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2026-04-29 - 15:19
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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 Wed Apr 29, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17695992213,5cyclictest0-21swapper/210:40:392
1769399220,3cyclictest0-21swapper/012:05:130
17695992118,2cyclictest25539-21ntp_offset11:10:172
17695992118,2cyclictest25539-21ntp_offset11:10:172
1769599203,16cyclictest8736-21ntpq12:35:172
17694992017,2cyclictest6504-21sessionclean10:38:591
17694992017,2cyclictest3981-21H222:10:211
1769499200,18cyclictest3979-21H222:10:211
1769399208,11cyclictest0-21swapper/010:45:130
1769599193,15cyclictest3979-21H222:10:212
1769599192,16cyclictest22429-21basename12:04:592
17695991917,1cyclictest0-21swapper/210:15:182
17695991916,2cyclictest19366-21ntp_kernel_err07:10:182
1769599190,18cyclictest12842-21grep08:55:142
1769599190,18cyclictest12842-21grep08:55:132
1769599190,16cyclictest3991-21H222:10:212
1769599190,16cyclictest3989-21H222:10:212
1769499194,1cyclictest0-21swapper/108:13:581
17694991914,3cyclictest4035-21H222:10:211
1769499190,3cyclictest0-21swapper/111:29:561
1769499190,2cyclictest3989-21H222:10:211
1769499190,1cyclictest0-21swapper/112:35:171
1769499190,18cyclictest3991-21H222:10:211
1769499190,18cyclictest20472-21cat07:15:011
1769399192,1cyclictest0-21swapper/009:43:180
17693991917,1cyclictest0-21swapper/010:35:250
1769399190,16cyclictest3985-21H222:10:210
1769399190,16cyclictest3976-21H222:10:210
1769399190,16cyclictest3976-21H222:10:210
1769599182,15cyclictest0-21swapper/210:35:012
17695991817,1cyclictest28-21ksoftirqd/212:06:542
17695991816,1cyclictest28-21ksoftirqd/210:03:112
17695991815,2cyclictest5479-21php7.009:39:002
17695991815,2cyclictest3979-21H222:10:212
17695991814,2cyclictest4035-21H222:10:212
17695991813,4cyclictest0-21swapper/210:27:212
1769599181,2cyclictest3983-21H222:10:212
1769599181,1cyclictest0-21swapper/211:00:572
1769599181,16cyclictest31657-21nfsd408:30:172
1769599180,3cyclictest12148-21ntp_kernel_pll_07:55:182
1769599180,2cyclictest3981-21H222:10:212
1769599180,2cyclictest3976-21H222:10:212
1769599180,17cyclictest3985-21H222:10:212
1769599180,17cyclictest3979-21H222:10:212
1769599180,17cyclictest30969-21chrt07:31:422
1769599180,16cyclictest3983-21H222:10:212
1769599180,16cyclictest3983-21H222:10:212
1769499182,15cyclictest21-21ksoftirqd/110:16:111
17694991816,1cyclictest0-21swapper/108:40:131
17694991814,3cyclictest0-21swapper/110:10:151
17694991814,2cyclictest4099-21H222:10:211
17694991813,4cyclictest3979-21H222:10:211
1769499181,16cyclictest3991-21H222:10:211
1769499181,16cyclictest0-21swapper/110:49:591
1769499180,1cyclictest111rcu_preempt09:14:221
1769499180,17cyclictest3987-21H222:10:211
1769499180,17cyclictest3987-21H222:10:211
1769499180,17cyclictest27677-21if_eno111:15:161
1769499180,17cyclictest14550-21snapd12:05:281
1769499180,16cyclictest3983-21H222:10:211
1769499180,16cyclictest3983-21H222:10:211
1769499180,16cyclictest3981-21H222:10:211
1769499180,15cyclictest3983-21H222:10:211
1769399182,2cyclictest3987-21H222:10:210
17693991816,1cyclictest9-21ksoftirqd/007:35:360
17693991816,1cyclictest0-21swapper/012:13:300
17693991815,2cyclictest3983-21H222:10:210
17693991814,3cyclictest3985-21H222:10:210
17693991814,3cyclictest3983-21H222:10:210
