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2026-08-11 - 21:56
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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 Tue Aug 11, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1631899272,24cyclictest21-21ksoftirqd/111:45:161
16318992617,0cyclictest0-21swapper/107:10:091
16324992523,1cyclictest28-21ksoftirqd/207:15:142
16324992416,7cyclictest28-21ksoftirqd/208:00:482
1631499230,5cyclictest0-21swapper/011:25:090
1632499222,19cyclictest28-21ksoftirqd/207:59:522
1631499210,18cyclictest18039-21fschecks_time09:05:150
16324992016,1cyclictest0-21swapper/211:03:572
16318992018,1cyclictest21-21ksoftirqd/107:19:301
1631499204,15cyclictest0-21swapper/010:53:460
16324991919,0cyclictest0-21swapper/211:13:092
16324991917,1cyclictest24326-21sessionclean12:09:002
1632499190,1cyclictest0-21swapper/210:40:422
1632499190,18cyclictest15968-21ntp_kernel_pll_10:55:202
16318991914,4cyclictest426-21systemd-udevd08:46:521
1631499190,2cyclictest5194-21cat11:35:010
1631499190,18cyclictest0-21swapper/012:07:300
1631499190,16cyclictest0-21swapper/010:05:160
1632499182,15cyclictest3985-21H222:10:212
1632499182,15cyclictest28-21ksoftirqd/212:15:112
1632499182,15cyclictest28-21ksoftirqd/212:15:112
1632499182,15cyclictest28-21ksoftirqd/211:40:162
16324991815,2cyclictest271rcuc/210:45:162
16324991815,2cyclictest17163-21fschecks_count11:55:172
16324991810,7cyclictest843-21systemd-network09:19:052
1632499180,17cyclictest399-20systemd-journal07:13:352
1631899183,1cyclictest0-21swapper/110:50:021
1631899182,15cyclictest0-21swapper/109:29:051
16318991816,1cyclictest0-21swapper/109:40:121
16318991816,1cyclictest0-21swapper/109:40:121
16318991816,1cyclictest0-21swapper/107:55:101
16314991816,1cyclictest0-21swapper/011:45:190
16314991816,1cyclictest0-21swapper/008:40:140
16314991815,2cyclictest4035-21H222:10:210
16314991815,2cyclictest23941-21timerwakeupswit07:20:220
16314991815,2cyclictest14609-21dpkg10:55:130
16314991814,2cyclictest0-21swapper/011:50:180
16314991814,2cyclictest0-21swapper/011:50:180
1631499180,2cyclictest3991-21H222:10:210
1632499172,1cyclictest28-21ksoftirqd/209:40:162
1632499172,1cyclictest28-21ksoftirqd/209:40:162
16324991715,1cyclictest0-21swapper/210:28:222
16324991715,1cyclictest0-21swapper/208:50:202
16324991715,1cyclictest0-21swapper/208:45:132
16324991714,2cyclictest9408-21lxd09:02:452
16324991714,2cyclictest6242-21pluginstate10:40:012
16324991714,2cyclictest4099-21H222:10:212
16324991714,2cyclictest3860-21sensors11:30:212
16324991714,2cyclictest28920-21apt-get09:25:122
16324991714,2cyclictest28225-21wc08:25:242
16324991714,2cyclictest20952-21which09:10:162
16324991714,2cyclictest14153-21cron10:55:002
16324991713,3cyclictest1348-21lxd07:44:452
1632499171,15cyclictest28-21ksoftirqd/211:45:202
1632499171,15cyclictest23368-21pzem_voltage10:10:192
1632499171,15cyclictest19270-21cat08:10:182
1632499171,15cyclictest118672sleep208:55:142
1632499171,15cyclictest0-21swapper/211:20:012
1632499170,2cyclictest8486-21expr09:45:152
1632499170,2cyclictest3978-21H222:10:212
1632499170,2cyclictest2858-21rs:main2
1632499170,2cyclictest20820-21idleruntime11:05:162
1632499170,2cyclictest11439-21chrt09:50:162
1632499170,16cyclictest776-21taskset12:20:502
1632499170,16cyclictest5351-21fschecks_time12:30:162
1632499170,16cyclictest455-21plymouthd11:15:162
1632499170,16cyclictest27183-21sed12:10:232
1632499170,16cyclictest25515-21expr07:25:142
1632499170,16cyclictest24503-21python307:25:002
1632499170,16cyclictest1348-21lxd12:02:452
1632499170,16cyclictest10245-21cat12:40:002
1632499170,16cyclictest0-21swapper/208:20:082
1631899172,15cyclictest0-21swapper/111:30:121
16318991715,1cyclictest65922chrt07:49:291
16318991714,2cyclictest8688-21nfsd412:35:171
16318991714,2cyclictest4099-21H222:10:211
16318991714,2cyclictest3147-21cpuspeed_turbos08:40:131
16318991714,2cyclictest22967-21apt-get09:15:121
16318991714,2cyclictest22607-21sh12:05:171
16318991714,2cyclictest2123-21cat12:25:141
16318991714,2cyclictest1829-21systemd-journal12:17:001
16318991714,2cyclictest1829-21systemd-journal12:17:001
16318991714,2cyclictest1829-21systemd-journal11:15:001
16318991714,2cyclictest17689-21cstates11:00:161
16318991714,2cyclictest1661-21nfsd410:30:181
16318991714,2cyclictest15279-21apache_processe08:05:121
16318991714,2cyclictest1280-21munin-run12:25:001
16318991714,2cyclictest1002-21cat11:25:231
16318991714,1cyclictest0-21swapper/110:47:061
1631899170,2cyclictest16899-21sshd09:04:421
1631899170,2cyclictest14374-21ls08:00:221
1631899170,2cyclictest14191-21perf09:00:011
1631899170,1cyclictest2038-21chrt08:38:071
1631899170,16cyclictest3991-21H222:10:211
1631899170,16cyclictest3981-21H222:10:211
1631899170,16cyclictest32228-21pzem_voltage07:35:211
1631899170,16cyclictest28879-21run-parts10:20:201
1631899170,16cyclictest2872-21systemd-logind10:40:521
1631899170,16cyclictest25134-21dpkg12:10:001
1631899170,16cyclictest2056-21apache_accesses09:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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