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2026-09-20 - 00:34
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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 792 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
1879999180,2cyclictest3983-21H222:10:212
1879999180,2cyclictest3983-21H222:10:212
1879999180,17cyclictest3985-21H222:10:212
1879999180,17cyclictest0-21swapper/212:19:042
1879999180,16cyclictest4035-21H222:10:212
1879999180,15cyclictest3976-21H222:10:212
1879999180,15cyclictest0-21swapper/209:20:152
1879899182,15cyclictest3989-21H222:10:211
18798991813,1cyclictest4099-21H222:10:211
18798991813,1cyclictest0-21swapper/111:05:161
1879899180,15cyclictest3976-21H222:10:211
1879799182,15cyclictest16434-21timerandwakeup08:00:210
1879799182,15cyclictest0-21swapper/007:25:170
18797991816,1cyclictest3985-21H222:10:210
18797991815,2cyclictest3991-21H222:10:210
18797991815,2cyclictest32753-21cat07:35:110
18797991814,3cyclictest19068-21wc11:00:000
1879799180,3cyclictest15180-21nvmesmart_nvme008:55:210
1879799180,2cyclictest4099-21H222:10:210
1879799180,2cyclictest3981-21H222:10:210
1879799180,2cyclictest3979-21H222:10:210
1879799180,17cyclictest3991-21H222:10:210
1879799180,17cyclictest3989-21H222:10:210
1879799180,17cyclictest11244-21tr08:50:130
1879799180,16cyclictest3981-21H222:10:210
1879799180,15cyclictest4035-21H222:10:210
1879799180,15cyclictest4035-21H222:10:210
1879799180,15cyclictest3987-21H222:10:210
1879799180,15cyclictest3981-21H222:10:210
1879999172,1cyclictest16637-21nfsd409:55:202
18799991715,1cyclictest0-21swapper/212:20:182
18799991715,1cyclictest0-21swapper/212:20:182
18799991714,2cyclictest863-21avahi-daemon08:45:232
18799991714,2cyclictest3987-21H222:10:212
18799991714,2cyclictest3985-21H222:10:212
18799991714,2cyclictest3981-21H222:10:212
18799991714,2cyclictest3976-21H222:10:212
18799991714,2cyclictest3976-21H222:10:212
18799991714,2cyclictest20837-21/usr/sbin/munin11:00:202
18799991714,2cyclictest20837-21/usr/sbin/munin11:00:202
1879999171,15cyclictest0-21swapper/207:25:152
1879999170,2cyclictest7402-21chrt12:31:032
1879999170,2cyclictest4099-21H222:10:212
1879999170,2cyclictest4099-21H222:10:212
1879999170,2cyclictest4035-21H222:10:212
1879999170,2cyclictest4035-21H222:10:212
1879999170,2cyclictest3987-21H222:10:212
1879999170,2cyclictest3987-21H222:10:212
1879999170,2cyclictest30127-21cpuspeed_turbos07:30:122
1879999170,2cyclictest21808-21/usr/sbin/munin07:15:122
1879999170,2cyclictest1274-21runrttasks07:10:322
1879999170,1cyclictest3983-21H222:10:212
1879999170,1cyclictest3450-21gsd-color07:20:122
1879999170,1cyclictest0-21swapper/208:02:202
1879999170,16cyclictest3987-21H222:10:212
1879999170,16cyclictest3979-21H222:10:212
1879999170,16cyclictest3979-21H222:10:212
1879999170,16cyclictest30485-21nfsd410:20:182
1879999170,16cyclictest21748-21trivial-rewrite09:10:542
1879999170,16cyclictest2010-21sendmail_mailqu07:35:202
1879999170,16cyclictest16585-21nfsd411:50:182
1879999170,16cyclictest0-21swapper/210:05:132
1879999170,15cyclictest3991-21H222:10:212
1879999170,15cyclictest3991-21H222:10:212
1879999170,15cyclictest17215-21fschecks_count09:00:142
1879899170,16cyclictest7883-21fschecks_time09:40:151
1879899170,16cyclictest7883-21fschecks_time09:40:151
18797991715,1cyclictest30293-21kworker/0:210:20:200
18797991714,2cyclictest4657-21chrt12:25:410
18797991714,2cyclictest3989-21H222:10:210
18797991714,2cyclictest3989-21H222:10:210
18797991714,2cyclictest3985-21H222:10:210
18797991714,2cyclictest3985-21H222:10:210
18797991714,2cyclictest3983-21H222:10:210
18797991714,2cyclictest3979-21H222:10:210
18797991714,2cyclictest1872-21memory11:25:190
18797991714,2cyclictest1872-21memory11:25:190
18797991714,2cyclictest14495-21snapd08:08:000
18797991714,2cyclictest1-21systemd12:16:520
18797991713,3cyclictest3991-21H222:10:210
18797991713,3cyclictest3985-21H222:10:210
18797991713,3cyclictest3985-21H222:10:210
18797991712,4cyclictest870-21systemd-logind10:02:520
1879799171,1cyclictest11488-21pzem_power09:45:200
1879799170,3cyclictest4035-21H222:10:210
1879799170,3cyclictest4035-21H222:10:210
1879799170,2cyclictest4099-21H222:10:210
1879799170,2cyclictest4035-21H222:10:210
1879799170,2cyclictest3987-21H222:10:210
1879799170,2cyclictest3976-21H222:10:210
1879799170,2cyclictest3976-21H222:10:210
1879799170,2cyclictest3976-21H222:10:210
1879799170,2cyclictest27041-21latency_hist07:25:010
1879799170,16cyclictest843-21systemd-network11:11:370
1879799170,16cyclictest4099-21H222:10:210
1879799170,16cyclictest3991-21H222:10:210
1879799170,16cyclictest3981-21H222:10:210
1879799170,16cyclictest3976-21H222:10:210
1879799170,16cyclictest3976-21H222:10:210
1879799170,16cyclictest3976-21H222:10:210
1879799170,16cyclictest3976-21H222:10:210
1879799170,16cyclictest3976-21H222:10:210
1879799170,16cyclictest361-21if_enp1s010:25:160
1879799170,16cyclictest29766-21sed08:25:170
1879999160,15cyclictest4099-21H222:10:212
1879999160,15cyclictest0-21swapper/209:05:162
18797991614,1cyclictest24524-21pzem_voltage08:15:210
18797991614,1cyclictest0-21swapper/012:35:170
18797991614,1cyclictest0-21swapper/009:00:160
18797991613,2cyclictest5375-21date12:30:010
18797991613,2cyclictest22701-21cut11:05:150
1879799160,2cyclictest24218-21expr10:10:140
1879799160,15cyclictest0-21swapper/012:10:030
1879799160,15cyclictest0-21swapper/012:00:190
1879799160,15cyclictest0-21swapper/009:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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