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2025-12-14 - 02:24
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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 Dec 13, 2025 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1981499252,22cyclictest0-21swapper/212:01:012
1981499252,1cyclictest0-21swapper/207:58:262
1981299258,14cyclictest0-21swapper/008:23:150
19814992316,2cyclictest28471-21latency_hist07:25:012
19814992213,3cyclictest20691-21cpuspeed_turbos09:07:092
1981499221,15cyclictest0-21swapper/208:33:162
1981499210,3cyclictest3989-21H222:02:192
1981499210,2cyclictest3989-21H222:02:192
19813992117,3cyclictest27819-21grep10:17:101
19813992117,3cyclictest0-21swapper/110:55:001
1981299210,17cyclictest0-21swapper/012:34:310
1981499203,1cyclictest28-21ksoftirqd/211:20:572
1981399203,16cyclictest0-21swapper/111:57:241
1981399202,17cyclictest0-21swapper/112:15:571
19813992013,3cyclictest0-21swapper/107:36:061
19812992012,7cyclictest843-21systemd-network07:17:400
1981499193,1cyclictest28-21ksoftirqd/212:19:402
1981499193,15cyclictest0-21swapper/208:39:022
1981499192,16cyclictest0-21swapper/211:15:442
1981499192,16cyclictest0-21swapper/211:15:432
19814991917,1cyclictest28-21ksoftirqd/212:27:062
19814991916,2cyclictest3981-21H222:02:192
19814991916,2cyclictest24744-21wc11:07:152
19814991914,4cyclictest399-20systemd-journal10:44:092
1981499190,2cyclictest4035-21H222:02:192
1981399190,3cyclictest0-21swapper/112:26:391
1981399190,17cyclictest0-21swapper/108:02:491
1981299192,16cyclictest0-21swapper/010:57:120
19812991917,1cyclictest0-21swapper/007:32:130
1981299190,18cyclictest0-21swapper/009:57:490
1981299190,16cyclictest3983-21H222:02:190
1981499182,1cyclictest17412sleep209:28:562
1981499182,15cyclictest0-21swapper/210:33:072
1981499181,2cyclictest3981-21H222:02:192
1981499180,3cyclictest0-21swapper/211:00:212
1981499180,3cyclictest0-21swapper/209:57:172
1981499180,3cyclictest0-21swapper/208:57:072
1981499180,2cyclictest4099-21H222:02:192
1981499180,1cyclictest4099-21H222:02:192
1981399182,15cyclictest9435-21nfsd411:37:131
19813991816,1cyclictest0-21swapper/108:58:151
19813991815,2cyclictest686-21grep10:27:101
19813991815,2cyclictest3983-21H222:02:191
19813991815,2cyclictest3030-21gmain08:34:381
19813991814,3cyclictest0-21swapper/110:42:091
1981399181,2cyclictest3976-21H222:02:191
1981399181,16cyclictest4035-21H222:02:191
1981399181,16cyclictest3981-21H222:02:191
1981399181,16cyclictest15198-21nfsd411:47:131
1981399180,2cyclictest3989-21H222:02:191
1981399180,17cyclictest3976-21H222:02:191
1981399180,15cyclictest3979-21H222:02:191
19812991816,1cyclictest0-21swapper/008:50:360
19812991816,1cyclictest0-21swapper/008:47:570
19812991815,2cyclictest22186-21cpuspeed_turbos10:07:090
19812991815,1cyclictest0-21swapper/008:37:010
1981299180,2cyclictest3991-21H222:02:190
1981299180,2cyclictest0-21swapper/008:02:150
1981299180,17cyclictest0-21swapper/012:27:120
19814991715,1cyclictest43592sleep207:38:112
19814991715,1cyclictest0-21swapper/212:37:172
19814991714,2cyclictest9974-21timerandwakeup11:37:152
19814991714,2cyclictest8630-21ionclean10:38:592
19814991714,2cyclictest3707-21master08:07:492
19814991714,2cyclictest11111-21/usr/sbin/munin11:42:162
1981499171,15cyclictest2477-21switchtime10:27:172
1981499171,15cyclictest0-21swapper/207:32:102
1981499170,2cyclictest7816-21cut11:35:002
1981499170,2cyclictest5354-21sort07:42:092
1981499170,2cyclictest4035-21H222:02:192
1981499170,2cyclictest4035-21H222:02:192
1981499170,2cyclictest3991-21H222:02:192
1981499170,2cyclictest29811-21cron12:15:002
1981499170,2cyclictest29811-21cron12:14:592
1981499170,1cyclictest0-21swapper/208:52:032
1981499170,16cyclictest4035-21H222:02:192
1981499170,16cyclictest4035-21H222:02:192
1981499170,16cyclictest4035-21H222:02:192
1981499170,16cyclictest32434-21munin-plugin-st08:30:012
1981499170,16cyclictest28880-21cat09:20:022
1981499170,16cyclictest26683-21postgres08:19:442
1981499170,16cyclictest24668-21nfsd409:12:122
1981499170,16cyclictest23986-21latency_hist08:15:012
1981499170,16cyclictest18463-21missed_timers09:02:152
1981499170,16cyclictest1515-21lxd09:38:412
1981499170,16cyclictest12863-21timerandwakeup09:47:182
1981499170,16cyclictest12529-21ls07:52:162
1981499170,16cyclictest0-21swapper/212:22:122
1981499170,16cyclictest0-21swapper/210:03:542
1981399172,9cyclictest28270-21perf09:20:011
1981399172,1cyclictest0-21swapper/107:20:131
19813991715,1cyclictest0-21swapper/111:16:171
19813991715,1cyclictest0-21swapper/111:16:171
19813991715,1cyclictest0-21swapper/110:47:161
19813991714,2cyclictest9511-21expr08:47:101
19813991714,2cyclictest4225-21pzem_current09:32:161
19813991714,2cyclictest4225-21pzem_current09:32:151
19813991714,2cyclictest4005-21awk11:27:141
19813991714,2cyclictest3989-21H222:02:191
19813991714,2cyclictest3985-21H222:02:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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