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2026-08-26 - 07:01
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Aug 26, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
940699370,36cyclictest0-21swapper/121:14:081
9411992422,1cyclictest271rcuc/222:50:012
9411992416,0cyclictest28-21ksoftirqd/223:11:512
9411992018,1cyclictest271rcuc/222:22:512
941199193,15cyclictest0-21swapper/219:39:162
9411991917,1cyclictest28-21ksoftirqd/222:50:012
9411991917,1cyclictest271rcuc/219:57:502
9411991917,1cyclictest0-21swapper/200:02:582
941199190,3cyclictest0-21swapper/222:30:192
941199190,18cyclictest0-21swapper/222:41:282
941199190,16cyclictest3976-21H222:10:212
940699193,15cyclictest0-21swapper/121:53:291
940699192,16cyclictest0-21swapper/120:44:261
9406991916,2cyclictest3989-21H222:10:211
9406991916,2cyclictest14495-21snapd19:40:281
9406991915,3cyclictest3450-21gsd-color22:00:181
9406991915,3cyclictest0-21swapper/123:15:471
9406991914,4cyclictest3991-21H222:10:211
9406991914,3cyclictest3985-21H222:10:211
9406991914,3cyclictest3985-21H222:10:211
940699191,15cyclictest0-21swapper/120:59:231
940699190,17cyclictest22475-21cpuspeed_turbos23:20:141
940699190,17cyclictest22475-21cpuspeed_turbos23:20:141
940599193,15cyclictest0-21swapper/023:19:020
9405991917,1cyclictest9-21ksoftirqd/023:06:370
9405991917,1cyclictest0-21swapper/023:39:420
9405991917,1cyclictest0-21swapper/019:57:390
940599190,2cyclictest3979-21H222:10:210
940599190,18cyclictest19632-21nfsd400:10:180
940599190,18cyclictest19632-21nfsd400:10:180
940599190,16cyclictest3991-21H222:10:210
940599190,16cyclictest3989-21H222:10:210
940599190,16cyclictest3989-21H222:10:210
940599190,16cyclictest3976-21H222:10:210
941199182,15cyclictest271rcuc/223:30:002
9411991816,1cyclictest28-21ksoftirqd/221:04:562
9411991816,1cyclictest28-21ksoftirqd/200:20:162
9411991815,2cyclictest28-21ksoftirqd/221:15:172
941199180,2cyclictest3991-21H222:10:212
941199180,2cyclictest3991-21H222:10:212
941199180,17cyclictest3989-21H222:10:212
941199180,17cyclictest3987-21H222:10:212
941199180,16cyclictest3979-21H222:10:212
941199180,16cyclictest3979-21H222:10:212
941199180,15cyclictest0-21swapper/220:35:382
9406991816,1cyclictest0-21swapper/123:07:221
9406991815,2cyclictest29105-21chrt00:25:271
9406991815,2cyclictest2462-21chrt00:38:011
9406991814,3cyclictest3987-21H222:10:211
940699180,2cyclictest3981-21H222:10:211
940699180,17cyclictest3979-21H222:10:211
940699180,17cyclictest0-21swapper/119:15:011
940699180,16cyclictest3981-21H222:10:211
9405991816,1cyclictest9-21ksoftirqd/020:58:070
9405991816,1cyclictest0-21swapper/022:34:250
9405991815,2cyclictest0-21swapper/020:00:200
9405991814,3cyclictest0-21swapper/021:20:220
940599181,16cyclictest2297-21nfsd423:40:180
940599180,3cyclictest25296-21apt-config20:35:010
940599180,2cyclictest3991-21H222:10:210
940599180,2cyclictest3991-21H222:10:210
940599180,1cyclictest3989-21H222:10:210
940599180,15cyclictest3989-21H222:10:210
940599180,15cyclictest3981-21H222:10:210
940599180,15cyclictest3976-21H222:10:210
940599180,15cyclictest0-21swapper/019:40:150
941199172,1cyclictest271rcuc/221:35:182
9411991716,1cyclictest28-21ksoftirqd/220:00:172
9411991716,1cyclictest271rcuc/221:40:132