17693991814,3cyclictest0-21swapper/007:21:270
1769399181,2cyclictest0-21swapper/009:20:010
17693991811,6cyclictest739-21idleruntime09:30:160
1769399181,16cyclictest7044-21nfsd411:35:170
1769399180,2cyclictest4099-21H222:10:210
1769399180,2cyclictest4099-21H222:10:210
1769399180,2cyclictest3987-21H222:10:210
1769399180,2cyclictest3985-21H222:10:210
1769399180,16cyclictest4099-21H222:10:210
1769399180,16cyclictest4099-21H222:10:210
1769399180,15cyclictest4099-21H222:10:210
1769399180,15cyclictest3979-21H222:10:210
1769399180,15cyclictest3979-21H222:10:210
17695991715,1cyclictest28-21ksoftirqd/209:45:382
17695991715,1cyclictest0-21swapper/209:40:172
17695991714,2cyclictest9584-21sendmail_mailqu07:50:192
17695991714,2cyclictest5716-21nfsd408:40:172
17695991714,2cyclictest3983-21H222:10:212
17695991714,2cyclictest3979-21H222:10:212
17695991714,2cyclictest31883-21anvil09:28:462
17695991714,2cyclictest23843-21cat07:20:132
17695991714,2cyclictest23158-21expr10:10:142
17695991714,2cyclictest14505-21snapd07:35:522
17695991714,2cyclictest1-21systemd12:16:512
1769599171,1cyclictest4099-21H222:10:212
1769599171,15cyclictest0-21swapper/211:55:152
1769599171,15cyclictest0-21swapper/211:23:322
1769599170,2cyclictest3991-21H222:10:212
1769599170,2cyclictest3053-21systemd-logind12:20:502
1769599170,2cyclictest10047-21grep08:50:132
1769599170,1cyclictest0-21swapper/209:05:172
1769599170,16cyclictest6647-21awk07:45:172
1769599170,16cyclictest5852-21cpu11:35:142
1769599170,16cyclictest3991-21H222:10:212
1769599170,16cyclictest3985-21H222:10:212
1769599170,16cyclictest3983-21H222:10:212
1769599170,16cyclictest3750-21awk07:40:192
1769599170,16cyclictest27756-21sendmail_mailqu07:25:232
1769599170,16cyclictest26522-21ls09:20:002
1769599170,16cyclictest2469-21mailstats08:35:202
1769599170,16cyclictest23585-21cron11:09:002
1769599170,16cyclictest21475-21apache_accesses09:10:112
1769599170,16cyclictest20467-21http_loadtime10:05:162
1769599170,16cyclictest1829-21systemd-journal08:05:222
1769599170,16cyclictest1829-21systemd-journal08:05:222
1769599170,16cyclictest16445-21df09:00:142
1769599170,16cyclictest15256-21threads08:00:212
1769599170,16cyclictest14215-21/usr/sbin/munin09:55:172
1769599170,16cyclictest12718-21nfsd409:50:182
1769599170,16cyclictest12718-21nfsd409:50:182
1769499172,1cyclictest21-21ksoftirqd/111:45:131
17694991715,1cyclictest21-21ksoftirqd/107:31:391
17694991715,1cyclictest21-21ksoftirqd/107:15:141
17694991715,1cyclictest0-21swapper/109:00:171
17694991714,2cyclictest30431-21/usr/sbin/munin08:30:191
17694991714,2cyclictest14919-21ntp_offset08:00:171
17694991714,2cyclictest11764-21cat07:55:181
17694991714,1cyclictest0-21swapper/110:00:171
17694991713,2cyclictest8284-21cpuspeed_turbos07:50:131
1769499171,1cyclictest0-21swapper/111:10:121
1769499171,1cyclictest0-21swapper/111:10:121
1769499171,15cyclictest0-21swapper/109:50:201
1769499171,15cyclictest0-21swapper/109:50:201
1769499170,2cyclictest4316-21nfsd411:30:151
1769499170,2cyclictest4099-21H222:10:211
1769499170,2cyclictest30591-21postgres12:18:081
1769499170,2cyclictest26434-21expr07:25:141
1769499170,2cyclictest11915-21bounce08:50:231
1769499170,1cyclictest4099-21H222:10:211
1769499170,1cyclictest3976-21H222:10:211
1769499170,1cyclictest0-21swapper/109:05:141
1769499170,16cyclictest7314-21awk09:40:181
1769499170,16cyclictest3989-21H222:10:211
