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2026-05-01 - 01:09
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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 Apr 30, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20481993028,2cyclictest0-21swapper/111:00:011
2048199235,2cyclictest0-21swapper/112:20:151
2048199230,18cyclictest0-21swapper/107:57:041
20480992117,3cyclictest0-21swapper/007:15:020
2048199204,15cyclictest12192-21tr11:35:141
20481992017,2cyclictest20331-21ntp_kernel_pll_10:00:191
2048199200,16cyclictest4099-21H222:10:211
2048299193,2cyclictest12962-21cut10:40:002
2048299192,1cyclictest3983-21H222:10:212
2048299192,1cyclictest3983-21H222:10:212
20482991917,1cyclictest28-21ksoftirqd/208:10:112
20482991917,1cyclictest0-21swapper/209:00:002
2048299190,18cyclictest28460-21cat12:05:012
2048199193,15cyclictest21-21ksoftirqd/107:29:271
20481991917,1cyclictest0-21swapper/110:24:331
20481991914,3cyclictest3981-21H222:10:211
2048199190,18cyclictest426-21systemd-udevd09:06:521
2048199190,16cyclictest3991-21H222:10:211
2048199190,16cyclictest3985-21H222:10:211
20480991918,1cyclictest24585-21kworker/0:212:20:150
20480991915,1cyclictest0-21swapper/010:27:040
2048099191,17cyclictest5114-21grep11:20:150
2048099190,18cyclictest0-21swapper/012:16:190
2048099190,17cyclictest14693-21tr12:35:130
2048299183,1cyclictest0-21swapper/212:25:132
2048299182,15cyclictest28501-21timerwakeupswit07:20:222
20482991816,1cyclictest28-21ksoftirqd/210:13:142
20482991816,1cyclictest0-21swapper/208:43:422
20482991814,3cyclictest2129-21grep08:30:012
20482991814,3cyclictest14545-21snapd08:05:272
20482991813,1cyclictest0-21swapper/211:10:212
2048299180,2cyclictest7444-21find09:39:012
2048299180,2cyclictest3976-21H222:10:212
2048299180,17cyclictest18396-21latency09:00:172
2048299180,17cyclictest0-21swapper/208:30:112
2048299180,16cyclictest30801-21cron09:25:012
2048199182,15cyclictest0-21swapper/111:02:451
20481991816,1cyclictest28840-21timerandwakeup11:05:211
20481991816,1cyclictest0-21swapper/112:35:001
20481991815,2cyclictest3981-21H222:10:211
20481991815,2cyclictest2309-21latency_hist07:35:001
20481991815,2cyclictest19073-21awk11:45:181
20481991814,3cyclictest29169-21grep12:05:121
20481991814,3cyclictest0-21swapper/108:22:031
2048199181,16cyclictest9890-21ps08:40:181
2048199181,15cyclictest3981-21H222:10:211
2048199180,2cyclictest3981-21H222:10:211
2048199180,2cyclictest3981-21H222:10:211
2048199180,17cyclictest14505-21snapd10:45:271
2048199180,16cyclictest10572-21cut11:30:171
20480991816,1cyclictest3991-21H222:10:210
20480991815,2cyclictest7986-21cron08:40:010
20480991814,3cyclictest4035-21H222:10:210
20480991813,2cyclictest3976-21H222:10:210
2048099181,2cyclictest2128-21egrep09:30:160
2048099181,2cyclictest11947-21nfsd409:45:170
2048099180,3cyclictest14007-21python312:34:590
2048099180,17cyclictest14495-21snapd10:40:280
2048099180,17cyclictest0-21swapper/008:05:130
2048099180,16cyclictest4099-21H222:10:210
2048099180,16cyclictest25793-21nvmesmart_nvme011:00:210
2048299172,1cyclictest3983-21H222:10:212
20482991715,1cyclictest28-21ksoftirqd/207:10:412
20482991715,1cyclictest0-21swapper/211:55:172
20482991715,1cyclictest0-21swapper/210:30:002
20482991715,1cyclictest0-21swapper/210:00:292
20482991715,1cyclictest0-21swapper/208:15:172
20482991715,1cyclictest0-21swapper/207:35:232
20482991714,2cyclictest3985-21H222:10:212
20482991714,2cyclictest3983-21H222:10:212
20482991714,2cyclictest3983-21H222:10:212
20482991714,2cyclictest30610-21nfsd407:25:182
20482991714,2cyclictest25307-21kernelversion11:00:172
20482991714,2cyclictest21068-21kernelversion09:05:172
20482991713,3cyclictest3976-21H222:10:212
2048299171,15cyclictest5113-21nfsd411:20:162
2048299170,2cyclictest3976-21H222:10:212
2048299170,2cyclictest3125-21fschecks_count12:15:132
2048299170,2cyclictest27286-21cpuspeed_turbos11:05:122
2048299170,2cyclictest16595-21expr09:55:142
2048299170,2cyclictest14636-21cpuspeed_turbos12:35:122
2048299170,1cyclictest0-21swapper/212:05:142
2048299170,1cyclictest0-21swapper/211:30:122
2048299170,1cyclictest0-21swapper/210:55:202
2048299170,16cyclictest3991-21H222:10:212
2048299170,16cyclictest3989-21H222:10:212
2048299170,16cyclictest3985-21H222:10:212
2048299170,16cyclictest3977-21switchtime09:30:232
2048299170,16cyclictest28814-21/usr/sbin/munin08:20:132
2048299170,16cyclictest24082-21cpuspeed_turbos07:15:132
2048299170,16cyclictest20241-21pzem_energy10:50:182
2048299170,16cyclictest13688-21fschecks_count10:40:142
2048299170,16cyclictest10925-21cut09:45:122
2048299170,16cyclictest0-21swapper/207:55:202
20481991715,1cyclictest21-21ksoftirqd/110:54:231
20481991715,1cyclictest0-21swapper/112:25:161
20481991715,1cyclictest0-21swapper/107:15:121
20481991714,2cyclictest6233-21perf11:25:011
20481991714,2cyclictest3991-21H222:10:211
20481991714,2cyclictest3586-21nfsd409:30:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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