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2026-09-16 - 07:34
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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 Sep 16, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1764799260,19cyclictest21156-21cut20:10:192
1764799230,5cyclictest0-21swapper/200:14:332
1764699230,7cyclictest0-21swapper/121:10:431
1764599231,18cyclictest0-21swapper/020:25:180
1764699210,7cyclictest843-21systemd-network20:46:011
1764799204,1cyclictest0-21swapper/221:59:142
17647992018,1cyclictest0-21swapper/219:35:182
17647992016,3cyclictest0-21swapper/221:16:052
1764799200,19cyclictest399-20systemd-journal22:32:352
17645992018,1cyclictest0-21swapper/020:40:140
1764599200,19cyclictest880-21rs:main0
1764799193,1cyclictest0-21swapper/221:31:262
1764799192,2cyclictest21555-21nfsd422:05:172
1764799192,16cyclictest17664-21cut23:55:142
17647991917,1cyclictest0-21swapper/223:05:002
17647991917,1cyclictest0-21swapper/219:14:552
17646991917,1cyclictest0-21swapper/122:15:461
1764699191,17cyclictest0-21swapper/100:25:171
1764699190,5cyclictest0-21swapper/121:04:421
1764699190,1cyclictest0-21swapper/121:41:591
1764699190,18cyclictest0-21swapper/121:35:011
1764599193,15cyclictest0-21swapper/022:59:020
17645991917,1cyclictest0-21swapper/023:51:320
17645991916,2cyclictest18952-21cut23:55:210
1764599190,18cyclictest843-21systemd-network20:33:090
1764599190,18cyclictest0-21swapper/019:19:090
1764799183,1cyclictest0-21swapper/223:52:152
17647991816,1cyclictest9829-21timerwakeupswit00:35:222
17647991816,1cyclictest28-21ksoftirqd/223:37:262
17647991816,1cyclictest0-21swapper/221:38:392
17647991815,2cyclictest31332-21chrt21:25:222
1764799180,3cyclictest3983-21H222:10:212
1764799180,17cyclictest7170-21timerwakeupswit00:30:232
1764799180,17cyclictest18899-21ntpq22:00:212
1764699182,15cyclictest0-21swapper/120:04:111
17646991814,3cyclictest8156-21grep00:35:131
17646991814,3cyclictest22133-21anvil20:16:271
1764699181,2cyclictest18660-21grep23:55:191
1764699181,16cyclictest3450-21gsd-color20:40:011
17646991810,7cyclictest0-21swapper/122:50:181
1764699180,17cyclictest843-21systemd-network19:44:431
1764699180,17cyclictest843-21systemd-network19:44:431
1764699180,15cyclictest0-21swapper/123:05:181
1764599182,1cyclictest0-21swapper/019:59:300
1764599182,15cyclictest147562sleep020:56:200
1764599182,15cyclictest0-21swapper/022:30:270
17645991813,3cyclictest0-21swapper/020:50:130
1764599180,17cyclictest27763-21apt20:25:000
1764599180,17cyclictest26616-21tlsmgr00:28:200
1764599180,17cyclictest12756-21perf22:50:000
17647991715,1cyclictest0-21swapper/220:30:072
17647991715,1cyclictest0-21swapper/219:55:152
17647991714,2cyclictest843-21systemd-network00:04:182
17647991714,2cyclictest6574-21expr19:45:132
17647991714,2cyclictest5183-21expr22:35:122
17647991714,2cyclictest4035-21H222:10:212
17647991714,2cyclictest3707-21master20:46:142
17647991714,2cyclictest3212-21JS22:10:212
17647991714,2cyclictest31795-21expr00:20:132
17647991714,2cyclictest29832-21cut22:20:162
17647991714,2cyclictest25100-21grep00:08:082
17647991714,2cyclictest24241-21/usr/sbin/munin19:20:202
17647991714,2cyclictest14273-21sendmail_mailqu20:55:212
17647991713,3cyclictest0-21swapper/220:18:552
1764799171,15cyclictest677-21grep23:25:172
