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2026-04-17 - 02:06
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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 rack5slot2.osadl.org (updated Fri Apr 17, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
127022208177,26sleep10-21swapper/119:09:401
124742191173,13sleep00-21swapper/019:06:420
124352188171,12sleep30-21swapper/319:06:133
105012170154,12sleep20-21swapper/219:05:042
42292520,0sleep10-21swapper/122:10:191
96332390,0sleep20-21swapper/200:20:152
27374290,0sleep10-21swapper/100:29:221
21935290,0sleep10-21swapper/100:10:171
128989992,3cyclictest21149-21perf20:30:000
7714280,0sleep20-21swapper/200:19:462
128989982,3cyclictest28572-21awk20:45:000
128989982,3cyclictest25943-21munin-run21:50:010
128989982,3cyclictest20975-21awk22:35:010
128989980,4cyclictest1085-21awk20:55:000
128989972,5cyclictest27296-21kworker/0:222:00:010
128989972,5cyclictest18666-21munin-run20:25:000
128989971,6cyclictest27296-21kworker/0:221:21:340
128989971,3cyclictest18273-21perf00:25:000
128989971,3cyclictest10124-21munin-run00:05:000
129059960,1cyclictest23667-21latency_hist20:35:002
128989962,4cyclictest27296-21kworker/0:221:17:260
128989962,4cyclictest10547-21kworker/0:023:41:070
128989962,4cyclictest10547-21kworker/0:023:10:530
128989961,5cyclictest27296-21kworker/0:222:15:170
128989960,3cyclictest23604-21munin-run20:35:000
3542250,1sleep23545-21needreboot23:45:162
20304250,0sleep10-21swapper/121:30:351
129109955,0cyclictest5344-21kworker/3:221:14:103
129109955,0cyclictest40-21ksoftirqd/323:00:113
129109955,0cyclictest40-21ksoftirqd/321:15:123
129109955,0cyclictest40-21ksoftirqd/321:00:143
129109955,0cyclictest40-21ksoftirqd/320:10:083
129109955,0cyclictest25716-21kworker/3:022:32:323
129109955,0cyclictest25716-21kworker/3:022:21:203
129109955,0cyclictest25716-21kworker/3:022:10:093
129109955,0cyclictest25716-21kworker/3:000:35:403
129109954,1cyclictest40-21ksoftirqd/300:15:003
129109954,1cyclictest25716-21kworker/3:023:39:433
129109952,3cyclictest29968-21awk00:30:163
129109951,3cyclictest0-21swapper/321:35:343
129109950,5cyclictest5005-21perl21:55:143
129109950,5cyclictest26458-21apt-get21:50:123
129109950,5cyclictest0-21swapper/300:25:153
129109950,1cyclictest27419-21ntp_states19:35:173
129059955,0cyclictest0-21swapper/200:37:432
129059952,3cyclictest18646-21ssh23:20:332
129059950,5cyclictest0-21swapper/223:43:262
129059950,5cyclictest0-21swapper/221:45:092
129059950,5cyclictest0-21swapper/200:27:392
129059950,5cyclictest0-21swapper/200:03:402
129059950,0cyclictest0-21swapper/221:11:242
129039952,2cyclictest0-21swapper/122:15:121
129039951,3cyclictest0-21swapper/120:00:111
129039951,2cyclictest0-21swapper/122:30:121
129039951,2cyclictest0-21swapper/122:05:121
129039951,2cyclictest0-21swapper/100:35:111
129039950,5cyclictest0-21swapper/123:32:501
129039950,5cyclictest0-21swapper/121:50:591
129039950,5cyclictest0-21swapper/121:29:541
128989951,4cyclictest27296-21kworker/0:222:13:290
128989951,4cyclictest27296-21kworker/0:221:55:560
128989951,4cyclictest27296-21kworker/0:221:35:180
128989951,4cyclictest27296-21kworker/0:221:29:300
128989951,4cyclictest10547-21kworker/0:023:50:210
128989951,4cyclictest10547-21kworker/0:000:27:410
128989951,4cyclictest10547-21kworker/0:000:12:530
128989950,5cyclictest27296-21kworker/0:222:23:170
128989950,5cyclictest10547-21kworker/0:022:58:050
128989950,5cyclictest10547-21kworker/0:000:31:250
128989950,5cyclictest0-21swapper/022:39:530
128989950,5cyclictest0-21swapper/022:07:350
128989950,4cyclictest22777-21ssh23:55:120
128989950,4cyclictest0-21swapper/022:45:110
128989950,0cyclictest0-21swapper/000:37:010
16730240,0sleep10-21swapper/121:13:461
129109944,0cyclictest5344-21kworker/3:221:25:223
129109944,0cyclictest5344-21kworker/3:220:40:353
129109944,0cyclictest5344-21kworker/3:220:29:233
129109944,0cyclictest5344-21kworker/3:220:18:113
129109944,0cyclictest5344-21kworker/3:219:11:013
129109944,0cyclictest40-21ksoftirqd/322:35:123
129109944,0cyclictest40-21ksoftirqd/322:00:013
129109944,0cyclictest40-21ksoftirqd/300:05:113
129109944,0cyclictest25716-21kworker/3:023:28:313
129109944,0cyclictest0-21swapper/323:45:003
129109944,0cyclictest0-21swapper/321:45:423
129109944,0cyclictest0-21swapper/321:32:103
129109943,1cyclictest40-21ksoftirqd/323:15:113
129109943,1cyclictest40-21ksoftirqd/321:20:133
129109943,1cyclictest40-21ksoftirqd/319:15:113
129109942,0cyclictest40-21ksoftirqd/322:45:113
129109940,4cyclictest0-21swapper/323:55:463
129109940,4cyclictest0-21swapper/323:40:123
129109940,4cyclictest0-21swapper/322:40:113
129109940,4cyclictest0-21swapper/321:40:123
129109940,4cyclictest0-21swapper/300:20:113
129109940,3cyclictest30437-21diskstats22:55:133
129109940,3cyclictest29324-21/usr/sbin/munin23:10:153
129109940,3cyclictest23729-21aten2_r5power_e19:30:123
129109940,3cyclictest20263-21sh23:05:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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