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2026-01-05 - 08:38
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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 Mon Jan 05, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2322992525,0cyclictest0-21swapper/100:25:161
232299230,22cyclictest0-21swapper/123:45:161
232199226,15cyclictest1493-21timerwakeupswit21:00:260
2322992010,0cyclictest0-21swapper/120:13:021
232299200,16cyclictest0-21swapper/122:30:571
2321992017,2cyclictest23280-21timerwakeupswit00:30:230
2323991917,1cyclictest8211-21http_loadtime00:05:162
2323991914,3cyclictest0-21swapper/221:30:272
232399190,16cyclictest7033-21expr21:10:192
232299192,2cyclictest31668-21kernelversion23:50:161
232299190,5cyclictest0-21swapper/100:04:271
232299190,18cyclictest12937-21timerwakeupswit23:15:231
232199192,16cyclictest6941-21grep21:10:180
2321991917,1cyclictest0-21swapper/000:08:590
2321991914,3cyclictest1478-21snapd00:02:390
2323991815,3cyclictest0-21swapper/222:55:332
2323991815,2cyclictest32697-21vmstat23:50:232
232399180,1cyclictest0-21swapper/222:36:122
232399180,17cyclictest455-21plymouthd21:50:012
232399180,16cyclictest24763-21nvmesmart_nvme022:40:232
232399180,15cyclictest0-21swapper/222:05:202
2322991815,2cyclictest27614-21idleruntime-cro23:45:011
2322991814,3cyclictest0-21swapper/123:20:481
232299180,3cyclictest17216-21cut21:30:161
232299180,17cyclictest21348-21bounce21:37:221
232199182,1cyclictest314402chrt22:54:160
232199182,1cyclictest25038-21interrupts00:35:190
232199182,15cyclictest15379-21readlink23:20:230
232199182,15cyclictest0-21swapper/022:37:050
2321991814,3cyclictest17879-21nfsd419:35:200
232199181,15cyclictest26611-21nfsd423:40:200
232199180,17cyclictest14132-21sed00:15:180
232199180,16cyclictest29001-21nfsd419:55:220
2323991715,1cyclictest695-21needreboot21:00:202
2323991715,1cyclictest50082sleep219:11:532
2323991715,1cyclictest3991-21H222:10:212
2323991715,1cyclictest0-21swapper/223:25:192
2323991714,2cyclictest701-21/usr/sbin/munin20:05:192
2323991714,2cyclictest701-21/usr/sbin/munin20:05:192
2323991714,2cyclictest3985-21H222:10:212
2323991714,2cyclictest30394-21/usr/sbin/munin20:00:142
2323991714,2cyclictest30334-21latency_hist20:00:012
2323991714,2cyclictest25771-21cat19:50:212
2323991714,2cyclictest22030-21fschecks_count00:30:162
2323991714,2cyclictest19096-21ntp_kernel_pll_20:35:182
2323991714,2cyclictest10465-21irqstats20:20:182
232399171,1cyclictest31312-21chrt22:52:322
232399170,2cyclictest5429-21cron23:05:002
232399170,2cyclictest28338-21expr23:45:132
232399170,2cyclictest26739-21open_inodes23:40:212
232399170,2cyclictest26255-21cpuspeed_turbos22:45:142
232399170,2cyclictest25139-21cat00:35:192
232399170,2cyclictest1079-21cups-browsed20:10:242
232399170,16cyclictest7025-21grep19:15:202
232399170,16cyclictest3991-21H222:10:212
232399170,16cyclictest3991-21H222:10:212
232399170,16cyclictest3981-21H222:10:212
232399170,16cyclictest24972-21nfsd420:45:172
232399170,16cyclictest24446-21chrt19:49:002
232399170,16cyclictest23278-21munin-run20:45:012
232399170,16cyclictest1829-21systemd-journal21:29:052
232399170,16cyclictest1478-21snapd21:07:392
232399170,16cyclictest10581-21chrt21:19:102
2322991715,1cyclictest0-21swapper/123:25:231
2322991714,2cyclictest9171-21latency_hist22:15:011
2322991714,2cyclictest5718-21cpuspeed_turbos21:10:141
2322991714,2cyclictest4421-21sed23:00:221
2322991714,2cyclictest3976-21H222:10:211
2322991714,2cyclictest3053-21systemd-logind22:40:511
2322991714,2cyclictest28284-21sshd22:48:501
2322991714,2cyclictest22963-21perf20:45:001
2322991714,2cyclictest2069-21systemd-udevd19:30:531
2322991714,2cyclictest18098-21processes19:35:211
2322991714,2cyclictest14480-21expr00:15:191
2322991714,2cyclictest12983-21cat19:25:261
232299171,1cyclictest314322sleep122:54:081
232299171,15cyclictest0-21swapper/123:35:191
232299170,2cyclictest9977-21find00:09:001
232299170,2cyclictest455-21plymouthd21:45:181
232299170,2cyclictest4106-21ntp_kernel_err21:05:231
232299170,2cyclictest3979-21H222:10:211
232299170,2cyclictest28900-21nfsd419:55:211
232299170,2cyclictest27169-21chrt19:54:041
232299170,2cyclictest1550-21snapd19:17:331
232299170,2cyclictest11069-21find22:15:201
232299170,1cyclictest0-21swapper/121:56:531
232299170,1cyclictest0-21swapper/120:48:531
232299170,1cyclictest0-21swapper/100:30:151
232299170,16cyclictest6828-21wc20:15:171
232299170,16cyclictest3985-21H222:10:211
232299170,16cyclictest3985-21H222:10:211
232299170,16cyclictest3351-21lxd20:58:501
232299170,16cyclictest27434-21ls20:50:181
232299170,16cyclictest20282-21cut20:40:011
232299170,16cyclictest1484-21snapd19:22:521
232299170,16cyclictest11074-21/usr/sbin/munin21:20:191
232299170,16cyclictest10642-21wc23:15:011
232299170,16cyclictest0-21swapper/121:01:361
2321991715,1cyclictest0-21swapper/020:10:460
2321991714,2cyclictest3985-21H222:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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