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2025-12-10 - 20:09
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Wed Dec 10, 2025 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2174099280,27cyclictest0-21swapper/008:55:160
2174099257,15cyclictest0-21swapper/010:46:220
2174099250,1cyclictest0-21swapper/008:20:220
2174299230,18cyclictest0-21swapper/210:06:272
2174199230,5cyclictest0-21swapper/108:02:281
2174199230,20cyclictest0-21swapper/111:45:261
2174099230,5cyclictest0-21swapper/007:32:230
2174299210,20cyclictest823-21systemd-network09:44:532
21740992118,2cyclictest13773-21kernelversion07:50:180
2174099204,15cyclictest0-21swapper/011:16:010
2174099204,15cyclictest0-21swapper/010:20:220
2174299194,1cyclictest0-21swapper/208:37:052
21742991916,2cyclictest922-21rs:main2
2174299190,3cyclictest1591-21systemd07:27:072
2174299190,2cyclictest4534-21H212:26:332
2174299190,16cyclictest4523-21H212:26:332
2174199193,1cyclictest15149-21which08:50:161
21741991917,1cyclictest21-21ksoftirqd/108:34:151
21741991917,1cyclictest0-21swapper/110:43:341
21741991916,2cyclictest32581-21chrt10:18:471
2174199190,16cyclictest4530-21H212:26:331
2174199190,16cyclictest4528-21H212:26:331
2174099192,1cyclictest0-21swapper/011:50:200
21740991917,1cyclictest9-21ksoftirqd/011:30:130
21740991917,1cyclictest0-21swapper/011:42:200
21740991917,1cyclictest0-21swapper/011:23:300
21740991917,1cyclictest0-21swapper/008:53:440
21740991917,1cyclictest0-21swapper/008:16:040
21740991915,1cyclictest0-21swapper/010:10:160
2174099190,3cyclictest0-21swapper/010:05:300
2174099190,18cyclictest0-21swapper/012:25:120
2174099190,18cyclictest0-21swapper/010:55:020
2174099190,16cyclictest4532-21H212:26:330
2174299182,15cyclictest28-21ksoftirqd/212:04:002
2174299182,15cyclictest24763-21missed_timers11:00:172
2174299182,15cyclictest23967-21chrt10:00:312
2174299182,15cyclictest23967-21chrt10:00:302
21742991816,1cyclictest0-21swapper/207:32:172
21742991815,2cyclictest29441-21apache_accesses08:20:122
21742991814,3cyclictest4526-21H212:26:332
21742991814,3cyclictest0-21swapper/208:55:172
2174299181,2cyclictest32438-21chrt10:16:572
2174299181,1cyclictest4523-21H212:26:332
2174299181,16cyclictest7878-21basename11:30:002
21742991810,7cyclictest893-21systemd-logind07:22:072
2174299180,17cyclictest4530-21H212:26:332
2174299180,15cyclictest4536-21H212:26:332
2174199182,2cyclictest4530-21H212:26:331
21741991816,1cyclictest0-21swapper/108:20:171
21741991815,2cyclictest4530-21H212:26:331
21741991814,3cyclictest4532-21H212:26:331
2174199181,1cyclictest20543-21grep09:00:171
2174199181,16cyclictest25976-21nfsd410:05:201
2174199180,2cyclictest4536-21H212:26:331
2174199180,17cyclictest30008-21snapd10:53:191
2174199180,16cyclictest4523-21H212:26:331
2174199180,15cyclictest4593-21H212:26:331
2174099182,15cyclictest9-21ksoftirqd/008:44:210
2174099182,15cyclictest0-21swapper/009:23:560
2174099182,15cyclictest0-21swapper/009:10:580
21740991816,1cyclictest0-21swapper/010:50:310
21740991815,2cyclictest7712-21chrt11:28:310
21740991815,2cyclictest13456-21seq11:36:070
2174099181,2cyclictest15483-21nfsd412:35:180
2174099181,1cyclictest0-21swapper/009:55:200
2174099180,2cyclictest0-21swapper/008:00:150
2174099180,17cyclictest0-21swapper/009:30:190
2174099180,16cyclictest4530-21H212:26:330
2174299172,1cyclictest0-21swapper/207:10:232
21742991715,1cyclictest0-21swapper/211:48:062
21742991715,1cyclictest0-21swapper/208:40:202
21742991714,2cyclictest7616-21/usr/sbin/munin09:35:132
21742991714,2cyclictest4528-21H212:26:332
21742991714,2cyclictest4528-21H212:26:332
21742991714,2cyclictest4523-21H212:26:332
21742991714,2cyclictest3211-21cat08:30:142
21742991714,2cyclictest32005-21sendmail-mta11:15:032
21742991714,2cyclictest27906-21nfsd408:15:222
21742991714,2cyclictest27835-21tr10:10:152
21742991714,2cyclictest19573-21expr09:55:152
21742991714,2cyclictest1555-21lxd12:12:492
21742991714,2cyclictest14846-21grep11:40:132
21742991714,2cyclictest11798-21expr11:35:132
21742991714,1cyclictest7466-21nvmesmart_nvme012:20:192
21742991713,3cyclictest22427-21nfsd408:05:182
21742991713,1cyclictest0-21swapper/208:50:182
2174299170,2cyclictest4532-21H212:26:332
2174299170,2cyclictest30224-21pzem_voltage09:15:232
2174299170,2cyclictest30001-21snapd09:06:292
2174299170,2cyclictest28199-21taskset11:05:212
2174299170,2cyclictest2800-21expr11:20:142
2174299170,2cyclictest25373-21nvmesmart_nvme008:10:202
2174299170,2cyclictest13088-21ntp_kernel_pll_08:45:212
2174299170,2cyclictest13049-21pzem_voltage12:30:212
2174299170,1cyclictest4532-21H212:26:332
2174299170,16cyclictest9705-21munin-run07:45:002
2174299170,16cyclictest5375-21cron12:17:002
2174299170,16cyclictest4536-21H212:26:332
2174299170,16cyclictest4526-21H212:26:332
2174299170,16cyclictest30471-21tail11:10:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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