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2026-06-17 - 22:49
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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 Wed Jun 17, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11095992613,8cyclictest32275-21idleruntime08:40:161
11094992522,2cyclictest1021-21mii-tool12:30:130
1109699243,6cyclictest0-21swapper/211:04:222
11096992414,5cyclictest0-21swapper/208:15:132
1109699240,6cyclictest0-21swapper/210:55:492
1109699240,22cyclictest843-21systemd-network09:01:142
1109699232,1cyclictest0-21swapper/208:54:282
1109699231,1cyclictest0-21swapper/211:30:132
1109699230,3cyclictest28654-21users10:25:212
1109699230,3cyclictest0-21swapper/208:09:222
1109699230,2cyclictest6775-21apt-config09:50:002
1109699230,2cyclictest32665-21gpgv09:40:022
1109699230,2cyclictest1356-21cat07:50:022
11095992316,6cyclictest3979-21H222:10:211
11096992214,7cyclictest25159-21cut10:20:182
11096992214,6cyclictest3983-21H222:10:212
1109699220,2cyclictest31946-21sendmail-mta12:27:142
1109699220,2cyclictest30943-21munin-run07:45:012
1109699220,2cyclictest3031-21cut12:35:012
1109699220,2cyclictest27143-21apache_processe12:20:112
1109699220,2cyclictest2710-21ls10:40:002
1109699220,2cyclictest25817-21latency_hist11:20:012
1109699220,2cyclictest22138-21sort10:15:162
1109699220,2cyclictest22138-21sort10:15:162
1109699220,2cyclictest20634-21sed08:20:182
1109699220,2cyclictest18925-21cut12:05:122
1109699220,2cyclictest1653-21find07:50:012
1109699220,2cyclictest10504-21latency_hist11:50:012
1109699220,1cyclictest0-21swapper/210:30:182
1109699220,17cyclictest4684-21latency_hist08:50:002
1109699220,16cyclictest4017-21perl12:35:142
1109699220,16cyclictest11308-21idleruntime11:50:152
1109599222,15cyclictest21645-21chrt08:20:541
11095992214,7cyclictest32630-21cat10:35:151
11095992214,7cyclictest14425-21netstat09:05:171
1109599221,1cyclictest0-21swapper/112:35:171
1109599220,3cyclictest8162-21expr11:45:131
1109599220,2cyclictest25658-21cut12:15:171
1109599220,2cyclictest16027-21ls10:05:131
1109599220,21cyclictest29999-21expr10:30:131
1109599220,21cyclictest13422-21python308:10:001
1109599220,21cyclictest0-21swapper/112:00:131
1109599220,21cyclictest0-21swapper/112:00:121
1109599220,20cyclictest3987-21H222:10:211
1109599220,1cyclictest0-21swapper/110:50:171
1109599220,1cyclictest0-21swapper/109:40:131
1109599220,16cyclictest4921-21fschecks_time09:45:141
1109599220,16cyclictest31109-21perf08:40:011
1109599220,16cyclictest31002-21cut07:45:011
11096992114,6cyclictest7366-21pzem_power10:45:202
11096992114,6cyclictest0-21swapper/208:40:172
1109699211,1cyclictest0-21swapper/208:25:152
1109699210,2cyclictest9962-21chrt08:59:072
1109699210,2cyclictest3987-21H222:10:212
1109699210,2cyclictest31024-21grep09:35:192
1109699210,2cyclictest23071-21cstates07:30:142
1109699210,2cyclictest20881-21cat11:10:142
1109699210,2cyclictest12493-21grep07:10:152
1109699210,20cyclictest3991-21H222:10:212
1109699210,1cyclictest9407-21expr10:50:132
1109699210,1cyclictest19590-21idleruntime09:15:132
1109699210,1cyclictest0-21swapper/212:14:482
1109699210,1cyclictest0-21swapper/212:05:002
1109699210,1cyclictest0-21swapper/212:05:002
1109699210,1cyclictest0-21swapper/211:40:512
1109699210,1cyclictest0-21swapper/210:10:122
1109699210,1cyclictest0-21swapper/208:04:412
1109699210,16cyclictest26011-21apt11:20:102
1109699210,16cyclictest18310-21cut10:10:002
1109699210,16cyclictest0-21swapper/209:29:162
1109699210,16cyclictest0-21swapper/209:29:152
1109699210,15cyclictest17608-21cpu11:05:132
1109699210,15cyclictest15969-21latency_hist12:00:002
1109599212,1cyclictest11980-21timerwakeupswit09:55:211
11095992119,1cyclictest21-21ksoftirqd/109:52:011
11095992114,6cyclictest7581-21sed11:45:001
11095992114,6cyclictest4099-21H222:10:211
11095992113,7cyclictest3985-21H222:10:211
11095992113,7cyclictest3985-21H222:10:211
1109599211,19cyclictest0-21swapper/111:38:571
1109599210,2cyclictest5898-21expr07:55:131
1109599210,2cyclictest28488-21cut08:35:011
1109599210,20cyclictest4099-21H222:10:211
1109599210,20cyclictest3989-21H222:10:211
1109599210,20cyclictest27441-21expr09:30:171
1109599210,20cyclictest25158-21grep10:20:181
1109599210,20cyclictest23237-21apache_processe11:15:101
1109599210,20cyclictest21857-21timerwakeupswit07:25:221
1109599210,20cyclictest13682-21/usr/sbin/munin10:00:151
1109599210,20cyclictest0-21swapper/109:19:131
1109599210,1cyclictest10889-21apt-get07:10:011
1109599210,1cyclictest0-21swapper/108:45:231
1109599210,16cyclictest17262-21needreboot09:10:171
1109599210,16cyclictest1367-21apt-config07:50:011
1109599210,15cyclictest29071-21awk12:20:211
1109599210,15cyclictest0-21swapper/112:10:011
1109599210,15cyclictest0-21swapper/111:10:141
1109599210,15cyclictest0-21swapper/110:40:181
1109699200,2cyclictest5415-21munin-run10:45:002
1109699200,2cyclictest4035-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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