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2026-05-07 - 16:25
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot2.osadl.org (updated Thu May 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1746224737,0sleep10-21swapper/107:20:361
1737224229,0sleep20-21swapper/207:19:332
1746624026,0sleep00-21swapper/007:20:390
1728223626,0sleep30-21swapper/307:18:303
8305060,0irq/26-0000:00:14461-21munin-run09:32:052
4160,0ktimersoftd/00-21swapper/011:23:460
339960,0migration/37270-21sh09:43:523
339960,0migration/35081-21sh11:37:073
339960,0migration/329913-21gltestperf08:37:193
339960,0migration/32543-21ntp_offset11:32:273
339960,0migration/325271-21sh11:09:253
339960,0migration/324823-21timerandwakeup12:22:313
339960,0migration/317076-21munin-node08:47:253
339960,0migration/314764-21aten_r1power_cu09:32:153
329960,0watchdog/30-21swapper/311:02:213
29815060,0irq/29-eth0-tx-13412-21munin-node10:27:252
19160,0ktimersoftd/129044-21diskmemload11:23:461
176569966,0cyclictest0-21swapper/111:54:121
176569960,0cyclictest0-21swapper/109:12:171
339950,0migration/39651-21kthreadcore11:57:223
339950,0migration/38978-21kthreadcore09:27:223
339950,0migration/38223-21fschecks_time08:22:193
339950,0migration/35509-21runrttasks10:38:523
339950,0migration/34284-21kthreadcore07:32:243
339950,0migration/33305-21kthreadcore09:02:223
339950,0migration/329922-21kthreadcore12:27:233
339950,0migration/328700-21taskset08:36:163
339950,0migration/32805-21kthreadcore10:57:223
339950,0migration/326791-21fschecks_count09:57:183
339950,0migration/325893-21fschecks_time07:27:183
339950,0migration/324242-21fschecks_count09:37:183
339950,0migration/323584-21munin-node09:17:243
339950,0migration/323473-21kthreadcore12:42:233
339950,0migration/322762-21kthreadcore11:27:223
339950,0migration/321563-21kthreadcore08:52:233
339950,0migration/319682-21munin-node11:42:243
339950,0migration/315241-21fschecks_time08:27:173
339950,0migration/313558-21kthreadcore09:47:243
339950,0migration/310240-21kthreadcore09:07:233
329950,0watchdog/325858-21df08:57:163
329950,0watchdog/311883-21df11:22:173
329950,0watchdog/30-21swapper/310:17:243
29815050,0irq/29-eth0-tx-9410-21timerwakeupswit11:17:312
29815050,0irq/29-eth0-tx-6939-21ssh10:42:112
29815050,0irq/29-eth0-tx-29011-21munin-node08:37:170
29815050,0irq/29-eth0-tx-25065-21munin-node07:27:320
29815050,0irq/29-eth0-tx-18261-21cat09:32:222
29815050,0irq/29-eth0-tx-10017-21ssh09:47:222
29815050,0irq/29-eth0-tx-0-21swapper/212:42:412
29815050,0irq/29-eth0-tx-0-21swapper/211:52:422
29815050,0irq/29-eth0-tx-0-21swapper/211:49:032
29815050,0irq/29-eth0-tx-0-21swapper/211:26:392
29815050,0irq/29-eth0-tx-0-21swapper/009:22:260
29815050,0irq/29-eth0-tx-0-21swapper/008:49:490
29815050,0irq/29-eth0-tx-0-21swapper/008:42:190
29805050,0irq/28-eth0-rx-9014-21cut10:22:243
29805050,0irq/28-eth0-rx-31324-21kthreadcore09:22:223
29805050,0irq/28-eth0-rx-30804-21ntp_kernel_err12:07:273
29805050,0irq/28-eth0-rx-26117-21kthreadcore11:47:243
29805050,0irq/28-eth0-rx-24051-21munin-node09:52:303
29805050,0irq/28-eth0-rx-17143-21ssh12:19:333
29805050,0irq/28-eth0-rx-15577-21ssh10:47:083
29805050,0irq/28-eth0-rx-0-21swapper/312:39:233
29805050,0irq/28-eth0-rx-0-21swapper/310:42:183
29805050,0irq/28-eth0-rx-0-21swapper/310:13:243
29805050,0irq/28-eth0-rx-0-21swapper/310:09:383
29805050,0irq/28-eth0-rx-0-21swapper/307:52:243
259950,0migration/29839-21aten_r1power_vo12:17:182
259950,0migration/23681-21sh09:22:422
259950,0migration/230916-21kthreadcore08:37:222
259950,0migration/22378-21kthreadcore10:37:232
259950,0migration/223745-21aten_r1power_vo09:37:162
259950,0migration/223594-21sh10:51:022
259950,0migration/221056-21switchtime09:12:292
259950,0migration/213276-21missed_timers08:22:242
259950,0migration/21111-21taskset11:13:162
249950,0watchdog/220658-21grep10:12:162
249950,0watchdog/214809-21cpuspeed_turbos08:27:162
176619955,0cyclictest0-21swapper/212:01:422
176619955,0cyclictest0-21swapper/211:02:262
176619950,0cyclictest0-21swapper/212:30:432
176619950,0cyclictest0-21swapper/211:37:542
176619950,0cyclictest0-21swapper/210:09:272
176569950,0cyclictest0-21swapper/112:12:011
176569950,0cyclictest0-21swapper/110:45:181
176569950,0cyclictest0-21swapper/110:35:031
176569950,0cyclictest0-21swapper/109:35:181
176539955,0cyclictest6168-21kworker/0:212:42:070
176539955,0cyclictest6168-21kworker/0:212:37:430
176539955,0cyclictest6168-21kworker/0:212:27:310
176539955,0cyclictest6168-21kworker/0:212:22:230
176539955,0cyclictest6168-21kworker/0:212:17:450
176539955,0cyclictest6168-21kworker/0:212:07:410
176539955,0cyclictest6168-21kworker/0:212:02:250
176539955,0cyclictest6168-21kworker/0:211:57:150
176539955,0cyclictest6168-21kworker/0:211:52:210
176539955,0cyclictest6168-21kworker/0:211:47:190
176539955,0cyclictest6168-21kworker/0:211:42:510
176539955,0cyclictest6168-21kworker/0:211:33:590
176539955,0cyclictest6168-21kworker/0:211:27:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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