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2026-03-17 - 13:00
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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 highest latencies:
System rackdslot0.osadl.org (updated Tue Mar 17, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1000699211,3cyclictest0-21swapper/220:16:252
10001992114,3cyclictest0-21swapper/121:09:341
10006992017,2cyclictest0-21swapper/221:40:172
10006992010,5cyclictest0-21swapper/221:15:132
1000199200,19cyclictest843-21systemd-network22:35:061
1000199200,17cyclictest0-21swapper/121:19:041
999799193,2cyclictest23839-21seq21:28:440
999799192,16cyclictest15938-21ntpq20:15:190
1000699194,1cyclictest0-21swapper/200:39:102
1000699192,16cyclictest31161-21sessionclean22:38:582
1000699192,16cyclictest23894-21chrt21:29:252
1000699192,16cyclictest22301-21seq20:29:412
10006991917,1cyclictest0-21swapper/222:15:142
1000699190,17cyclictest20890-21python319:30:022
10001991916,2cyclictest15874-21nfsd400:05:161
10001991916,2cyclictest15874-21nfsd400:05:151
10001991916,2cyclictest0-21swapper/120:52:281
10001991914,1cyclictest0-21swapper/120:25:211
1000199191,17cyclictest0-21swapper/120:01:351
1000199190,18cyclictest426-21systemd-udevd20:38:521
1000199190,18cyclictest426-21systemd-udevd20:38:511
999799183,9cyclictest25423-21perf22:30:000
9997991816,1cyclictest21421-21ntpq20:25:170
9997991815,2cyclictest24965-21timerandwakeup00:20:200
9997991815,2cyclictest17049-21if_lxdbr021:15:140
9997991814,3cyclictest1946-21perf00:40:000
1000699182,1cyclictest1132-21idleruntime21:45:162
10006991816,1cyclictest21780-21ntp_kernel_pll_00:15:202
10006991815,2cyclictest28202-21grep19:40:182
10006991815,2cyclictest23117-21nfsd423:20:172
10006991815,1cyclictest0-21swapper/220:04:552
10006991814,2cyclictest9679-21http_loadtime20:05:142
1000699180,17cyclictest3981-21H222:10:212
1000199182,15cyclictest12171-21timerwakeupswit19:10:211
10001991816,1cyclictest0-21swapper/121:10:181
10001991815,2cyclictest993-21dbus-daemon20:40:211
10001991815,2cyclictest4858-21ntp_kernel_pll_21:50:181
10001991815,2cyclictest20433-21processes21:20:201
10001991815,2cyclictest17008-21chrt22:12:341
10001991814,3cyclictest5308-21grep19:55:231
10001991813,4cyclictest26039-21smartctl23:25:181
1000199181,16cyclictest8482-21chrt21:59:431
1000199180,3cyclictest26664-21sessionclean19:39:001
1000199180,17cyclictest870-21systemd-logind22:23:511
9997991715,1cyclictest3981-21H222:10:210
9997991715,1cyclictest264592sleep019:37:340
9997991715,1cyclictest0-21swapper/020:10:220
9997991714,2cyclictest864-21grep22:40:200
9997991714,2cyclictest7639-21head23:50:170
9997991714,2cyclictest6614-21expr21:55:130
9997991714,2cyclictest4169-21expr23:45:150
9997991714,2cyclictest26620-21seq21:34:270
9997991714,2cyclictest16008-21perf23:10:010
9997991714,2cyclictest1522-21lxd00:30:340
9997991714,2cyclictest1522-21lxd00:30:330
9997991714,2cyclictest12430-21expr00:00:140
9997991713,2cyclictest17829-21cpuspeed_turbos22:15:150
9997991713,2cyclictest16745-21snapd22:10:500
999799171,15cyclictest0-21swapper/021:47:450
999799170,2cyclictest24276-21pzem_current20:30:180
999799170,2cyclictest1484-21snapd20:35:090
999799170,2cyclictest1484-21snapd20:35:090
999799170,1cyclictest0-21swapper/023:13:360
999799170,1cyclictest0-21swapper/021:35:220
999799170,16cyclictest3254-21if_err_enp1s022:45:150
999799170,16cyclictest32488-21ntp_kernel_pll_20:45:180
