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2026-04-11 - 18:55
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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 Apr 11, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10546992826,2cyclictest0-21swapper/111:00:231
10546992322,0cyclictest0-21swapper/108:44:431
1054799220,18cyclictest0-21swapper/209:15:132
1054799210,20cyclictest843-21systemd-network11:31:262
1054599210,3cyclictest0-21swapper/007:26:350
10547992014,5cyclictest426-21systemd-udevd12:34:522
1054799200,5cyclictest870-21systemd-logind09:58:522
1054699204,15cyclictest0-21swapper/111:38:331
1054799192,2cyclictest30111-21smtpd10:32:292
1054799192,16cyclictest5717-21cpuspeed_turbos09:50:132
10547991918,1cyclictest32646-21kworker/2:008:44:422
10547991917,1cyclictest0-21swapper/208:10:272
1054799190,18cyclictest426-21systemd-udevd09:38:522
10546991916,2cyclictest13750-21uname09:05:201
1054699190,1cyclictest0-21swapper/110:20:001
1054599194,1cyclictest0-21swapper/012:38:140
1054599193,15cyclictest0-21swapper/009:34:020
10545991917,1cyclictest9-21ksoftirqd/008:30:140
10545991917,1cyclictest0-21swapper/011:08:590
10545991917,1cyclictest0-21swapper/009:58:210
1054599190,3cyclictest0-21swapper/007:15:210
1054799182,15cyclictest0-21swapper/208:25:202
1054799182,15cyclictest0-21swapper/207:21:012
10547991815,2cyclictest14883-21idleruntime12:00:152
10547991815,2cyclictest13679-21chrt12:00:002
10547991815,2cyclictest12471-21nfsd407:10:172
10547991815,1cyclictest0-21swapper/208:09:222
1054799181,2cyclictest7618-21switchtime11:45:222
1054799181,2cyclictest22570-21nfsd411:15:172
1054799180,17cyclictest426-21systemd-udevd07:38:522
1054799180,17cyclictest2444-21fschecks_count07:50:172
1054699182,15cyclictest0-21swapper/108:15:001
1054699181,16cyclictest863-21avahi-daemon10:05:201
10546991811,5cyclictest2007-21systemd-journal08:50:541
1054699181,15cyclictest0-21swapper/107:26:361
1054699180,3cyclictest1829-21systemd-journal12:16:591
1054699180,16cyclictest0-21swapper/112:26:461
1054599182,15cyclictest9-21ksoftirqd/010:18:530
10545991814,3cyclictest21182-21apache208:25:010
1054599180,3cyclictest1523-21lxd09:22:420
10547991715,1cyclictest0-21swapper/210:45:012
10547991714,2cyclictest3991-21H222:10:212
10547991714,2cyclictest3989-21H222:10:212
10547991714,2cyclictest3989-21H222:10:212
10547991714,2cyclictest3983-21H222:10:212
10547991714,2cyclictest3356-21awk08:50:122
10547991714,2cyclictest3053-21systemd-logind09:22:522
10547991714,2cyclictest25187-21sed08:30:172
10547991714,2cyclictest16860-21apt-config10:10:002
10547991714,2cyclictest16771-21apt-config07:20:012
10547991714,2cyclictest12647-21mailstats10:00:222
10547991714,2cyclictest0-21swapper/207:28:332
10547991713,3cyclictest0-21swapper/210:57:172
10547991713,3cyclictest0-21swapper/210:57:172
1054799171,15cyclictest5096-21wc07:55:152
1054799171,15cyclictest0-21swapper/212:25:162
1054799170,2cyclictest28595-21nvmesmart_nvme008:35:212
1054799170,2cyclictest2145-21switchtime08:45:222
1054799170,2cyclictest15886-21cpuspeed_turbos11:05:142
1054799170,2cyclictest14892-21munin-plugin-st09:10:012
1054799170,16cyclictest9090-21/usr/sbin/munin09:00:142
1054799170,16cyclictest8841-21nfsd410:50:182
1054799170,16cyclictest662-21vmstat10:35:222
1054799170,16cyclictest455-21plymouthd08:20:152
1054799170,16cyclictest3976-21H222:10:212
1054799170,16cyclictest28147-21nfsd411:25:192
1054799170,16cyclictest25907-21fschecks_count12:20:162
1054799170,16cyclictest18226-21grep12:05:192
1054799170,16cyclictest16748-21snapd07:32:482
1054799170,16cyclictest15839-21which09:10:152
1054799170,16cyclictest15839-21which09:10:142
1054799170,16cyclictest15315-21munin-run11:05:012
1054799170,16cyclictest10019-21ntpq11:50:182
1054799170,16cyclictest0-21swapper/212:15:202
1054799170,15cyclictest0-21swapper/208:03:462
1054699172,1cyclictest0-21swapper/109:55:211
10546991715,1cyclictest21-21ksoftirqd/112:35:141
10546991714,2cyclictest3550-21if_eno109:45:161
10546991714,2cyclictest3053-21systemd-logind10:10:521
10546991714,2cyclictest25311-21apt-get12:20:141
10546991714,2cyclictest17269-21cpuspeed_turbos07:20:131
10546991714,2cyclictest1552-21/usr/sbin/munin08:45:171
10546991713,1cyclictest0-21swapper/111:20:011
1054699171,15cyclictest3981-21H222:10:211
1054699171,15cyclictest0-21swapper/107:48:521
1054699170,2cyclictest706-21python312:34:591
1054699170,2cyclictest3981-21H222:10:211
1054699170,2cyclictest16092-21chrt07:17:361
1054699170,2cyclictest1521-21lxd07:40:411
1054699170,2cyclictest1517-21lxd09:42:421
1054699170,2cyclictest10680-21readlink09:00:211
1054699170,1cyclictest4099-21H222:10:211
1054699170,16cyclictest5793-21cpuspeed_turbos09:50:141
1054699170,16cyclictest4035-21H222:10:211
1054699170,16cyclictest3053-21systemd-logind08:06:521
1054699170,16cyclictest27886-21cut07:40:001
1054699170,16cyclictest19371-21idleruntime-cro12:10:001
1054699170,16cyclictest16830-21snapd07:30:381
1054699170,16cyclictest1517-21lxd09:22:411
1054699170,16cyclictest14806-21fschecks_time12:00:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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