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2026-07-25 - 22:07
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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 Sat Jul 25, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14839992826,1cyclictest28-21ksoftirqd/212:27:572
1483899280,27cyclictest0-21swapper/112:30:141
1483799284,19cyclictest0-21swapper/012:05:000
1483799273,18cyclictest0-21swapper/009:45:000
14839992118,2cyclictest28630-21apt-key12:20:002
1483999210,20cyclictest0-21swapper/209:45:132
1483999210,18cyclictest0-21swapper/208:15:182
1483899213,13cyclictest23043-21/usr/sbin/munin07:25:011
1483899212,3cyclictest0-21swapper/109:50:321
14838992112,0cyclictest0-21swapper/111:56:221
1483999204,15cyclictest0-21swapper/208:30:002
1483899203,2cyclictest15159-21cat08:05:201
14838992018,1cyclictest0-21swapper/111:40:001
1483899201,16cyclictest0-21swapper/108:50:281
1483799203,11cyclictest21113-21apt-config09:15:000
1483799203,11cyclictest21113-21apt-config09:15:000
1483799200,3cyclictest2850-21gmain08:45:000
14839991915,3cyclictest0-21swapper/212:11:452
14839991914,3cyclictest509-21latency_hist11:30:002
1483999190,18cyclictest843-21systemd-network12:20:132
1483999190,18cyclictest0-21swapper/211:12:342
1483999190,16cyclictest0-21swapper/209:40:022
1483999190,15cyclictest0-21swapper/209:11:242
1483999190,15cyclictest0-21swapper/209:11:242
14838991919,0cyclictest0-21swapper/109:25:161
14838991915,3cyclictest0-21swapper/111:25:061
1483899190,5cyclictest0-21swapper/111:18:501
1483799194,14cyclictest0-21swapper/008:20:360
14837991912,6cyclictest399-20systemd-journal09:16:340
1483799191,14cyclictest0-21swapper/009:50:520
1483799190,18cyclictest843-21systemd-network07:48:350
1483999182,2cyclictest4808-21sort11:35:192
14839991816,1cyclictest0-21swapper/210:12:192
14839991815,2cyclictest22825-21cpuspeed_turbos08:20:152
14839991815,2cyclictest11732-21fschecks_time10:50:192
1483999181,16cyclictest2549-21grep10:35:152
1483999180,16cyclictest3991-21H222:10:212
1483899182,1cyclictest0-21swapper/107:40:101
1483899182,15cyclictest0-21swapper/109:42:071
14838991816,1cyclictest0-21swapper/109:24:521
14838991814,3cyclictest6921-21awk07:50:181
14838991814,3cyclictest5150-21cron07:50:001
1483899181,15cyclictest3396-21apt-config09:40:011
1483899180,3cyclictest843-21systemd-network10:10:101
1483899180,2cyclictest843-21systemd-network10:38:041
1483899180,17cyclictest21160-21apt-config09:15:001
1483899180,17cyclictest21160-21apt-config09:15:001
1483899180,15cyclictest14758-21cat11:55:001
1483799182,15cyclictest0-21swapper/011:52:370
1483799182,15cyclictest0-21swapper/008:19:320
14837991815,2cyclictest4311-21mailstats12:30:210
1483799180,3cyclictest843-21systemd-network11:34:490
1483799180,3cyclictest32708-21perf11:30:010
1483799180,3cyclictest11346-21wc10:50:170
14839991715,1cyclictest0-21swapper/209:04:032
14839991715,1cyclictest0-21swapper/208:09:092
14839991714,2cyclictest7517-21idleruntime11:40:172
14839991714,2cyclictest32370-21expr07:40:152
14839991714,2cyclictest28028-21chrt07:30:212
14839991714,2cyclictest26004-21/usr/sbin/munin11:15:182
14839991714,2cyclictest24203-21expr10:15:152
14839991714,2cyclictest19830-21trivial-rewrite07:15:442
14839991714,2cyclictest17183-21ntpq09:05:202
14839991714,2cyclictest12215-21grep08:00:172
14839991712,3cyclictest15280-21proc_pri10:55:192
1483999170,2cyclictest9594-21nfsd410:45:192
1483999170,2cyclictest6644-21missed_timers07:50:182
1483999170,2cyclictest3641-21systemctl08:40:222
1483999170,2cyclictest3119-21python309:40:012
1483999170,2cyclictest30228-21latency10:25:182
1483999170,2cyclictest22851-21/usr/sbin/munin09:15:172
1483999170,2cyclictest20818-21pzem_power11:05:192
1483999170,2cyclictest17229-21chrt07:12:112
1483999170,2cyclictest1042-21expr11:30:152
1483999170,1cyclictest0-21swapper/211:20:172
1483999170,1cyclictest0-21swapper/211:20:162
1483999170,16cyclictest7139-21cron08:50:002
1483999170,16cyclictest5824-21cat12:35:162
1483999170,16cyclictest4235-21grep07:45:202
1483999170,16cyclictest31266-21taskset07:36:442
1483999170,16cyclictest29998-21/usr/sbin/munin09:30:212
1483999170,16cyclictest23739-21/usr/sbin/munin07:25:162
1483999170,16cyclictest20380-21munin-plugin-st10:10:002
1483999170,16cyclictest17218-21fschecks_count11:00:152
1483999170,16cyclictest14830-21latency_hist11:55:002
1483999170,16cyclictest12611-21munin-run09:00:012
1483999170,16cyclictest11428-21timerwakeupswit09:50:232
1483999170,16cyclictest0-21swapper/211:46:462
14838991715,1cyclictest0-21swapper/110:46:311
14838991714,2cyclictest7697-21kernelversion11:40:191
14838991714,2cyclictest31018-21sed12:20:231
14838991714,2cyclictest29313-21grep10:25:141
14838991714,2cyclictest23497-21switchtime09:15:211
14838991714,2cyclictest2145-21nfsd411:30:191
14838991714,2cyclictest1779-21/usr/sbin/munin08:40:221
14838991714,2cyclictest1213-21grep10:30:221
14838991713,3cyclictest0-21swapper/108:15:141
1483899170,2cyclictest3053-21systemd-logind11:04:511
1483899170,2cyclictest30322-21missed_timers07:35:181
1483899170,2cyclictest30268-21cstates09:30:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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