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2026-07-31 - 22:01
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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 Jul 31, 2026 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2150599250,24cyclictest0-21swapper/209:10:132
21505992421,2cyclictest24155-21sort07:15:012
2150599230,22cyclictest0-21swapper/211:30:342
21500992320,2cyclictest21-21ksoftirqd/111:12:471
2150099230,5cyclictest0-21swapper/108:22:191
2149599231,4cyclictest0-21swapper/009:45:010
2150599220,6cyclictest0-21swapper/208:28:292
2149599224,17cyclictest0-21swapper/009:39:070
21505992113,4cyclictest0-21swapper/207:45:202
2150099214,11cyclictest0-21swapper/110:20:571
2149599200,0cyclictest0-21swapper/012:25:140
2150599192,16cyclictest25072-21chrt10:02:282
2150099193,15cyclictest27462-21cat10:05:221
2150099193,15cyclictest0-21swapper/108:48:541
2150099192,2cyclictest1085-21gdbus10:40:211
2150099192,16cyclictest20012-21cpuspeed_turbos11:50:131
2150099192,16cyclictest11237-21latency_hist09:40:011
21500991917,1cyclictest0-21swapper/112:01:561
21500991917,1cyclictest0-21swapper/111:15:181
21500991917,1cyclictest0-21swapper/111:15:181
2150099190,3cyclictest0-21swapper/108:57:031
2150099190,2cyclictest4035-21H222:10:211
2149599194,9cyclictest0-21swapper/012:00:000
21495991916,2cyclictest562-21expr09:20:150
21495991916,2cyclictest0-21swapper/008:05:200
21495991911,7cyclictest870-21systemd-logind07:48:520
21505991816,1cyclictest0-21swapper/210:05:142
21505991816,1cyclictest0-21swapper/207:16:052
21505991815,2cyclictest8991-21processes12:25:192
21505991815,2cyclictest8234-21perl10:30:142
21505991814,2cyclictest17207-21nvmesmart_nvme007:55:202
21505991814,2cyclictest15945-21lxd12:12:442
2150599181,16cyclictest0-21swapper/211:25:192
2150599180,17cyclictest0-21swapper/210:48:532
2150099182,1cyclictest2054-21grep07:30:201
2150099182,15cyclictest21-21ksoftirqd/108:37:051
21500991816,1cyclictest8285-21cat09:35:001
21500991815,2cyclictest23595-21grep10:00:151
21500991815,2cyclictest21-21ksoftirqd/112:25:001
21500991814,2cyclictest1810-21grep12:15:131
2150099180,1cyclictest0-21swapper/111:40:171
2150099180,17cyclictest843-21systemd-network09:00:581
2150099180,16cyclictest3989-21H222:10:211
2149599182,16cyclictest0-21swapper/011:10:150
21495991816,1cyclictest0-21swapper/009:45:170
21495991815,2cyclictest12240-21sshd08:44:210
21495991815,2cyclictest12240-21sshd08:44:210
2149599181,2cyclictest15111-21users10:40:220
2149599181,16cyclictest3076-21iscsid08:30:010
2149599180,2cyclictest0-21swapper/010:05:150
2149599180,17cyclictest8238-21hddtemp_smartct10:30:140
2149599180,17cyclictest4559-21fschecks_count08:30:160
2149599180,17cyclictest21498-21nfsd409:55:190
21505991715,1cyclictest0-21swapper/211:50:212
21505991715,1cyclictest0-21swapper/209:26:012
21505991714,2cyclictest63002chrt07:36:112
21505991714,2cyclictest4654-21ls08:30:172
21505991714,2cyclictest455-21plymouthd08:00:222
21505991714,2cyclictest30975-21uname08:20:182
21505991714,2cyclictest29731-21ntpq12:05:192
21505991714,2cyclictest26294-21threads08:10:222
21505991714,2cyclictest2498-21awk11:20:002
21505991714,2cyclictest2498-21awk11:20:002
21505991714,2cyclictest21463-21cpuspeed_turbos10:55:142
21505991714,2cyclictest2040-21expr10:20:152
21505991714,2cyclictest17078-21netstat08:50:192
21505991714,2cyclictest1085-21gdbus09:15:202
2150599171,15cyclictest28262-21munin-run12:05:002
2150599171,15cyclictest0-21swapper/210:50:182
2150599171,15cyclictest0-21swapper/210:50:182
2150599170,2cyclictest4099-21H222:10:212
2150599170,2cyclictest31741-21expr10:15:132
2150599170,2cyclictest30058-21ls11:10:142
2150599170,2cyclictest25471-21ntpq11:00:192
2150599170,2cyclictest19811-21nfsd408:55:192
2150599170,2cyclictest17452-21cupsd09:49:352
2150599170,2cyclictest15577-21date07:55:012
2150599170,2cyclictest14677-21threads12:35:232
2150599170,2cyclictest11690-21tr09:40:132
2150599170,2cyclictest10461-21cpuspeed_turbos10:35:152
2150599170,1cyclictest0-21swapper/211:42:422
2150599170,16cyclictest6949-21latency09:30:192
2150599170,16cyclictest6210-21ntpq10:25:192
2150599170,16cyclictest3168-21proxymap07:34:022
2150599170,16cyclictest26815-21/usr/sbin/munin11:05:152
2150599170,16cyclictest24600-21expr09:05:142
2150599170,16cyclictest23617-21sed11:55:152
2150599170,16cyclictest21789-21ls09:00:152
2150599170,16cyclictest21640-21smartctl09:55:202
2150599170,16cyclictest18393-21grep11:45:182
2150599170,16cyclictest17764-21idleruntime09:50:162
2150599170,16cyclictest13017-21sort08:45:012
2150599170,16cyclictest12297-21chrt12:32:212
2150599170,16cyclictest11776-21expr11:35:132
2150599170,16cyclictest11169-21cut08:40:182
2150599170,16cyclictest11169-21cut08:40:182
2150599170,16cyclictest10182-21pzem_power09:35:222
2150599170,16cyclictest0-21swapper/208:05:202
2150599170,15cyclictest0-21swapper/211:20:162
21500991714,2cyclictest9906-21/usr/sbin/munin07:45:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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