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2026-09-12 - 13:54
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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 Sep 12, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28832992412,5cyclictest455-21plymouthd23:05:002
28822992422,1cyclictest9-21ksoftirqd/000:12:460
2883299230,5cyclictest0-21swapper/200:09:002
2883299230,15cyclictest0-21swapper/200:20:562
2882799220,0cyclictest0-21swapper/121:35:171
2882799212,3cyclictest0-21swapper/123:00:171
2882799210,3cyclictest0-21swapper/119:35:561
2882799210,16cyclictest14679-21cron22:35:001
28832992014,1cyclictest0-21swapper/221:40:002
28827992018,1cyclictest0-21swapper/122:38:591
28827992016,3cyclictest0-21swapper/119:56:061
2882299201,15cyclictest0-21swapper/021:05:330
2883299193,15cyclictest0-21swapper/220:24:192
28832991916,1cyclictest0-21swapper/221:53:092
2883299190,18cyclictest0-21swapper/200:16:052
2882799193,1cyclictest15374-21expr20:40:131
28827991914,2cyclictest0-21swapper/119:47:091
2882299192,2cyclictest9141-21seq22:24:500
28822991917,1cyclictest1100-21snmpd23:51:100
2883299186,11cyclictest0-21swapper/200:25:572
28832991815,2cyclictest3976-21H222:10:212
28832991815,2cyclictest30347-21wc20:10:132
28832991815,2cyclictest26417-21cut21:00:142
28832991815,2cyclictest18154-21munin-run00:35:012
28832991815,2cyclictest1155-21switchtime19:15:212
28832991814,3cyclictest16464-21nvmesmart_nvme022:35:192
28832991814,3cyclictest0-21swapper/220:26:272
28832991812,5cyclictest0-21swapper/222:40:182
28832991812,5cyclictest0-21swapper/222:40:182
2883299180,17cyclictest1300-21lxd00:00:362
2883299180,16cyclictest20533-21cpuspeed_turbos20:50:132
2882799187,10cyclictest0-21swapper/120:05:261
2882799182,15cyclictest18216-21fschecks_count20:45:151
2882799182,15cyclictest0-21swapper/122:19:511
28827991816,1cyclictest0-21swapper/100:05:121
28827991814,3cyclictest13381-21smtp23:28:471
2882799181,3cyclictest0-21swapper/120:34:351
2882799181,3cyclictest0-21swapper/120:34:351
2882799181,16cyclictest20535-21latency23:40:171
2882799180,2cyclictest3141-21perf20:20:011
2882799180,1cyclictest0-21swapper/120:55:141
2882799180,1cyclictest0-21swapper/120:55:141
2882799180,17cyclictest30865-21sessionclean21:09:011
28822991815,2cyclictest26997-21nfsd421:00:170
28822991814,3cyclictest24237-21python321:55:010
28822991814,3cyclictest10874-21grep22:25:180
2882299181,15cyclictest0-21swapper/020:45:180
2882299180,3cyclictest0-21swapper/020:22:000
2882299180,17cyclictest0-21swapper/023:05:010
2882299180,17cyclictest0-21swapper/023:05:010
2882299180,16cyclictest29555-21ls19:10:140
2883299172,1cyclictest28-21ksoftirqd/220:07:062
28832991716,1cyclictest28-21ksoftirqd/222:26:012
28832991715,1cyclictest0-21swapper/220:02:342
28832991714,2cyclictest4035-21H222:10:212
28832991714,2cyclictest29261-21pzem_energy23:55:192
28832991714,2cyclictest26341-21expr21:55:202
28832991714,2cyclictest24624-21systemctl20:55:212
28832991714,2cyclictest24624-21systemctl20:55:212
28832991714,2cyclictest19871-21chrt20:49:542
28832991714,2cyclictest17957-21pzem_energy19:45:202
28832991714,2cyclictest1351-21lxd22:48:512
28832991713,3cyclictest0-21swapper/223:20:392
2883299171,15cyclictest1990-21nfsd420:15:172
2883299171,15cyclictest11531-21idleruntime19:35:172
2883299170,2cyclictest7250-21vmstat21:20:202
2883299170,2cyclictest32345-21cat23:05:132
2883299170,2cyclictest32345-21cat23:05:132
2883299170,2cyclictest23553-21nfsd423:45:192
2883299170,2cyclictest20667-21pzem_power21:45:212
2883299170,2cyclictest11181-21expr21:30:122
2883299170,1cyclictest0-21swapper/220:35:232
2883299170,16cyclictest843-21systemd-network22:11:362
2883299170,16cyclictest5453-21nfsd422:15:172
2883299170,16cyclictest4183-21nfsd423:10:202
2883299170,16cyclictest30976-21cron21:10:012
2883299170,16cyclictest28499-21perf23:00:002
2883299170,16cyclictest25802-21cat23:50:132
2883299170,16cyclictest2575-21cat19:20:162
2883299170,16cyclictest22507-21fschecks_count19:55:152
2883299170,16cyclictest21747-21date19:55:012
2883299170,16cyclictest18299-21sed21:40:202
2883299170,16cyclictest14687-21date22:35:002
2883299170,16cyclictest0-21swapper/219:40:142
2883299170,16cyclictest0-21swapper/200:10:212
28827991715,1cyclictest29304-21mailstats23:55:201
28827991714,2cyclictest9318-21awk19:30:181
28827991714,2cyclictest8046-21fschecks_time00:15:141
28827991714,2cyclictest3991-21H222:10:211
28827991714,2cyclictest3450-21gsd-color23:50:201
28827991714,2cyclictest31836-21nfsd400:00:171
28827991714,2cyclictest14499-21snapd21:10:261
28827991713,3cyclictest455-21plymouthd22:45:201
2882799171,15cyclictest21-21ksoftirqd/122:00:581
2882799170,2cyclictest8815-21cstates23:20:121
2882799170,2cyclictest3351-21lxd23:36:361
2882799170,2cyclictest18522-21tr00:35:141
2882799170,16cyclictest7481-21tune2fs22:20:151
2882799170,16cyclictest6718-21smartctl21:20:171
2882799170,16cyclictest6380-21/usr/sbin/munin19:25:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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