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2025-12-27 - 07:33
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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 Dec 27, 2025 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3881992414,9cyclictest21-21ksoftirqd/121:08:431
388099241,18cyclictest0-21swapper/000:30:000
3882992118,2cyclictest28630-21sed19:55:012
388099214,16cyclictest0-21swapper/021:09:550
388299202,2cyclictest3987-21H222:10:212
3882992018,1cyclictest0-21swapper/200:30:142
388099203,2cyclictest32272-21apt-key23:50:000
388099203,16cyclictest27190-21latency21:45:170
388099202,16cyclictest0-21swapper/000:24:570
3880992017,2cyclictest9-21ksoftirqd/000:05:000
388299192,16cyclictest30246-21expr19:55:172
388299190,4cyclictest3787-21nfsd420:05:172
388199193,15cyclictest0-21swapper/122:23:241
388199192,16cyclictest29059-21nfsd422:45:211
388199190,18cyclictest20231-21munin-run23:30:001
388199190,18cyclictest0-21swapper/121:25:131
388099192,2cyclictest20004-21chrt21:32:340
388099192,2cyclictest20004-21chrt21:32:330
388099192,16cyclictest8526-21cat21:10:230
388099192,16cyclictest3080-21if_enp1s020:05:140
388099192,16cyclictest10450-21run-parts20:20:010
3880991916,2cyclictest7494-21ls19:15:130
3880991916,2cyclictest3704-21expr22:00:180
3880991916,2cyclictest13025-21chrt22:18:310
3880991915,3cyclictest0-21swapper/021:41:350
3880991915,3cyclictest0-21swapper/019:10:220
3880991914,4cyclictest0-21swapper/022:48:210
388099191,17cyclictest0-21swapper/000:14:310
388299182,15cyclictest28-21ksoftirqd/219:23:202
388299182,15cyclictest28-21ksoftirqd/219:23:192
388299182,15cyclictest18177-21proc_pri20:30:212
3882991816,1cyclictest0-21swapper/223:01:112
3882991816,1cyclictest0-21swapper/219:47:162
3882991815,2cyclictest24435-21kernelversion21:40:152
3882991815,2cyclictest13614-21nfsd421:20:162
3882991814,3cyclictest13391-21ls23:15:172
388299181,2cyclictest3624-21nfsd422:00:182
388299180,3cyclictest13602-21perf20:25:012
3881991816,1cyclictest32136-21mailstats20:55:211
3881991816,1cyclictest0-21swapper/123:50:351
3881991815,2cyclictest15723-21threads20:25:221
3881991815,1cyclictest0-21swapper/120:53:551
3881991814,3cyclictest1483-21snapd19:30:091
3881991814,3cyclictest0-21swapper/123:35:331
3881991813,4cyclictest17924-21grep22:25:191
388199181,16cyclictest5001-21perf20:10:011
388199180,16cyclictest0-21swapper/121:31:271
388199180,16cyclictest0-21swapper/121:31:261
388099182,15cyclictest3992-21H222:10:210
388099182,15cyclictest27460-21/usr/sbin/munin19:50:170
388099182,15cyclictest0-21swapper/023:20:010
388099182,15cyclictest0-21swapper/022:30:170
3880991817,1cyclictest2272-21cut21:00:180
3880991814,1cyclictest0-21swapper/022:20:210
388099181,2cyclictest26962-21cat00:35:160
388099181,2cyclictest21498-21/usr/sbin/munin21:35:200
388099181,2cyclictest17388-21chrt19:33:560
388099181,2cyclictest0-21swapper/023:55:190
388099181,2cyclictest0-21swapper/022:50:190
388099181,2cyclictest0-21swapper/022:50:190
388099181,16cyclictest3076-21iscsid20:25:010
388099181,16cyclictest19051-21basename20:35:010
388099181,16cyclictest17147-21chrt23:20:300
388099181,16cyclictest1586-21chrt21:58:210
388099180,3cyclictest7087-21ls23:05:110
388099180,3cyclictest14462-21proxymap19:26:070
388099180,3cyclictest0-21swapper/021:20:110
388099180,16cyclictest3978-21H222:10:210
388099180,16cyclictest1477-21snapd20:45:090
3882991716,1cyclictest0-21swapper/220:00:462
3882991715,1cyclictest0-21swapper/200:25:172
3882991714,2cyclictest8990-21if_lxdbr022:10:162
3882991714,2cyclictest8856-21timerwakeupswit19:15:222
3882991714,2cyclictest8052-21cut23:05:162
3882991714,2cyclictest455-21plymouthd23:27:502
3882991714,2cyclictest31309-21basename21:55:002
3882991714,2cyclictest30502-21/usr/sbin/munin20:55:142
3882991714,2cyclictest27181-21expr23:40:132
3882991714,2cyclictest2232-21nfsd422:55:182
3882991714,2cyclictest20065-21fschecks_count22:30:172
3882991714,2cyclictest17822-21cpuspeed_turbos00:20:122
3882991714,2cyclictest16531-21nfsd419:30:172
3882991714,2cyclictest15153-21/usr/sbin/munin21:25:172
3882991714,2cyclictest14734-21needreboot22:20:212
3882991714,2cyclictest1-21systemd19:38:592
3882991713,3cyclictest9284-21head20:15:182
388299171,15cyclictest3989-21H222:10:212
388299170,2cyclictest5248-21latency19:10:182
388299170,2cyclictest3987-21H222:10:212
388299170,2cyclictest28580-21http_loadtime22:45:182
388299170,2cyclictest27374-21chrt22:44:282
388299170,2cyclictest2237-21awk21:00:192
388299170,2cyclictest22040-21latency23:30:172
388299170,2cyclictest21746-21sed20:39:012
388299170,2cyclictest18197-21expr21:30:152
388299170,2cyclictest18197-21expr21:30:152
388299170,2cyclictest15610-21expr23:20:112
388299170,16cyclictest7516-21find22:09:002
388299170,16cyclictest639-21latency_hist22:55:012
388299170,16cyclictest639-21latency_hist22:55:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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