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2025-12-05 - 21:39
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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 Fri Dec 05, 2025 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7885992827,1cyclictest0-21swapper/112:20:151
788599248,2cyclictest1086-21snmpd11:55:261
788599248,2cyclictest1086-21snmpd11:55:261
789099230,22cyclictest0-21swapper/207:55:242
788599230,18cyclictest3441-21gsd-color08:42:251
7881992319,3cyclictest17681-21plymouth07:40:010
789099190,17cyclictest0-21swapper/208:57:302
788599192,2cyclictest1057-21smartctl08:25:191
788599192,2cyclictest1057-21smartctl08:25:181
788599192,16cyclictest27028-21smtpd08:08:581
7885991917,1cyclictest0-21swapper/109:56:091
788599190,18cyclictest0-21swapper/110:29:581
788599190,18cyclictest0-21swapper/107:12:471
788199193,1cyclictest0-21swapper/007:29:590
788199193,15cyclictest9-21ksoftirqd/007:10:070
7881991915,3cyclictest4258-21munin-plugin-st08:40:020
789099182,1cyclictest28-21ksoftirqd/207:55:012
7890991816,1cyclictest0-21swapper/208:54:512
7890991815,2cyclictest30609-21nfsd410:35:192
7890991815,2cyclictest29135-21munin-plugin-st10:35:012
7890991815,2cyclictest2850-21idleruntime-cro08:35:002
789099181,16cyclictest0-21swapper/211:55:152
789099181,16cyclictest0-21swapper/211:55:152
789099181,16cyclictest0-21swapper/208:40:012
789099180,18cyclictest0-21swapper/212:30:172
789099180,17cyclictest30085-21perf11:35:012
789099180,17cyclictest1403-21lxd08:21:202
788599182,15cyclictest0-21swapper/110:16:131
7885991815,2cyclictest9615-21expr10:00:171
7885991814,3cyclictest1411-21lxd09:03:201
7885991814,2cyclictest3788-21grep09:50:131
788599180,2cyclictest32486-21cat12:35:011
788599180,1cyclictest0-21swapper/107:29:521
7881991815,2cyclictest8393-21pzem_current11:50:220
7881991815,2cyclictest24100-21tr10:25:150
788199180,17cyclictest0-21swapper/010:30:140
789099179,5cyclictest0-21swapper/210:00:172
789099172,1cyclictest28129-21nfsd409:35:152
789099172,1cyclictest0-21swapper/210:29:262
7890991715,1cyclictest4759-21grep10:45:222
7890991715,1cyclictest0-21swapper/212:21:002
7890991715,1cyclictest0-21swapper/211:37:032
7890991715,1cyclictest0-21swapper/208:05:432
7890991714,2cyclictest9807-21ntpq10:55:202
7890991714,2cyclictest6272-21sed08:40:222
7890991714,2cyclictest4538-21H212:26:332
7890991714,2cyclictest4534-21H212:26:332
7890991714,2cyclictest4534-21H212:26:332
7890991714,2cyclictest4500-21VM12:26:332
7890991714,2cyclictest28921-21nfsd408:10:182
7890991714,2cyclictest18970-21latency10:15:172
789099171,15cyclictest13004-21date09:10:022
789099171,15cyclictest0-21swapper/209:55:192
789099170,2cyclictest5303-21grep11:45:182
789099170,2cyclictest454-21plymouthd09:30:142
789099170,2cyclictest21311-21cut09:25:012
789099170,16cyclictest7798-21python307:10:012
789099170,16cyclictest4534-21H212:26:332
789099170,16cyclictest4523-21H212:26:332
789099170,16cyclictest29061-21munin-run12:30:012
789099170,16cyclictest2848-21cron12:40:002
789099170,16cyclictest21770-21memory10:20:172
789099170,16cyclictest17736-21http07:40:002
789099170,16cyclictest15840-21sed09:15:012
789099170,16cyclictest1374-21munin-node09:45:122
789099170,16cyclictest1374-21munin-node09:45:112
789099170,16cyclictest11533-21expr11:00:142
789099170,16cyclictest0-21swapper/208:48:162
7885991715,1cyclictest0-21swapper/111:45:201
7885991715,1cyclictest0-21swapper/110:48:471
7885991714,2cyclictest7985-21chrt08:50:071
7885991714,2cyclictest7019-21awk10:50:191
7885991714,2cyclictest4002-21perf08:40:011
7885991714,2cyclictest31689-21netstat11:35:161
7885991714,2cyclictest28140-21cat08:10:141
7885991714,2cyclictest20645-21cat11:15:191
7885991714,2cyclictest18981-21/usr/sbin/munin09:20:111
7885991714,2cyclictest16351-21ls09:15:131
7885991714,2cyclictest13772-21expr09:10:111
7885991713,2cyclictest4532-21H212:26:331
788599171,15cyclictest23216-21/usr/sbin/munin07:55:151
788599170,3cyclictest0-21swapper/112:25:151
788599170,2cyclictest3350-21master09:33:091
788599170,2cyclictest22384-21switchtime12:15:231
788599170,2cyclictest1845-21systemd-journal12:35:181
788599170,1cyclictest4532-21H212:26:331
788599170,16cyclictest414-20systemd-journal10:10:011
788599170,16cyclictest28837-21sed09:35:201
788599170,16cyclictest22437-21cut11:20:141
788599170,16cyclictest20803-21grep10:20:131
788599170,16cyclictest18090-21dpkg07:40:021
788599170,16cyclictest17811-21sed11:10:151
788599170,16cyclictest17325-21chrt10:12:161
788599170,16cyclictest17325-21chrt10:12:151
788599170,16cyclictest1404-21lxd11:30:501
788599170,16cyclictest12326-21/usr/sbin/munin12:00:081
788599170,16cyclictest0-21swapper/112:10:151
788599170,15cyclictest0-21swapper/110:35:151
788199172,1cyclictest0-21swapper/008:09:080
7881991715,1cyclictest2149-21sed11:40:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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