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2026-05-25 - 17:06
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Mon May 25, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7063993030,0cyclictest0-21swapper/110:15:151
7067992918,10cyclictest0-21swapper/210:43:082
7063992817,10cyclictest0-21swapper/109:50:161
7058992818,9cyclictest0-21swapper/010:43:090
7067992222,0cyclictest0-21swapper/210:15:142
706799220,17cyclictest0-21swapper/210:20:182
706799212,18cyclictest0-21swapper/212:36:162
706799212,18cyclictest0-21swapper/212:36:152
7063992114,3cyclictest0-21swapper/107:20:191
705899215,12cyclictest0-21swapper/008:28:110
705899202,15cyclictest0-21swapper/008:00:150
706799192,15cyclictest16932-21apache208:25:012
7067991917,1cyclictest0-21swapper/208:44:452
706399193,15cyclictest0-21swapper/112:19:561
706399192,2cyclictest7380-21tr11:55:121
7063991917,1cyclictest0-21swapper/112:10:121
7063991910,0cyclictest22831-21kworker/1:010:43:081
706399190,1cyclictest0-21swapper/109:44:271
7058991917,1cyclictest0-21swapper/008:38:510
7058991917,1cyclictest0-21swapper/007:10:180
705899190,16cyclictest0-21swapper/009:20:160
706799184,9cyclictest23781-21perf09:35:002
706799183,1cyclictest0-21swapper/207:39:422
7067991816,1cyclictest0-21swapper/209:10:142
7067991816,1cyclictest0-21swapper/209:10:142
7067991815,2cyclictest3905-21processes10:50:202
7067991815,2cyclictest2872-21systemd-logind11:54:512
706799181,15cyclictest0-21swapper/207:29:002
7067991810,5cyclictest0-21swapper/212:15:212
706799180,17cyclictest27524-21munin-run11:35:012
706799180,17cyclictest16283-21fschecks_time12:10:132
706799180,17cyclictest0-21swapper/209:00:012
706399183,1cyclictest0-21swapper/108:06:231
706399182,15cyclictest28242-21mailstats07:45:201
7063991816,2cyclictest0-21swapper/108:50:001
7063991816,1cyclictest0-21swapper/110:25:101
706399181,16cyclictest23166-21grep08:35:141
706399181,16cyclictest0-21swapper/108:55:181
706399180,17cyclictest3351-21lxd10:36:421
705899182,15cyclictest24174-21seq11:25:300
705899182,15cyclictest14461-21if_lxdbr011:10:160
7058991816,1cyclictest0-21swapper/010:13:410
7058991816,1cyclictest0-21swapper/007:20:160
705899181,2cyclictest1851-21cat09:50:160
705899181,16cyclictest17757-21smartctl11:15:180
705899181,16cyclictest0-21swapper/011:35:020
705899180,3cyclictest3053-21systemd-logind08:46:520
705899180,3cyclictest1582-21grep11:45:130
705899180,17cyclictest0-21swapper/011:55:160
705899180,16cyclictest14504-21snapd09:10:290
705899180,16cyclictest14504-21snapd09:10:280
705899180,16cyclictest14035-21nfsd412:05:180
706799172,1cyclictest91172chrt10:04:422
7067991715,1cyclictest0-21swapper/211:15:142
7067991715,1cyclictest0-21swapper/208:50:172
7067991714,2cyclictest30507-21timerwakeupswit08:45:222
7067991714,2cyclictest2069-21systemd-udevd11:58:522
7067991714,2cyclictest19615-21slapd07:21:212
7067991714,2cyclictest14499-21snapd10:08:062
7067991714,2cyclictest14496-21snapd08:10:472
7067991714,1cyclictest31363-21http_loadtime09:45:162
7067991714,1cyclictest0-21swapper/212:30:212
7067991713,1cyclictest111rcu_preempt10:10:182
706799171,15cyclictest30178-21taskset09:44:472
706799170,2cyclictest5883-21fschecks_time10:55:132
706799170,2cyclictest2946-21proc_pri11:45:182
706799170,2cyclictest27065-21apt-get09:40:012
706799170,2cyclictest24609-21if_eno112:25:152
706799170,2cyclictest1377-21lxd08:34:422
706799170,2cyclictest10568-21cat11:05:012
706799170,1cyclictest111rcu_preempt10:45:182
706799170,1cyclictest0-21swapper/207:58:162
706799170,16cyclictest870-21systemd-logind07:11:522
706799170,16cyclictest455-21plymouthd11:20:012
706799170,16cyclictest399-20systemd-journal09:29:562
706799170,16cyclictest3053-21systemd-logind07:17:532
706799170,16cyclictest29437-21expr11:35:172
706799170,16cyclictest27292-21fschecks_count07:45:142
706799170,16cyclictest18443-21cpuspeed_turbos07:30:132
706799170,16cyclictest14920-21sed09:15:232
706799170,16cyclictest14778-21needreboot11:10:162
706799170,16cyclictest0-21swapper/212:05:172
706799170,16cyclictest0-21swapper/208:30:022
706399177,1cyclictest0-21swapper/107:50:441
706399177,10cyclictest0-21swapper/111:05:381
7063991716,1cyclictest0-21swapper/108:40:191
7063991715,1cyclictest205242chrt07:33:521
7063991714,2cyclictest8422-21ls11:00:141
7063991714,2cyclictest4099-21H222:10:211
7063991714,2cyclictest3985-21H222:10:211
7063991714,2cyclictest31916-21cpuspeed_turbos10:45:121
7063991714,2cyclictest26228-21awk11:30:161
7063991714,2cyclictest2560-21/usr/sbin/munin08:00:161
7063991714,2cyclictest24681-21grep10:30:181
7063991714,2cyclictest23610-21ntp_states11:25:181
7063991714,2cyclictest19247-21grep10:20:181
7063991714,2cyclictest17641-21smtp07:26:411
7063991714,2cyclictest16094-21munin-plugin-st11:15:001
7063991714,2cyclictest1388-21apache_processe11:45:101
7063991713,3cyclictest5465-21cpuspeed_turbos10:55:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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