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2026-06-10 - 22:12
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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 Wed Jun 10, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15745993130,0cyclictest0-21swapper/110:51:231
1574699243,20cyclictest0-21swapper/210:50:502
1574699241,2cyclictest28444-21ps07:30:192
1574699240,23cyclictest29478-21fschecks_count08:30:132
1574699240,23cyclictest29478-21fschecks_count08:30:132
1574699230,2cyclictest4651-21apt-get12:35:002
1574699230,22cyclictest17559-21dpkg12:00:012
1574699230,22cyclictest0-21swapper/210:30:162
1574699230,1cyclictest0-21swapper/212:30:202
1574699230,1cyclictest0-21swapper/209:20:002
1574699230,17cyclictest11399-21sshd07:58:392
1574499230,5cyclictest0-21swapper/007:15:140
1574699224,17cyclictest0-21swapper/208:04:562
15746992214,7cyclictest30513-21expr09:30:132
1574699220,2cyclictest25584-21gzip08:25:012
1574699220,2cyclictest2285-21timerwakeupswit11:30:212
1574699220,2cyclictest17385-21perf10:05:012
1574699220,2cyclictest14923-21cat10:00:012
1574699220,21cyclictest2781-21cat07:45:012
1574699220,21cyclictest0-21swapper/210:20:112
1574699220,1cyclictest0-21swapper/208:40:282
1574699220,16cyclictest5162-21ps09:40:192
1574699220,16cyclictest22484-21tune2fs11:10:142
1574699220,16cyclictest22484-21tune2fs11:10:132
1574699220,15cyclictest0-21swapper/211:50:212
15745992213,9cyclictest0-21swapper/111:21:531
15746992114,6cyclictest31627-21switchtime11:25:202
15746992114,6cyclictest22909-21postgres12:09:282
1574699211,1cyclictest0-21swapper/208:55:142
1574699210,2cyclictest6781-21cut08:45:202
1574699210,2cyclictest3918-21tune2fs07:45:162
1574699210,2cyclictest27782-21ls11:20:132
1574699210,2cyclictest27410-21grep09:25:122
1574699210,2cyclictest27328-21netstat12:15:162
1574699210,2cyclictest24146-21sed07:25:012
1574699210,2cyclictest20480-21sed10:10:002
1574699210,2cyclictest1-21systemd11:08:582
1574699210,2cyclictest11645-21cut11:50:002
1574699210,2cyclictest10289-21perf10:50:012
1574699210,20cyclictest187462sleep207:15:022
1574699210,20cyclictest0-21swapper/210:40:172
1574699210,20cyclictest0-21swapper/208:10:012
1574699210,1cyclictest10056-21kernelversion09:50:162
1574699210,1cyclictest0-21swapper/211:20:012
1574699210,1cyclictest0-21swapper/210:25:162
1574699210,1cyclictest0-21swapper/210:15:122
1574699210,1cyclictest0-21swapper/207:50:162
1574699210,15cyclictest18806-21nfsd408:10:182
1574699210,15cyclictest1708-21ls12:30:002
1574699210,0cyclictest0-21swapper/207:35:142
1574499210,20cyclictest870-21systemd-logind08:58:520
15746992014,5cyclictest26100-21/usr/sbin/munin08:25:142
15746992014,5cyclictest0-21swapper/211:37:122
15746992014,5cyclictest0-21swapper/207:13:322
15746992013,6cyclictest6969-21df11:40:152
15746992013,6cyclictest3387-21cut10:35:192
1574699200,2cyclictest25216-21fschecks_count09:20:142
1574699200,2cyclictest25080-21sed12:10:212
1574699200,1cyclictest0-21swapper/209:10:122
1574699200,1cyclictest0-21swapper/209:05:202
1574699200,1cyclictest0-21swapper/208:50:162
1574699200,19cyclictest0-21swapper/211:55:122
1574699200,19cyclictest0-21swapper/209:00:062
1574699200,19cyclictest0-21swapper/207:25:172
1574699200,14cyclictest0-21swapper/209:35:202
1574699200,0cyclictest0-21swapper/209:48:072
1574599200,17cyclictest0-21swapper/107:31:551
15746991914,4cyclictest21734-21nvmesmart_nvme008:15:212
15746991914,4cyclictest0-21swapper/212:20:122
15746991913,5cyclictest16157-21/usr/sbin/munin11:00:132
15746991913,5cyclictest0-21swapper/210:10:122
1574699190,1cyclictest0-21swapper/208:35:222
1574599192,2cyclictest28796-21date12:20:011
15745991917,1cyclictest21-21ksoftirqd/109:35:121
15745991915,3cyclictest0-21swapper/112:27:321
15744991915,3cyclictest0-21swapper/009:05:010
1574499190,18cyclictest0-21swapper/008:22:400
1574699180,14cyclictest0-21swapper/210:57:482
15745991815,2cyclictest17822-21sendmail_mailtr09:05:201
15745991814,3cyclictest7475-21sshd10:44:161
15745991814,3cyclictest10320-21latency_hist10:50:001
15745991813,3cyclictest0-21swapper/109:10:191
15745991812,3cyclictest24730-21nfsd410:15:151
1574599181,16cyclictest3823-21smartctl08:40:171
1574599181,16cyclictest31692-21chrt07:35:511
15744991814,3cyclictest0-21swapper/009:48:170
1574499181,16cyclictest4538-21chrt08:41:500
1574499180,16cyclictest17036-21python311:59:590
15745991714,2cyclictest30385-21expr11:25:141
15745991714,2cyclictest27812-21cat09:25:121
15745991714,2cyclictest27232-21missed_timers10:20:171
15745991714,2cyclictest20783-21cpuspeed_turbos10:10:111
15745991714,2cyclictest19236-21ls08:10:211
15745991714,2cyclictest10312-21cron08:55:001
1574599170,2cyclictest7122-21fschecks_count07:50:141
1574599170,2cyclictest3414-21master11:07:371
1574599170,2cyclictest30072-21nfsd410:25:151
1574599170,2cyclictest23683-21expr12:10:131
1574599170,2cyclictest22991-21ps07:20:201
1574599170,2cyclictest17033-21taskset10:00:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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