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2026-08-08 - 17:12
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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 Aug 08, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
365299230,22cyclictest0-21swapper/209:40:182
365299220,21cyclictest843-21systemd-network09:34:582
3648992219,2cyclictest4262-21grep10:00:171
3648992113,0cyclictest0-21swapper/107:47:551
364899203,16cyclictest7603-21fschecks_count12:00:161
364899203,16cyclictest7603-21fschecks_count12:00:151
364899203,16cyclictest11648-21cat08:20:181
364899202,3cyclictest24253-21expr12:30:141
364899200,19cyclictest22352-21tr08:40:141
364899200,18cyclictest399-20systemd-journal10:35:011
364899200,16cyclictest3979-21H222:10:211
3647992017,2cyclictest20661-21fschecks_count10:30:150
3652991917,1cyclictest28-21ksoftirqd/211:45:572
365299190,3cyclictest5474-21python310:05:002
365299190,2cyclictest17918-21df10:25:162
365299190,18cyclictest28781-21perf09:50:012
365299190,18cyclictest0-21swapper/208:35:232
364899192,2cyclictest17497-21cat08:30:171
364899192,16cyclictest4237-21cut07:10:131
364899192,16cyclictest25001-21awk09:40:191
3648991916,2cyclictest15215-21tr11:15:201
3648991915,3cyclictest7404-21grep07:15:161
3648991915,3cyclictest6171-21dpkg10:05:011
3648991915,3cyclictest399-20systemd-journal09:45:011
3648991915,3cyclictest32661-21cron09:00:041
3648991915,3cyclictest30830-21awk09:50:181
3648991915,3cyclictest26008-21gpgv10:40:001
3648991915,3cyclictest14986-21munin-run09:25:011
364899191,17cyclictest25737-21munin-run10:40:011
364899191,17cyclictest20933-21cstates07:40:161
364899191,17cyclictest18798-21ps10:25:211
364899191,17cyclictest12074-21pidof12:09:011
364899191,16cyclictest28730-21wc07:55:021
364899190,5cyclictest0-21swapper/112:10:141
3647991916,2cyclictest2198-21seq09:58:290
3647991915,3cyclictest0-21swapper/011:23:470
3647991912,5cyclictest0-21swapper/008:55:060
364799190,2cyclictest3983-21H222:10:210
364799190,2cyclictest3983-21H222:10:210
364799190,17cyclictest16952-21awk10:25:010
365299182,2cyclictest7029-21sed09:10:002
3652991814,3cyclictest17354-21perf07:35:022
365299181,16cyclictest27669-21systemctl07:50:202
365299180,17cyclictest3991-21H222:10:212
365299180,17cyclictest22345-21tr08:40:142
365299180,16cyclictest3981-21H222:10:212
364899182,2cyclictest32306-21sed08:00:151
3648991816,1cyclictest30557-21gpg-connect-age11:45:001
3648991815,2cyclictest29499-21expr10:45:141
3648991815,2cyclictest25985-21awk11:35:191
3648991815,2cyclictest25985-21awk11:35:191
3648991815,2cyclictest18872-21munin-plugin-st11:25:011
3648991815,2cyclictest0-21swapper/109:40:011
3648991814,3cyclictest0-21swapper/112:25:191
3648991814,3cyclictest0-21swapper/110:10:141
3648991814,3cyclictest0-21swapper/109:30:001
364899181,2cyclictest8367-21nfsd409:10:191
364899181,2cyclictest4542-21cat11:55:161
364899181,2cyclictest29812-21chrt08:53:351
364899181,2cyclictest13172-21awk07:25:161
364899181,16cyclictest897-21sed09:55:171
364899181,16cyclictest201rcuc/109:08:591
364899181,16cyclictest19422-21awk12:20:201
364899181,16cyclictest1705-21expr11:50:151
364899181,16cyclictest0-21swapper/108:15:011
