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2026-07-26 - 18:47
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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 Jul 26, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9575993017,7cyclictest9-21ksoftirqd/008:25:010
958699240,19cyclictest0-21swapper/211:45:132
9579992422,2cyclictest0-21swapper/110:40:201
958699230,18cyclictest0-21swapper/210:40:192
957999230,18cyclictest0-21swapper/112:07:351
957999230,18cyclictest0-21swapper/112:07:341
957999220,18cyclictest0-21swapper/108:31:191
9586992014,3cyclictest0-21swapper/210:58:492
957999202,14cyclictest0-21swapper/107:58:251
9579992018,1cyclictest21-21ksoftirqd/109:41:381
957599200,19cyclictest426-21systemd-udevd08:10:520
958699192,16cyclictest4035-21H222:10:212
958699192,16cyclictest19153-21grep11:10:202
9586991916,2cyclictest16215-21nfsd411:05:172
9586991916,1cyclictest0-21swapper/211:32:282
9586991915,3cyclictest0-21swapper/207:19:362
958699191,3cyclictest21304-21grep11:15:162
9586991913,5cyclictest0-21swapper/209:40:192
958699190,16cyclictest3976-21H222:10:212
9579991916,1cyclictest0-21swapper/110:02:571
957999190,18cyclictest15892-21snapd09:06:481
957999190,18cyclictest15892-21snapd09:06:481
957999190,17cyclictest0-21swapper/112:20:131
957599194,1cyclictest0-21swapper/008:55:010
957599193,15cyclictest11771-21cat07:10:210
957599192,16cyclictest0-21swapper/011:39:550
9575991917,1cyclictest0-21swapper/009:02:090
957599191,15cyclictest26913-21head09:30:190
957599191,15cyclictest26913-21head09:30:190
957599190,18cyclictest870-21systemd-logind10:18:520
957599190,16cyclictest3979-21H222:10:210
9586991816,1cyclictest0-21swapper/211:36:292
9586991814,3cyclictest878-21in:imuxsock09:08:592
9586991814,3cyclictest878-21in:imuxsock09:08:592
9586991814,3cyclictest22523-21anvil09:27:282
958699180,4cyclictest0-21swapper/208:45:132
958699180,3cyclictest3976-21H222:10:212
958699180,2cyclictest6666-21sed10:50:012
958699180,2cyclictest3979-21H222:10:212
958699180,2cyclictest13034-21munin-run10:05:012
958699180,17cyclictest1300-21lxd08:32:532
9579991815,2cyclictest3987-21H222:10:211
9579991815,2cyclictest31563-21nfsd412:30:171
9579991814,3cyclictest23630-21master08:29:061
957999181,16cyclictest20577-21python308:25:011
957999180,17cyclictest3076-21iscsid11:25:151
957999180,15cyclictest3983-21H222:10:211
9575991816,1cyclictest21642-21expr08:25:140
9575991815,2cyclictest914-21pzem09:40:210
9575991815,2cyclictest14501-21snapd08:49:280
9575991814,3cyclictest3987-21H222:10:210
9575991814,2cyclictest28828-21smtp08:35:420
957599181,2cyclictest8163-21chrt08:55:250
957599181,0cyclictest0-21swapper/009:35:220
957599180,16cyclictest4035-21H222:10:210
957599180,16cyclictest3987-21H222:10:210
9586991716,1cyclictest28-21ksoftirqd/209:32:502
9586991716,1cyclictest28-21ksoftirqd/209:32:502
9586991714,2cyclictest3976-21H222:10:212
9586991714,2cyclictest3394-21cupsd09:37:352
9586991714,2cyclictest14121-21cat12:00:142
9586991714,2cyclictest11277-21nvmesmart_nvme007:10:192
958699171,15cyclictest1988-21nfsd412:35:192
958699171,15cyclictest0-21swapper/208:40:182
958699171,15cyclictest0-21swapper/208:40:182
958699171,0cyclictest0-21swapper/209:59:182
958699170,2cyclictest4099-21H222:10:212
958699170,2cyclictest4035-21H222:10:212
958699170,2cyclictest4035-21H222:10:212
958699170,2cyclictest28152-21expr10:30:142
958699170,2cyclictest17755-21nfsd412:05:182
958699170,2cyclictest17755-21nfsd412:05:172
958699170,2cyclictest16193-21/usr/sbin/munin07:20:172
958699170,2cyclictest1521-21lxd11:50:532
958699170,2cyclictest12260-21apache_accesses11:00:122
958699170,2cyclictest11966-21kernelversion11:55:152
958699170,2cyclictest11475-21cron09:05:002
958699170,16cyclictest7072-21ls08:00:142
958699170,16cyclictest4752-21master09:49:112
958699170,16cyclictest3987-21H222:10:212
958699170,16cyclictest3987-21H222:10:212
958699170,16cyclictest30899-21cstates12:30:132
958699170,16cyclictest28004-21lxd11:26:532
958699170,16cyclictest26544-21munin-run07:40:012
958699170,16cyclictest25122-21tr12:20:132
958699170,16cyclictest24567-21sed12:20:012
958699170,16cyclictest24545-21/usr/sbin/munin10:25:272
958699170,16cyclictest22550-21http_loadtime10:20:142
958699170,16cyclictest21654-21cat07:30:122
958699170,16cyclictest21303-21sed12:10:212
958699170,16cyclictest1085-21gdbus07:50:212
958699170,16cyclictest0-21swapper/210:05:182
958699170,16cyclictest0-21swapper/209:17:422
958699170,16cyclictest0-21swapper/208:55:142
958699170,16cyclictest0-21swapper/208:35:182
957999176,11cyclictest0-21swapper/111:48:471
957999172,14cyclictest0-21swapper/111:54:591
9579991715,1cyclictest3987-21H222:10:211
9579991715,1cyclictest0-21swapper/107:10:211
9579991714,2cyclictest5387-21cpuspeed_turbos09:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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