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2026-05-08 - 10:26
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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 rack1slot8.osadl.org (updated Fri May 08, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1638899911844,48cyclictest0-21swapper/119:10:101
1638799800730,53cyclictest0-21swapper/019:10:100
159372724700,16sleep10-21swapper/119:05:521
1638899529462,35cyclictest0-21swapper/119:40:021
1638799422351,60cyclictest0-21swapper/019:40:010
163879910030,64cyclictest0-21swapper/023:16:000
16387999433,55cyclictest0-21swapper/023:58:590
228699910,4rtkit-daemon2285-21rtkit-daemon21:45:331
16387998714,64cyclictest0-21swapper/021:39:590
228699840,4rtkit-daemon2285-21rtkit-daemon22:53:180
228699840,4rtkit-daemon2285-21rtkit-daemon22:25:131
228699830,5rtkit-daemon2285-21rtkit-daemon00:01:501
228699830,4rtkit-daemon2285-21rtkit-daemon22:12:081
16387998336,35cyclictest0-21swapper/021:34:000
228699810,4rtkit-daemon2285-21rtkit-daemon21:01:211
228699810,4rtkit-daemon2285-21rtkit-daemon00:15:151
228699800,5rtkit-daemon2285-21rtkit-daemon21:24:511
228699800,4rtkit-daemon2285-21rtkit-daemon20:46:071
228699800,4rtkit-daemon2285-21rtkit-daemon20:30:361
228699790,4rtkit-daemon2285-21rtkit-daemon21:27:120
228699790,4rtkit-daemon2285-21rtkit-daemon20:15:261
228699780,4rtkit-daemon2285-21rtkit-daemon23:14:241
1549827832,32sleep00-21swapper/019:05:220
228699770,5rtkit-daemon2285-21rtkit-daemon22:55:191
1638799767,62cyclictest0-21swapper/000:20:470
1638799762,53cyclictest29758-21missed_timers19:45:200
228699750,4rtkit-daemon2285-21rtkit-daemon23:29:350
228699750,4rtkit-daemon2285-21rtkit-daemon22:18:231
228699750,4rtkit-daemon2285-21rtkit-daemon21:29:081
228699740,4rtkit-daemon2285-21rtkit-daemon21:13:411
228699740,4rtkit-daemon2285-21rtkit-daemon20:14:151
16387997417,41cyclictest88850irq/46-eth0-tx-23:48:570
228699730,4rtkit-daemon2285-21rtkit-daemon21:50:521
1638799732,63cyclictest1404-21munin-node00:15:170
228699720,4rtkit-daemon2285-21rtkit-daemon23:19:101
228699720,4rtkit-daemon2285-21rtkit-daemon23:08:450
228699720,4rtkit-daemon2285-21rtkit-daemon22:09:191
228699720,4rtkit-daemon2285-21rtkit-daemon21:07:321
16388997218,34cyclictest0-21swapper/119:57:001
16387997243,22cyclictest0-21swapper/020:40:180
1638799722,64cyclictest9380-21latency23:30:200
228699710,4rtkit-daemon2285-21rtkit-daemon23:41:590
228699710,4rtkit-daemon2285-21rtkit-daemon20:53:561
228699710,4rtkit-daemon2285-21rtkit-daemon19:30:551
228699710,3rtkit-daemon2285-21rtkit-daemon22:03:020
16388997160,6cyclictest32400-21ssh21:18:001
1638799713,54cyclictest8583-21ssh00:26:370
16387997120,34cyclictest0-21swapper/019:34:000
228699700,4rtkit-daemon2285-21rtkit-daemon22:19:290
228699700,4rtkit-daemon2285-21rtkit-daemon21:40:270
228699700,4rtkit-daemon2285-21rtkit-daemon21:21:010
228699700,4rtkit-daemon2285-21rtkit-daemon20:28:371
228699700,4rtkit-daemon2285-21rtkit-daemon20:05:250
228699700,4rtkit-daemon2285-21rtkit-daemon00:10:250
16388997020,35cyclictest0-21swapper/100:08:581
16388997015,39cyclictest0-21swapper/122:22:591
16388997015,38cyclictest0-21swapper/123:42:581
16388997015,38cyclictest0-21swapper/120:23:591
1638799703,39cyclictest18007-21ssh21:50:120
228699690,4rtkit-daemon2285-21rtkit-daemon22:20:230
228699690,4rtkit-daemon2285-21rtkit-daemon20:35:010
228699690,4rtkit-daemon2285-21rtkit-daemon19:50:250
228699690,3rtkit-daemon2285-21rtkit-daemon20:58:121
16388996931,23cyclictest0-21swapper/122:31:581
1638799695,58cyclictest0-21swapper/022:45:320
16387996945,17cyclictest0-21swapper/023:10:200
1638799694,50cyclictest0-21swapper/019:21:050
1638799693,59cyclictest304662chrt21:15:110
1638799693,58cyclictest29586-21ssh00:05:590
16387996923,31cyclictest8250irq/14-pata_sch21:50:010
1638799692,60cyclictest28865-21latency_hist22:10:010
1638799692,59cyclictest15943-21unixbench-2d20:35:240
1638799692,45cyclictest13075-21ssh22:39:450
16387996918,35cyclictest0-21swapper/022:57:530
16387996915,39cyclictest0-21swapper/019:57:000
228699680,4rtkit-daemon2285-21rtkit-daemon23:55:101
228699680,4rtkit-daemon2285-21rtkit-daemon22:02:321
228699680,4rtkit-daemon2285-21rtkit-daemon20:30:010
228699680,4rtkit-daemon2285-21rtkit-daemon19:47:411
228699680,3rtkit-daemon2285-21rtkit-daemon20:41:061
228699680,3rtkit-daemon2285-21rtkit-daemon19:26:161
16388996816,32cyclictest0-21swapper/120:02:591
1638799682,59cyclictest25578-21grep23:00:260
16387996819,42cyclictest88850irq/46-eth0-tx-00:36:070
228699670,4rtkit-daemon2285-21rtkit-daemon23:26:491
228699670,3rtkit-daemon2285-21rtkit-daemon20:09:211
16388996718,31cyclictest0-21swapper/121:42:591
16388996714,33cyclictest0-21swapper/123:20:591
16387996744,15cyclictest0-21swapper/022:30:200
1638799672,60cyclictest273481munin-node19:40:260
16387996719,34cyclictest0-21swapper/020:14:000
16387996716,38cyclictest0-21swapper/020:19:590
228699660,3rtkit-daemon2285-21rtkit-daemon23:31:391
16388996614,40cyclictest0-21swapper/119:42:591
16387996644,15cyclictest0-21swapper/020:05:000
1638799663,39cyclictest27343-21ssh00:02:470
1638799663,39cyclictest22431-21ssh23:54:590
1638799663,35cyclictest30178-21idleruntime-cro21:15:000
1638799663,34cyclictest11142-21idleruntime-cro20:25:000
1638799662,57cyclictest12408-21latency_hist00:35:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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