999799170,16cyclictest27982-21fschecks_count23:30:140
999799170,16cyclictest27352-21ps00:25:200
999799170,16cyclictest26878-21fschecks_time22:30:150
999799170,16cyclictest22518-21fschecks_count23:20:130
999799170,16cyclictest21599-21taskset19:30:060
999799170,16cyclictest19464-21chrt20:23:080
999799170,16cyclictest17158-21sed00:09:000
999799170,16cyclictest17158-21sed00:09:000
999799170,16cyclictest14153-21fschecks_time21:10:150
999799170,16cyclictest0-21swapper/020:10:010
10006991715,1cyclictest0-21swapper/219:45:172
10006991714,2cyclictest2796-21nfsd420:50:182
10006991714,2cyclictest25870-21/usr/sbin/munin00:25:172
10006991714,2cyclictest25810-21apt-key22:30:002
10006991714,2cyclictest25413-21seq00:24:232
10006991714,2cyclictest17928-21fschecks_count20:20:152
10006991714,2cyclictest1483-21snapd19:15:092
10006991714,2cyclictest1483-21snapd19:15:092
10006991714,2cyclictest12587-21/usr/sbin/munin22:05:162
10006991714,2cyclictest10992-21kernelversion21:05:162
1000699170,2cyclictest9589-21chrt21:04:182
1000699170,2cyclictest5008-21date22:50:002
1000699170,2cyclictest27419-21expr21:35:132
1000699170,2cyclictest25167-21iwlist19:35:172
1000699170,2cyclictest19839-21fschecks_time23:15:152
1000699170,2cyclictest18991-21munin-run23:15:012
1000699170,2cyclictest18865-21expr19:25:132
1000699170,2cyclictest15865-21latency_hist21:15:022
1000699170,2cyclictest10702-21cat22:00:222
1000699170,16cyclictest9897-21/usr/sbin/munin23:55:142
1000699170,16cyclictest9409-21expr22:55:192
1000699170,16cyclictest6446-21/usr/sbin/munin23:50:202
1000699170,16cyclictest5133-21ntpq23:45:202
1000699170,16cyclictest32692-21/usr/sbin/munin19:50:152
1000699170,16cyclictest30249-21cpuspeed_turbos23:35:142
1000699170,16cyclictest28523-21cron22:35:002
1000699170,16cyclictest24768-21sshd20:31:142
1000699170,16cyclictest21908-21pzem_voltage22:20:202
1000699170,16cyclictest17191-21nvmesmart_nvme019:20:192
1000699170,16cyclictest1525-21lxd21:32:502
1000699170,16cyclictest1-21systemd22:10:432
1000699170,16cyclictest0-21swapper/223:40:162
1000699170,16cyclictest0-21swapper/223:05:172
10001991715,1cyclictest21-21ksoftirqd/119:50:151
10001991715,1cyclictest20276-21latency_hist22:20:001
10001991715,1cyclictest0-21swapper/119:25:371
10001991714,2cyclictest3987-21H222:10:211
10001991714,2cyclictest3414-21master21:45:171
10001991714,2cyclictest31054-21sed19:45:181
10001991714,2cyclictest26448-21expr00:25:141
10001991714,2cyclictest2069-21systemd-udevd00:12:511
10001991714,2cyclictest14917-21ntpq23:05:171
10001991714,2cyclictest12845-21grep22:05:171
10001991712,1cyclictest111rcu_preempt20:05:171
1000199171,15cyclictest21-21ksoftirqd/123:35:181
1000199171,15cyclictest21-21ksoftirqd/121:37:241
1000199170,2cyclictest7610-21needreboot23:50:181
1000199170,2cyclictest25239-21seq00:22:071
1000199170,16cyclictest7616-21ls21:00:131
1000199170,16cyclictest31870-21egrep22:40:151
1000199170,16cyclictest3053-21systemd-logind19:16:531
1000199170,16cyclictest3053-21systemd-logind19:16:521
1000199170,16cyclictest28593-21/usr/sbin/munin00:30:121
1000199170,16cyclictest28593-21/usr/sbin/munin00:30:121
1000199170,16cyclictest28043-21fschecks_time23:30:151
1000199170,16cyclictest24953-21sed22:25:211
1000199170,16cyclictest22145-21expr19:30:141
1000199170,16cyclictest18346-21sed20:20:171
1000199170,16cyclictest14351-21date20:15:011
1000199170,15cyclictest0-21swapper/123:20:191
9997991614,1cyclictest0-21swapper/023:25:130
