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2026-09-03 - 01:20
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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 Wed Sep 02, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1962823928,0sleep30-21swapper/307:28:193
1954123627,0sleep20-21swapper/207:27:182
1983823524,0sleep00-21swapper/007:30:480
1954022723,0sleep10-21swapper/107:27:171
19989991010,0cyclictest3524-21snmpd08:58:180
4170,0ktimersoftd/00-21swapper/012:36:150
329970,0watchdog/332128-21ssh11:05:283
35160,0ktimersoftd/30-21swapper/312:36:153
339960,0migration/37864-21munin-node10:51:593
339960,0migration/35969-21sh12:22:163
339960,0migration/33895-21latency_hist11:46:453
339960,0migration/319136-21munin-node12:52:003
339960,0migration/315271-21munin-node11:12:073
29815060,0irq/29-eth0-tx-2671-21munin-node09:12:100
29805060,0irq/28-eth0-rx-20327-21irqstats10:02:023
29805060,0irq/28-eth0-rx-16290-21sh09:41:443
27160,0ktimersoftd/20-21swapper/212:36:152
199919966,0cyclictest83050irq/26-0000:00:10:26:502
199919960,0cyclictest0-21swapper/212:06:042
19160,0ktimersoftd/10-21swapper/112:36:151
149960,0migration/05399-21sh12:05:580
149960,0migration/015167-21sh12:28:530
149960,0migration/010523-21sh11:31:310
4150,0ktimersoftd/00-21swapper/012:37:270
35150,0ktimersoftd/30-21swapper/310:22:243
339950,0migration/38775-21pmu-power09:12:053
339950,0migration/38650-21fschecks_time12:26:593
339950,0migration/38103-21taskset12:42:553
339950,0migration/37578-21kthreadcore12:07:013
339950,0migration/36169-21taskset09:33:083
339950,0migration/32975-21kthreadcore10:47:043
339950,0migration/329583-21kthreadcore09:47:043
339950,0migration/327093-21kthreadcore09:27:033
339950,0migration/324944-21fschecks_time08:41:593
339950,0migration/324538-21kthreadcore10:42:033
339950,0migration/32246-21munin-node07:41:563
339950,0migration/321483-21munin-node11:56:573
339950,0migration/31924-21taskset07:41:013
339950,0migration/317562-21fschecks_time07:51:593
339950,0migration/315562-21munin-node12:12:013
339950,0migration/314584-21fschecks_time10:37:003
339950,0migration/314123-21munin-node08:11:593
329950,0watchdog/331559-21ps12:37:133
329950,0watchdog/322860-21kthreadcore09:22:043
329950,0watchdog/321717-21wc10:57:043
329950,0watchdog/315989-21kthreadcore11:32:043
329950,0watchdog/31585-21kthreadcore08:47:043
329950,0watchdog/314282-21fschecks_time08:57:003
329950,0watchdog/30-21swapper/309:02:043
29815050,0irq/29-eth0-tx-2859-21iostat09:52:032
29815050,0irq/29-eth0-tx-26735-21munin-node12:57:112
29815050,0irq/29-eth0-tx-2243-21munin-node07:41:590
29815050,0irq/29-eth0-tx-18425-21cut10:57:032
29815050,0irq/29-eth0-tx-16991-21munin-node08:37:100
29815050,0irq/29-eth0-tx-12922-21tune2fs10:17:012
29815050,0irq/29-eth0-tx-0-21swapper/211:07:032
29815050,0irq/29-eth0-tx-0-21swapper/210:50:042
29815050,0irq/29-eth0-tx-0-21swapper/210:24:432
29815050,0irq/29-eth0-tx-0-21swapper/209:36:582
29815050,0irq/29-eth0-tx-0-21swapper/009:08:210
29815050,0irq/29-eth0-tx-0-21swapper/008:52:100
29815050,0irq/29-eth0-tx-0-21swapper/008:52:100
29805050,0irq/28-eth0-rx-363-21yum11:22:123
29805050,0irq/28-eth0-rx-30841-21kthreadcore09:07:023
29805050,0irq/28-eth0-rx-1763-21kthreadcore10:27:033
29805050,0irq/28-eth0-rx-17076-21ssh09:57:403
29805050,0irq/28-eth0-rx-1173-21fschecks_time11:06:593
29805050,0irq/28-eth0-rx-0-21swapper/312:57:123
29805050,0irq/28-eth0-rx-0-21swapper/312:50:393
29805050,0irq/28-eth0-rx-0-21swapper/312:05:553
29805050,0irq/28-eth0-rx-0-21swapper/311:39:063
29805050,0irq/28-eth0-rx-0-21swapper/311:31:183
29805050,0irq/28-eth0-rx-0-21swapper/311:17:053
29805050,0irq/28-eth0-rx-0-21swapper/309:53:273
29805050,0irq/28-eth0-rx-0-21swapper/309:42:113
29805050,0irq/28-eth0-rx-0-21swapper/308:51:563
29805050,0irq/28-eth0-rx-0-21swapper/308:51:563
27150,0ktimersoftd/20-21swapper/211:46:212
259950,0migration/27161-21sh09:35:462
259950,0migration/232132-21needreboot11:22:042
259950,0migration/229182-21kthreadcore10:07:032
259950,0migration/220020-21taskset08:14:262
259950,0migration/219438-21aten_r1power_cu11:36:582
259950,0migration/217125-21kthreadcore10:37:042
259950,0migration/21518-21kthreadcore12:22:032
259950,0migration/214609-21sh10:54:112
259950,0migration/214324-21kthreadcore11:52:022
259950,0migration/213243-21kthreadcore12:27:042
259950,0migration/212375-21kthreadcore12:47:032
249950,0watchdog/226681-21munin-node08:17:082
249950,0watchdog/224359-21aten2.4-expect11:01:562
249950,0watchdog/218494-21tune2fs11:17:002
249950,0watchdog/214416-21tr09:57:042
199919955,0cyclictest0-21swapper/211:34:222
199919955,0cyclictest0-21swapper/207:51:462
199919950,0cyclictest0-21swapper/210:41:522
199919950,0cyclictest0-21swapper/210:13:222
199909955,0cyclictest0-21swapper/112:58:041
199909955,0cyclictest0-21swapper/110:46:541
199909950,0cyclictest0-21swapper/112:56:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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