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2026-04-24 - 15:55
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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 Apr 24, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3108499246,17cyclictest0-21swapper/212:29:592
31083992415,9cyclictest1964-21kworker/1:112:08:561
3108499230,22cyclictest0-21swapper/211:10:262
3108399220,21cyclictest843-21systemd-network10:47:271
31084992119,1cyclictest28-21ksoftirqd/210:24:282
3108499200,19cyclictest426-21systemd-udevd09:24:522
3108299203,3cyclictest0-21swapper/009:22:360
3108499190,18cyclictest25362-21nfsd410:45:162
3108499190,18cyclictest0-21swapper/209:04:522
31083991916,2cyclictest31862-21anacron09:03:451
31083991913,5cyclictest0-21swapper/111:45:251
31083991913,1cyclictest0-21swapper/110:15:111
3108399191,16cyclictest396-21head11:55:171
3108399190,4cyclictest13236-21ntp_kernel_pll_11:20:171
3108399190,16cyclictest4035-21H222:10:211
31082991917,1cyclictest0-21swapper/012:22:090
3108299191,1cyclictest0-21swapper/011:24:590
3108499182,1cyclictest22439-21ntp_offset08:45:192
3108499182,15cyclictest123952sleep207:31:502
3108499182,15cyclictest123952sleep207:31:492
31084991814,3cyclictest2886-21iscsid10:25:122
31084991812,5cyclictest426-21systemd-udevd12:34:512
3108499180,17cyclictest3976-21H222:10:212
3108499180,17cyclictest3976-21H222:10:212
3108499180,17cyclictest17030-21sed11:30:002
3108499180,16cyclictest397-21cut11:55:172
31083991816,1cyclictest0-21swapper/112:20:011
31083991816,1cyclictest0-21swapper/112:04:071
31083991816,1cyclictest0-21swapper/110:30:511
31083991816,1cyclictest0-21swapper/110:30:511
3108399180,4cyclictest0-21swapper/108:10:161
3108399180,17cyclictest870-21systemd-logind11:28:511
3108399180,17cyclictest843-21systemd-network10:52:051
3108399180,17cyclictest426-21systemd-udevd10:14:511
3108399180,16cyclictest455-21plymouthd09:50:201
3108399180,16cyclictest26121-21perf08:55:011
3108299182,15cyclictest137842chrt12:18:430
3108299182,15cyclictest0-21swapper/011:26:090
31082991815,2cyclictest28094-21cut08:55:160
31082991815,2cyclictest27122-21ntpq09:50:180
31082991813,4cyclictest11127-21strings08:25:180
31082991812,5cyclictest0-21swapper/010:30:110
31082991812,5cyclictest0-21swapper/010:30:110
3108299180,3cyclictest2786-21grep12:00:110
3108299180,3cyclictest11000-21fschecks_time07:30:140
3108299180,3cyclictest11000-21fschecks_time07:30:140
3108299180,17cyclictest843-21systemd-network09:55:520
31084991714,2cyclictest925-21/usr/sbin/munin08:10:152
31084991714,2cyclictest3991-21H222:10:212
31084991714,2cyclictest3985-21H222:10:212
31084991714,2cyclictest28868-21cat11:50:132
31084991714,2cyclictest27499-21df08:00:142
31084991714,2cyclictest20508-21expr11:35:142
31084991714,2cyclictest14379-21latency_hist09:30:012
31084991713,3cyclictest4162-21nfsd412:00:162
3108499171,15cyclictest316842chrt10:57:172
3108499171,15cyclictest28-21ksoftirqd/209:30:132
3108499171,15cyclictest0-21swapper/211:40:132
3108499170,2cyclictest8104-21chrt09:17:052
3108499170,2cyclictest5654-21python311:10:002
3108499170,2cyclictest4300-21cron10:09:002
3108499170,2cyclictest3989-21H222:10:212
3108499170,2cyclictest3981-21H222:10:212
3108499170,16cyclictest8279-21hddtemp_smartct10:15:142
3108499170,16cyclictest5601-21lxd10:42:412
3108499170,16cyclictest426-21systemd-udevd09:56:512
3108499170,16cyclictest426-21systemd-udevd09:08:522
3108499170,16cyclictest3284-21cpuspeed_turbos09:10:122
3108499170,16cyclictest31931-21http_loadtime10:00:152
3108499170,16cyclictest25823-21chrt08:51:512
3108499170,16cyclictest24573-21ls07:55:132
3108499170,16cyclictest2069-21systemd-udevd08:32:522
3108499170,16cyclictest19611-21awk08:40:182
3108499170,16cyclictest19220-21fschecks_time10:35:152
3108499170,16cyclictest17121-21grep10:30:172
3108499170,16cyclictest17121-21grep10:30:162
31083991714,2cyclictest9420-21expr09:20:121
31083991714,2cyclictest31400-21cat11:55:001
31083991714,2cyclictest2872-21systemd-logind10:38:521
31083991713,3cyclictest4099-21H222:10:211
3108399171,2cyclictest14584-21sed10:25:181
3108399171,15cyclictest21-21ksoftirqd/108:00:131
3108399170,2cyclictest4099-21H222:10:211
3108399170,2cyclictest4099-21H222:10:211
3108399170,2cyclictest3972-21cut11:05:171
3108399170,2cyclictest30825-21grep10:55:171
3108399170,2cyclictest30459-21chrt09:56:041
3108399170,2cyclictest21626-21df_inode08:45:141
3108399170,2cyclictest18637-21expr08:40:151
3108399170,2cyclictest15784-21expr08:35:131
3108399170,16cyclictest7614-21apache_processe07:25:111
3108399170,16cyclictest6612-21df_inode09:15:141
3108399170,16cyclictest5565-21cut07:20:161
3108399170,16cyclictest3985-21H222:10:211
3108399170,16cyclictest3246-21awk07:15:181
3108399170,16cyclictest3053-21systemd-logind09:08:521
3108399170,16cyclictest28239-21nfsd408:55:171
3108399170,16cyclictest23639-21fschecks_time11:40:151
3108399170,16cyclictest22689-21awk10:40:171
3108399170,16cyclictest18400-21nfsd412:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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