1769499170,16cyclictest3989-21H222:10:211
1769499170,16cyclictest3987-21H222:10:211
1769499170,16cyclictest3985-21H222:10:211
1769499170,16cyclictest3981-21H222:10:211
1769499170,16cyclictest3979-21H222:10:211
1769499170,16cyclictest3825-21nfsd407:40:191
1769499170,16cyclictest29650-21dpkg11:20:111
1769499170,16cyclictest26934-21perf08:25:001
1769499170,16cyclictest21523-21expr11:05:131
1769499170,16cyclictest174862chrt10:57:241
1769499170,16cyclictest14215-21/usr/sbin/munin09:55:151
1769499170,16cyclictest1375-21munin-node09:46:221
1769499170,16cyclictest12683-21/usr/sbin/munin08:55:151
1769499170,16cyclictest12683-21/usr/sbin/munin08:55:151
1769499170,16cyclictest0-21swapper/112:20:151
1769499170,15cyclictest3991-21H222:10:211
1769499170,15cyclictest3991-21H222:10:211
17693991715,1cyclictest9-21ksoftirqd/008:28:300
17693991715,1cyclictest0-21swapper/011:55:170
17693991715,1cyclictest0-21swapper/011:25:150
17693991715,1cyclictest0-21swapper/011:05:130
17693991715,1cyclictest0-21swapper/007:52:020
17693991714,2cyclictest7688-21expr08:45:140
17693991714,2cyclictest4099-21H222:10:210
17693991714,2cyclictest4099-21H222:10:210
17693991714,2cyclictest4035-21H222:10:210
17693991714,2cyclictest4035-21H222:10:210
17693991714,2cyclictest3981-21H222:10:210
17693991714,2cyclictest3976-21H222:10:210
17693991714,2cyclictest31343-21/usr/sbin/munin08:30:160
17693991714,2cyclictest2038-21expr12:25:150
17693991714,2cyclictest17321-21awk10:55:220
17693991714,2cyclictest14891-21ntp_kernel_err08:00:180
17693991713,3cyclictest3981-21H222:10:210
1769399170,2cyclictest4318-21grep09:35:170
1769399170,2cyclictest3983-21H222:10:210
1769399170,2cyclictest1856-21systemd-udevd09:26:520
1769399170,2cyclictest15020-21munin-run09:00:010
1769399170,2cyclictest15020-21munin-run09:00:010
1769399170,1cyclictest3989-21H222:10:210
1769399170,1cyclictest3985-21H222:10:210
1769399170,16cyclictest4099-21H222:10:210
1769399170,16cyclictest3987-21H222:10:210
1769399170,16cyclictest3985-21H222:10:210
1769399170,16cyclictest3983-21H222:10:210
1769399170,16cyclictest3976-21H222:10:210
1769399170,16cyclictest28729-21expr12:15:130
1769399170,16cyclictest2740-21expr07:40:150
1769399170,16cyclictest21036-21sed08:10:220
17695991614,1cyclictest25903-21cpuspeed_turbos12:10:132
1769599160,15cyclictest0-21swapper/211:30:132
1769599160,15cyclictest0-21swapper/210:20:102
1769599160,15cyclictest0-21swapper/207:15:142
17694991614,1cyclictest0-21swapper/112:10:131
1769499160,1cyclictest0-21swapper/107:35:111
1769499160,1cyclictest0-21swapper/107:20:131
1769499160,15cyclictest6319-21expr11:35:141
1769499160,15cyclictest32660-21cstates09:30:141
17693991614,1cyclictest0-21swapper/010:50:140
17693991614,1cyclictest0-21swapper/007:25:150
17693991613,2cyclictest9195-21expr09:45:140
1769399161,1cyclictest101rcuc/011:20:160
1769399160,1cyclictest0-21swapper/011:40:110
1769399160,1cyclictest0-21swapper/009:00:160
1769399160,15cyclictest24625-21apache_processe08:20:100
1769399160,15cyclictest11474-21dpkg11:45:120
1769399160,15cyclictest0-21swapper/011:30:120
1769399160,15cyclictest0-21swapper/010:20:170
1769399160,15cyclictest0-21swapper/010:15:170
1769399160,15cyclictest0-21swapper/010:10:180
1769399160,15cyclictest0-21swapper/008:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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