9411991715,1cyclictest28-21ksoftirqd/220:20:132
9411991715,1cyclictest271rcuc/223:40:132
9411991715,1cyclictest271rcuc/221:10:192
9411991715,1cyclictest271rcuc/220:40:242
9411991715,1cyclictest271rcuc/219:50:142
9411991715,1cyclictest0-21swapper/223:00:422
9411991715,1cyclictest0-21swapper/220:05:212
9411991714,2cyclictest3981-21H222:10:212
9411991714,2cyclictest3976-21H222:10:212
9411991714,2cyclictest30626-21taskset22:38:132
9411991714,2cyclictest0-21swapper/223:35:152
941199171,1cyclictest271rcuc/220:45:162
941199171,1cyclictest271rcuc/220:45:162
941199171,15cyclictest28-21ksoftirqd/221:25:182
941199171,15cyclictest28-21ksoftirqd/221:05:222
941199171,15cyclictest271rcuc/220:25:292
941199170,2cyclictest3983-21H222:10:212
941199170,2cyclictest29875-21chrt19:45:122
941199170,2cyclictest28614-21kernelversion23:30:192
941199170,2cyclictest15488-21mailstats23:05:182
941199170,2cyclictest10421-21chrt22:56:302
941199170,16cyclictest7543-21pzem_energy21:55:192
941199170,16cyclictest3981-21H222:10:212
941199170,16cyclictest31279-21nvmesmart_nvme000:30:202
941199170,16cyclictest20840-21grep23:15:182
941199170,16cyclictest20797-21dpkg19:30:012
941199170,16cyclictest20797-21dpkg19:30:002
941199170,16cyclictest20095-21switchtime00:10:212
941199170,16cyclictest20095-21switchtime00:10:202
941199170,16cyclictest14499-21snapd20:30:282
941199170,16cyclictest1316-21/usr/sbin/munin00:35:182
940699172,14cyclictest0-21swapper/100:32:141
9406991715,1cyclictest0-21swapper/121:15:221
9406991714,2cyclictest8070-21sshd20:00:491
9406991714,2cyclictest5368-21apt-config22:50:011
9406991714,2cyclictest3991-21H222:10:211
9406991714,2cyclictest3989-21H222:10:211
9406991714,2cyclictest3987-21H222:10:211
9406991714,2cyclictest3981-21H222:10:211
9406991714,2cyclictest28004-21lxd21:40:511
9406991714,2cyclictest1841-21dpkg20:50:141
9406991714,2cyclictest0-21swapper/121:00:191
9406991712,4cyclictest10040-21grep20:05:181
940699171,1cyclictest0-21swapper/120:40:011
940699171,15cyclictest7187-21chrt23:50:121
940699171,15cyclictest11592-21expr21:05:271
940699171,15cyclictest0-21swapper/121:55:171
940699170,2cyclictest9297-21kernelversion22:55:171
940699170,2cyclictest3991-21H222:10:211
940699170,2cyclictest21158-21awk22:20:161
940699170,2cyclictest18836-21switchtime20:20:201
940699170,2cyclictest13301-21sendmail_mailtr20:10:221
940699170,2cyclictest12969-21expr00:00:151
940699170,16cyclictest846-21fschecks_time19:50:141
940699170,16cyclictest455-21plymouthd22:25:011
940699170,16cyclictest3989-21H222:10:211
940699170,16cyclictest3989-21H222:10:211
940699170,16cyclictest31547-21expr20:45:151
940699170,16cyclictest31547-21expr20:45:151
940699170,16cyclictest25222-21sed21:30:171
940699170,16cyclictest23358-21smartctl20:30:161
940699170,16cyclictest21767-21expr21:25:141
940699170,16cyclictest17772-21postgres19:23:031
940699170,16cyclictest17486-21expr22:15:151
940699170,16cyclictest14001-21cron20:15:011
940699170,16cyclictest1348-21lxd22:10:501
940699170,16cyclictest1079-21cups-browsed19:35:221
940699170,16cyclictest10368-21cat23:55:131
9405991715,1cyclictest0-21swapper/000:30:120
9405991714,2cyclictest8802-21/usr/sbin/munin20:05:210
9405991714,2cyclictest602-21ls19:50:130
9405991714,2cyclictest4099-21H222:10:210
