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2026-08-29 - 13:08
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Sat Aug 29, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
984799230,5cyclictest0-21swapper/223:40:002
984199210,20cyclictest843-21systemd-network19:45:410
984399204,15cyclictest0-21swapper/123:56:451
984399204,15cyclictest0-21swapper/123:56:451
984399200,0cyclictest0-21swapper/121:30:161
984199200,4cyclictest29784-21latency_hist00:30:000
984799193,15cyclictest0-21swapper/223:46:132
984799192,2cyclictest31670-21chrt22:36:082
984799192,16cyclictest9397-21chrt21:58:202
9847991917,1cyclictest0-21swapper/223:58:462
9847991917,1cyclictest0-21swapper/223:58:462
984799190,3cyclictest0-21swapper/219:43:142
984399190,18cyclictest843-21systemd-network21:37:221
984399190,18cyclictest0-21swapper/123:39:471
984399190,16cyclictest4035-21H222:10:211
984399190,16cyclictest3989-21H222:10:211
984399190,16cyclictest3989-21H222:10:211
984399190,16cyclictest3983-21H222:10:211
9841991916,2cyclictest993-21dbus-daemon20:30:200
9841991916,2cyclictest993-21dbus-daemon20:30:200
9841991916,2cyclictest3053-21systemd-logind19:50:520
9841991915,3cyclictest0-21swapper/023:22:320
984199191,3cyclictest3074-21iscsid00:09:290
984199191,17cyclictest0-21swapper/000:23:200
984199190,16cyclictest4035-21H222:10:210
984799183,15cyclictest28-21ksoftirqd/222:18:122
984799182,15cyclictest0-21swapper/223:40:132
984799182,15cyclictest0-21swapper/223:10:242
9847991816,1cyclictest0-21swapper/220:13:562
9847991816,1cyclictest0-21swapper/200:26:132
9847991815,2cyclictest28-21ksoftirqd/222:58:472
9847991815,2cyclictest10123-21taskset21:02:142
9847991814,3cyclictest3991-21H222:10:212
9847991814,2cyclictest0-21swapper/220:30:182
9847991814,2cyclictest0-21swapper/220:30:182
9847991813,3cyclictest3989-21H222:10:212
984799181,1cyclictest0-21swapper/220:38:592
984799181,16cyclictest3450-21gsd-color21:35:012
984799181,16cyclictest14684-21timerandwakeup19:15:212
984799180,3cyclictest1079-21cups-browsed23:15:212
984799180,3cyclictest10151-21lxd20:42:492
984799180,2cyclictest3991-21H222:10:212
984799180,2cyclictest3987-21H222:10:212
984799180,1cyclictest0-21swapper/223:27:542
984799180,17cyclictest24568-21expr22:25:142
984399182,1cyclictest274312sleep123:27:011
984399182,15cyclictest3985-21H222:10:211
984399182,15cyclictest3450-21gsd-color00:00:141
984399182,15cyclictest21-21ksoftirqd/119:10:421
9843991814,3cyclictest3983-21H222:10:211
9843991814,2cyclictest3987-21H222:10:211
9843991810,5cyclictest0-21swapper/121:30:011
984399180,3cyclictest1041-21anvil23:42:091
984399180,2cyclictest3991-21H222:10:211
984399180,17cyclictest4035-21H222:10:211
984399180,17cyclictest31225-21sed00:30:161
984399180,15cyclictest3987-21H222:10:211
984199182,1cyclictest26843-21pluginstate21:30:190
9841991816,1cyclictest9-21ksoftirqd/023:01:400
9841991816,1cyclictest9-21ksoftirqd/022:45:130
9841991815,2cyclictest2069-21systemd-udevd23:40:510
984199180,3cyclictest14234-21awk19:15:180
984199180,17cyclictest0-21swapper/019:30:170
984199180,16cyclictest4035-21H222:10:210
984199180,16cyclictest3989-21H222:10:210
984199180,15cyclictest3985-21H222:10:210
9847991716,1cyclictest0-21swapper/221:39:502
9847991715,1cyclictest28-21ksoftirqd/219:12:472
9847991715,1cyclictest28-21ksoftirqd/200:30:412
