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2026-04-18 - 16:03
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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 Sat Apr 18, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4297992514,6cyclictest19967-21nfsd409:30:171
430399220,1cyclictest0-21swapper/209:39:422
4297992218,3cyclictest24283-21awk12:30:181
429799214,16cyclictest4838-21acpi09:05:121
429799214,16cyclictest3336-21dpkg10:00:021
429799214,16cyclictest1360-21cut10:55:001
429799213,16cyclictest399-20systemd-journal08:21:221
4297992118,2cyclictest8298-21sed07:15:181
4297992118,2cyclictest7036-21sed07:15:011
4297992118,2cyclictest23311-21grep08:40:131
4297992118,2cyclictest23203-21wc10:35:141
4297992118,2cyclictest11207-21vmstat10:10:211
4297992118,2cyclictest0-21swapper/110:30:211
4297992118,2cyclictest0-21swapper/109:50:151
4297992117,3cyclictest28267-21tr08:50:141
4297992117,3cyclictest12298-21expr12:10:141
4297992117,3cyclictest12298-21expr12:10:141
4297992116,4cyclictest0-21swapper/110:22:171
430399204,15cyclictest0-21swapper/212:23:282
430399202,4cyclictest0-21swapper/210:52:062
429799204,15cyclictest0-21swapper/107:40:161
429799203,16cyclictest24300-21awk09:40:111
429799203,16cyclictest21247-21ps08:35:201
429799203,16cyclictest20685-21chrt07:39:311
429799203,16cyclictest0-21swapper/112:25:151
429799203,16cyclictest0-21swapper/110:25:131
429799203,16cyclictest0-21swapper/110:25:121
429799203,16cyclictest0-21swapper/109:15:191
4297992017,2cyclictest9275-21tr12:05:141
4297992017,2cyclictest7487-21latency_hist11:05:011
4297992017,2cyclictest18594-21cat12:20:171
4297992017,2cyclictest15925-21expr07:30:151
4297992017,2cyclictest14410-21mailstats07:25:221
4297992017,2cyclictest11277-21cat11:10:151
4297992017,2cyclictest0-21swapper/111:40:141
4297992016,3cyclictest9242-21processes09:10:211
4297992016,3cyclictest18064-21sed08:30:191
4297992016,3cyclictest10050-21grep08:15:221
4297992016,3cyclictest10050-21grep08:15:221
4297992016,3cyclictest0-21swapper/111:45:171
4297992016,3cyclictest0-21swapper/109:20:161
4297992015,4cyclictest0-21swapper/111:35:131
4297992015,4cyclictest0-21swapper/109:45:281
429799201,18cyclictest0-21swapper/109:35:151
430399193,15cyclictest28-21ksoftirqd/208:17:002
430399193,15cyclictest28-21ksoftirqd/208:16:592
430399192,16cyclictest8764-21nfsd411:05:172
430399192,16cyclictest8286-21latency_hist12:05:002
4303991917,1cyclictest7342-21cat10:05:152
4303991916,2cyclictest23319-21expr10:35:132
430399190,18cyclictest426-21systemd-udevd10:32:522
429799192,16cyclictest3450-21gsd-color10:40:091
429799192,16cyclictest0-21swapper/111:54:201
429799192,16cyclictest0-21swapper/111:20:131
429799192,16cyclictest0-21swapper/109:55:161
4297991917,1cyclictest0-21swapper/109:00:151
4297991917,1cyclictest0-21swapper/108:45:181
4297991916,2cyclictest9843-21find11:08:591
4297991916,2cyclictest22888-21processes11:30:161
4297991916,2cyclictest13277-21cpuspeed_turbos11:15:141
4297991916,2cyclictest0-21swapper/111:55:171
4297991916,2cyclictest0-21swapper/108:25:141
4297991916,2cyclictest0-21swapper/107:45:281
4297991915,3cyclictest0-21swapper/112:15:181
4297991915,3cyclictest0-21swapper/108:58:401
