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2026-04-24 - 19:57
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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 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
3108399170,16cyclictest15945-21lxd07:40:401
3108399170,16cyclictest15824-21munin-plugin-st07:40:021
3108399170,16cyclictest14506-21snapd09:30:291
3108399170,16cyclictest14506-21snapd07:57:581
3108399170,16cyclictest0-21swapper/107:34:141
3108399170,16cyclictest0-21swapper/107:34:141
3108299172,1cyclictest0-21swapper/008:05:150
31082991715,1cyclictest0-21swapper/007:40:150
31082991714,2cyclictest7529-21processes09:15:200
31082991714,2cyclictest399-20systemd-journal10:30:010
31082991714,2cyclictest3981-21H222:10:210
31082991714,2cyclictest29868-21ps11:50:190
31082991714,2cyclictest25164-21latency10:45:150
31082991714,2cyclictest2170-21sed08:10:160
31082991714,2cyclictest16129-21chrt08:35:140
31082991714,2cyclictest0-21swapper/010:15:190
3108299170,2cyclictest4518-21awk09:10:170
3108299170,2cyclictest3981-21H222:10:210
3108299170,2cyclictest31779-21chrt10:58:340
3108299170,2cyclictest18166-21sed12:25:160
3108299170,2cyclictest1377-21lxd11:06:410
3108299170,2cyclictest12522-21chrt10:23:420
3108299170,1cyclictest3991-21H222:10:210
3108299170,1cyclictest0-21swapper/009:49:110
3108299170,1cyclictest0-21swapper/007:52:570
3108299170,16cyclictest8148-21expr07:25:140
3108299170,16cyclictest6063-21grep10:10:180
3108299170,16cyclictest3989-21H222:10:210
3108299170,16cyclictest31964-21cron09:05:010
3108299170,16cyclictest29454-21sed10:55:000
3108299170,16cyclictest24276-21cpuspeed_turbos07:55:140
3108299170,16cyclictest20266-21/usr/sbin/munin09:40:170
3108299170,16cyclictest19765-21date12:30:010
3108299170,16cyclictest19626-21kernelversion07:45:160
3108299170,16cyclictest1761-21systemd11:00:510
3108299170,15cyclictest0-21swapper/011:16:560
31084991614,1cyclictest14115-21/usr/sbin/munin07:35:172
31084991614,1cyclictest0-21swapper/212:35:162
31084991614,1cyclictest0-21swapper/211:15:162
31084991614,1cyclictest0-21swapper/209:50:142
31084991614,1cyclictest0-21swapper/209:38:442
31084991614,1cyclictest0-21swapper/208:55:192
31084991614,1cyclictest0-21swapper/208:25:132
31084991614,1cyclictest0-21swapper/207:16:302
31084991614,1cyclictest0-21swapper/207:13:342
31084991613,2cyclictest25668-21/usr/sbin/munin11:45:112
31084991613,2cyclictest23641-21fschecks_count09:45:142
31084991613,2cyclictest11819-21cpuspeed_turbos12:15:122
3108499160,2cyclictest15995-21apache_processe07:40:122
3108499160,1cyclictest0-21swapper/211:20:122
3108499160,1cyclictest0-21swapper/210:50:182
3108499160,1cyclictest0-21swapper/209:40:172
3108499160,15cyclictest7181-21netstat12:05:172
3108499160,15cyclictest14476-21expr12:20:132
3108499160,15cyclictest0-21swapper/211:30:162
3108499160,15cyclictest0-21swapper/211:00:182
3108499160,15cyclictest0-21swapper/210:10:122
3108499160,15cyclictest0-21swapper/208:05:022
3108499160,15cyclictest0-21swapper/207:50:122
3108499160,15cyclictest0-21swapper/207:45:142
3108499160,15cyclictest0-21swapper/207:27:102
31083991614,1cyclictest30136-21cpuspeed_turbos08:05:141
31083991614,1cyclictest0-21swapper/112:30:201
31083991614,1cyclictest0-21swapper/112:10:141
31083991614,1cyclictest0-21swapper/111:30:101
31083991614,1cyclictest0-21swapper/110:20:141
31083991614,1cyclictest0-21swapper/110:05:131
31083991614,1cyclictest0-21swapper/109:45:171
31083991614,1cyclictest0-21swapper/109:25:191
31083991614,1cyclictest0-21swapper/108:25:171
31083991614,1cyclictest0-21swapper/107:45:131
31083991613,2cyclictest9125-21cpu11:15:121
31083991613,2cyclictest1856-21systemd-udevd09:40:521
3108399160,1cyclictest0-21swapper/111:38:591
3108399160,1cyclictest0-21swapper/111:00:151
3108399160,15cyclictest31194-21/usr/sbin/munin10:00:121
3108399160,15cyclictest25198-21latency_hist12:40:001
3108399160,15cyclictest12837-21cpuspeed_turbos08:30:121
3108399160,15cyclictest0-21swapper/111:10:121
3108399160,15cyclictest0-21swapper/109:35:081
3108399160,15cyclictest0-21swapper/109:10:161
31082991614,1cyclictest18303-21/usr/sbin/munin08:40:130
31082991614,1cyclictest11925-21apache_volume09:25:120
31082991614,1cyclictest0-21swapper/012:38:590
31082991614,1cyclictest0-21swapper/012:10:140
31082991614,1cyclictest0-21swapper/011:55:140
31082991614,1cyclictest0-21swapper/010:35:180
31082991614,1cyclictest0-21swapper/010:00:010
31082991614,1cyclictest0-21swapper/008:50:110
31082991614,1cyclictest0-21swapper/008:50:010
31082991614,1cyclictest0-21swapper/008:20:120
31082991614,1cyclictest0-21swapper/008:20:120
31082991614,1cyclictest0-21swapper/008:00:130
31082991614,1cyclictest0-21swapper/007:20:140
31082991614,1cyclictest0-21swapper/007:15:160
31082991613,2cyclictest5800-21dpkg12:05:010
31082991612,2cyclictest5958-21https11:10:020
3108299161,1cyclictest9-21ksoftirqd/011:30:120
3108299160,1cyclictest0-21swapper/009:30:140
3108299160,15cyclictest3450-21gsd-color11:35:100
3108299160,15cyclictest250082sleep011:41:430
3108299160,15cyclictest19024-21ls09:35:210
3108299160,15cyclictest0-21swapper/010:05:140
3108299160,15cyclictest0-21swapper/009:08:590
31083991514,1cyclictest0-21swapper/112:15:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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