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2026-09-20 - 02:57
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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 Sat Sep 19, 2026 12:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1879999230,5cyclictest0-21swapper/211:07:292
18798992314,3cyclictest4035-21H222:10:211
1879899230,5cyclictest0-21swapper/112:29:061
18799992222,0cyclictest0-21swapper/210:52:492
1879999220,21cyclictest870-21systemd-logind10:26:522
1879899223,16cyclictest3979-21H222:10:211
18798992214,7cyclictest3991-21H222:10:211
18798992214,2cyclictest14526-21grep10:50:161
18798992214,2cyclictest13938-21nfsd411:45:181
1879899220,21cyclictest1079-21cups-browsed12:35:221
1879899220,16cyclictest9237-21cpuspeed_turbos07:50:161
1879899220,16cyclictest3983-21H222:10:211
1879899220,15cyclictest7540-21python308:45:011
1879999210,20cyclictest843-21systemd-network12:35:402
18798992115,5cyclictest0-21swapper/108:55:181
18798992114,2cyclictest32355-21munin-run07:35:011
18798992114,1cyclictest0-21swapper/110:55:161
18798992114,1cyclictest0-21swapper/110:05:161
18798992114,1cyclictest0-21swapper/107:40:141
18798992113,7cyclictest0-21swapper/112:10:011
1879899210,2cyclictest4217-21cat09:35:011
1879899210,2cyclictest31448-21latency_hist08:30:001
1879899210,2cyclictest24399-21sshd08:15:201
1879899210,2cyclictest19772-21chrt08:09:121
1879899210,2cyclictest15839-21nfsd408:00:171
1879899210,1cyclictest18131-21plymouth09:00:191
1879899210,1cyclictest0-21swapper/112:10:171
1879899210,1cyclictest0-21swapper/110:15:261
1879899210,16cyclictest4008-21apt-key11:30:011
1879899210,16cyclictest32697-21/usr/sbin/munin12:20:161
1879899210,16cyclictest32697-21/usr/sbin/munin12:20:151
1879899210,16cyclictest26167-21cat08:20:161
1879899210,15cyclictest2293-21cat08:35:141
1879899210,15cyclictest22474-21swap12:00:241
1879899210,15cyclictest19411-21sort09:05:141
1879899210,15cyclictest0-21swapper/111:40:011
1879899210,15cyclictest0-21swapper/111:10:191
1879899210,15cyclictest0-21swapper/107:45:231
1879999201,15cyclictest22032-21needreboot12:00:202
1879899203,16cyclictest3987-21H222:10:211
18798992014,2cyclictest32412-21sendmail_mailqu09:25:211
18798992014,1cyclictest455-21plymouthd07:25:181
18798992014,1cyclictest20655-21nfsd411:00:181
18798992014,1cyclictest20655-21nfsd411:00:181
18798992014,1cyclictest0-21swapper/111:55:181
18798992014,1cyclictest0-21swapper/111:50:141
18798992014,1cyclictest0-21swapper/111:20:221
18798992014,1cyclictest0-21swapper/109:45:201
18798992014,1cyclictest0-21swapper/108:45:201
18798992012,2cyclictest27898-21cat11:15:141
18798992012,2cyclictest20489-21munin-run10:05:001
1879899200,2cyclictest4099-21H222:10:211
1879899200,2cyclictest23807-21cpu10:10:141
1879899200,2cyclictest0-21swapper/107:35:171
1879899200,1cyclictest0-21swapper/112:15:211
1879899200,16cyclictest3979-21H222:10:211
1879899200,15cyclictest31760-21cat08:30:141
1879899200,15cyclictest30804-21pzem_power10:20:201
1879899200,15cyclictest1784-21sed11:25:191
1879899200,15cyclictest1784-21sed11:25:181
1879899200,15cyclictest0-21swapper/112:35:011
1879899200,15cyclictest0-21swapper/109:55:151
1879899200,15cyclictest0-21swapper/109:20:131
18797992017,2cyclictest26068-21missed_timers09:15:200
18797992017,2cyclictest26068-21missed_timers09:15:200
18799991915,3cyclictest28-21ksoftirqd/210:45:152
18799991914,2cyclictest3983-21H222:10:212
18799991913,5cyclictest0-21swapper/210:15:152
18799991910,1cyclictest0-21swapper/209:52:412
1879999190,5cyclictest0-21swapper/212:08:252
1879999190,2cyclictest3989-21H222:10:212
1879999190,2cyclictest3987-21H222:10:212
1879999190,2cyclictest3987-21H222:10:212
1879999190,16cyclictest3985-21H222:10:212
1879999190,16cyclictest3976-21H222:10:212
18798991914,1cyclictest0-21swapper/107:55:151
18798991914,1cyclictest0-21swapper/107:55:151
18798991913,2cyclictest3979-21H222:10:211
18798991913,2cyclictest3979-21H222:10:211
1879899190,2cyclictest3991-21H222:10:211
1879899190,16cyclictest3979-21H222:10:211
1879899190,15cyclictest0-21swapper/107:15:201
1879899190,14cyclictest0-21swapper/110:25:181
1879799192,16cyclictest20313-21nfsd407:10:180
18797991916,2cyclictest17041-21mailstats09:55:230
1879799190,16cyclictest3985-21H222:10:210
1879799190,16cyclictest3985-21H222:10:210
1879799190,16cyclictest3979-21H222:10:210
1879799190,16cyclictest3976-21H222:10:210
1879999182,15cyclictest3983-21H222:10:212
1879999182,15cyclictest3979-21H222:10:212
1879999182,15cyclictest28-21ksoftirqd/210:00:412
18799991817,1cyclictest28-21ksoftirqd/212:25:552
18799991816,1cyclictest28-21ksoftirqd/208:19:222
18799991815,2cyclictest3989-21H222:10:212
18799991815,2cyclictest26886-21chrt11:10:382
18799991814,3cyclictest4035-21H222:10:212
18799991814,3cyclictest4035-21H222:10:212
1879999181,2cyclictest27994-21taskset08:24:342
1879999180,2cyclictest3991-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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