9847991715,1cyclictest21269-21cat21:20:192
9847991715,1cyclictest10119-21grep20:05:162
9847991715,1cyclictest0-21swapper/221:15:142
9847991715,1cyclictest0-21swapper/219:20:062
9847991714,2cyclictest3979-21H222:10:212
9847991714,2cyclictest3979-21H222:10:212
9847991714,2cyclictest3979-21H222:10:212
9847991714,2cyclictest25465-21idleruntime00:20:142
9847991714,2cyclictest21331-21cat00:15:002
9847991714,2cyclictest18765-21/usr/sbin/munin19:25:152
9847991714,2cyclictest10221-21gpgv22:00:022
9847991714,2cyclictest0-21swapper/220:25:192
9847991713,3cyclictest24849-21smtpd21:28:272
984799171,1cyclictest4035-21H222:10:212
984799171,15cyclictest32555-21taskset22:40:092
984799171,15cyclictest23006-21processes19:30:222
984799171,15cyclictest0-21swapper/222:05:212
984799170,2cyclictest27672-21/usr/sbin/munin22:30:152
984799170,2cyclictest19577-21python320:25:002
984799170,16cyclictest6666-21df_inode20:00:142
984799170,16cyclictest4714-21chrt20:53:172
984799170,16cyclictest399-20systemd-journal21:50:012
984799170,16cyclictest3989-21H222:10:212
984799170,16cyclictest3989-21H222:10:212
984799170,16cyclictest3983-21H222:10:212
984799170,16cyclictest3979-21H222:10:212
984799170,16cyclictest32416-21ntp_kernel_pll_21:40:182
984799170,16cyclictest23469-21pzem_current00:15:202
984799170,16cyclictest16523-21cat22:10:122
984799170,16cyclictest16523-21cat22:10:122
984799170,16cyclictest15814-21apache_accesses00:05:112
984799170,16cyclictest1522-21lxd23:32:362
984799170,16cyclictest11705-21latency21:05:152
9843991714,2cyclictest7290-21nfsd420:00:181
9843991714,2cyclictest5912-21fschecks_count20:55:151
9843991714,2cyclictest5912-21fschecks_count20:55:151
9843991714,2cyclictest4683-21awk19:55:181
9843991714,2cyclictest3989-21H222:10:211
9843991714,2cyclictest3985-21H222:10:211
9843991714,2cyclictest3985-21H222:10:211
9843991714,2cyclictest3985-21H222:10:211
9843991714,2cyclictest3979-21H222:10:211
9843991714,2cyclictest3168-21cpuspeed_turbos22:45:151
9843991714,2cyclictest31012-21/usr/sbin/munin21:40:111
9843991714,2cyclictest23543-21awk23:20:171
9843991714,2cyclictest19115-21taskset23:10:271
9843991714,2cyclictest18195-21ntp_states21:15:181
9843991714,2cyclictest17293-21cpuspeed_turbos20:20:131
9843991714,2cyclictest14550-21snapd21:53:001
9843991714,2cyclictest14278-21ntpq19:15:191
9843991714,2cyclictest12483-21if_eno120:10:151
984399171,2cyclictest28906-21processes00:25:201
984399170,2cyclictest5225-21cut20:55:021
984399170,2cyclictest4035-21H222:10:211
984399170,2cyclictest4035-21H222:10:211
984399170,2cyclictest3991-21H222:10:211
984399170,2cyclictest3991-21H222:10:211
984399170,2cyclictest3989-21H222:10:211
984399170,2cyclictest16150-21expr00:05:131
984399170,2cyclictest14256-21apache_accesses23:05:121
984399170,1cyclictest0-21swapper/119:44:241
984399170,16cyclictest3985-21H222:10:211
984399170,16cyclictest29166-21tune2fs23:30:131
984399170,16cyclictest27851-21taskset20:37:131
984399170,16cyclictest27267-21expr22:30:131
984399170,16cyclictest2443-21/usr/sbin/munin21:45:161
984399170,16cyclictest2443-21/usr/sbin/munin21:45:161
984399170,16cyclictest23111-21mailstats22:20:201
984399170,16cyclictest22900-21latency_hist20:30:011
984399170,16cyclictest22846-21grep19:30:181
984399170,16cyclictest14730-21expr20:15:131
984399170,16cyclictest12201-21tune2fs23:00:151
984399170,16cyclictest12114-21grep21:05:171
