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2026-03-13 - 09:42
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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 Fri Mar 13, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30194992925,3cyclictest0-21swapper/021:20:150
30195992818,10cyclictest0-21swapper/120:30:501
3019499270,18cyclictest0-21swapper/021:10:010
30195992415,0cyclictest0-21swapper/123:15:161
30195992415,0cyclictest0-21swapper/123:15:151
30195992414,5cyclictest0-21swapper/122:10:011
3019599240,24cyclictest0-21swapper/120:05:161
3019699230,22cyclictest870-21systemd-logind22:56:512
30195992114,6cyclictest0-21swapper/122:15:161
3019499210,18cyclictest0-21swapper/020:12:330
3019499210,18cyclictest0-21swapper/020:12:330
3019699202,17cyclictest0-21swapper/200:05:182
3019699200,19cyclictest426-21systemd-udevd21:36:512
3019599202,17cyclictest0-21swapper/120:30:001
30195992017,2cyclictest26366-21basename23:50:001
30195992017,0cyclictest0-21swapper/122:10:551
30195992016,3cyclictest0-21swapper/120:53:421
30195992014,3cyclictest0-21swapper/119:45:121
30196991917,1cyclictest28-21ksoftirqd/200:20:002
30196991916,2cyclictest15239-21php7.219:38:592
30196991915,3cyclictest0-21swapper/223:11:102
3019699190,18cyclictest870-21systemd-logind21:18:512
3019699190,18cyclictest426-21systemd-udevd23:36:522
3019699190,18cyclictest399-20systemd-journal00:00:012
3019699190,18cyclictest0-21swapper/223:55:172
3019699190,17cyclictest11680-21snapd23:50:092
3019599193,15cyclictest20123-21cat23:35:211
30195991917,1cyclictest0-21swapper/123:00:011
30195991916,2cyclictest19767-21acpi20:45:101
30195991916,1cyclictest0-21swapper/119:50:071
30195991911,4cyclictest0-21swapper/120:18:181
3019599190,3cyclictest0-21swapper/122:22:081
3019599190,16cyclictest0-21swapper/120:14:581
3019599190,16cyclictest0-21swapper/120:14:571
3019499193,15cyclictest26763-21apt23:50:110
30194991915,3cyclictest399-20systemd-journal00:25:010
3019699183,1cyclictest0-21swapper/219:25:182
3019699183,1cyclictest0-21swapper/219:15:192
30196991815,2cyclictest27994-21cat22:55:012
30196991815,2cyclictest18529-21dpkg21:40:022
30196991815,2cyclictest1490-21snapd00:10:292
30196991815,2cyclictest1478-21snapd21:27:392
30196991813,3cyclictest0-21swapper/200:35:132
3019699180,2cyclictest30681-21grep22:00:182
3019699180,15cyclictest0-21swapper/220:20:152
3019599182,1cyclictest0-21swapper/119:15:001
3019599182,15cyclictest268042sleep120:00:031
3019599182,15cyclictest10283-21cpuspeed_turbos23:20:141
3019599182,15cyclictest0-21swapper/123:00:211
30195991818,0cyclictest27582-21mii-tool21:55:161
30195991818,0cyclictest0-21swapper/123:50:211
30195991816,1cyclictest0-21swapper/122:30:011
30195991815,2cyclictest32183-21cat22:05:011
30195991815,2cyclictest14237-21cat21:30:211
30195991815,1cyclictest0-21swapper/119:57:041
30195991815,1cyclictest0-21swapper/100:06:591
30195991814,3cyclictest29221-21grep21:00:191
30195991814,3cyclictest0-21swapper/122:40:011
30195991814,3cyclictest0-21swapper/121:55:011
30195991814,1cyclictest0-21swapper/121:23:211
3019599181,2cyclictest16967-21cut20:40:011
3019599181,16cyclictest0-21swapper/100:10:131
30194991816,1cyclictest9-21ksoftirqd/019:45:170
30194991815,2cyclictest14760-21expr22:30:140
30194991814,3cyclictest1351-21lxd20:08:490
30194991813,1cyclictest0-21swapper/019:10:150
3019499181,16cyclictest0-21swapper/019:33:470
3019499180,17cyclictest5350-21nfsd419:20:160
3019699172,1cyclictest0-21swapper/219:10:142
30196991715,1cyclictest3981-21H222:10:212
30196991714,2cyclictest426-21systemd-udevd21:32:522
30196991714,2cyclictest3987-21H222:10:212
30196991714,2cyclictest3987-21H222:10:212
30196991714,2cyclictest3976-21H222:10:212
30196991714,2cyclictest2872-21systemd-logind20:36:522
30196991714,2cyclictest26949-21cpuspeed_turbos21:55:152
30196991714,2cyclictest22824-21processes21:45:192
30196991714,2cyclictest2069-21systemd-udevd20:40:512
30196991714,2cyclictest20105-21/usr/sbin/munin22:40:212
30196991714,2cyclictest1351-21lxd19:52:502
30196991714,2cyclictest11610-21ntpq23:20:182
30196991713,2cyclictest22526-21nfsd423:40:172
3019699171,15cyclictest28-21ksoftirqd/200:28:522
3019699170,2cyclictest7811-21hddtemp_smartct21:20:152
3019699170,2cyclictest5137-21chrt22:10:432
3019699170,2cyclictest399-20systemd-journal22:25:172
3019699170,2cyclictest29931-21chrt21:00:352
3019699170,2cyclictest2470-21cron20:15:012
3019699170,2cyclictest2470-21cron20:15:002
3019699170,16cyclictest5322-21nfsd419:20:152
3019699170,16cyclictest3979-21H222:10:212
3019699170,16cyclictest3976-21H222:10:212
3019699170,16cyclictest32190-21sed23:00:172
3019699170,16cyclictest31908-21nfsd421:05:182
3019699170,16cyclictest24668-21df19:55:142
3019699170,16cyclictest24354-21timerwakeupswit20:50:232
3019699170,16cyclictest18396-21latency_hist19:45:002
3019699170,16cyclictest1829-21systemd-journal22:45:582
3019699170,16cyclictest16573-21sshd22:32:112
3019699170,16cyclictest15126-21smtpd23:30:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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