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2025-11-23 - 13:46
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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 Sun Nov 23, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1164499234,13cyclictest14781-21sed00:00:010
1164499234,11cyclictest25757-21http19:35:010
1164499230,5cyclictest0-21swapper/021:21:510
1164999222,17cyclictest5537-21nvmesmart_nvme023:40:182
1164599213,11cyclictest14377-21python319:15:021
11649991915,3cyclictest29641-21cpuspeed_turbos19:40:162
1164999190,16cyclictest11789-21fschecks_time20:05:162
1164599190,1cyclictest0-21swapper/120:30:011
1164599190,18cyclictest28876-21grep20:35:201
11644991918,1cyclictest9-21ksoftirqd/000:10:140
11644991917,1cyclictest0-21swapper/020:38:500
11644991917,1cyclictest0-21swapper/000:02:500
1164499190,18cyclictest3257-21sendmail-mta20:47:580
1164999182,15cyclictest5889-21cstates19:55:162
11649991817,1cyclictest28-21ksoftirqd/222:06:012
11649991817,1cyclictest28-21ksoftirqd/222:06:002
11649991814,3cyclictest19953-21sed22:15:012
1164999181,16cyclictest28288-21smtpd22:27:582
11644991816,1cyclictest0-21swapper/023:41:590
11644991816,1cyclictest0-21swapper/019:24:340
11644991814,3cyclictest3308-21cron23:39:010
1164499181,16cyclictest24980-21cat23:20:110
1164499181,16cyclictest10522-21chrt20:03:050
1164999172,1cyclictest4854-21if_eno120:50:172
1164999172,1cyclictest271rcuc/220:15:162
11649991716,1cyclictest28-21ksoftirqd/200:37:342
11649991715,1cyclictest28-21ksoftirqd/223:37:432
11649991715,1cyclictest28-21ksoftirqd/222:40:172
11649991715,1cyclictest271rcuc/221:50:142
11649991715,1cyclictest271rcuc/221:35:232
11649991715,1cyclictest0-21swapper/222:20:142
11649991715,1cyclictest0-21swapper/220:04:082
11649991714,2cyclictest9325-21cut22:50:192
11649991714,2cyclictest7663-21latency_hist22:50:002
11649991714,2cyclictest6987-21cpuspeed_turbos20:55:152
11649991714,2cyclictest4785-21sed21:45:232
11649991714,2cyclictest2707-21lxd20:38:572
11649991714,2cyclictest25299-21ntpq00:15:182
11649991714,2cyclictest18555-21uniq19:20:162
11649991714,2cyclictest17853-21cron21:15:012
11649991714,2cyclictest16498-21sed00:00:202
11649991714,2cyclictest14989-21munin-run00:00:002
11649991714,2cyclictest11935-21http21:05:002
11649991713,3cyclictest1299-21lxd23:18:572
11649991713,3cyclictest11362-21dpkg22:00:012
1164999171,15cyclictest30772-21cat22:30:222
1164999171,15cyclictest28373-21switchtime00:20:242
1164999171,15cyclictest271rcuc/221:30:142
1164999171,15cyclictest271rcuc/221:20:152
1164999171,15cyclictest271rcuc/220:40:152
1164999171,15cyclictest271rcuc/220:20:162
1164999171,15cyclictest271rcuc/220:10:162
1164999171,15cyclictest24987-21awk20:30:142
1164999171,15cyclictest10754-21strings23:50:172
1164999171,15cyclictest10754-21strings23:50:172
1164999170,2cyclictest9211-21latency_hist23:50:002
1164999170,2cyclictest4581-21H212:26:332
1164999170,2cyclictest31555-21taskset00:27:472
1164999170,2cyclictest20541-21sed22:15:022
1164999170,2cyclictest13963-21nfsd421:05:182
1164999170,16cyclictest414-20systemd-journal21:18:082
1164999170,16cyclictest26208-21nfsd423:20:182
1164999170,16cyclictest24867-21processes19:30:212
1164999170,16cyclictest15026-21pzem_power23:00:202
1164999170,16cyclictest12179-21grep19:10:162
1164999170,16cyclictest0-21swapper/220:25:212
1164599179,4cyclictest0-21swapper/100:01:541
1164599172,1cyclictest21-21ksoftirqd/119:31:471
1164599172,1cyclictest0-21swapper/121:50:271
11645991715,1cyclictest817-21missed_timers19:45:181
11645991715,1cyclictest0-21swapper/121:14:541
11645991715,1cyclictest0-21swapper/119:51:101
11645991714,2cyclictest9782-21tr23:50:131
11645991714,2cyclictest9782-21tr23:50:131
11645991714,2cyclictest5457-21ntpq20:50:191
11645991714,2cyclictest3764-21grep22:40:181
11645991714,2cyclictest31791-21nfsd420:40:191
11645991714,2cyclictest30736-21nfsd400:25:181
11645991714,2cyclictest20189-21https22:15:011
11645991714,2cyclictest18250-21/usr/sbin/munin22:10:161
11645991714,2cyclictest13019-21perl23:55:181
11645991714,2cyclictest11743-21taskset21:03:461
11645991713,3cyclictest22335-21nfsd421:20:191
1164599171,15cyclictest283952chrt22:29:151
1164599171,15cyclictest12919-21expr21:05:151
1164599170,2cyclictest2440-21sendmail_mailqu23:35:201
1164599170,2cyclictest12351-21grep20:05:191
1164599170,1cyclictest4534-21H212:26:331
1164599170,1cyclictest0-21swapper/122:05:131
1164599170,1cyclictest0-21swapper/122:05:121
1164599170,1cyclictest0-21swapper/100:05:051
1164599170,16cyclictest7406-21ls19:55:241
1164599170,16cyclictest4304-21grep00:35:201
1164599170,16cyclictest30007-21snapd23:16:491
1164599170,16cyclictest21572-21sshd20:22:271
1164599170,16cyclictest12835-21chrt22:57:261
1164599170,16cyclictest10693-21turbostat20:05:011
1164599170,16cyclictest0-21swapper/123:45:211
1164599170,16cyclictest0-21swapper/119:15:221
11644991715,1cyclictest0-21swapper/021:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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