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2026-04-05 - 21:46
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Sun Apr 05, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1089199240,23cyclictest26208-21iwlist09:30:150
10891992314,8cyclictest0-21swapper/007:35:010
10891992314,4cyclictest0-21swapper/010:00:000
1089199222,4cyclictest7651-21perf11:50:000
10891992213,5cyclictest0-21swapper/012:34:270
1089199220,18cyclictest0-21swapper/008:24:390
10893992117,3cyclictest0-21swapper/211:40:552
10893992117,3cyclictest0-21swapper/208:51:002
1089199210,17cyclictest0-21swapper/007:45:130
10892992018,1cyclictest15293-21ntp_kernel_err07:15:181
1089199202,14cyclictest0-21swapper/009:07:010
1089399192,16cyclictest29670-21grep10:35:002
1089399192,16cyclictest20726-21needreboot12:10:172
10893991917,1cyclictest0-21swapper/209:34:582
10893991917,1cyclictest0-21swapper/207:56:222
10893991916,2cyclictest26508-21cut12:20:202
10893991915,3cyclictest0-21swapper/209:43:382
10893991915,2cyclictest29346-21nfsd409:35:172
1089399191,17cyclictest0-21swapper/208:43:232
1089399190,16cyclictest3976-21H222:10:212
10892991914,2cyclictest3981-21H222:10:211
1089199192,16cyclictest31264-21cut10:35:160
10891991917,1cyclictest0-21swapper/010:29:090
10891991910,5cyclictest0-21swapper/010:50:120
1089199190,18cyclictest0-21swapper/010:06:590
1089399188,0cyclictest0-21swapper/209:50:162
10893991816,1cyclictest32332chrt12:38:432
10893991816,1cyclictest32332chrt12:38:422
10893991816,1cyclictest188752chrt12:08:542
10893991816,1cyclictest0-21swapper/207:50:182
10893991816,1cyclictest0-21swapper/207:50:182
10893991815,2cyclictest3987-21H222:10:212
10893991815,2cyclictest3976-21H222:10:212
10893991815,2cyclictest28988-21nfsd407:40:192
10893991815,2cyclictest1100-21snmpd09:17:192
10893991814,3cyclictest843-21systemd-network12:33:252
10893991813,4cyclictest0-21swapper/208:27:372
1089399181,2cyclictest9288-21chrt09:56:392
1089399181,2cyclictest32684-21missed_timers11:35:192
10893991812,5cyclictest0-21swapper/210:40:152
1089399180,1cyclictest0-21swapper/207:30:212
1089399180,17cyclictest21361-21fschecks_time11:15:152
1089399180,17cyclictest21361-21fschecks_time11:15:142
1089399180,17cyclictest12967-21ntp_offset09:05:192
1089399180,15cyclictest3991-21H222:10:212
1089399180,11cyclictest0-21swapper/211:52:172
10892991816,1cyclictest21-21ksoftirqd/107:26:531
10892991816,1cyclictest0-21swapper/111:15:011
10892991816,1cyclictest0-21swapper/111:15:011
10892991815,2cyclictest3983-21H222:10:211
10892991815,2cyclictest26962-21chrt07:37:201
10892991814,3cyclictest455-21plymouthd07:20:211
1089299180,1cyclictest3991-21H222:10:211
1089299180,17cyclictest2007-21systemd-journal09:17:011
1089199182,15cyclictest260042chrt08:34:360
1089199182,15cyclictest0-21swapper/009:18:370
10891991814,1cyclictest0-21swapper/010:05:010
10891991813,4cyclictest0-21swapper/008:01:400
1089199180,3cyclictest28587-21awk10:30:180
1089199180,2cyclictest4099-21H222:10:210
1089199180,17cyclictest843-21systemd-network12:07:410
1089199180,17cyclictest0-21swapper/009:00:200
1089399172,14cyclictest0-21swapper/207:10:122
10893991715,1cyclictest0-21swapper/212:25:132
10893991714,2cyclictest3987-21H222:10:212
10893991714,2cyclictest3987-21H222:10:212
10893991714,2cyclictest22557-21cat12:15:112