4297991915,3cyclictest0-21swapper/108:00:181
429799190,18cyclictest0-21swapper/111:25:131
429499195,0cyclictest0-21swapper/011:00:150
429499193,15cyclictest24612-21which07:45:170
429499190,1cyclictest0-21swapper/009:38:100
429499190,16cyclictest3987-21H222:10:210
4303991817,1cyclictest28-21ksoftirqd/209:29:002
4303991816,1cyclictest0-21swapper/211:10:172
4303991816,1cyclictest0-21swapper/207:23:582
4303991815,2cyclictest4035-21H222:10:212
4303991814,3cyclictest3976-21H222:10:212
4303991813,4cyclictest843-21systemd-network09:50:122
430399181,2cyclictest3983-21H222:10:212
430399180,2cyclictest3987-21H222:10:212
430399180,17cyclictest843-21systemd-network08:47:522
430399180,17cyclictest4099-21H222:10:212
430399180,16cyclictest3228-21ntp_offset10:55:192
4297991815,2cyclictest0-21swapper/110:15:141
4297991815,2cyclictest0-21swapper/108:05:191
4297991815,2cyclictest0-21swapper/107:21:341
4297991814,3cyclictest0-21swapper/112:01:191
429799181,16cyclictest0-21swapper/112:39:591
429799181,16cyclictest0-21swapper/110:09:371
429799180,17cyclictest0-21swapper/109:25:201
429499182,15cyclictest19927-21sed12:25:000
429499182,15cyclictest0-21swapper/009:25:540
4294991816,1cyclictest9-21ksoftirqd/011:10:210
4294991816,1cyclictest124222chrt09:15:410
4294991816,1cyclictest0-21swapper/009:45:400
4294991814,3cyclictest1594-21systemd08:25:010
429499181,16cyclictest32073-21/usr/sbin/munin08:00:170
429499181,16cyclictest0-21swapper/010:40:100
429499180,17cyclictest3991-21H222:10:210
430399172,1cyclictest3989-21H222:10:212
4303991715,1cyclictest28-21ksoftirqd/212:30:172
4303991715,1cyclictest28-21ksoftirqd/211:32:012
4303991715,1cyclictest18687-21expr07:35:142
4303991714,2cyclictest9611-21expr10:10:132
4303991714,2cyclictest3987-21H222:10:212
4303991714,2cyclictest3987-21H222:10:212
4303991714,2cyclictest3985-21H222:10:212
4303991714,2cyclictest3983-21H222:10:212
4303991714,2cyclictest3976-21H222:10:212
4303991714,2cyclictest22973-21cat08:40:122
4303991714,2cyclictest1521-21lxd08:56:412
4303991714,2cyclictest13359-21ntpq10:15:192
4303991713,3cyclictest0-21swapper/209:10:262
4303991713,2cyclictest4099-21H222:10:212
4303991712,2cyclictest18906-21cpuspeed_turbos09:30:132
430399171,15cyclictest15025-21cat10:20:122
430399170,2cyclictest5210-21expr11:00:132
430399170,2cyclictest4929-21cat07:10:142
430399170,2cyclictest29037-21munin-run07:55:012
430399170,2cyclictest22203-21taskset12:25:542
430399170,2cyclictest21775-21proxymap08:35:582
430399170,2cyclictest2007-21systemd-journal11:26:392
430399170,2cyclictest14290-21cat12:14:552
430399170,2cyclictest14290-21cat12:14:542
430399170,16cyclictest9817-21cat07:20:012
430399170,16cyclictest4099-21H222:10:212
430399170,16cyclictest4035-21H222:10:212
430399170,16cyclictest3991-21H222:10:212
430399170,16cyclictest3991-21H222:10:212
430399170,16cyclictest3991-21H222:10:212
430399170,16cyclictest3983-21H222:10:212
430399170,16cyclictest3983-21H222:10:212
430399170,16cyclictest3976-21H222:10:212
430399170,16cyclictest31645-21cron08:04:562
430399170,16cyclictest2069-21systemd-udevd10:40:522
430399170,16cyclictest14296-21date08:25:012
430399170,16cyclictest0-21swapper/209:03:152