9405991714,2cyclictest25111-21fschecks_time00:20:160
9405991714,2cyclictest13144-21expr00:00:140
9405991714,2cyclictest12748-21sed19:15:020
9405991713,4cyclictest0-21swapper/020:39:530
940599171,15cyclictest9-21ksoftirqd/000:37:170
940599171,15cyclictest0-21swapper/023:30:180
940599170,2cyclictest6466-21cat21:55:120
940599170,2cyclictest3991-21H222:10:210
940599170,2cyclictest3985-21H222:10:210
940599170,2cyclictest3985-21H222:10:210
940599170,2cyclictest3983-21H222:10:210
940599170,2cyclictest3983-21H222:10:210
940599170,2cyclictest24954-21idleruntime19:35:150
940599170,2cyclictest24575-21wc22:25:220
940599170,2cyclictest14640-21cpuspeed_turbos22:10:140
940599170,2cyclictest11163-21/usr/sbin/munin19:10:200
940599170,16cyclictest9408-21lxd20:40:510
940599170,16cyclictest5195-21https22:50:000
940599170,16cyclictest4099-21H222:10:210
940599170,16cyclictest4099-21H222:10:210
940599170,16cyclictest3989-21H222:10:210
940599170,16cyclictest3985-21H222:10:210
940599170,16cyclictest29827-21ntp_kernel_err22:35:180
940599170,16cyclictest24714-21sed23:25:010
940599170,16cyclictest24714-21sed23:25:000
940599170,16cyclictest24015-21perf00:20:000
940599170,16cyclictest22006-21chrt20:27:070
940599170,16cyclictest20449-21taskset19:27:250
940599170,16cyclictest20449-21taskset19:27:250
940599170,16cyclictest18756-21find20:20:210
940599170,16cyclictest1526-21lxd23:28:360
940599170,16cyclictest1522-21lxd23:46:360
940599170,16cyclictest1522-21lxd23:46:350
940599170,16cyclictest1406-21perf20:50:000
940599170,16cyclictest1406-21perf20:50:000
940599170,15cyclictest3983-21H222:10:210
9411991615,0cyclictest0-21swapper/200:05:142
9411991614,1cyclictest271rcuc/223:20:142
9411991614,1cyclictest271rcuc/223:20:132
9411991614,1cyclictest0-21swapper/222:10:152
9411991614,1cyclictest0-21swapper/221:50:142
9411991614,1cyclictest0-21swapper/220:50:182
9411991614,1cyclictest0-21swapper/220:15:182
9411991614,1cyclictest0-21swapper/220:10:172
9411991614,1cyclictest0-21swapper/219:40:132
9411991613,2cyclictest3414-21master22:03:362
941199161,1cyclictest28-21ksoftirqd/219:20:132
941199160,15cyclictest3981-21H222:10:212
941199160,15cyclictest1114-21lldpd19:10:112
941199160,15cyclictest0-21swapper/221:30:152
941199160,15cyclictest0-21swapper/221:20:152
941199160,15cyclictest0-21swapper/219:15:022
9406991614,1cyclictest0-21swapper/123:14:591
9406991613,2cyclictest27824-21tr23:30:151
940699160,1cyclictest0-21swapper/123:35:211
940699160,15cyclictest5465-21trivial-rewrite19:57:391
940699160,15cyclictest19033-21fschecks_time19:25:161
940699160,15cyclictest19033-21fschecks_time19:25:161
940699160,15cyclictest0-21swapper/123:25:161
940699160,15cyclictest0-21swapper/119:48:031
940699160,15cyclictest0-21swapper/119:30:141
940699160,15cyclictest0-21swapper/100:15:151
9405991614,1cyclictest0-21swapper/021:00:130
9405991614,1cyclictest0-21swapper/020:10:160
9405991613,2cyclictest15835-21ntp_offset20:15:200
940599160,15cyclictest9372-21latency22:55:180
940599160,15cyclictest2207-21expr20:50:190
940599160,15cyclictest11328-21sort21:05:260
940599160,15cyclictest0-21swapper/021:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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