1764799171,15cyclictest5282-21http_loadtime20:40:152
1764799171,15cyclictest16697-21nfsd421:00:212
1764799170,2cyclictest31244-21latency_hist00:20:002
1764799170,2cyclictest14496-21snapd23:40:042
1764799170,16cyclictest8310-21cut22:40:142
1764799170,16cyclictest3414-21master21:51:002
1764799170,16cyclictest3414-21master21:51:002
1764799170,16cyclictest32034-21cron23:25:002
1764799170,16cyclictest26943-21expr21:20:152
1764799170,16cyclictest26616-21tlsmgr22:13:152
1764799170,16cyclictest25435-21head23:10:172
1764799170,16cyclictest18357-21cut23:00:022
1764799170,16cyclictest1474-21cpuspeed_turbos20:35:132
1764799170,15cyclictest3983-21H222:10:212
1764699172,1cyclictest0-21swapper/123:35:141
1764699172,15cyclictest4099-21H222:10:211
17646991716,1cyclictest0-21swapper/122:07:391
17646991715,1cyclictest0-21swapper/121:46:071
17646991715,1cyclictest0-21swapper/120:50:161
17646991715,1cyclictest0-21swapper/119:19:001
17646991714,2cyclictest4099-21H222:10:211
17646991714,2cyclictest30063-21grep22:20:181
17646991714,2cyclictest28892-21hddtemp_smartct20:25:171
17646991714,2cyclictest27166-21df21:20:151
17646991714,2cyclictest25307-21memory19:20:181
17646991714,2cyclictest2191-21expr22:30:131
17646991714,2cyclictest15820-21cat21:55:161
17646991714,2cyclictest1526-21lxd22:02:501
1764699171,15cyclictest3976-21H222:10:211
1764699171,15cyclictest27831-21latency_hist20:25:011
1764699171,15cyclictest26314-21expr00:10:121
1764699171,15cyclictest24437-21pzem00:05:191
1764699171,15cyclictest0-21swapper/119:15:021
1764699170,2cyclictest6486-21nfsd400:30:201
1764699170,2cyclictest17777-21timerwakeupswit22:55:251
1764699170,2cyclictest1523-21lxd20:42:501
1764699170,2cyclictest11569-21munin-run23:45:001
1764699170,1cyclictest0-21swapper/100:17:441
1764699170,16cyclictest9777-21kernelversion19:50:171
1764699170,16cyclictest3983-21H222:10:211
1764699170,16cyclictest31412-21dpkg00:20:121
1764699170,16cyclictest29857-21cpuspeed_turbos23:20:121
1764699170,16cyclictest27225-21grep19:25:151
1764699170,16cyclictest0-21swapper/122:10:171
1764599172,1cyclictest0-21swapper/021:22:520
17645991714,2cyclictest6389-21expr23:35:150
17645991714,2cyclictest5814-21chrt21:38:090
17645991714,2cyclictest32633-21grep23:25:140
17645991714,2cyclictest32018-21chrt23:24:530
17645991714,2cyclictest30904-21netstat19:30:180
17645991714,2cyclictest24581-21expr19:20:140
17645991714,2cyclictest14500-21snapd00:20:270
17645991714,2cyclictest1350-21awk19:35:170
17645991714,2cyclictest13000-21latency21:50:170
17645991714,2cyclictest13000-21latency21:50:170
17645991714,2cyclictest10277-21nvmesmart_nvme019:50:200
1764599170,2cyclictest9209-21dpkg23:40:010
1764599170,2cyclictest9057-21wc00:35:170
1764599170,2cyclictest5533-21perf23:35:000
1764599170,2cyclictest3979-21H222:10:210
1764599170,2cyclictest25374-21find00:09:000
1764599170,2cyclictest20359-21grep00:00:140
1764599170,2cyclictest14496-21snapd00:32:570
1764599170,1cyclictest0-21swapper/019:12:360
1764599170,16cyclictest8425-21needreboot20:45:190
1764599170,16cyclictest7090-21expr22:39:000
1764599170,16cyclictest5739-21perf19:45:010
1764599170,16cyclictest5739-21perf19:45:010
1764599170,16cyclictest455-21plymouthd22:00:140
1764599170,16cyclictest32738-21nvmesmart_nvme022:25:180
1764599170,16cyclictest28557-21mailstats19:25:220
