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2026-07-29 - 18:05
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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 Jul 29, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
405323728,0sleep30-21swapper/307:24:383
436923526,0sleep10-21swapper/107:28:161
417323526,0sleep20-21swapper/207:25:572
413623228,0sleep00-21swapper/007:25:350
44999960,0cyclictest0-21swapper/112:34:051
44999960,0cyclictest0-21swapper/109:49:111
44899966,0cyclictest0-21swapper/012:54:090
339960,0migration/36518-21sh10:38:433
339960,0migration/34432-21fschecks_time11:34:073
339960,0migration/34152-21munin-node09:59:083
339960,0migration/33281-21sh11:33:393
339960,0migration/329235-21sh11:49:003
339960,0migration/327850-21sh11:45:343
339960,0migration/324272-21sh12:23:583
339960,0migration/32235-21sh09:57:183
339960,0migration/318501-21sh12:57:123
339960,0migration/318075-21sh11:22:123
339960,0migration/31389-21sh12:47:183
29805060,0irq/28-eth0-rx-2783-21sed11:14:083
27160,0ktimersoftd/20-21swapper/210:16:082
149960,0migration/021547-21sh10:27:590
8305050,0irq/26-0000:00:12261-21crond09:03:532
8305050,0irq/26-0000:00:12187-21kthreadcore07:54:112
45079950,0cyclictest0-21swapper/212:05:342
44999955,0cyclictest11253-21sensors08:14:161
44999955,0cyclictest0-21swapper/112:47:291
44999955,0cyclictest0-21swapper/111:42:321
44999955,0cyclictest0-21swapper/110:24:581
44999955,0cyclictest0-21swapper/109:41:081
44999950,0cyclictest0-21swapper/112:25:441
44999950,0cyclictest0-21swapper/112:14:041
35150,0ktimersoftd/30-21swapper/310:16:083
339950,0migration/39036-21kthreadcore10:39:103
339950,0migration/37674-21munin-node08:34:133
339950,0migration/331719-21irqcore08:54:093
339950,0migration/328165-21kthreadcore09:34:103
339950,0migration/322383-21taskset10:45:203
339950,0migration/321879-21munin-node07:59:153
339950,0migration/32004-21cpuspeed_turbos09:19:063
339950,0migration/31953-21if_eth009:39:093
339950,0migration/318896-21sh11:23:593
339950,0migration/314946-21munin-node11:59:073
339950,0migration/314703-21kthreadcore10:04:113
339950,0migration/312417-21sh11:39:083
329950,0watchdog/38578-21kthreadcore10:19:123
329950,0watchdog/36313-21perl11:54:083
329950,0watchdog/33528-21iostat_ios12:49:133
329950,0watchdog/326591-21ssh10:09:163
329950,0watchdog/316027-21kthreadcore07:34:113
329950,0watchdog/30-21swapper/312:29:123
29815050,0irq/29-eth0-tx-8643-21python12:49:202
29815050,0irq/29-eth0-tx-8591-21munin-node10:59:052
29815050,0irq/29-eth0-tx-26890-21munin-node09:54:102
29815050,0irq/29-eth0-tx-25208-21gltestperf12:24:072
29815050,0irq/29-eth0-tx-24610-21munin-node09:34:052
29815050,0irq/29-eth0-tx-23870-21munin-node10:49:092
29815050,0irq/29-eth0-tx-20742-21munin-node11:44:152
29815050,0irq/29-eth0-tx-18350-21munin-node09:49:142
29815050,0irq/29-eth0-tx-0-21swapper/211:23:542
29815050,0irq/29-eth0-tx-0-21swapper/211:12:522
29815050,0irq/29-eth0-tx-0-21swapper/211:04:152
29815050,0irq/29-eth0-tx-0-21swapper/210:28:452
29805050,0irq/28-eth0-rx-6259-21ssh10:54:153
29805050,0irq/28-eth0-rx-4971-21rt-features12:09:153
29805050,0irq/28-eth0-rx-29054-21kthreadcore11:09:113
29805050,0irq/28-eth0-rx-24931-21ssh11:07:393
29805050,0irq/28-eth0-rx-23893-21irqcore12:04:123
29805050,0irq/28-eth0-rx-19089-21kthreadcore08:44:113
29805050,0irq/28-eth0-rx-0-21swapper/312:34:083
29805050,0irq/28-eth0-rx-0-21swapper/312:19:083
29805050,0irq/28-eth0-rx-0-21swapper/310:59:193
29805050,0irq/28-eth0-rx-0-21swapper/310:29:073
29805050,0irq/28-eth0-rx-0-21swapper/310:23:553
29805050,0irq/28-eth0-rx-0-21swapper/309:49:063
29805050,0irq/28-eth0-rx-0-21swapper/309:33:063
29805050,0irq/28-eth0-rx-0-21swapper/307:44:053
27150,0ktimersoftd/20-21swapper/212:45:092
259950,0migration/29165-21missed_timers09:59:122
259950,0migration/26606-21missed_timers12:29:152
259950,0migration/25385-21munin-node08:14:082
259950,0migration/25218-21sh10:34:502
259950,0migration/24145-21kthreadcore10:54:112
259950,0migration/228494-21kthreadcore07:44:112
259950,0migration/222452-21cpuspeed_turbos10:29:062
259950,0migration/220358-21switchtime11:59:192
259950,0migration/217240-21hwlatdetect09:29:092
259950,0migration/211942-21irqrtprio11:19:112
249950,0watchdog/20-21swapper/208:09:122
19150,0ktimersoftd/10-21swapper/109:00:471
179950,0migration/1846-21taskset08:30:091
179950,0migration/1622-21rt-features09:14:131
179950,0migration/14544-21kthreadcore09:19:111
179950,0migration/131080-21aten_r1power_fr12:09:051
179950,0migration/127267-21kthreadcore12:04:131
179950,0migration/125320-21sh12:42:211
179950,0migration/123449-21kthreadcore08:24:111
179950,0migration/118091-21taskset12:55:591
179950,0migration/115173-21timerwakeupswit08:39:181
179950,0migration/111530-21kthreadcore10:39:101
179950,0migration/110257-21sh10:00:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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