10893991714,2cyclictest19940-21/usr/sbin/munin09:20:212
10893991714,2cyclictest1419-21needreboot08:45:172
10893991714,2cyclictest12927-21ls11:55:212
10893991714,2cyclictest0-21swapper/207:25:122
10893991714,1cyclictest0-21swapper/207:45:152
10893991713,3cyclictest8220-21nfsd410:50:162
1089399171,2cyclictest3978-21H222:10:212
10893991712,4cyclictest14121-21grep07:15:152
1089399170,2cyclictest32638-21id10:40:012
1089399170,2cyclictest19399-21pzem_voltage08:20:202
1089399170,2cyclictest12168-21sed11:00:012
1089399170,16cyclictest6105-21apache_processe08:55:132
1089399170,16cyclictest4776-21tune2fs10:45:132
1089399170,16cyclictest27702-21pzem_power11:25:172
1089399170,16cyclictest17952-21users10:10:222
1089399170,16cyclictest15654-21munin-run10:10:022
1089399170,16cyclictest15536-21expr08:15:132
1089399170,16cyclictest15498-21mailstats12:00:202
1089399170,16cyclictest13499-21sed08:10:192
1089399170,16cyclictest11169-21munin-run09:05:002
1089399170,16cyclictest0-21swapper/209:26:512
10892991715,1cyclictest0-21swapper/108:00:161
10892991714,2cyclictest4035-21H222:10:211
10892991714,2cyclictest399-20systemd-journal09:03:571
10892991714,2cyclictest3987-21H222:10:211
10892991714,2cyclictest26598-21expr11:25:111
10892991714,2cyclictest20483-21nfsd410:15:161
10892991714,2cyclictest17029-21sed09:15:011
10892991714,2cyclictest16304-21nfsd408:15:161
10892991714,2cyclictest13941-21grep10:05:181
10892991714,2cyclictest0-21swapper/110:25:001
1089299171,15cyclictest3990-21H222:10:211
1089299171,15cyclictest31640-21taskset11:35:141
1089299171,15cyclictest31496-21nvmesmart_nvme010:35:171
1089299170,3cyclictest0-21swapper/109:25:191
1089299170,2cyclictest4035-21H222:10:211
1089299170,2cyclictest3976-21H222:10:211
1089299170,2cyclictest32517-21chrt12:31:281
1089299170,1cyclictest0-21swapper/107:14:321
1089299170,16cyclictest843-21systemd-network08:47:281
1089299170,16cyclictest6798-21fschecks_time08:55:151
1089299170,16cyclictest4118-21pzem_current11:40:191
1089299170,16cyclictest3735-21/usr/sbin/munin07:55:021
1089299170,16cyclictest3735-21/usr/sbin/munin07:55:011
1089299170,16cyclictest28047-21ls09:35:011
1089299170,16cyclictest27617-21cat10:30:151
1089299170,16cyclictest2208-21nfsd412:35:171
1089299170,16cyclictest2208-21nfsd412:35:161
1089299170,16cyclictest20313-21perf08:25:011
1089299170,16cyclictest20188-21fschecks_count12:10:141
1089299170,16cyclictest1085-21gdbus08:25:201
1089299170,16cyclictest0-21swapper/111:58:321
1089299170,16cyclictest0-21swapper/110:40:201
1089299170,16cyclictest0-21swapper/107:45:071
1089199175,11cyclictest0-21swapper/009:47:030
10891991715,1cyclictest0-21swapper/012:21:220
10891991715,1cyclictest0-21swapper/011:55:130
10891991714,2cyclictest3538-21sed11:40:150
10891991714,2cyclictest26957-21idleruntime11:25:130
10891991714,2cyclictest21290-21chrt12:10:200
10891991714,2cyclictest2073-21cat11:40:000
10891991714,2cyclictest1829-21systemd-journal09:15:000
1089199171,15cyclictest3991-21H222:10:210
1089199171,15cyclictest31933-21iwlist09:40:180
1089199171,15cyclictest0-21swapper/009:50:170
1089199171,15cyclictest0-21swapper/007:35:110
1089199170,2cyclictest3976-21H222:10:210
1089199170,2cyclictest18648-21/usr/sbin/munin07:20:220
1089199170,2cyclictest16830-21snapd12:25:180
1089199170,16cyclictest28277-21grep09:35:130
