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2026-08-29 - 09:15
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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 29, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
984799230,5cyclictest0-21swapper/223:40:002
984199210,20cyclictest843-21systemd-network19:45:410
984399204,15cyclictest0-21swapper/123:56:451
984399204,15cyclictest0-21swapper/123:56:451
984399200,0cyclictest0-21swapper/121:30:161
984199200,4cyclictest29784-21latency_hist00:30:000
984799193,15cyclictest0-21swapper/223:46:132
984799192,2cyclictest31670-21chrt22:36:082
984799192,16cyclictest9397-21chrt21:58:202
9847991917,1cyclictest0-21swapper/223:58:462
9847991917,1cyclictest0-21swapper/223:58:462
984799190,3cyclictest0-21swapper/219:43:142
984399190,18cyclictest843-21systemd-network21:37:221
984399190,18cyclictest0-21swapper/123:39:471
984399190,16cyclictest4035-21H222:10:211
984399190,16cyclictest3989-21H222:10:211
984399190,16cyclictest3989-21H222:10:211
984399190,16cyclictest3983-21H222:10:211
9841991916,2cyclictest993-21dbus-daemon20:30:200
9841991916,2cyclictest993-21dbus-daemon20:30:200
9841991916,2cyclictest3053-21systemd-logind19:50:520
9841991915,3cyclictest0-21swapper/023:22:320
984199191,3cyclictest3074-21iscsid00:09:290
984199191,17cyclictest0-21swapper/000:23:200
984199190,16cyclictest4035-21H222:10:210
984799183,15cyclictest28-21ksoftirqd/222:18:122
984799182,15cyclictest0-21swapper/223:40:132
984799182,15cyclictest0-21swapper/223:10:242
9847991816,1cyclictest0-21swapper/220:13:562
9847991816,1cyclictest0-21swapper/200:26:132
9847991815,2cyclictest28-21ksoftirqd/222:58:472
9847991815,2cyclictest10123-21taskset21:02:142
9847991814,3cyclictest3991-21H222:10:212
9847991814,2cyclictest0-21swapper/220:30:182
9847991814,2cyclictest0-21swapper/220:30:182
9847991813,3cyclictest3989-21H222:10:212
984799181,1cyclictest0-21swapper/220:38:592
984799181,16cyclictest3450-21gsd-color21:35:012
984799181,16cyclictest14684-21timerandwakeup19:15:212
984799180,3cyclictest1079-21cups-browsed23:15:212
984799180,3cyclictest10151-21lxd20:42:492
984799180,2cyclictest3991-21H222:10:212
984799180,2cyclictest3987-21H222:10:212
984799180,1cyclictest0-21swapper/223:27:542
984799180,17cyclictest24568-21expr22:25:142
984399182,1cyclictest274312sleep123:27:011
984399182,15cyclictest3985-21H222:10:211
984399182,15cyclictest3450-21gsd-color00:00:141
984399182,15cyclictest21-21ksoftirqd/119:10:421
9843991814,3cyclictest3983-21H222:10:211
9843991814,2cyclictest3987-21H222:10:211
9843991810,5cyclictest0-21swapper/121:30:011
984399180,3cyclictest1041-21anvil23:42:091
984399180,2cyclictest3991-21H222:10:211
984399180,17cyclictest4035-21H222:10:211
984399180,17cyclictest31225-21sed00:30:161
984399180,15cyclictest3987-21H222:10:211
984199182,1cyclictest26843-21pluginstate21:30:190
9841991816,1cyclictest9-21ksoftirqd/023:01:400
9841991816,1cyclictest9-21ksoftirqd/022:45:130
9841991815,2cyclictest2069-21systemd-udevd23:40:510
984199180,3cyclictest14234-21awk19:15:180
984199180,17cyclictest0-21swapper/019:30:170
984199180,16cyclictest4035-21H222:10:210
984199180,16cyclictest3989-21H222:10:210
984199180,15cyclictest3985-21H222:10:210
9847991716,1cyclictest0-21swapper/221:39:502
9847991715,1cyclictest28-21ksoftirqd/219:12:472
9847991715,1cyclictest28-21ksoftirqd/200:30:412
9847991715,1cyclictest21269-21cat21:20:192
9847991715,1cyclictest10119-21grep20:05:162
9847991715,1cyclictest0-21swapper/221:15:142
9847991715,1cyclictest0-21swapper/219:20:062
9847991714,2cyclictest3979-21H222:10:212
9847991714,2cyclictest3979-21H222:10:212
9847991714,2cyclictest3979-21H222:10:212
9847991714,2cyclictest25465-21idleruntime00:20:142
9847991714,2cyclictest21331-21cat00:15:002
9847991714,2cyclictest18765-21/usr/sbin/munin19:25:152
9847991714,2cyclictest10221-21gpgv22:00:022
9847991714,2cyclictest0-21swapper/220:25:192
9847991713,3cyclictest24849-21smtpd21:28:272
984799171,1cyclictest4035-21H222:10:212
984799171,15cyclictest32555-21taskset22:40:092
984799171,15cyclictest23006-21processes19:30:222
984799171,15cyclictest0-21swapper/222:05:212
984799170,2cyclictest27672-21/usr/sbin/munin22:30:152
984799170,2cyclictest19577-21python320:25:002
984799170,16cyclictest6666-21df_inode20:00:142
984799170,16cyclictest4714-21chrt20:53:172
984799170,16cyclictest399-20systemd-journal21:50:012
984799170,16cyclictest3989-21H222:10:212
984799170,16cyclictest3989-21H222:10:212
984799170,16cyclictest3983-21H222:10:212
984799170,16cyclictest3979-21H222:10:212
984799170,16cyclictest32416-21ntp_kernel_pll_21:40:182
984799170,16cyclictest23469-21pzem_current00:15:202
984799170,16cyclictest16523-21cat22:10:122
984799170,16cyclictest16523-21cat22:10:122
984799170,16cyclictest15814-21apache_accesses00:05:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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