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2026-06-11 - 17:25
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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 Thu Jun 11, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1564299233,9cyclictest0-21swapper/008:50:020
1564299230,18cyclictest0-21swapper/009:20:010
1564299212,15cyclictest0-21swapper/010:22:180
1564299204,6cyclictest0-21swapper/011:41:320
1564299203,16cyclictest3979-21H222:10:210
1564299200,18cyclictest0-21swapper/010:25:310
1564299200,18cyclictest0-21swapper/008:15:560
15651991917,1cyclictest28-21ksoftirqd/210:11:542
15651991916,2cyclictest8381-21needreboot11:40:162
1565199190,3cyclictest0-21swapper/211:54:062
15647991914,2cyclictest3987-21H222:10:211
15642991917,1cyclictest0-21swapper/012:37:450
15642991915,3cyclictest0-21swapper/008:27:500
1564299191,16cyclictest14368-21cut11:50:170
1565199182,15cyclictest5495-21nfsd411:35:172
1565199182,15cyclictest0-21swapper/210:45:102
15651991815,2cyclictest21556-21nfsd408:15:182
15651991815,2cyclictest20695-21chrt12:02:282
15651991815,2cyclictest15071-21sendmail-msp10:00:002
15651991815,1cyclictest0-21swapper/208:03:012
15651991814,3cyclictest4099-21H222:10:212
1565199180,2cyclictest4035-21H222:10:212
1565199180,17cyclictest32585-21df10:30:132
1565199180,0cyclictest0-21swapper/208:20:162
1564799182,15cyclictest12033-21egrep08:00:131
1564799182,15cyclictest0-21swapper/108:30:461
15647991815,2cyclictest20840-21trivial-rewrite07:17:381
15647991815,1cyclictest0-21swapper/111:30:181
15647991814,3cyclictest6828-21awk11:40:011
15647991814,3cyclictest0-21swapper/110:20:131
1564799181,16cyclictest22848-21wc10:10:221
1564799180,3cyclictest4099-21H222:10:211
1564799180,2cyclictest3991-21H222:10:211
1564799180,17cyclictest4035-21H222:10:211
1564799180,17cyclictest15985-21nfsd408:05:181
1564799180,17cyclictest0-21swapper/112:05:201
1564799180,15cyclictest3983-21H222:10:211
1564299182,2cyclictest10137-21grep11:45:110
1564299182,15cyclictest0-21swapper/011:26:490
15642991816,1cyclictest352-21jbd2/nvme0n1p2-10:00:010
15642991816,1cyclictest0-21swapper/011:00:580
15642991815,2cyclictest6066-21find09:40:190
15642991815,2cyclictest4099-21H222:10:210
15642991815,2cyclictest24774-21switchtime08:20:210
15642991814,3cyclictest1348-21lxd08:34:430
1564299180,2cyclictest3979-21H222:10:210
1564299180,17cyclictest14272-21cat08:05:000
1564299180,16cyclictest455-21plymouthd11:30:170
1565199172,15cyclictest28-21ksoftirqd/211:20:132
15651991716,1cyclictest28-21ksoftirqd/208:40:212
15651991715,1cyclictest16252-21expr07:10:142
15651991715,1cyclictest15477-21needreboot09:00:172
15651991715,1cyclictest15477-21needreboot09:00:172
15651991715,1cyclictest0-21swapper/212:20:122
15651991714,2cyclictest7031-21awk08:45:172
15651991714,2cyclictest4035-21H222:10:212
15651991714,2cyclictest3983-21H222:10:212
15651991714,2cyclictest3983-21H222:10:212
15651991714,2cyclictest27447-21chrt09:21:212
15651991714,2cyclictest26532-21/usr/sbin/munin10:20:172
15651991714,1cyclictest0-21swapper/207:53:222
15651991713,3cyclictest3987-21H222:10:212
1565199171,15cyclictest3981-21H222:10:212
1565199171,15cyclictest1254-21cpuspeed_turbos11:30:142
1565199170,3cyclictest0-21swapper/209:36:072
1565199170,2cyclictest3983-21H222:10:212
1565199170,2cyclictest28845-21/usr/sbin/munin08:30:152
1565199170,2cyclictest20658-21turbostat10:10:002
1565199170,2cyclictest10295-21expr11:45:132
1565199170,16cyclictest929-21awk12:25:162
1565199170,16cyclictest6561-21irqstats10:40:182
1565199170,16cyclictest4818-21taskset10:37:092
1565199170,16cyclictest3989-21H222:10:212
1565199170,16cyclictest3989-21H222:10:212
1565199170,16cyclictest3165-21tr12:30:132
1565199170,16cyclictest31449-21df_inode09:30:122
1565199170,16cyclictest31113-21expr11:25:132
1565199170,16cyclictest3053-21systemd-logind09:54:512
1565199170,16cyclictest28871-21proc_pri07:30:222
1565199170,16cyclictest28181-21cut12:15:172
1565199170,16cyclictest24116-21munin-run12:10:002
1565199170,16cyclictest22032-21sed11:09:012
1565199170,16cyclictest19326-21perf11:05:002
1565199170,16cyclictest15396-21fschecks_time08:05:152
1565199170,16cyclictest11779-21grep10:50:142
1565199170,16cyclictest0-21swapper/209:18:002
1565199170,16cyclictest0-21swapper/208:50:192
1565199170,15cyclictest0-21swapper/207:59:082
1564799172,15cyclictest21-21ksoftirqd/111:10:531
1564799172,15cyclictest21-21ksoftirqd/111:10:531
15647991714,2cyclictest8273-21cupsd12:38:351
15647991714,2cyclictest7614-21ls09:45:131
15647991714,2cyclictest3983-21H222:10:211
15647991714,2cyclictest3983-21H222:10:211
15647991714,2cyclictest31570-21fw_packets09:30:131
15647991714,2cyclictest24342-21ls09:15:211
15647991714,2cyclictest23112-21egrep08:20:141
15647991712,2cyclictest3991-21H222:10:211
1564799171,1cyclictest0-21swapper/108:15:131
1564799171,15cyclictest3983-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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