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2026-07-20 - 11:47
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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 Mon Jul 20, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2024993027,2cyclictest0-21swapper/120:15:221
2019993014,15cyclictest7145-21missed_timers23:05:180
202499230,18cyclictest0-21swapper/100:17:231
202499230,18cyclictest0-21swapper/100:17:231
202899220,20cyclictest0-21swapper/223:18:302
202899211,17cyclictest20233-21grep19:40:162
2024992121,0cyclictest0-21swapper/123:45:161
202499210,6cyclictest20235-21fschecks_count19:40:161
202899203,16cyclictest27140-21mailstats21:45:202
2028992018,1cyclictest28-21ksoftirqd/220:37:282
2028992016,3cyclictest0-21swapper/220:54:132
2028992016,3cyclictest0-21swapper/220:10:142
202499203,16cyclictest0-21swapper/123:45:001
202499203,16cyclictest0-21swapper/121:00:361
2024992018,1cyclictest21-21ksoftirqd/123:11:101
2024992017,2cyclictest30968-21nfsd420:55:201
2024992016,3cyclictest3976-21H222:10:211
2024992014,3cyclictest0-21swapper/122:45:111
202899194,11cyclictest5084-21cat19:15:002
202899192,2cyclictest12887-21nfsd421:20:272
2028991917,1cyclictest4237-21kernelversion23:00:182
2028991917,1cyclictest0-21swapper/223:05:142
2028991917,1cyclictest0-21swapper/221:40:132
2028991916,2cyclictest9259-21ls21:15:152
2028991916,1cyclictest0-21swapper/200:25:252
202899191,17cyclictest0-21swapper/222:25:002
202899190,16cyclictest12740-21cat22:20:012
202499193,15cyclictest16735-21needreboot22:25:171
202499192,2cyclictest23895-21grep00:30:211
202499192,1cyclictest0-21swapper/122:40:211
202499192,16cyclictest3045-21basename23:55:151
202499192,16cyclictest29962-21cat21:50:211
202499192,16cyclictest1478-21chrt23:51:401
2024991919,0cyclictest0-21swapper/119:30:181
2024991917,1cyclictest0-21swapper/121:46:501
2024991917,1cyclictest0-21swapper/120:33:301
2024991917,1cyclictest0-21swapper/119:23:461
2024991916,2cyclictest2886-21iscsid21:25:201
2024991916,2cyclictest25862-21latency_hist23:40:011
2024991916,2cyclictest25576-21cut20:45:161
2024991916,1cyclictest0-21swapper/119:13:371
2024991915,3cyclictest3981-21H222:10:211
2024991915,3cyclictest3981-21H222:10:211
202499190,2cyclictest3989-21H222:10:211
202499190,1cyclictest0-21swapper/121:16:231
202499190,18cyclictest3979-21H222:10:211
202499190,18cyclictest14637-21timerandwakeup22:20:221
201999192,2cyclictest20565-21chrt22:34:350
201999192,16cyclictest3979-21H222:10:210
2019991915,3cyclictest0-21swapper/000:35:160
2019991914,3cyclictest18807-21apt-get00:25:000
201999190,16cyclictest3991-21H222:10:210
201999190,16cyclictest3983-21H222:10:210
201999190,16cyclictest3976-21H222:10:210
201999190,16cyclictest3976-21H222:10:210
201999190,16cyclictest0-21swapper/021:35:160
202899182,15cyclictest3981-21H222:10:212
2028991818,0cyclictest29864-21mii-tool23:45:162
2028991816,1cyclictest7741-21expr22:10:132
2028991816,1cyclictest0-21swapper/223:37:202
2028991816,1cyclictest0-21swapper/220:35:012
2028991816,1cyclictest0-21swapper/220:16:492
2028991815,2cyclictest4035-21H222:10:212
2028991815,2cyclictest31721-21chrt20:55:362
2028991814,3cyclictest6729-21ls19:15:182