1764599170,16cyclictest26991-21apache_accesses23:15:130
1764599170,16cyclictest23361-21grep22:10:150
1764599170,16cyclictest21827-21smartctl21:10:150
1764599170,16cyclictest19329-21fschecks_time23:00:120
1764599170,16cyclictest16694-21netstat21:00:220
1764599170,16cyclictest11032-21wc21:45:210
1764599170,16cyclictest0-21swapper/020:38:590
17647991614,1cyclictest9389-21cpuspeed_turbos21:45:132
17647991614,1cyclictest0-21swapper/223:35:002
17647991614,1cyclictest0-21swapper/223:15:222
17647991614,1cyclictest0-21swapper/223:05:132
17647991614,1cyclictest0-21swapper/220:50:172
17647991614,1cyclictest0-21swapper/220:20:162
17647991614,1cyclictest0-21swapper/220:05:152
17647991614,1cyclictest0-21swapper/220:00:142
17647991614,1cyclictest0-21swapper/219:50:142
17647991614,1cyclictest0-21swapper/219:30:172
17647991614,1cyclictest0-21swapper/200:25:162
1764799160,1cyclictest3579-21expr19:40:142
1764799160,1cyclictest3579-21expr19:40:142
1764799160,1cyclictest23018-21timerwakeupswit21:10:232
1764799160,1cyclictest0-21swapper/222:55:012
1764799160,15cyclictest32409-21sed22:25:162
1764799160,15cyclictest0-21swapper/222:15:112
1764799160,15cyclictest0-21swapper/221:40:142
1764799160,15cyclictest0-21swapper/220:25:192
1764799160,15cyclictest0-21swapper/219:25:172
17646991614,1cyclictest12706-21/usr/sbin/munin20:55:211
17646991614,1cyclictest0-21swapper/123:50:191
17646991614,1cyclictest0-21swapper/123:30:151
17646991614,1cyclictest0-21swapper/123:10:211
17646991614,1cyclictest0-21swapper/123:00:201
17646991614,1cyclictest0-21swapper/122:40:131
17646991614,1cyclictest0-21swapper/122:25:101
17646991614,1cyclictest0-21swapper/121:50:141
17646991614,1cyclictest0-21swapper/121:50:141
17646991613,2cyclictest21752-21mailstats00:00:211
17646991613,2cyclictest19996-21cpu20:10:151
1764699160,1cyclictest27382-21expr23:15:141
1764699160,1cyclictest170532chrt20:05:031
1764699160,1cyclictest0-21swapper/121:20:011
1764699160,1cyclictest0-21swapper/119:55:191
1764699160,1cyclictest0-21swapper/119:30:131
1764699160,15cyclictest4789-21apache_accesses22:35:101
1764699160,15cyclictest31253-21expr20:30:141
1764699160,15cyclictest29792-21apache_accesses21:25:131
1764699160,15cyclictest0-21swapper/123:45:151
1764699160,15cyclictest0-21swapper/122:45:171
1764699160,15cyclictest0-21swapper/121:05:141
17645991614,1cyclictest12032-21cpuspeed_turbos23:45:140
17645991614,1cyclictest0-21swapper/021:55:140
17645991614,1cyclictest0-21swapper/021:30:140
17645991614,1cyclictest0-21swapper/021:25:180
17645991614,1cyclictest0-21swapper/021:05:100
17645991614,1cyclictest0-21swapper/020:16:590
17645991614,1cyclictest0-21swapper/020:00:160
1764599160,2cyclictest24781-21latency21:15:170
1764599160,1cyclictest0-21swapper/022:15:160
1764599160,15cyclictest6687-21cpuspeed_turbos21:40:130
1764599160,15cyclictest25933-21taskset00:10:120
1764599160,15cyclictest0-21swapper/023:05:120
1764599160,15cyclictest0-21swapper/022:50:180
1764599160,15cyclictest0-21swapper/022:40:120
1764599160,15cyclictest0-21swapper/022:05:160
1764599160,15cyclictest0-21swapper/020:10:150
1764599160,15cyclictest0-21swapper/020:05:150
1764599160,15cyclictest0-21swapper/019:45:110
1764599160,15cyclictest0-21swapper/000:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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