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2026-07-11 - 01:52
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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 Sat Jul 11, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
959124738,0sleep10-21swapper/119:24:001
955523625,0sleep00-21swapper/019:23:350
962323424,0sleep20-21swapper/219:24:212
950722824,0sleep30-21swapper/319:23:023
99519985,0cyclictest29239-21irqcore00:37:391
99519973,0cyclictest9436-21awk00:07:371
99519973,0cyclictest3571-21lldpd20:22:351
99519973,0cyclictest1746-21awk21:52:381
99519973,0cyclictest13476-21awk23:32:381
99519973,0cyclictest11614-21awk20:57:371
99519973,0cyclictest11498-21awk20:12:371
99519972,0cyclictest23083-21sadc23:57:221
99529966,0cyclictest0-21swapper/200:17:382
99519962,0cyclictest9478-21stty21:57:321
99519962,0cyclictest3524-21snmpd20:31:461
99519962,0cyclictest32749-21cat21:52:221
99519962,0cyclictest3049-21awk00:22:381
99519962,0cyclictest28481-21cut20:47:321
99519962,0cyclictest27760-21unixbench_singl23:37:481
99519962,0cyclictest23791-21awk22:42:341
99519962,0cyclictest21152-21diskmemload23:18:151
99519962,0cyclictest18441-21awk19:32:371
99519962,0cyclictest17540-21awk22:57:381
99519961,0cyclictest9841-21kthreadcore21:17:401
99519961,0cyclictest32390-21grep00:02:341
99519961,0cyclictest30773-21awk23:42:361
99519961,0cyclictest28956-21kthreadcore23:02:401
99519961,0cyclictest25929-21awk21:07:361
99519961,0cyclictest21350-21kthreadcore21:02:401
99519961,0cyclictest11219-21grep00:27:341
99519960,0cyclictest5546-21aten_r1power_vo22:32:351
99519960,0cyclictest5266-21ssh21:35:221
99519960,0cyclictest5135-21grep00:42:361
99519960,0cyclictest4316-21munin-node20:52:361
99519960,0cyclictest3307-21ssh23:27:071
99519960,0cyclictest25916-21cpuspeed_turbos00:17:341
99519960,0cyclictest2580-21tr23:07:391
99519960,0cyclictest25623-21cut19:57:381
99519960,0cyclictest25256-21kthreadcore20:42:401
99519960,0cyclictest21758-21ssh00:52:281
99519960,0cyclictest20861-21diskstats22:22:361
99519960,0cyclictest20493-21if_eth100:32:381
99519960,0cyclictest17470-21munin-node00:12:351
99519960,0cyclictest14789-21grep19:52:351
99519960,0cyclictest14191-21switchtime22:52:471
99519960,0cyclictest12389-21ssh23:47:441
99519960,0cyclictest11130-21sh19:27:351
99519960,0cyclictest11130-21sh19:27:351
99519960,0cyclictest0-21swapper/122:10:231
99499965,0cyclictest9217-21sed22:52:380
99499960,0cyclictest0-21swapper/022:01:090
339960,0migration/326963-21sh00:35:233
339960,0migration/324564-21aten_r1power_cu19:37:333
29805060,0irq/28-eth0-rx-5275-21perl00:42:363
29805060,0irq/28-eth0-rx-30513-21python21:47:483
29805060,0irq/28-eth0-rx-27844-21sed23:22:353
29805060,0irq/28-eth0-rx-21557-21kthreadcore00:12:403
29805060,0irq/28-eth0-rx-15915-21cut22:37:393
149960,0migration/09301-21sh00:24:190
149960,0migration/08606-21sh23:09:090
149960,0migration/032557-21fschecks_time19:42:360
149960,0migration/030639-21sh22:46:080
149960,0migration/028875-21sh21:30:360
149960,0migration/028637-21sh00:53:060
149960,0migration/012572-21timerwakeupswit23:47:470
99529950,0cyclictest0-21swapper/223:56:582
99529950,0cyclictest0-21swapper/223:37:162
99519950,0cyclictest9788-21latency_hist23:12:221
99519950,0cyclictest6982-21aten_r1power_vo20:32:321
99519950,0cyclictest6563-21cat19:47:221
99519950,0cyclictest6293-21sed21:37:221
99519950,0cyclictest3585-21sort23:27:221
99519950,0cyclictest32125-21cut21:12:321
99519950,0cyclictest31654-21ls19:42:221
99519950,0cyclictest31288-21sed22:47:221
99519950,0cyclictest3001-21date20:07:211
99519950,0cyclictest2935-21sed22:12:221
99519950,0cyclictest28932-21wc22:27:221
99519950,0cyclictest28208-21sed20:02:221
99519950,0cyclictest24531-21cat19:37:221
99519950,0cyclictest23289-21cat23:57:221
99519950,0cyclictest21297-21grep21:27:211
99519950,0cyclictest17990-21cat22:02:221
99519950,0cyclictest17502-21latency_hist20:17:211
99519950,0cyclictest15247-21cut21:42:221
99519950,0cyclictest14123-21cat21:22:211
99519950,0cyclictest13964-21sed20:37:211
99519950,0cyclictest13792-21latency_hist22:37:221
99519950,0cyclictest12992-21cat00:47:231
99519950,0cyclictest11808-21munin-node22:17:321
99499955,0cyclictest16559-21kworker/0:221:21:570
99499955,0cyclictest0-21swapper/021:46:390
99499955,0cyclictest0-21swapper/000:21:470
99499955,0cyclictest0-21swapper/000:12:380
99499955,0cyclictest0-21swapper/000:03:300
99499954,0cyclictest9142-21munin-run21:57:220
99499950,0cyclictest0-21swapper/000:08:040
339950,0migration/38895-21kthreadcore19:47:403
339950,0migration/37149-21taskset22:51:253
339950,0migration/36906-21fschecks_time23:47:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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