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2026-05-28 - 17:23
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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 Thu May 28, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189999250,20cyclictest10997-21turbostat11:15:012
189799230,5cyclictest0-21swapper/011:09:380
189799230,5cyclictest0-21swapper/007:22:090
189899220,4cyclictest25621-21nfsd412:35:181
189799215,14cyclictest0-21swapper/007:55:240
189999204,15cyclictest0-21swapper/208:14:082
1899991911,4cyclictest0-21swapper/212:29:502
189999190,18cyclictest0-21swapper/208:16:332
189899192,2cyclictest16551-21nfsd408:30:171
1898991913,3cyclictest0-21swapper/109:40:411
189899190,1cyclictest0-21swapper/111:43:351
189899190,18cyclictest0-21swapper/110:14:531
1897991917,1cyclictest9-21ksoftirqd/008:40:280
1897991914,4cyclictest0-21swapper/010:25:010
189799190,17cyclictest15945-21lxd08:22:410
1899991816,1cyclictest0-21swapper/208:46:192
1899991815,2cyclictest0-21swapper/210:45:132
1899991815,1cyclictest0-21swapper/211:30:002
1899991814,3cyclictest24989-21grep09:45:012
189999181,16cyclictest14545-21snapd07:15:272
189999180,17cyclictest4061-21pzem07:10:202
189999180,17cyclictest0-21swapper/211:49:592
189999180,16cyclictest399-20systemd-journal08:00:012
1898991816,1cyclictest0-21swapper/108:10:221
1898991813,3cyclictest0-21swapper/109:20:211
189899181,2cyclictest11931-21run-parts08:25:001
189899180,17cyclictest9381-21switchtime12:05:191
189899180,17cyclictest870-21systemd-logind08:36:521
189799182,15cyclictest0-21swapper/011:45:150
1897991816,1cyclictest23870-21taskset12:34:560
1897991814,3cyclictest455-21plymouthd10:45:120
1897991814,3cyclictest16703-21latency_hist11:25:010
189799181,16cyclictest9932-21seq12:08:290
189799180,3cyclictest15739-21awk12:20:000
189799180,16cyclictest27914-21apt-key11:45:000
1899991715,1cyclictest28-21ksoftirqd/208:31:552
1899991715,1cyclictest274972sleep211:44:052
1899991714,2cyclictest32331-21if_eno111:50:152
1899991714,2cyclictest29870-21sed09:50:212
1899991714,2cyclictest21221-21expr08:40:132
1899991714,2cyclictest2069-21systemd-udevd10:08:522
1899991714,2cyclictest15201-21awk07:30:182
1899991714,2cyclictest12900-21expr08:25:132
1899991714,2cyclictest1-21systemd11:18:522
1899991714,2cyclictest1085-21gdbus07:35:192
189999171,15cyclictest31637-21nfsd408:00:192
189999170,2cyclictest6831-21nfsd409:10:172
189999170,2cyclictest6732-21latency11:05:162
189999170,2cyclictest3985-21H222:10:212
189999170,2cyclictest3983-21H222:10:212
189999170,2cyclictest26725-21open_files09:45:202
189999170,2cyclictest12653-21chrt12:11:122
189999170,1cyclictest0-21swapper/212:21:562
189999170,16cyclictest9557-21nfsd409:15:182
189999170,16cyclictest426-21systemd-udevd10:21:522
189999170,16cyclictest3989-21H222:10:212
189999170,16cyclictest32394-21sed09:55:192
189999170,16cyclictest30307-21idleruntime10:50:142
189999170,16cyclictest22215-21/usr/sbin/munin07:45:152
189999170,16cyclictest14506-21snapd10:10:272
189999170,16cyclictest13987-21grep09:25:122
189999170,16cyclictest13487-21wc09:25:002
189999170,16cyclictest12000-21munin-run08:25:012
189999170,16cyclictest11151-21nfsd410:15:182
189999170,16cyclictest1109-21/usr/sbin/munin10:00:142
189999170,16cyclictest1035-21thermald09:05:202
189899172,1cyclictest232342chrt10:36:271
189899172,1cyclictest21-21ksoftirqd/112:05:011
1898991716,1cyclictest21-21ksoftirqd/107:13:501
1898991714,2cyclictest8678-21apache_volume11:10:121
1898991714,2cyclictest7606-21timerandwakeup11:05:211
1898991714,2cyclictest3991-21H222:10:211
1898991714,2cyclictest3989-21H222:10:211
1898991714,2cyclictest30955-21ntp_states10:50:171
1898991714,2cyclictest27979-21systemctl08:50:201
1898991714,2cyclictest21845-21basename07:45:011
1898991714,2cyclictest19508-21latency_hist11:30:011
1898991714,2cyclictest15275-21sed10:25:011
1898991714,2cyclictest1-21systemd07:39:001
1898991713,3cyclictest0-21swapper/108:45:151
189899171,2cyclictest14813-21/usr/sbin/munin12:15:181
189899171,15cyclictest6960-21cpuspeed_turbos08:15:121
189899171,15cyclictest25031-21cat07:50:131
189899171,15cyclictest12701-21cpuspeed_turbos08:25:141
189899171,15cyclictest0-21swapper/107:55:171
189899170,2cyclictest3989-21H222:10:211
189899170,2cyclictest30552-21smartctl08:55:191
189899170,2cyclictest28247-21ntpq10:45:181
189899170,2cyclictest20474-21python310:35:011
189899170,2cyclictest19299-21cstates12:25:141
189899170,2cyclictest16401-21cat12:20:131
189899170,2cyclictest14545-21snapd10:25:281
189899170,2cyclictest13557-21anvil11:17:581
189899170,2cyclictest1348-21lxd11:58:431
189899170,2cyclictest10909-21https07:25:021
189899170,16cyclictest9337-21latency09:15:171
189899170,16cyclictest8104-21ls07:20:141
189899170,16cyclictest738-21awk09:00:181
189899170,16cyclictest6503-21awk07:15:181
189899170,16cyclictest3976-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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