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2026-03-13 - 23:43
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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 Fri Mar 13, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15133992727,0cyclictest0-21swapper/009:23:110
15134992623,2cyclictest13922-21mii-tool09:00:161
15133992323,0cyclictest0-21swapper/012:00:130
1513599212,16cyclictest4243-21wc11:35:132
1513599210,18cyclictest0-21swapper/207:35:132
1513399212,17cyclictest0-21swapper/008:25:560
1513399212,17cyclictest0-21swapper/008:25:560
15133992121,0cyclictest0-21swapper/010:15:010
15133992121,0cyclictest0-21swapper/010:15:000
1513399210,5cyclictest0-21swapper/011:11:590
15134992014,5cyclictest843-21systemd-network09:26:121
15134992012,4cyclictest0-21swapper/110:25:011
1513399202,17cyclictest0-21swapper/009:10:000
15133992016,3cyclictest0-21swapper/007:11:240
1513399201,16cyclictest3991-21H222:10:210
1513399200,19cyclictest31955-21latency_hist09:35:010
1513399200,17cyclictest0-21swapper/011:35:010
15135991911,4cyclictest0-21swapper/211:54:382
1513599190,3cyclictest0-21swapper/209:10:172
1513599190,17cyclictest19947-21apache207:25:012
1513499192,16cyclictest3989-21H222:10:211
1513399193,1cyclictest31713-21awk11:25:170
1513399193,15cyclictest0-21swapper/008:20:000
1513399192,16cyclictest5632-21apt-key12:35:010
1513399192,16cyclictest3588-21sed09:40:010
15133991917,1cyclictest0-21swapper/010:35:130
15133991913,1cyclictest0-21swapper/009:55:200
1513399190,18cyclictest25219-21ntp_offset12:10:170
1513399190,18cyclictest15307-21nfsd408:05:170
1513399190,18cyclictest12766-21cat09:00:010
1513399190,16cyclictest14387-21nfsd409:00:180
1513599182,15cyclictest28-21ksoftirqd/211:17:542
1513599182,15cyclictest152962chrt09:03:422
1513599182,15cyclictest127492sleep210:50:342
1513599182,15cyclictest107482sleep207:57:592
15135991818,0cyclictest0-21swapper/208:45:162
15135991814,3cyclictest6046-21grep07:50:122
15135991814,3cyclictest2007-21systemd-journal09:56:582
15135991814,3cyclictest0-21swapper/208:50:412
15135991814,3cyclictest0-21swapper/208:50:412
1513599181,2cyclictest3351-21lxd09:26:422
1513599181,16cyclictest9643-21sshd11:45:012
1513599180,3cyclictest30212-21cron08:35:002
1513599180,2cyclictest3981-21H222:10:212
1513599180,17cyclictest3981-21H222:10:212
1513599180,15cyclictest0-21swapper/212:35:162
15134991815,2cyclictest16496-21chrt08:09:191
15134991815,2cyclictest15798-21cat07:10:131
15134991815,1cyclictest0-21swapper/108:36:141
15134991814,3cyclictest0-21swapper/111:05:191
15134991814,3cyclictest0-21swapper/109:10:201
15134991813,3cyclictest0-21swapper/109:58:161
1513499180,1cyclictest0-21swapper/109:40:011
1513499180,17cyclictest18910-21fschecks_time07:15:141
1513399182,15cyclictest8650-21cat12:40:000
1513399182,15cyclictest4991-21timerwakeupswit07:45:210
1513399182,15cyclictest36472sleep008:42:580
1513399182,15cyclictest12627-21cut11:50:000
1513399182,15cyclictest0-21swapper/011:40:020
1513399182,15cyclictest0-21swapper/010:07:360
1513399182,15cyclictest0-21swapper/008:45:140
15133991815,2cyclictest9880-21nfsd407:55:170
15133991815,2cyclictest27841-21nfsd412:15:170
15133991815,2cyclictest20539-21needreboot11:05:170
15133991813,4cyclictest843-21systemd-network11:16:200
1513399181,2cyclictest6886-21cstates09:45:150
1513399181,2cyclictest27007-21grep07:30:120
1513399181,16cyclictest23692-21cron07:25:010
1513399180,3cyclictest6249-21cstates07:50:120
1513399180,3cyclictest28358-21expr08:30:120
1513399180,3cyclictest13107-21perf10:55:000
1513399180,1cyclictest0-21swapper/012:05:120
1513399180,15cyclictest0-21swapper/011:55:130
15135991716,1cyclictest28-21ksoftirqd/212:25:592
15135991715,1cyclictest115182sleep209:54:522
15135991715,1cyclictest0-21swapper/211:00:132
15135991715,1cyclictest0-21swapper/210:36:052
15135991715,1cyclictest0-21swapper/208:35:142
15135991714,2cyclictest27960-21cpuspeed_turbos11:20:122
15135991714,2cyclictest25597-21expr08:25:142
15135991714,2cyclictest25597-21expr08:25:142
15135991714,2cyclictest22259-21/usr/sbin/munin11:10:152
15135991714,2cyclictest21727-21sed07:20:132
15135991714,2cyclictest19979-21expr08:15:132
15135991714,2cyclictest15377-21awk08:05:172
15135991714,2cyclictest10073-21cpu11:45:152
15135991713,3cyclictest863-21avahi-daemon09:35:182
1513599171,1cyclictest15701-21expr11:55:132
1513599171,15cyclictest0-21swapper/211:25:162
1513599170,2cyclictest4698-21irqstats09:40:162
1513599170,2cyclictest3754-21chrt08:44:202
1513599170,2cyclictest2286-21ntp_kernel_err11:30:172
1513599170,2cyclictest21943-21expr09:15:142
1513599170,2cyclictest20791-21ntp_states11:05:182
1513599170,2cyclictest16312-21expr09:05:132
1513599170,2cyclictest12724-21ntp_kernel_pll_08:00:172
1513599170,16cyclictest455-21plymouthd10:25:102
1513599170,16cyclictest3987-21H222:10:212
1513599170,16cyclictest31639-21grep12:25:002
1513599170,16cyclictest17934-21sort08:10:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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