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2026-04-05 - 10:41
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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 Sun Apr 05, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2411799310,31cyclictest0-21swapper/119:10:151
24116992625,0cyclictest0-21swapper/020:55:170
2411799230,22cyclictest0-21swapper/100:00:561
2411799230,20cyclictest0-21swapper/121:06:051
24117992213,8cyclictest0-21swapper/100:14:501
2411699220,6cyclictest0-21swapper/000:32:190
2411699220,4cyclictest0-21swapper/019:19:360
2411799203,11cyclictest0-21swapper/121:45:511
2411799202,17cyclictest0-21swapper/121:14:061
2411799202,15cyclictest0-21swapper/122:01:391
24117992016,3cyclictest0-21swapper/121:36:561
2411799200,17cyclictest28404-21python322:10:011
2411699202,17cyclictest0-21swapper/022:21:080
24116992014,3cyclictest0-21swapper/023:55:190
2411899192,16cyclictest25889-21chrt23:56:372
24118991915,3cyclictest0-21swapper/220:51:242
24118991915,2cyclictest16273-21nvmesmart_nvme019:50:192
2411899191,17cyclictest6205-21cpuspeed_turbos21:30:152
2411899190,18cyclictest0-21swapper/219:38:122
2411799192,16cyclictest13133-21cat19:45:161
24117991917,1cyclictest28154-21cat19:15:171
24117991917,1cyclictest0-21swapper/121:40:131
24117991917,1cyclictest0-21swapper/120:35:171
24117991917,1cyclictest0-21swapper/119:58:531
24117991916,2cyclictest14374-21tune2fs22:40:141
24117991915,3cyclictest0-21swapper/120:20:151
24117991915,3cyclictest0-21swapper/100:31:481
24117991914,1cyclictest0-21swapper/120:04:131
2411799190,18cyclictest0-21swapper/122:55:011
2411799190,18cyclictest0-21swapper/119:25:171
2411699193,2cyclictest15072-21cron23:39:010
2411699193,2cyclictest15072-21cron23:39:010
2411699193,1cyclictest5943-21date19:35:000
2411699192,2cyclictest31582-21switchtime19:20:200
2411699192,1cyclictest0-21swapper/020:13:180
2411699190,5cyclictest0-21swapper/021:07:240
2411899182,15cyclictest855-21smartctl22:15:192
2411899182,15cyclictest0-21swapper/220:45:212
2411899181,3cyclictest0-21swapper/222:20:542
2411899180,17cyclictest17768-21cut21:50:132
2411899180,16cyclictest2007-21systemd-journal21:11:532
2411799182,15cyclictest6081-21acpi19:35:111
2411799182,15cyclictest2883-21cpuspeed_turbos00:15:131
2411799182,15cyclictest19733-21latency20:55:171
2411799182,15cyclictest0-21swapper/121:15:221
24117991816,1cyclictest0-21swapper/122:23:011
24117991815,2cyclictest9129-21dpkg19:40:011
24117991815,2cyclictest31570-21runlevel00:08:211
24117991814,3cyclictest0-21swapper/121:55:011
24117991814,3cyclictest0-21swapper/120:30:221
2411799181,16cyclictest30339-21python323:10:011
2411799181,16cyclictest24665-21awk23:00:011
2411699182,1cyclictest231582chrt23:51:370
2411699182,1cyclictest0-21swapper/021:50:010
24116991814,3cyclictest0-21swapper/020:25:220
2411699181,16cyclictest23503-21nfsd422:55:170
2411699181,16cyclictest2069-21systemd-udevd23:06:520
2411699180,2cyclictest3983-21H222:10:210
24118991715,1cyclictest0-21swapper/223:08:192
24118991715,1cyclictest0-21swapper/222:30:172
24118991715,1cyclictest0-21swapper/219:17:222
24118991714,2cyclictest3720-21cstates19:30:152
24118991714,2cyclictest32309-21acpi00:10:112
24118991714,2cyclictest25131-21hddtemp_smartct19:10:142
24118991714,2cyclictest1516-21lxd23:42:332
24118991714,2cyclictest1348-21lxd22:06:492
24118991714,2cyclictest10787-21ntpq19:40:182
2411899170,2cyclictest8068-21expr20:35:142
2411899170,2cyclictest6885-21missed_timers00:20:192
2411899170,2cyclictest5145-21cron00:17:002
2411899170,2cyclictest31431-21/usr/sbin/munin20:20:152
2411899170,2cyclictest23087-21taskset20:05:152
2411899170,2cyclictest23087-21taskset20:05:152
2411899170,2cyclictest22893-21nvmesmart_nvme021:00:212
2411899170,2cyclictest14957-21latency00:35:152
2411899170,16cyclictest7924-21grep23:25:142
2411899170,16cyclictest31377-21processes19:20:182
2411899170,16cyclictest29297-21chrt00:05:022
2411899170,16cyclictest2643-21idleruntime20:25:172
2411899170,16cyclictest24565-21ps22:00:202
2411899170,16cyclictest2367-21if_lxdbr023:15:152
2411899170,16cyclictest22276-21acpi22:55:092
2411899170,16cyclictest1851-21pzem_energy19:25:192
2411899170,16cyclictest15471-21/usr/sbin/munin21:45:162
2411899170,16cyclictest1526-21lxd23:46:342
2411899170,16cyclictest13323-21chrt00:31:452
2411899170,16cyclictest12153-21awk22:35:182
2411899170,16cyclictest12108-21sshd23:32:182
2411899170,16cyclictest10087-21pzem_power00:25:202
24117991715,1cyclictest31909-21cpuspeed_turbos22:15:131
24117991715,1cyclictest0-21swapper/122:25:131
24117991714,2cyclictest9887-21sed23:30:001
24117991714,2cyclictest8711-21/usr/sbin/munin22:30:131
24117991714,2cyclictest6317-21cstates21:30:161
24117991714,2cyclictest30516-21cut19:20:141
24117991714,2cyclictest28961-21ls20:15:131
24117991714,2cyclictest2812-21expr23:15:171
24117991714,2cyclictest27012-21missed_timers20:10:171
24117991714,2cyclictest22370-21mii-tool21:00:171
24117991714,2cyclictest2130-21seq20:25:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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