364899181,16cyclictest0-21swapper/108:15:001
364899180,17cyclictest0-21swapper/110:50:161
3647991816,1cyclictest9-21ksoftirqd/010:02:020
3647991814,2cyclictest28860-21munin-run10:45:010
364799181,3cyclictest0-21swapper/007:20:150
364799181,2cyclictest3991-21H222:10:210
364799180,3cyclictest14500-21snapd10:10:580
364799180,2cyclictest3987-21H222:10:210
364799180,15cyclictest3987-21H222:10:210
364799180,0cyclictest0-21swapper/011:45:120
3652991715,1cyclictest0-21swapper/208:20:182
3652991714,2cyclictest3989-21H222:10:212
3652991714,2cyclictest3979-21H222:10:212
3652991714,2cyclictest307-21python309:00:012
3652991714,2cyclictest27314-21munin-run11:40:012
3652991714,2cyclictest27314-21munin-run11:40:002
3652991714,2cyclictest23691-21kernelversion10:35:182
3652991714,2cyclictest23687-21expr07:45:142
3652991714,2cyclictest14506-21snapd08:10:052
3652991714,2cyclictest14506-21snapd08:10:052
3652991714,2cyclictest14500-21snapd12:27:572
3652991714,2cyclictest1448-21cat09:00:142
365299170,2cyclictest4099-21H222:10:212
365299170,2cyclictest3991-21H222:10:212
365299170,2cyclictest3985-21H222:10:212
365299170,2cyclictest3985-21H222:10:212
365299170,2cyclictest3983-21H222:10:212
365299170,2cyclictest3979-21H222:10:212
365299170,2cyclictest3979-21H222:10:212
365299170,2cyclictest26992-21irqstats10:40:162
365299170,2cyclictest2404-21expr08:05:152
365299170,2cyclictest13495-21nfsd407:25:192
365299170,2cyclictest11945-21/usr/sbin/munin11:10:172
365299170,16cyclictest4099-21H222:10:212
365299170,16cyclictest3985-21H222:10:212
365299170,16cyclictest23298-21ls07:45:002
365299170,16cyclictest1703-21cupsd09:13:362
365299170,16cyclictest1377-21lxd12:34:432
365299170,16cyclictest11186-21switchtime07:20:222
365299170,16cyclictest10543-21cron11:09:012
364899172,15cyclictest0-21swapper/107:58:001
3648991715,1cyclictest26743-21grep12:35:141
3648991715,1cyclictest0-21swapper/110:20:121
3648991715,1cyclictest0-21swapper/108:05:201
3648991715,1cyclictest0-21swapper/107:30:211
3648991714,2cyclictest3989-21H222:10:211
3648991714,2cyclictest0-21swapper/112:15:151
364899171,15cyclictest0-21swapper/110:55:181
364899171,15cyclictest0-21swapper/107:35:151
364899170,2cyclictest29465-21sort11:40:201
364899170,2cyclictest0-21swapper/111:04:591
364899170,16cyclictest8659-21expr11:05:151
364899170,16cyclictest19632-21expr08:35:141
364899170,16cyclictest157682chrt08:26:051
364899170,16cyclictest0-21swapper/111:30:141
364899170,16cyclictest0-21swapper/111:25:221
364899170,16cyclictest0-21swapper/108:59:571
364799172,1cyclictest0-21swapper/009:26:320
3647991715,1cyclictest8367-21nfsd409:10:190
3647991715,1cyclictest0-21swapper/007:15:150
3647991714,2cyclictest998-21dpkg09:00:020
3647991714,2cyclictest8315-21cat08:15:150
3647991714,2cyclictest3991-21H222:10:210
3647991714,2cyclictest19850-21expr08:35:140
3647991714,2cyclictest13021-21mv08:25:000
3647991714,2cyclictest1079-21cups-browsed08:05:210
3647991713,3cyclictest0-21swapper/007:55:400
3647991712,4cyclictest0-21swapper/011:28:290
364799171,15cyclictest11940-21chrt09:16:490
364799170,2cyclictest4149-21cpuspeed_turbos07:10:130
364799170,2cyclictest399-20systemd-journal08:29:560
