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2025-11-21 - 21:08
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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 Nov 21, 2025 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2768899285,14cyclictest0-21swapper/010:50:000
27693992524,0cyclictest0-21swapper/109:25:161
27688992424,0cyclictest0-21swapper/011:13:350
2769899230,22cyclictest0-21swapper/212:30:012
2769399230,22cyclictest5324-21iwlist07:25:131
27688992323,0cyclictest0-21swapper/010:29:380
2768899230,5cyclictest32222-21grep12:00:180
2769899210,3cyclictest454-21plymouthd11:42:112
2769899210,20cyclictest823-21systemd-network11:27:582
2768899215,2cyclictest12482-21cstates08:35:140
2768899210,3cyclictest0-21swapper/012:32:220
2769899201,3cyclictest1403-21lxd10:21:032
2769899200,18cyclictest0-21swapper/210:09:512
2768899203,16cyclictest13079-21latency_hist09:35:010
2768899200,19cyclictest893-21systemd-logind11:49:060
2768899200,19cyclictest434-21systemd-udevd10:39:070
2769899193,15cyclictest0-21swapper/208:13:552
27698991914,4cyclictest573-21nfsd409:10:152
2769899191,17cyclictest15802-21fschecks_time08:40:162
2769899190,1cyclictest0-21swapper/211:11:182
2769899190,17cyclictest0-21swapper/210:45:002
2769399192,2cyclictest32078-21chrt08:12:531
27693991917,1cyclictest0-21swapper/111:13:411
2769399190,2cyclictest13726-21ntpq10:30:211
2768899193,2cyclictest9532-21fschecks_count11:20:150
2768899193,15cyclictest0-21swapper/009:44:350
2768899192,2cyclictest21118-21latency_hist12:40:010
2768899192,16cyclictest0-21swapper/011:58:420
2768899192,16cyclictest0-21swapper/007:20:160
2768899192,15cyclictest0-21swapper/009:45:470
2768899190,3cyclictest0-21swapper/010:10:100
2768899190,3cyclictest0-21swapper/009:17:110
2768899190,18cyclictest434-21systemd-udevd09:39:070
2768899190,18cyclictest30597-21uniq08:10:130
2768899190,18cyclictest0-21swapper/009:52:040
2768899190,18cyclictest0-21swapper/009:08:390
2768899190,18cyclictest0-21swapper/009:08:380
2768899190,17cyclictest0-21swapper/012:05:150
2769899189,0cyclictest0-21swapper/207:15:152
2769899182,15cyclictest0-21swapper/208:29:482
27698991815,2cyclictest30778-21munin-plugin-st12:00:002
27698991815,2cyclictest28-21ksoftirqd/208:05:092
2769899180,3cyclictest8667-21nvmesmart_nvme007:30:192
2769899180,18cyclictest12800-21perf12:25:012
2769899180,17cyclictest2460-21nfsd407:20:162
2769399182,15cyclictest16875-21timerwakeupswit10:35:211
27693991816,1cyclictest0-21swapper/110:25:161
27693991816,1cyclictest0-21swapper/108:23:461
27693991815,2cyclictest30540-21munin-run07:15:001
27693991815,2cyclictest19255-21expr07:50:151
27693991814,3cyclictest12543-21sendmail07:40:011
2769399180,3cyclictest1059-21cups-browsed08:45:231
2769399180,2cyclictest32128-21nvmesmart_nvme007:15:201
2769399180,16cyclictest554-21nfsd409:10:151
2769399180,16cyclictest0-21swapper/107:49:121
2769399180,16cyclictest0-21swapper/107:49:111
2768899182,15cyclictest56012chrt10:15:390
2768899182,15cyclictest0-21swapper/009:24:320
27688991816,1cyclictest0-21swapper/009:56:190
2768899180,3cyclictest19575-21perf11:40:000
2768899180,3cyclictest13610-21grep10:30:190
2768899180,3cyclictest11424-21perf08:35:000
2768899180,1cyclictest21958-21sshd11:40:340
2768899180,17cyclictest0-21swapper/010:45:180
2768899180,0cyclictest0-21swapper/008:02:470
27698991715,1cyclictest0-21swapper/212:36:412
27698991715,1cyclictest0-21swapper/212:31:042
27698991715,1cyclictest0-21swapper/208:30:172
27698991714,2cyclictest1070-21latency11:05:172
2769899170,2cyclictest9141-21cpuspeed_turbos11:20:152
2769899170,2cyclictest4981-21pzem_energy08:20:202
2769899170,2cyclictest4536-21H212:26:332
2769899170,2cyclictest30924-21/usr/sbin/munin12:00:122
2769899170,2cyclictest24098-21expr10:50:152
2769899170,2cyclictest22364-21nfsd410:45:192
2769899170,16cyclictest8272-21expr12:15:132
2769899170,16cyclictest6044-21pzem_current07:25:172
2769899170,16cyclictest5903-21chrt10:19:402
2769899170,16cyclictest46632chrt09:18:382
2769899170,16cyclictest3707-21lxd09:25:032
2769899170,16cyclictest30005-21snapd09:51:492
2769899170,16cyclictest29800-21latency09:05:212
2769899170,16cyclictest29800-21latency09:05:202
2769899170,16cyclictest287332chrt10:57:442
2769899170,16cyclictest28613-21ntp_kernel_pll_10:00:172
2769899170,16cyclictest27775-21turbostat11:55:002
2769899170,16cyclictest23011-21ps07:55:182
2769899170,16cyclictest17482-21cat07:45:182
2769899170,16cyclictest17482-21cat07:45:172
2769899170,16cyclictest1536-21grep08:15:192
2769899170,16cyclictest1402-21lxd09:49:032
2769899170,16cyclictest13829-21expr07:40:172
2769899170,16cyclictest10298-21cat07:35:152
2769399172,1cyclictest0-21swapper/107:43:261
27693991715,1cyclictest0-21swapper/111:43:451
27693991715,1cyclictest0-21swapper/111:05:151
27693991714,2cyclictest743-21cstates08:15:161
27693991714,2cyclictest5324-21http_loadtime12:10:161
27693991714,2cyclictest30501-21latency_hist12:00:001
27693991714,2cyclictest30025-21snapd08:27:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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