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2026-08-24 - 23:09
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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 Mon Aug 24, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3049799263,18cyclictest5119-21cat11:10:010
30499992212,5cyclictest0-21swapper/208:10:192
3049999220,4cyclictest0-21swapper/212:20:152
3049999210,5cyclictest0-21swapper/212:36:402
30499992016,3cyclictest4099-21H222:10:212
30499992014,5cyclictest4035-21H222:10:212
3049899204,1cyclictest0-21swapper/107:33:171
30499991917,1cyclictest28-21ksoftirqd/211:03:592
3049999190,18cyclictest0-21swapper/210:06:312
3049999190,18cyclictest0-21swapper/210:06:302
3049899193,15cyclictest31048-21expr07:10:151
30498991917,1cyclictest21-21ksoftirqd/111:26:311
30497991917,1cyclictest0-21swapper/011:17:080
30497991914,2cyclictest3981-21H222:10:210
30497991910,8cyclictest843-21systemd-network11:27:180
3049799190,17cyclictest3058-21rs:main0
3049799190,16cyclictest4035-21H222:10:210
3049799190,16cyclictest3983-21H222:10:210
3049999186,11cyclictest0-21swapper/210:39:172
30499991816,1cyclictest0-21swapper/212:29:392
3049999181,15cyclictest3976-21H222:10:212
3049999181,15cyclictest0-21swapper/208:08:592
3049999181,15cyclictest0-21swapper/208:04:052
3049999180,3cyclictest3981-21H222:10:212
3049999180,3cyclictest0-21swapper/211:11:262
3049999180,2cyclictest4035-21H222:10:212
3049999180,2cyclictest3981-21H222:10:212
3049999180,2cyclictest3981-21H222:10:212
3049999180,2cyclictest3979-21H222:10:212
3049999180,17cyclictest7539-21latency_hist09:20:012
3049999180,17cyclictest4099-21H222:10:212
3049999180,17cyclictest0-21swapper/211:25:182
3049999180,17cyclictest0-21swapper/209:12:242
3049999180,16cyclictest3991-21H222:10:212
3049999180,16cyclictest3976-21H222:10:212
3049899182,15cyclictest26235-21http_loadtime08:55:151
30498991816,1cyclictest9550-21sh12:10:191
30498991816,1cyclictest21-21ksoftirqd/112:23:081
3049899181,2cyclictest3989-21H222:10:211
3049899181,16cyclictest3989-21H222:10:211
3049899181,16cyclictest23094-21nfsd412:35:191
3049899180,17cyclictest8169-21sed08:25:001
3049899180,17cyclictest3976-21H222:10:211
3049899180,16cyclictest4035-21H222:10:211
3049799183,1cyclictest0-21swapper/012:13:160
3049799182,15cyclictest9-21ksoftirqd/008:18:390
30497991816,1cyclictest19742-21cat10:35:210
30497991816,1cyclictest0-21swapper/009:35:580
30497991815,2cyclictest3983-21H222:10:210
3049799180,3cyclictest399-20systemd-journal08:26:090
3049799180,2cyclictest4099-21H222:10:210
3049799180,2cyclictest3991-21H222:10:210
3049799180,2cyclictest3985-21H222:10:210
3049799180,17cyclictest3991-21H222:10:210
3049799180,17cyclictest3976-21H222:10:210
3049799180,15cyclictest3985-21H222:10:210
3049799180,15cyclictest3985-21H222:10:210
30499991715,1cyclictest28-21ksoftirqd/208:33:352
30499991715,1cyclictest0-21swapper/211:45:112
30499991715,1cyclictest0-21swapper/209:36:282
30499991715,1cyclictest0-21swapper/209:25:132
30499991714,2cyclictest3989-21H222:10:212
30499991714,2cyclictest25004-21smartctl07:55:182
30499991714,2cyclictest24318-21vmstat11:40:242
30499991714,2cyclictest13702-21nfsd407:35:182
3049999170,2cyclictest993-21dbus-daemon09:05:202
3049999170,2cyclictest9720-21/usr/sbin/munin08:25:192
3049999170,2cyclictest9631-21pzem_current11:15:212
3049999170,2cyclictest3989-21H222:10:212
3049999170,2cyclictest3985-21H222:10:212
3049999170,2cyclictest3983-21H222:10:212
3049999170,2cyclictest3981-21H222:10:212
3049999170,2cyclictest11642-21apt-get10:24:592
3049999170,1cyclictest4035-21H222:10:212
3049999170,1cyclictest3985-21H222:10:212
3049999170,1cyclictest0-21swapper/211:20:162
3049999170,16cyclictest9286-21processes09:20:192
3049999170,16cyclictest4099-21H222:10:212
3049999170,16cyclictest3981-21H222:10:212
3049999170,16cyclictest23921-21cat10:45:142
3049999170,16cyclictest23565-21idleruntime08:50:172
3049999170,16cyclictest22383-21/usr/sbin/munin10:40:222
3049999170,16cyclictest21876-21munin-run11:40:012
3049999170,16cyclictest18848-21processes08:40:202
3049999170,16cyclictest13174-21/usr/sbin/munin10:25:162
3049999170,15cyclictest3979-21H222:10:212
30498991716,1cyclictest21-21ksoftirqd/109:50:141
30498991715,1cyclictest21-21ksoftirqd/109:12:571
30498991715,1cyclictest0-21swapper/109:45:351
30498991715,1cyclictest0-21swapper/107:15:161
30498991714,2cyclictest7512-21latency10:15:151
30498991714,2cyclictest4099-21H222:10:211
30498991714,2cyclictest3985-21H222:10:211
30498991714,2cyclictest3985-21H222:10:211
30498991714,2cyclictest30938-21users10:55:211
30498991714,2cyclictest2069-21systemd-udevd11:46:521
30498991714,2cyclictest20471-21ntp_offset12:30:181
30498991714,2cyclictest12290-21df08:30:161
30498991713,2cyclictest3976-21H222:10:211
3049899170,2cyclictest8713-21kernelversion09:20:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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