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2026-08-22 - 18:43
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Aug 22, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17420992516,9cyclictest21-21ksoftirqd/108:46:211
17419992515,0cyclictest0-21swapper/008:45:150
1742199230,5cyclictest0-21swapper/207:14:062
1742099230,5cyclictest0-21swapper/108:41:191
17419992321,1cyclictest0-21swapper/008:30:010
1741999220,22cyclictest0-21swapper/007:45:160
1741999220,1cyclictest0-21swapper/007:24:290
1741999220,18cyclictest0-21swapper/010:10:080
1742199213,16cyclictest870-21systemd-logind12:28:512
1742199210,3cyclictest0-21swapper/207:20:232
17420992118,2cyclictest2872-21systemd-logind08:54:521
1741999215,15cyclictest9-21ksoftirqd/009:54:370
17421992016,3cyclictest0-21swapper/211:58:542
1742099204,15cyclictest0-21swapper/109:45:101
17420992018,1cyclictest3991-21H222:10:211
1742099200,19cyclictest843-21systemd-network08:30:441
1741999204,15cyclictest0-21swapper/011:55:160
1741999203,16cyclictest0-21swapper/007:27:420
17419992016,3cyclictest0-21swapper/012:05:220
17419992011,8cyclictest0-21swapper/008:55:160
1742199193,1cyclictest10797-21missed_timers09:45:182
1742199193,15cyclictest0-21swapper/208:58:102
17421991916,2cyclictest1255-21missed_timers12:20:182
1742199191,2cyclictest3985-21H222:10:212
1742199191,16cyclictest0-21swapper/208:50:142
1742199190,18cyclictest426-21systemd-udevd10:26:522
1742199190,16cyclictest4099-21H222:10:212
1742199190,16cyclictest3987-21H222:10:212
1742199190,16cyclictest1169-21cut09:30:142
17420991919,0cyclictest0-21swapper/111:07:311
1742099190,1cyclictest0-21swapper/111:20:571
1741999193,15cyclictest25914-21if_eno109:15:160
1741999192,16cyclictest0-21swapper/009:43:330
1741999192,16cyclictest0-21swapper/009:43:330
17419991917,1cyclictest0-21swapper/011:49:070
17419991917,1cyclictest0-21swapper/007:18:360
17419991916,2cyclictest2216-21chrt10:25:340
17419991916,2cyclictest1147-21chrt11:22:520
17419991916,1cyclictest0-21swapper/011:26:250
1741999190,2cyclictest3991-21H222:10:210
1741999190,17cyclictest6271-21cpuspeed_turbos10:35:140
17421991817,1cyclictest0-21swapper/208:48:012
17421991816,1cyclictest9913-21cat12:35:142
17421991816,1cyclictest28-21ksoftirqd/209:18:562
17421991816,1cyclictest0-21swapper/212:00:192
17421991815,2cyclictest3989-21H222:10:212
17421991815,2cyclictest3979-21H222:10:212
17421991815,2cyclictest32432-21cstates07:35:152
1742199181,16cyclictest25059-21kernelversion12:05:172
1742199181,16cyclictest11838-21ntpq11:40:182
1742199180,3cyclictest3985-21H222:10:212
1742199180,2cyclictest4099-21H222:10:212
1742199180,17cyclictest870-21systemd-logind10:38:522
1742199180,17cyclictest3983-21H222:10:212
1742199180,17cyclictest0-21swapper/209:50:102
1742099183,1cyclictest0-21swapper/108:55:171
1742099182,15cyclictest22260-21sshd11:00:551
1742099182,15cyclictest0-21swapper/112:32:011
17420991814,3cyclictest3979-21H222:10:211
1742099180,3cyclictest3991-21H222:10:211
1742099180,3cyclictest14505-21snapd07:12:311
1742099180,2cyclictest4099-21H222:10:211
1742099180,2cyclictest3979-21H222:10:211
1742099180,15cyclictest3991-21H222:10:211
1741999182,2cyclictest497-21mailstats08:30:210
1741999182,1cyclictest41722chrt08:36:490
1741999182,15cyclictest6535-21cat11:30:210
1741999182,15cyclictest19036-21fw_packets10:00:160
1741999182,15cyclictest0-21swapper/011:00:140
17419991816,1cyclictest4513-21grep10:30:190
17419991815,2cyclictest29038-21needreboot09:20:180
17419991815,2cyclictest2590-21sed12:25:000
17419991815,2cyclictest22734-21cut12:00:180
17419991815,2cyclictest12315-21latency07:55:170
17419991815,2cyclictest12315-21latency07:55:170
17419991815,1cyclictest0-21swapper/011:20:000
17419991814,3cyclictest0-21swapper/009:35:140
17419991813,4cyclictest32056-21wc10:24:590
1741999181,2cyclictest8637-21cat07:50:130
1741999180,3cyclictest22190-21apt-get08:12:310
1741999180,17cyclictest19672-21perf08:10:010
1741999180,17cyclictest13197-21perf08:55:010
1741999180,16cyclictest3983-21H222:10:210
1741999180,16cyclictest3979-21H222:10:210
1741999180,16cyclictest20539-21python307:15:010
17421991715,1cyclictest8653-21switchtime09:40:232
17421991715,1cyclictest8653-21switchtime09:40:232
17421991715,1cyclictest28-21ksoftirqd/208:29:172
17421991715,1cyclictest21652-21ntp_kernel_pll_11:00:182
17421991714,2cyclictest9372-21awk07:50:162
17421991714,2cyclictest7350-21/usr/sbin/munin07:45:202
17421991714,2cyclictest5847-21timerandwakeup09:35:202
17421991714,2cyclictest3983-21H222:10:212
17421991714,2cyclictest3981-21H222:10:212
17421991714,2cyclictest3981-21H222:10:212
17421991714,2cyclictest31640-21cstates08:30:142
17421991714,2cyclictest11260-21postgres07:55:112
17421991714,2cyclictest11260-21postgres07:55:112
17421991714,1cyclictest0-21swapper/209:10:192
17421991714,1cyclictest0-21swapper/207:29:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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