984399170,16cyclictest0-21swapper/122:35:211
984399170,15cyclictest3987-21H222:10:211
9841991715,1cyclictest9-21ksoftirqd/021:41:480
9841991715,1cyclictest0-21swapper/020:51:590
9841991714,2cyclictest9048-21expr22:55:140
9841991714,2cyclictest7934-21munin-run21:00:010
9841991714,2cyclictest7934-21munin-run21:00:010
9841991714,2cyclictest6084-21nfsd423:45:160
9841991714,2cyclictest4862-21pzem_voltage19:55:200
9841991714,2cyclictest4035-21H222:10:210
9841991714,2cyclictest3991-21H222:10:210
9841991714,2cyclictest22400-21munin-plugin-st23:20:010
9841991714,2cyclictest15709-21awk20:15:180
9841991714,2cyclictest10597-21sort20:05:190
9841991713,3cyclictest3983-21H222:10:210
9841991713,3cyclictest14505-21snapd20:10:280
984199171,15cyclictest4035-21H222:10:210
984199171,15cyclictest4035-21H222:10:210
984199171,15cyclictest14472-21sh00:00:220
984199170,2cyclictest8378-21/usr/sbin/munin22:55:000
984199170,2cyclictest3983-21H222:10:210
984199170,2cyclictest26577-21cut23:25:180
984199170,2cyclictest26073-21cat20:35:130
984199170,2cyclictest25432-21/usr/sbin/munin19:35:180
984199170,2cyclictest18809-21/usr/sbin/munin00:10:120
984199170,2cyclictest14501-21snapd19:28:280
984199170,2cyclictest1102-21df00:35:130
984199170,1cyclictest0-21swapper/019:10:290
984199170,16cyclictest4035-21H222:10:210
984199170,16cyclictest3987-21H222:10:210
984199170,16cyclictest3985-21H222:10:210
984199170,16cyclictest3053-21systemd-logind22:30:520
984199170,16cyclictest2680-21latency_hist22:45:000
984199170,16cyclictest2255-21if_eno121:45:150
984199170,16cyclictest2255-21if_eno121:45:150
984199170,16cyclictest1856-21systemd-udevd20:48:520
984199170,16cyclictest18483-21ls21:15:200
984199170,16cyclictest14210-21cut21:10:130
984199170,16cyclictest10151-21lxd19:22:490
984199170,15cyclictest3987-21H222:10:210
9847991614,1cyclictest0-21swapper/222:50:142
9847991613,2cyclictest4019-21http_loadtime19:55:152
984799160,15cyclictest679-21expr19:50:142
984799160,15cyclictest3450-21gsd-color22:45:072
984799160,15cyclictest13888-21apt-config21:10:022
984799160,15cyclictest0-21swapper/223:20:182
984799160,15cyclictest0-21swapper/219:45:142
984799160,15cyclictest0-21swapper/200:00:132
9843991614,1cyclictest0-21swapper/121:10:021
9843991613,2cyclictest993-21dbus-daemon22:50:221
9843991613,2cyclictest8293-21cstates21:00:131
984399160,1cyclictest24319-21cpuspeed_turbos19:35:131
984399160,15cyclictest7496-21ls21:55:131
984399160,15cyclictest21348-21ps23:15:201
984399160,15cyclictest0-21swapper/122:40:161
984399160,15cyclictest0-21swapper/122:00:021
9841991614,1cyclictest24236-21apt-get22:25:140
9841991614,1cyclictest0-21swapper/023:05:140
9841991614,1cyclictest0-21swapper/022:17:230
9841991614,1cyclictest0-21swapper/020:25:150
9841991614,1cyclictest0-21swapper/000:15:000
9841991613,2cyclictest3991-21H222:10:210
9841991613,2cyclictest3991-21H222:10:210
9841991613,2cyclictest3983-21H222:10:210
9841991613,2cyclictest27545-21expr19:40:130
984199160,1cyclictest0-21swapper/021:25:010
984199160,15cyclictest7553-21expr21:55:130
984199160,15cyclictest4035-21H222:10:210
984199160,15cyclictest3989-21H222:10:210
984199160,15cyclictest0-21swapper/023:10:140
984199160,15cyclictest0-21swapper/022:36:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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