1089199170,16cyclictest2553-21chrt08:48:550
1089199170,16cyclictest2449-21awk10:40:180
1089199170,16cyclictest23808-21pzem12:15:170
1089199170,16cyclictest2307-21ntpq07:50:190
1089199170,16cyclictest2307-21ntpq07:50:180
1089199170,16cyclictest16056-21sed08:15:150
1089199170,16cyclictest15304-21ntpq12:00:180
1089199170,16cyclictest11489-21expr07:10:130
1089199170,16cyclictest10646-21https11:55:010
1089199170,16cyclictest10498-21/usr/sbin/munin08:05:180
10893991614,1cyclictest19863-21smartctl10:15:132
10893991614,1cyclictest18297-21expr11:10:142
10893991614,1cyclictest0-21swapper/211:30:132
10893991614,1cyclictest0-21swapper/211:20:112
10893991614,1cyclictest0-21swapper/209:45:162
1089399160,1cyclictest0-21swapper/210:20:142
1089399160,15cyclictest10361-21expr10:00:132
1089399160,15cyclictest0-21swapper/211:45:172
1089399160,15cyclictest0-21swapper/210:25:172
10892991614,1cyclictest19940-21/usr/sbin/munin09:20:181
10892991614,1cyclictest0-21swapper/112:20:141
10892991614,1cyclictest0-21swapper/112:15:091
10892991614,1cyclictest0-21swapper/111:20:131
10892991614,1cyclictest0-21swapper/111:10:211
10892991614,1cyclictest0-21swapper/111:00:201
10892991614,1cyclictest0-21swapper/110:50:121
10892991614,1cyclictest0-21swapper/110:10:041
10892991614,1cyclictest0-21swapper/109:35:121
10892991613,2cyclictest7852-21sort09:55:141
10892991613,2cyclictest3979-21H222:10:211
10892991613,2cyclictest3845-21expr08:50:131
1089299160,1cyclictest0-21swapper/109:05:141
1089299160,15cyclictest9574-21/usr/sbin/munin10:55:101
1089299160,15cyclictest5311-21/usr/sbin/munin11:45:101
1089299160,15cyclictest31023-21/usr/sbin/munin09:40:131
1089299160,15cyclictest30459-21mailstats11:30:191
1089299160,15cyclictest298892chrt12:27:511
1089299160,15cyclictest25806-21needreboot10:25:191
1089299160,15cyclictest18289-21swap12:05:221
1089299160,15cyclictest0-21swapper/111:05:141
1089299160,15cyclictest0-21swapper/110:45:051
1089299160,15cyclictest0-21swapper/110:00:131
1089299160,15cyclictest0-21swapper/109:48:531
10891991614,1cyclictest3983-21H222:10:210
10891991614,1cyclictest0-21swapper/010:10:470
10891991614,1cyclictest0-21swapper/008:50:130
10891991613,2cyclictest10651-21sort10:55:160
10891991613,1cyclictest0-21swapper/008:55:140
1089199160,2cyclictest5381-21nvmesmart_nvme007:55:190
1089199160,2cyclictest21138-21cpuspeed_turbos08:25:140
1089199160,1cyclictest0-21swapper/012:36:490
1089199160,1cyclictest0-21swapper/012:36:490
1089199160,15cyclictest4950-21cat10:45:140
1089199160,15cyclictest29648-21timerwakeupswit07:40:230
1089199160,15cyclictest29174-21cat11:30:120
1089199160,15cyclictest27834-21ntpq08:35:180
1089199160,15cyclictest21418-21smartctl11:15:140
1089199160,15cyclictest21418-21smartctl11:15:140
1089199160,15cyclictest16514-21awk11:05:180
1089199160,15cyclictest13972-21mailstats08:10:230
1089199160,15cyclictest0-21swapper/011:25:010
1089199160,15cyclictest0-21swapper/011:00:120
1089199160,15cyclictest0-21swapper/010:20:120
1089199160,15cyclictest0-21swapper/010:15:030
1089199160,15cyclictest0-21swapper/009:25:150
10892991513,1cyclictest8029-21/usr/sbin/munin11:50:151
1089299150,1cyclictest0-21swapper/109:50:151
1089199150,14cyclictest0-21swapper/011:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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