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2026-06-03 - 07:54
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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 Wed Jun 03, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
976999264,1cyclictest0-21swapper/020:16:170
976999252,5cyclictest0-21swapper/021:30:000
977999240,7cyclictest0-21swapper/222:01:112
977399240,23cyclictest3305-21fschecks_count20:05:181
976999242,1cyclictest0-21swapper/023:59:300
976999230,3cyclictest23099-21python321:40:010
977999226,15cyclictest19143-21ntp_kernel_err23:25:182
977999210,20cyclictest0-21swapper/221:51:422
976999216,14cyclictest0-21swapper/019:35:150
9779992018,1cyclictest0-21swapper/220:20:362
977999200,5cyclictest0-21swapper/222:10:012
976999202,17cyclictest0-21swapper/019:45:140
9779991916,2cyclictest31868-21ntp_offset20:55:162
977999191,17cyclictest14511-21grep22:20:152
9773991916,2cyclictest915-21nfsd420:00:181
9773991914,4cyclictest0-21swapper/120:11:051
977399191,2cyclictest3085-21postgres00:14:011
977399190,18cyclictest9924-21proc_pri20:15:201
977399190,18cyclictest399-20systemd-journal19:25:011
977399190,16cyclictest3976-21H222:10:211
976999193,11cyclictest28459-21perf23:45:000
976999193,11cyclictest28459-21perf23:45:000
976999192,2cyclictest28026-21proc_pri21:45:200
9769991916,2cyclictest15965-21seq22:21:550
9779991816,1cyclictest0-21swapper/221:10:212
9779991814,3cyclictest3981-21H222:10:212
9779991814,3cyclictest2007-21systemd-journal20:45:572
977999181,2cyclictest20620-21awk22:30:182
977999181,2cyclictest1515-21lxd23:32:342
977999181,2cyclictest0-21swapper/220:10:182
977999181,16cyclictest23783-21nfsd400:30:192
977999180,2cyclictest3987-21H222:10:212
977999180,1cyclictest0-21swapper/200:07:272
977399182,2cyclictest0-21swapper/123:14:381
9773991816,1cyclictest0-21swapper/120:54:541
9773991815,2cyclictest792-21nfsd423:50:191
9773991815,2cyclictest23272-21chrt19:42:181
9773991814,3cyclictest3981-21H222:10:211
9773991814,3cyclictest0-21swapper/123:35:121
977399180,2cyclictest3989-21H222:10:211
977399180,2cyclictest3989-21H222:10:211
977399180,17cyclictest3981-21H222:10:211
977399180,17cyclictest3401-21perf21:05:001
977399180,16cyclictest3976-21H222:10:211
976999189,4cyclictest0-21swapper/020:12:160
976999182,2cyclictest24272-21chrt20:40:320
976999182,2cyclictest18536-21http_loadtime21:30:240
976999182,2cyclictest13085-21tr21:20:160
976999182,15cyclictest0-21swapper/020:55:330
976999182,15cyclictest0-21swapper/020:20:140
9769991815,2cyclictest4062-21nfsd420:05:210
976999181,16cyclictest17544-21grep23:25:000
976999180,3cyclictest18018-21awk00:20:180
976999180,2cyclictest0-21swapper/022:05:150
976999180,16cyclictest17880-21nfsd422:25:170
976999180,16cyclictest14047-21latency_hist00:15:000
977999172,1cyclictest28-21ksoftirqd/219:26:122
9779991714,2cyclictest8034-21tr23:05:202
9779991714,2cyclictest3985-21H222:10:212
9779991714,2cyclictest32103-21taskset20:00:132
9779991714,2cyclictest32023-21dpkg21:55:132
9779991714,2cyclictest22882-21sessionclean21:39:012
9779991714,2cyclictest21159-21/usr/sbin/munin19:40:122
9779991714,2cyclictest17870-21/usr/sbin/munin20:30:192
9779991714,2cyclictest1526-21lxd00:18:342
9779991714,2cyclictest1290-21kerneloops19:16:202
9779991714,2cyclictest12886-21expr00:10:192
9779991714,2cyclictest0-21swapper/221:15:212
9779991714,1cyclictest0-21swapper/222:38:592
9779991712,3cyclictest0-21swapper/200:00:182
977999171,15cyclictest28-21ksoftirqd/221:26:312
977999170,2cyclictest3580-21sed23:00:012
977999170,2cyclictest1517-21lxd19:38:502
977999170,2cyclictest15039-21/usr/sbin/munin23:20:222
977999170,16cyclictest4362-21processes20:05:232
977999170,16cyclictest4099-21H222:10:212
977999170,16cyclictest3992-21H222:10:212
977999170,16cyclictest29328-21/usr/sbin/munin19:55:142
977999170,16cyclictest28233-21cat20:50:142
977999170,16cyclictest28034-21nvmesmart_nvme019:50:182
977999170,16cyclictest26549-21sendmail_mailst22:40:202
977999170,16cyclictest24611-21ntpq23:35:172
977999170,16cyclictest2235-21awk21:00:192
977999170,16cyclictest17407-21expr19:30:102
977999170,16cyclictest1517-21lxd22:48:502
977999170,16cyclictest14500-21snapd20:43:252
977999170,16cyclictest0-21swapper/223:45:002
977999170,16cyclictest0-21swapper/223:45:002
977399172,14cyclictest0-21swapper/119:52:471
9773991716,1cyclictest21-21ksoftirqd/121:50:201
9773991715,1cyclictest118162chrt20:20:141
9773991714,2cyclictest455-21plymouthd19:34:501
9773991714,2cyclictest26759-21tr21:45:131
9773991714,2cyclictest26385-21chrt23:40:131
9773991714,2cyclictest26385-21chrt23:40:131
9773991714,2cyclictest24665-21sed22:40:011
9773991714,2cyclictest15706-21tune2fs23:20:161
977399171,16cyclictest3991-21H222:10:211
977399170,2cyclictest7837-21cut23:05:191
977399170,2cyclictest21197-21fschecks_time23:30:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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