictest61650irq/122-eno119:30:002
255939965,1cyclictest61650irq/122-eno100:25:122
255939965,1cyclictest30786-21ssh00:16:262
255939965,1cyclictest28-21ksoftirqd/220:45:012
255939965,1cyclictest28-21ksoftirqd/220:22:072
255939964,1cyclictest2264-21cstates20:35:142
255939961,2cyclictest240-21systemd-journal00:05:462
255939960,5cyclictest0-21swapper/220:05:172
255939960,3cyclictest29588-21gltestperf19:15:172
255939960,2cyclictest0-21swapper/220:45:122
255839965,1cyclictest0-21swapper/119:15:161
255839962,2cyclictest0-21swapper/123:10:361
255839960,6cyclictest0-21swapper/123:25:011
255839960,5cyclictest0-21swapper/121:35:201
255839960,5cyclictest0-21swapper/121:35:201
255839960,5cyclictest0-21swapper/121:05:171
255839960,3cyclictest0-21swapper/122:28:121
255839960,3cyclictest0-21swapper/122:06:531
255839960,2cyclictest0-21swapper/123:45:131
255839960,1cyclictest0-21swapper/123:35:151
255779964,1cyclictest13730-21sendmail-msp20:59:590
255779963,2cyclictest4239-21head19:30:140
255779963,1cyclictest240-21systemd-journal19:43:100
255779960,6cyclictest0-21swapper/019:59:570
255779960,6cyclictest0-21swapper/019:11:460
255779960,5cyclictest20458-21ssh22:35:570
255779960,0cyclictest0-21swapper/020:50:130
255779960,0cyclictest0-21swapper/020:38:060
255779960,0cyclictest0-21swapper/019:50:400
24902260,0sleep10-21swapper/120:15:131
255939955,0cyclictest61650irq/122-eno120:00:112
255939954,0cyclictest61650irq/122-eno119:57:552
255839955,0cyclictest0-21swapper/123:18:411
255839955,0cyclictest0-21swapper/121:47:271
255839951,2cyclictest0-21swapper/123:05:131
255839951,2cyclictest0-21swapper/120:56:131
255839951,2cyclictest0-21swapper/100:15:161
255839951,1cyclictest121682sleep121:42:201
255839951,1cyclictest0-21swapper/122:50:111
255839950,5cyclictest0-21swapper/123:56:361
255839950,5cyclictest0-21swapper/122:42:211
255839950,5cyclictest0-21swapper/121:30:151
255839950,4cyclictest0-21swapper/123:52:491
255839950,4cyclictest0-21swapper/123:30:131
255839950,4cyclictest0-21swapper/122:56:291
255839950,4cyclictest0-21swapper/122:00:411
255839950,4cyclictest0-21swapper/121:55:401
255839950,4cyclictest0-21swapper/121:20:211
255839950,3cyclictest0-21swapper/121:15:171
255839950,3cyclictest0-21swapper/120:50:121
255839950,3cyclictest0-21swapper/100:25:171
255839950,2cyclictest0-21swapper/121:52:411
255839950,1cyclictest0-21swapper/123:03:541
255839950,1cyclictest0-21swapper/122:35:111
255839950,1cyclictest0-21swapper/122:20:121
255839950,1cyclictest0-21swapper/121:10:131
255839950,1cyclictest0-21swapper/120:21:441
255839950,1cyclictest0-21swapper/100:40:001
255839950,1cyclictest0-21swapper/100:31:361
255839950,1cyclictest0-21swapper/100:06:341
255839950,0cyclictest0-21swapper/119:55:201
255779954,1cyclictest9-21ksoftirqd/019:25:140
255779954,1cyclictest6978-21ntpq19:35:170
255779952,1cyclictest240-21systemd-journal20:26:400
255779950,4cyclictest31203-21/usr/sbin/munin19:20:170
255839942,1cyclictest19526-21chrt20:02:011
255839942,1cyclictest0-21swapper/123:40:121
255839942,1cyclictest0-21swapper/119:35:111
255839941,2cyclictest0-21swapper/121:00:001
255839941,2cyclictest0-21swapper/119:40:181
255839941,1cyclictest0-21swapper/122:45:031
255839941,1cyclictest0-21swapper/122:10:211
255839941,1cyclictest0-21swapper/100:11:251
255839940,3cyclictest0-21swapper/122:15:211
255839940,3cyclictest0-21swapper/121:28:351
255839940,3cyclictest0-21swapper/120:50:001
255839940,1cyclictest3084-21chrt19:28:001
255839940,1cyclictest0-21swapper/123:25:371
255839940,1cyclictest0-21swapper/120:40:011
255839940,1cyclictest0-21swapper/120:10:171
255839940,1cyclictest0-21swapper/119:10:141
255839940,1cyclictest0-21swapper/100:20:111
255839940,0cyclictest0-21swapper/119:20:201
4553230,1sleep10-21swapper/119:30:181
255839930,3cyclictest0-21swapper/119:50:061
255839930,2cyclictest0-21swapper/120:25:201
255839930,2cyclictest0-21swapper/120:05:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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