364799170,2cyclictest3987-21H222:10:210
364799170,1cyclictest3991-21H222:10:210
364799170,1cyclictest3983-21H222:10:210
364799170,1cyclictest0-21swapper/010:36:060
364799170,16cyclictest4099-21H222:10:210
364799170,16cyclictest3991-21H222:10:210
364799170,16cyclictest3989-21H222:10:210
364799170,16cyclictest3989-21H222:10:210
364799170,16cyclictest3981-21H222:10:210
364799170,16cyclictest3053-21systemd-logind11:32:520
364799170,16cyclictest28847-21http09:50:010
364799170,16cyclictest27793-21cpuspeed_turbos08:50:130
364799170,16cyclictest19978-21timerwakeupswit12:20:230
364799170,16cyclictest15460-21cpuspeed_turbos12:15:160
364799170,16cyclictest1377-21lxd11:06:420
364799170,16cyclictest13181-21df12:10:150
364799170,16cyclictest11317-21sensors12:05:220
364799170,15cyclictest0-21swapper/011:10:200
3652991614,1cyclictest0-21swapper/212:20:172
3652991614,1cyclictest0-21swapper/212:10:132
3652991614,1cyclictest0-21swapper/211:55:162
3652991614,1cyclictest0-21swapper/211:00:142
3652991614,1cyclictest0-21swapper/210:20:122
3652991614,1cyclictest0-21swapper/210:10:152
3652991614,1cyclictest0-21swapper/208:50:162
3652991614,1cyclictest0-21swapper/208:15:162
3652991613,2cyclictest29544-21which07:55:142
365299160,2cyclictest1486-21cat11:50:152
365299160,1cyclictest16560-21apt-get11:20:142
365299160,1cyclictest12316-21cat10:15:172
365299160,1cyclictest0-21swapper/209:15:142
365299160,1cyclictest0-21swapper/208:45:192
365299160,1cyclictest0-21swapper/208:25:192
365299160,15cyclictest9504-21latency_hist12:05:012
365299160,15cyclictest9504-21latency_hist12:05:012
365299160,15cyclictest19978-21/usr/sbin/munin11:25:152
365299160,15cyclictest15009-21nfsd411:15:202
365299160,15cyclictest0-21swapper/211:30:152
365299160,15cyclictest0-21swapper/210:55:152
365299160,15cyclictest0-21swapper/210:45:182
365299160,15cyclictest0-21swapper/210:05:022
365299160,15cyclictest0-21swapper/209:55:152
365299160,15cyclictest0-21swapper/209:50:012
365299160,15cyclictest0-21swapper/209:40:012
3648991615,1cyclictest0-21swapper/108:45:051
3648991614,1cyclictest0-21swapper/111:10:131
3648991614,1cyclictest0-21swapper/107:20:161
364899160,15cyclictest7999-21cpu08:15:151
364899160,15cyclictest0-21swapper/109:30:141
3647991614,1cyclictest9-21ksoftirqd/008:45:500
3647991614,1cyclictest0-21swapper/012:00:130
3647991614,1cyclictest0-21swapper/012:00:120
3647991614,1cyclictest0-21swapper/011:15:150
3647991614,1cyclictest0-21swapper/011:01:340
3647991614,1cyclictest0-21swapper/010:55:140
3647991614,1cyclictest0-21swapper/009:40:230
3647991614,1cyclictest0-21swapper/008:10:180
3647991614,1cyclictest0-21swapper/008:10:180
3647991614,1cyclictest0-21swapper/007:35:090
3647991613,2cyclictest3976-21H222:10:210
3647991613,2cyclictest0-21swapper/011:50:140
364799160,2cyclictest21896-21cat09:35:170
364799160,1cyclictest0-21swapper/010:46:100
364799160,15cyclictest21492-21fschecks_time12:25:160
364799160,15cyclictest0-21swapper/011:40:130
364799160,15cyclictest0-21swapper/009:50:130
364799160,15cyclictest0-21swapper/009:30:150
364799160,15cyclictest0-21swapper/008:00:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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