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2026-08-30 - 09:07
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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 Sun Aug 30, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12843993331,2cyclictest0-21swapper/121:20:011
1284399262,15cyclictest28526-21latency_hist23:24:591
12844992219,2cyclictest29609-21latency_hist19:40:012
1284399214,11cyclictest0-21swapper/100:32:381
1284499202,13cyclictest19541-21gpgv20:20:012
1284299204,9cyclictest22582-21python323:15:000
1284299200,18cyclictest20842-21fgrep00:05:210
1284499193,15cyclictest0-21swapper/222:30:042
1284499192,2cyclictest9929-21nfsd420:00:172
1284499192,2cyclictest3983-21H222:10:212
1284499192,16cyclictest3985-21H222:10:212
12844991917,1cyclictest28-21ksoftirqd/222:02:442
12844991915,3cyclictest0-21swapper/219:26:472
12844991914,4cyclictest23631-21nfsd400:10:152
1284499190,4cyclictest11676-21fschecks_count23:50:132
1284399199,9cyclictest870-21systemd-logind20:54:511
1284399192,2cyclictest4099-21H222:10:211
12843991917,1cyclictest0-21swapper/100:01:251
12843991916,2cyclictest0-21swapper/122:55:401
1284399191,2cyclictest3987-21H222:10:211
1284399190,2cyclictest3989-21H222:10:211
1284399190,1cyclictest0-21swapper/119:13:241
1284399190,18cyclictest870-21systemd-logind23:48:521
1284399190,16cyclictest3987-21H222:10:211
12842991917,1cyclictest0-21swapper/019:19:160
1284299191,3cyclictest0-21swapper/022:20:180
1284499182,15cyclictest28-21ksoftirqd/220:32:422
12844991816,1cyclictest0-21swapper/223:28:162
12844991814,3cyclictest455-21plymouthd23:05:172
12844991814,3cyclictest3989-21H222:10:212
1284499180,2cyclictest3987-21H222:10:212
1284499180,17cyclictest7945-21debian-sa123:45:002
1284499180,16cyclictest4099-21H222:10:212
1284499180,15cyclictest22108-21cat00:10:002
1284399182,15cyclictest21-21ksoftirqd/100:27:161
12843991816,1cyclictest21-21ksoftirqd/123:57:441
12843991815,2cyclictest4099-21H222:10:211
12843991815,2cyclictest28083-21nfsd419:35:181
12843991814,3cyclictest3985-21H222:10:211
1284399181,16cyclictest0-21swapper/122:15:321
1284399180,2cyclictest4099-21H222:10:211
1284399180,2cyclictest3976-21H222:10:211
1284399180,17cyclictest5679-21nfsd421:45:191
1284399180,17cyclictest3983-21H222:10:211
1284399180,17cyclictest30367-21turbostat21:35:001
1284399180,17cyclictest1956-21anvil20:46:041
1284299182,15cyclictest271232chrt00:17:220
1284299182,15cyclictest271232chrt00:17:210
1284299182,15cyclictest0-21swapper/000:22:550
12842991816,1cyclictest9-21ksoftirqd/000:35:070
12842991816,1cyclictest0-21swapper/020:40:290
12842991816,1cyclictest0-21swapper/019:25:400
12842991815,2cyclictest4099-21H222:10:210
12842991815,2cyclictest3987-21H222:10:210
12842991815,2cyclictest15008-21nfsd423:55:190
12842991814,3cyclictest0-21swapper/022:00:170
1284299180,3cyclictest1829-21systemd-journal19:57:310
1284299180,2cyclictest3991-21H222:10:210
1284299180,17cyclictest1079-21cups-browsed23:15:010
1284299180,16cyclictest32103-21latency_hist19:45:010
12844991715,1cyclictest0-21swapper/221:25:132
12844991714,2cyclictest8785-21cat23:45:152
12844991714,2cyclictest649-21expr19:45:152
12844991714,2cyclictest5281-21chrt22:41:372
12844991714,2cyclictest3985-21H222:10:212
12844991714,2cyclictest31807-21latency21:35:182
12844991714,2cyclictest16984-21cat20:15:002
12844991714,1cyclictest0-21swapper/221:15:132
1284499171,2cyclictest29610-21mailstats21:30:212
1284499171,15cyclictest0-21swapper/219:20:152
1284499170,2cyclictest3989-21H222:10:212
1284499170,2cyclictest3985-21H222:10:212
1284499170,2cyclictest3983-21H222:10:212
1284499170,2cyclictest2803-21ntp_offset21:40:202
1284499170,2cyclictest2803-21ntp_offset21:40:192
1284499170,2cyclictest17962-21cron19:17:002
1284499170,2cyclictest14831-21ls21:05:182
1284499170,2cyclictest1351-21lxd19:32:512
1284499170,16cyclictest993-21dbus-daemon20:51:192
1284499170,16cyclictest9462-21munin-run21:55:002
1284499170,16cyclictest8694-21apache_accesses22:50:112
1284499170,16cyclictest5431-21cat20:50:002
1284499170,16cyclictest4099-21H222:10:212
1284499170,16cyclictest3985-21H222:10:212
1284499170,16cyclictest3979-21H222:10:212
1284499170,16cyclictest32083-21mailstats00:25:212
1284499170,16cyclictest30415-21sendmail_mailtr20:35:192
1284499170,16cyclictest27354-21perf00:20:002
1284499170,16cyclictest27354-21perf00:20:002
1284499170,16cyclictest2594-21cpuspeed_turbos23:35:122
1284499170,16cyclictest21425-21needreboot20:20:172
1284499170,16cyclictest19660-21ntp_states22:10:192
1284499170,16cyclictest1923-21sed00:30:172
1284499170,16cyclictest18307-21apache219:10:122
1284499170,16cyclictest17730-21fschecks_count21:10:152
1284499170,16cyclictest12980-21pzem_energy20:05:212
1284499170,15cyclictest3991-21H222:10:212
1284399172,14cyclictest0-21swapper/120:31:411
12843991714,2cyclictest7280-21grep22:45:191
12843991714,2cyclictest3985-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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