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2026-07-02 - 07:14
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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 Thu Jul 02, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4439992523,0cyclictest0-21swapper/122:05:101
4441992417,6cyclictest29384-21sh00:39:002
4441992316,6cyclictest7769-21chrt21:09:332
444199231,3cyclictest1100-21snmpd23:25:152
444199230,3cyclictest0-21swapper/219:57:532
444199230,22cyclictest17800-21ntp_states23:20:202
444199230,16cyclictest28301-21apache_processe20:50:112
444199222,19cyclictest21689-21cpuspeed_turbos00:25:142
4441992217,4cyclictest27003-21fschecks_time22:40:142
4441992216,5cyclictest22403-21cpuspeed_turbos21:35:142
4441992214,7cyclictest16128-21python321:25:012
444199220,2cyclictest399-20systemd-journal00:03:292
444199220,21cyclictest0-21swapper/222:45:132
444199220,21cyclictest0-21swapper/221:46:532
444199220,21cyclictest0-21swapper/200:25:012
444199220,1cyclictest0-21swapper/223:40:192
444199220,16cyclictest2696-21cat23:50:152
444199220,16cyclictest2292-21nfsd421:55:182
444199220,16cyclictest22861-21apache_volume20:40:132
444199220,16cyclictest15088-21latency_hist22:20:022
444199220,16cyclictest10151-21lxd19:40:502
444199220,15cyclictest0-21swapper/221:15:152
444199220,15cyclictest0-21swapper/221:15:142
4441992115,5cyclictest21125-21expr22:30:142
4441992115,5cyclictest21125-21expr22:30:142
4441992114,6cyclictest2662-21cat22:55:132
444199210,2cyclictest8990-21taskset20:15:102
444199210,2cyclictest31237-21expr21:50:142
444199210,2cyclictest10569-21cat22:10:152
444199210,20cyclictest6883-21apache_accesses22:05:102
444199210,20cyclictest11635-21awk00:05:222
444199210,20cyclictest0-21swapper/222:53:572
444199210,20cyclictest0-21swapper/222:35:202
444199210,20cyclictest0-21swapper/222:20:012
444199210,20cyclictest0-21swapper/220:00:202
444199210,1cyclictest156542sleep200:14:352
444199210,1cyclictest156542sleep200:14:342
444199210,1cyclictest0-21swapper/220:25:132
444199210,1cyclictest0-21swapper/220:25:122
444199210,1cyclictest0-21swapper/220:10:212
444199210,1cyclictest0-21swapper/219:30:172
444199210,1cyclictest0-21swapper/200:15:202
444199210,19cyclictest0-21swapper/220:20:122
444199210,16cyclictest8849-21grep21:10:132
444199210,16cyclictest6974-21ls23:00:232
444199210,16cyclictest26055-21grep23:35:162
444199210,15cyclictest32396-21sed23:45:152
444199210,15cyclictest0-21swapper/221:25:192
444199210,15cyclictest0-21swapper/220:10:012
4439992113,4cyclictest0-21swapper/121:54:531
4438992116,3cyclictest989-21gmain00:40:010
4441992014,5cyclictest0-21swapper/219:15:202
4441992014,5cyclictest0-21swapper/219:10:142
4441992013,6cyclictest455-21plymouthd19:25:172
4441992013,6cyclictest28150-21taskset20:50:002
4441992013,6cyclictest0-21swapper/223:15:132
4441992013,6cyclictest0-21swapper/222:25:142
444199200,1cyclictest0-21swapper/223:15:002
444199200,19cyclictest17514-21expr20:30:132
444199200,19cyclictest0-21swapper/221:03:082
444199200,19cyclictest0-21swapper/220:55:152
444199200,19cyclictest0-21swapper/219:40:012
444199200,15cyclictest0-21swapper/200:30:162
444199200,0cyclictest0-21swapper/221:33:012
443999202,3cyclictest863-21avahi-daemon23:05:211
4438992014,3cyclictest0-21swapper/000:15:130
4438992012,4cyclictest0-21swapper/021:44:590
4438992012,4cyclictest0-21swapper/021:44:590
4441991914,4cyclictest4205-21cpuspeed_turbos22:00:112
4441991913,5cyclictest26591-21chrt19:48:032
4441991913,5cyclictest0-21swapper/223:30:132
4441991913,5cyclictest0-21swapper/219:52:042
444199190,1cyclictest0-21swapper/223:05:172
444199190,1cyclictest0-21swapper/220:40:012
444199190,18cyclictest0-21swapper/219:20:172
444199190,15cyclictest0-21swapper/221:42:132
444199190,15cyclictest0-21swapper/221:42:132
444199190,14cyclictest0-21swapper/223:55:142
443999198,10cyclictest26315-21kworker/1:221:55:041
4439991916,2cyclictest29510-21basename19:55:001
443899199,0cyclictest0-21swapper/021:05:150
4438991917,1cyclictest32207-21if_eno123:45:150
4438991917,1cyclictest0-21swapper/020:43:510
4438991917,1cyclictest0-21swapper/000:08:030
443899191,3cyclictest0-21swapper/022:55:140
443999182,15cyclictest0-21swapper/100:25:271
4439991815,2cyclictest25654-21nfsd419:45:191
4439991813,4cyclictest870-21systemd-logind00:38:511
443999181,16cyclictest27746-21smartctl22:40:181
443999181,16cyclictest14516-21needreboot19:25:191
443999180,3cyclictest25743-21sed22:39:011
443999180,2cyclictest4094-21fschecks_time20:05:141
443999180,17cyclictest399-20systemd-journal22:50:001
443899182,1cyclictest0-21swapper/021:36:430
443899182,15cyclictest7986-21missed_timers22:05:170
4438991816,1cyclictest0-21swapper/023:00:230
4438991815,2cyclictest20151-21cat21:30:140
4438991815,2cyclictest18526-21expr22:25:150
443899180,3cyclictest20669-21wc23:25:200
443899180,16cyclictest20075-21nfsd419:35:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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