2028991814,3cyclictest3985-21H222:10:212
2028991814,3cyclictest3983-21H222:10:212
202899181,16cyclictest31591-21cat22:50:212
202899181,16cyclictest2156-21chrt23:55:022
202899180,3cyclictest20808-21apt-config22:35:012
202899180,2cyclictest15508-21fschecks_time23:20:162
202899180,2cyclictest15508-21fschecks_time23:20:162
202899180,1cyclictest0-21swapper/200:04:022
202899180,17cyclictest5625-21sed21:09:012
202899180,17cyclictest4099-21H222:10:212
202899180,17cyclictest3989-21H222:10:212
202899180,17cyclictest3983-21H222:10:212
202899180,17cyclictest3983-21H222:10:212
202899180,17cyclictest3983-21H222:10:212
202899180,17cyclictest3976-21H222:10:212
202899180,17cyclictest3392-21sessionclean20:09:002
202899180,17cyclictest22175-21sessionclean21:39:002
202899180,15cyclictest3981-21H222:10:212
202499182,1cyclictest5121-21grep22:05:171
202499182,1cyclictest5121-21grep22:05:171
202499182,15cyclictest522-21expr22:55:141
202499182,15cyclictest4123-21cat23:00:171
202499182,15cyclictest11211-21cpuspeed_turbos00:10:131
2024991816,1cyclictest0-21swapper/120:05:191
2024991815,2cyclictest4035-21H222:10:211
2024991815,2cyclictest26128-21ls19:50:171
2024991814,3cyclictest455-21plymouthd19:50:011
2024991814,3cyclictest0-21swapper/119:19:051
2024991813,1cyclictest0-21swapper/121:14:311
202499180,3cyclictest1351-21lxd20:22:521
202499180,1cyclictest0-21swapper/121:05:331
202499180,17cyclictest6537-21awk00:00:211
202499180,17cyclictest3991-21H222:10:211
202499180,17cyclictest3981-21H222:10:211
202499180,17cyclictest30479-21tune2fs22:50:151
202499180,17cyclictest0-21swapper/122:30:151
201999182,15cyclictest3979-21H222:10:210
2019991816,1cyclictest9-21ksoftirqd/021:06:300
2019991816,1cyclictest0-21swapper/022:52:270
2019991815,2cyclictest4035-21H222:10:210
2019991815,2cyclictest3981-21H222:10:210
2019991815,2cyclictest3981-21H222:10:210
2019991814,3cyclictest3983-21H222:10:210
2019991814,3cyclictest0-21swapper/021:22:470
201999181,1cyclictest0-21swapper/021:13:060
201999180,2cyclictest3985-21H222:10:210
201999180,2cyclictest3983-21H222:10:210
201999180,2cyclictest3979-21H222:10:210
201999180,2cyclictest3979-21H222:10:210
201999180,2cyclictest3976-21H222:10:210
201999180,17cyclictest943-21basename22:00:000
201999180,17cyclictest3991-21H222:10:210
201999180,17cyclictest3989-21H222:10:210
201999180,17cyclictest10432-21awk23:10:190
201999180,16cyclictest3991-21H222:10:210
201999180,16cyclictest3976-21H222:10:210
2028991715,1cyclictest805-21which21:00:182
2028991715,1cyclictest14510-21awk21:25:132
2028991715,1cyclictest0-21swapper/221:50:072
2028991715,1cyclictest0-21swapper/219:20:232
2028991715,1cyclictest0-21swapper/200:05:192
2028991714,2cyclictest29678-21timerwakeupswit19:55:242
2028991714,2cyclictest23882-21cut19:45:192
2028991714,2cyclictest19549-21cat19:40:012
2028991714,2cyclictest18267-21cat23:25:152
2028991714,2cyclictest0-21swapper/220:25:222
202899171,1cyclictest773-21fschecks_time22:55:152
202899171,15cyclictest0-21swapper/200:10:142
202899170,2cyclictest30759-21tr20:00:132
202899170,2cyclictest17500-21cstates21:30:152
202899170,16cyclictest7304-21needreboot21:10:192
202899170,16cyclictest31364-21cstates21:55:152