4297991714,2cyclictest0-21swapper/108:11:401
429799171,2cyclictest0-21swapper/110:55:141
429799171,1cyclictest201rcuc/107:55:131
429799170,16cyclictest0-21swapper/107:50:171
4294991715,1cyclictest9-21ksoftirqd/012:05:000
4294991715,1cyclictest9-21ksoftirqd/008:18:420
4294991715,1cyclictest9-21ksoftirqd/008:18:420
4294991715,1cyclictest9-21ksoftirqd/008:11:530
4294991715,1cyclictest265872sleep009:44:560
4294991714,2cyclictest8534-21nfsd407:15:190
4294991714,2cyclictest6968-21df_inode10:05:130
4294991714,2cyclictest4826-21/usr/sbin/munin09:05:200
4294991714,2cyclictest32482-21apt09:55:120
4294991714,2cyclictest29332-21/usr/sbin/munin07:55:100
4294991714,2cyclictest27872-21sed08:50:010
4294991714,2cyclictest27221-21/usr/sbin/munin12:35:210
4294991714,2cyclictest1521-21lxd09:12:410
429499171,15cyclictest4099-21H222:10:210
429499171,15cyclictest3979-21H222:10:210
429499170,2cyclictest4099-21H222:10:210
429499170,2cyclictest4035-21H222:10:210
429499170,2cyclictest3991-21H222:10:210
429499170,2cyclictest3989-21H222:10:210
429499170,2cyclictest2069-21systemd-udevd08:38:520
429499170,2cyclictest19392-21awk08:35:000
429499170,2cyclictest12861-21egrep07:25:150
429499170,1cyclictest111rcu_preempt10:35:130
429499170,1cyclictest0-21swapper/012:09:070
429499170,16cyclictest3987-21H222:10:210
429499170,16cyclictest2927-21pzem_voltage09:00:200
429499170,16cyclictest2872-21systemd-logind10:24:520
429499170,16cyclictest27857-21/usr/sbin/munin11:40:160
429499170,16cyclictest18932-21awk10:25:190
429499170,16cyclictest18932-21awk10:25:180
429499170,16cyclictest16183-21tr11:20:130
429499170,16cyclictest14884-21tr12:15:130
429499170,16cyclictest14499-21tr08:25:130
429499170,16cyclictest10882-21sensors10:10:200
429499170,16cyclictest1085-21gdbus12:10:210
429499170,16cyclictest1085-21gdbus12:10:210
429499170,15cyclictest3979-21H222:10:210
429499170,14cyclictest111rcu_preempt11:25:160
4303991614,1cyclictest0-21swapper/211:55:152
4303991614,1cyclictest0-21swapper/210:00:182
4303991614,1cyclictest0-21swapper/209:40:212
430399160,2cyclictest16109-21df_inode07:30:162
430399160,1cyclictest0-21swapper/211:50:142
430399160,1cyclictest0-21swapper/208:05:172
430399160,15cyclictest0-21swapper/211:15:162
430399160,15cyclictest0-21swapper/210:45:162
430399160,15cyclictest0-21swapper/209:45:262
430399160,15cyclictest0-21swapper/209:05:022
4294991614,1cyclictest3985-21H222:10:210
4294991614,1cyclictest28478-21cat08:50:140
4294991614,1cyclictest0-21swapper/012:30:110
4294991614,1cyclictest0-21swapper/011:55:210
4294991614,1cyclictest0-21swapper/010:45:200
4294991614,1cyclictest0-21swapper/010:30:140
4294991614,1cyclictest0-21swapper/008:40:150
4294991613,2cyclictest3985-21H222:10:210
4294991613,2cyclictest26446-21sed11:38:590
429499160,1cyclictest0-21swapper/011:50:110
429499160,1cyclictest0-21swapper/007:35:150
429499160,15cyclictest32508-21grep10:50:170
429499160,15cyclictest31596-21http_loadtime08:55:160
429499160,15cyclictest0-21swapper/012:25:130
429499160,15cyclictest0-21swapper/011:05:140
429499160,15cyclictest0-21swapper/008:05:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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