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2026-01-03 - 18:56
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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 Jan 03, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151399240,5cyclictest0-21swapper/211:15:192
151199244,13cyclictest0-21swapper/007:59:520
151399220,17cyclictest20726-21cpuspeed_turbos11:30:152
151399202,15cyclictest0-21swapper/209:37:452
151399202,15cyclictest0-21swapper/207:40:172
1512992014,5cyclictest0-21swapper/111:05:221
1513991914,3cyclictest4051-21nfsd411:55:162
1512991916,1cyclictest0-21swapper/107:20:261
1512991915,3cyclictest0-21swapper/109:10:221
1512991915,1cyclictest0-21swapper/111:33:331
151299190,18cyclictest843-21systemd-network07:36:391
1511991915,3cyclictest0-21swapper/010:26:050
1511991914,4cyclictest0-21swapper/009:50:010
1513991816,1cyclictest28-21ksoftirqd/210:43:092
1513991816,1cyclictest17703-21expr11:25:132
1513991816,1cyclictest13503-21grep08:25:192
1513991815,2cyclictest14763-21nfsd407:30:182
151399180,17cyclictest2718-21fschecks_count10:00:172
151399180,17cyclictest2718-21fschecks_count10:00:162
151399180,17cyclictest16628-21apache_accesses12:20:102
151399180,15cyclictest29819-21cat10:50:012
1512991815,2cyclictest4035-21H222:10:211
1512991815,2cyclictest399-20systemd-journal08:46:311
1512991815,2cyclictest14796-21grep10:20:181
1512991815,2cyclictest0-21swapper/111:45:171
1512991815,2cyclictest0-21swapper/111:45:171
151299180,17cyclictest2069-21systemd-udevd11:12:521
151299180,16cyclictest2872-21systemd-logind09:58:511
151299180,15cyclictest3981-21H222:10:211
151199182,15cyclictest28495-21nfsd410:45:170
151199182,15cyclictest13736-21pluginstate08:25:210
1511991815,2cyclictest30043-21cpuspeed_turbos08:00:150
1511991815,1cyclictest0-21swapper/012:04:160
1511991814,3cyclictest0-21swapper/008:55:140
151199180,2cyclictest4035-21H222:10:210
151199180,17cyclictest4035-21H222:10:210
151199180,17cyclictest24748-21nfsd409:40:160
1513991715,1cyclictest0-21swapper/212:35:112
1513991715,1cyclictest0-21swapper/212:30:132
1513991715,1cyclictest0-21swapper/210:25:152
1513991715,1cyclictest0-21swapper/208:05:082
1513991715,1cyclictest0-21swapper/207:45:212
1513991714,2cyclictest5450-21ls07:15:162
1513991714,2cyclictest426-21systemd-udevd07:21:512
1513991714,2cyclictest3987-21H222:10:212
1513991714,2cyclictest3981-21H222:10:212
1513991714,2cyclictest31626-21apache_accesses11:50:112
1513991714,2cyclictest30821-21nfsd408:55:182
1513991714,2cyclictest3053-21systemd-logind08:43:512
1513991714,2cyclictest3053-21systemd-logind07:26:512
1513991714,2cyclictest27662-21processes09:45:192
1513991714,2cyclictest17731-21perf08:35:012
1513991714,1cyclictest13415-21proc_pri09:20:202
151399171,2cyclictest10343-21nfsd411:10:172
151399171,15cyclictest0-21swapper/211:35:142
151399170,2cyclictest30012-21cpuspeed_turbos08:00:132
151399170,2cyclictest28475-21cron11:49:552
151399170,2cyclictest28475-21cron11:49:542
151399170,2cyclictest19740-21expr12:25:152
151399170,2cyclictest17785-21/usr/sbin/munin09:30:142
151399170,2cyclictest1483-21snapd10:05:082
151399170,2cyclictest11624-21cat10:15:152
151399170,1cyclictest0-21swapper/209:25:142
151399170,16cyclictest7962-21pzem_voltage09:10:252
151399170,16cyclictest7109-21sendmail_mailst12:00:212
151399170,16cyclictest7006-21idleruntime11:05:172
151399170,16cyclictest3982-21H222:10:212
151399170,16cyclictest3495-21proc_pri07:10:212
151399170,16cyclictest31947-21vmstat10:50:232
151399170,16cyclictest24494-21apache_volume07:50:132
151399170,16cyclictest24115-21fschecks_time09:40:142
151399170,16cyclictest18866-21http_loadtime08:35:142
151399170,16cyclictest1718-21expr09:00:202
151399170,16cyclictest15247-21ntpq12:15:192
151399170,16cyclictest12460-21awk12:10:182
1512991715,1cyclictest21-21ksoftirqd/109:03:511
1512991714,2cyclictest9534-21grep12:05:181
1512991714,2cyclictest890-21awk08:05:141
1512991714,2cyclictest3987-21H222:10:211
1512991714,2cyclictest28468-21munin-run09:50:011
1512991714,2cyclictest20153-21grep10:30:181
1512991714,2cyclictest2007-21systemd-journal12:18:321
1512991714,2cyclictest19248-21cpuspeed_turbos07:40:141
1512991714,2cyclictest10999-21timerandwakeup09:15:221
151299171,1cyclictest0-21swapper/112:30:171
151299171,15cyclictest7501-21chrt12:00:281
151299170,2cyclictest5364-21switchtime08:10:221
151299170,2cyclictest426-21systemd-udevd08:33:521
151299170,2cyclictest24049-21idleruntime11:35:171
151299170,16cyclictest4672-21sed11:55:191
151299170,16cyclictest3784-21proc_pri10:00:221
151299170,16cyclictest3784-21proc_pri10:00:221
151299170,16cyclictest31207-21awk08:00:191
151299170,16cyclictest3053-21systemd-logind07:50:511
151299170,16cyclictest3053-21systemd-logind07:32:511
151299170,16cyclictest2872-21systemd-logind07:46:511
151299170,16cyclictest26333-21expr11:40:141
151299170,16cyclictest2069-21systemd-udevd08:44:511
151299170,16cyclictest1516-21lxd08:36:431
151299170,16cyclictest11687-21chrt08:22:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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