202899170,16cyclictest27639-21cstates22:45:142
202899170,16cyclictest26318-21dpkg23:40:122
202899170,16cyclictest25799-21sed00:35:142
202899170,16cyclictest25200-21irqstats20:45:152
202899170,16cyclictest24588-21cstates22:40:132
202899170,16cyclictest21328-21dpkg22:35:012
202899170,16cyclictest13795-21grep00:15:132
202899170,16cyclictest13795-21grep00:15:132
202899170,16cyclictest11323-21wc19:25:142
2024991715,1cyclictest21835-21cstates20:40:131
2024991715,1cyclictest116482chrt21:20:111
2024991714,2cyclictest7713-21cstates22:10:131
2024991714,2cyclictest3989-21H222:10:211
2024991714,2cyclictest27088-21cpuspeed_turbos20:50:151
2024991714,2cyclictest22777-21/usr/sbin/munin21:40:161
2024991714,2cyclictest13381-21/usr/sbin/munin20:25:141
202499171,15cyclictest3450-21gsd-color23:05:171
202499170,2cyclictest30796-21ls20:00:131
202499170,2cyclictest25048-21chrt00:35:051
202499170,2cyclictest19173-21cat20:35:141
202499170,2cyclictest16914-21grep19:35:151
202499170,2cyclictest12932-21if_lxdbr023:15:171
202499170,2cyclictest11865-21grep19:25:151
202499170,16cyclictest7998-21apt-get00:05:171
202499170,16cyclictest21424-21pzem_power21:35:211
202499170,16cyclictest18467-21cstates23:25:151
202499170,16cyclictest17270-21cat21:30:151
202499170,16cyclictest1664-21ls22:00:131
202499170,15cyclictest0-21swapper/121:55:141
201999179,4cyclictest0-21swapper/019:15:150
201999172,1cyclictest23112chrt19:10:110
2019991715,1cyclictest0-21swapper/023:52:550
2019991714,2cyclictest8893-21chrt21:15:060
2019991714,2cyclictest455-21plymouthd21:25:130
2019991714,2cyclictest446-21perf20:05:010
2019991714,2cyclictest3991-21H222:10:210
2019991714,2cyclictest3991-21H222:10:210
2019991714,2cyclictest3989-21H222:10:210
2019991714,2cyclictest3983-21H222:10:210
2019991714,2cyclictest2555-21systemctl20:05:260
2019991714,2cyclictest2447-21cat23:55:130
2019991714,2cyclictest14005-21nfsd420:25:180
2019991714,2cyclictest12299-21awk00:10:180
2019991714,2cyclictest10634-21cstates22:15:150
2019991713,3cyclictest3976-21H222:10:210
2019991713,3cyclictest0-21swapper/021:49:300
201999171,15cyclictest0-21swapper/022:22:230
201999170,2cyclictest399-20systemd-journal22:35:010
201999170,2cyclictest3981-21H222:10:210
201999170,2cyclictest2900-21bounce22:00:180
201999170,2cyclictest25551-21awk22:40:180
201999170,16cyclictest4035-21H222:10:210
201999170,16cyclictest4035-21H222:10:210
201999170,16cyclictest31156-21ntp_states20:55:200
201999170,16cyclictest29163-21irqstats21:50:170
201999170,16cyclictest28320-21grep22:45:180
201999170,16cyclictest25225-21tr19:50:130
201999170,16cyclictest20862-21nfsd400:25:170
201999170,16cyclictest11320-21ls19:25:140
201999170,15cyclictest3991-21H222:10:210
201999170,15cyclictest3983-21H222:10:210
2028991614,1cyclictest0-21swapper/219:50:132
2019991614,1cyclictest0-21swapper/023:25:140
2019991614,1cyclictest0-21swapper/023:00:170
201999161,15cyclictest9-21ksoftirqd/023:31:560
201999160,2cyclictest17256-21grep21:30:150
201999160,1cyclictest0-21swapper/023:15:000
201999160,15cyclictest23835-21load21:40:170
201999160,15cyclictest0-21swapper/021:00:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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