9997991614,1cyclictest0-21swapper/023:00:120
9997991614,1cyclictest0-21swapper/022:55:010
9997991614,1cyclictest0-21swapper/022:00:150
9997991614,1cyclictest0-21swapper/021:50:110
9997991614,1cyclictest0-21swapper/021:40:210
9997991614,1cyclictest0-21swapper/021:05:140
9997991614,1cyclictest0-21swapper/020:04:060
9997991614,1cyclictest0-21swapper/019:15:120
9997991614,1cyclictest0-21swapper/019:15:110
9997991614,1cyclictest0-21swapper/000:15:200
9997991614,1cyclictest0-21swapper/000:10:110
9997991613,2cyclictest908-21ls23:40:140
9997991613,2cyclictest5929-21nfsd420:55:170
999799160,2cyclictest7715-21expr21:00:120
999799160,2cyclictest3894-21expr19:55:140
999799160,1cyclictest0-21swapper/019:51:380
999799160,15cyclictest31709-21timerandwakeup19:45:220
999799160,15cyclictest30608-21expr23:35:140
999799160,15cyclictest30157-21nfsd422:35:180
999799160,15cyclictest2802-21Xwayland19:22:340
999799160,15cyclictest22084-21switchtime22:20:200
999799160,15cyclictest19458-21cat23:15:140
999799160,15cyclictest18943-21grep21:20:140
999799160,15cyclictest12333-21taskset19:11:300
999799160,15cyclictest12272-21df22:05:120
999799160,15cyclictest0-21swapper/023:55:160
999799160,15cyclictest0-21swapper/022:55:090
999799160,15cyclictest0-21swapper/020:50:140
999799160,15cyclictest0-21swapper/020:40:150
999799160,15cyclictest0-21swapper/019:30:010
10006991614,1cyclictest5482-21tr22:50:132
10006991614,1cyclictest3924-21ls21:50:132
10006991614,1cyclictest0-21swapper/221:55:202
10006991614,1cyclictest0-21swapper/220:40:182
10006991614,1cyclictest0-21swapper/200:05:132
10006991614,1cyclictest0-21swapper/200:05:122
10006991613,2cyclictest6172-21tr20:55:212
1000699160,2cyclictest19514-21df21:20:142
1000699160,2cyclictest11048-21cstates23:00:142
1000699160,1cyclictest31093-21/usr/sbin/munin20:45:132
1000699160,1cyclictest11916-21/usr/sbin/munin00:00:162
1000699160,15cyclictest4187-21smartctl19:55:172
1000699160,15cyclictest28680-21grep23:30:192
1000699160,15cyclictest0-21swapper/223:25:112
1000699160,15cyclictest0-21swapper/222:40:172
1000699160,15cyclictest0-21swapper/220:35:202
1000699160,15cyclictest0-21swapper/220:35:202
1000699160,15cyclictest0-21swapper/220:10:182
1000699160,15cyclictest0-21swapper/200:30:172
1000699160,15cyclictest0-21swapper/200:30:162
1000699160,15cyclictest0-21swapper/200:10:162
10001991614,1cyclictest6162-21if_err_eno122:50:151
10001991614,1cyclictest25573-21/usr/sbin/munin21:30:161
10001991614,1cyclictest21-21ksoftirqd/123:55:161
10001991614,1cyclictest0-21swapper/123:40:131
10001991614,1cyclictest0-21swapper/122:05:001
10001991614,1cyclictest0-21swapper/120:56:381
10001991614,1cyclictest0-21swapper/120:50:021
10001991614,1cyclictest0-21swapper/120:15:191
10001991614,1cyclictest0-21swapper/119:20:161
10001991614,1cyclictest0-21swapper/100:15:141
10001991614,1cyclictest0-21swapper/100:00:201
1000199160,1cyclictest16636-21cpuspeed_turbos23:10:131
1000199160,1cyclictest0-21swapper/122:45:161
1000199160,15cyclictest31505-21https00:35:021
1000199160,15cyclictest28482-21nfsd419:40:191
1000199160,15cyclictest1856-21systemd-udevd21:26:511
1000199160,15cyclictest10859-21grep23:00:131
1000199160,15cyclictest0-21swapper/123:45:161
1000199160,15cyclictest0-21swapper/122:55:131
1000199160,15cyclictest0-21swapper/122:30:191
1000199150,0cyclictest0-21swapper/123:15:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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