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2025-12-20 - 11:04
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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 Sat Dec 20, 2025 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20371993818,19cyclictest18838-21munin-run20:05:010
20371993818,19cyclictest18838-21munin-run20:05:010
20372992614,11cyclictest0-21swapper/120:10:011
20372992513,11cyclictest4099-21H222:10:211
2037199242,3cyclictest0-21swapper/020:20:460
20371992314,8cyclictest4494-21df20:35:150
20371992314,8cyclictest19408-21apache_volume22:00:110
2037199231,16cyclictest9320-21date20:45:010
2037199230,3cyclictest22882-21sed21:09:000
2037199225,16cyclictest27925-21ntp_kernel_pll_23:10:180
20371992214,7cyclictest4057-21awk23:25:180
20371992214,7cyclictest20683-21apache_processe19:10:100
20371992214,7cyclictest20683-21apache_processe19:10:100
20371992214,7cyclictest11049-21date21:45:000
2037199221,20cyclictest197682sleep021:00:550
2037199221,1cyclictest104672chrt23:38:480
2037199221,1cyclictest0-21swapper/021:51:040
2037199220,2cyclictest20416-21date23:00:000
2037199220,21cyclictest16583-21/usr/sbin/munin22:50:180
2037199220,1cyclictest17530-21cat23:50:130
2037199220,1cyclictest0-21swapper/023:30:140
2037199220,1cyclictest0-21swapper/021:35:190
20371992114,6cyclictest6939-21date00:30:000
20371992114,6cyclictest145372sleep020:53:570
20371992114,6cyclictest1300-21lxd22:26:330
20371992114,6cyclictest12243-21pidof00:38:590
20371992114,6cyclictest0-21swapper/022:15:140
20371992114,6cyclictest0-21swapper/020:46:010
20371992114,6cyclictest0-21swapper/000:30:230
20371992113,2cyclictest7565-21cat19:44:560
20371992113,2cyclictest3134-21cat21:30:140
20371992113,1cyclictest0-21swapper/023:20:210
20371992113,1cyclictest0-21swapper/019:50:130
2037199210,2cyclictest2118-21fschecks_time00:20:160
2037199210,20cyclictest26245-21munin-run23:10:000
2037199210,1cyclictest0-21swapper/020:10:210
2037199210,19cyclictest0-21swapper/019:25:130
2037199210,16cyclictest25694-21basename20:15:170
2037199210,16cyclictest24098-21grep21:10:150
20371992014,5cyclictest3985-21H222:10:210
20371992014,5cyclictest12380-21nfsd423:40:190
20371992014,5cyclictest12357-21apt-get22:45:120
20371992014,5cyclictest0-21swapper/021:50:000
20371992014,1cyclictest0-21swapper/021:20:120
20371992014,1cyclictest0-21swapper/021:20:110
20371992014,0cyclictest0-21swapper/019:45:150
20371992013,6cyclictest22077-21perf00:00:000
20371992013,1cyclictest0-21swapper/019:15:200
20371992012,2cyclictest17371-21smartctl21:55:140
2037199200,2cyclictest31982-21sed23:20:010
2037199200,2cyclictest28544-21http21:20:010
2037199200,1cyclictest0-21swapper/023:45:230
2037199200,1cyclictest0-21swapper/022:10:160
2037199200,1cyclictest0-21swapper/019:20:070
2037199200,1cyclictest0-21swapper/000:15:130
2037199200,1cyclictest0-21swapper/000:00:230
2037199200,1cyclictest0-21swapper/000:00:230
2037199200,19cyclictest0-21swapper/022:05:180
2037199200,19cyclictest0-21swapper/020:27:330
2037199200,18cyclictest0-21swapper/023:05:000
2037199200,16cyclictest6308-21turbostat22:35:000
2037199200,15cyclictest1037-21ls20:30:160
2037199200,15cyclictest0-21swapper/022:35:140
2037199200,15cyclictest0-21swapper/000:10:140
2037199200,14cyclictest0-21swapper/022:40:220
2037199200,14cyclictest0-21swapper/022:40:210
2037399194,1cyclictest28-21ksoftirqd/221:40:212
2037399193,15cyclictest28-21ksoftirqd/220:16:072
2037299192,16cyclictest0-21swapper/119:11:511
2037299192,16cyclictest0-21swapper/119:11:511
20372991917,1cyclictest0-21swapper/122:42:461
20372991917,1cyclictest0-21swapper/122:42:461
2037299190,18cyclictest4256-21smartctl21:30:201
2037299190,16cyclictest4099-21H222:10:211
2037299190,16cyclictest3976-21H222:10:211
20371991914,4cyclictest0-21swapper/020:05:020
20371991914,4cyclictest0-21swapper/019:30:180
20371991914,4cyclictest0-21swapper/000:05:210
20371991911,2cyclictest4224-21cat19:35:240
2037199190,18cyclictest0-21swapper/022:20:130
2037199190,15cyclictest3985-21H222:10:210
2037399182,2cyclictest0-21swapper/220:46:382
2037399182,15cyclictest28-21ksoftirqd/221:52:562
2037399182,15cyclictest28-21ksoftirqd/220:02:192
2037399182,15cyclictest28-21ksoftirqd/220:02:192
20373991816,1cyclictest3981-21H222:10:212
20373991816,1cyclictest28-21ksoftirqd/219:48:162
20373991814,3cyclictest399-20systemd-journal20:42:322
20373991814,3cyclictest3991-21H222:10:212
20373991814,3cyclictest0-21swapper/221:10:532
20373991812,5cyclictest0-21swapper/223:05:132
2037399181,16cyclictest0-21swapper/200:06:012
2037399180,3cyclictest3981-21H222:10:212
2037399180,3cyclictest20328-21wc23:00:002
2037399180,2cyclictest3985-21H222:10:212
2037399180,2cyclictest3709-21qmgr23:36:592
2037399180,17cyclictest399-20systemd-journal21:20:002
20372991816,1cyclictest24437-21cat19:15:191
20372991815,3cyclictest0-21swapper/120:59:481
20372991815,3cyclictest0-21swapper/120:59:471
2037299180,17cyclictest843-21systemd-network20:18:051
2037199180,0cyclictest0-21swapper/020:55:020
2037199180,0cyclictest0-21swapper/020:55:020
2037399172,1cyclictest0-21swapper/200:20:152
20373991714,2cyclictest3976-21H222:10:212
20373991714,2cyclictest30616-21ls19:25:212
20373991714,2cyclictest30590-21awk21:20:172
20373991714,2cyclictest30590-21awk21:20:172
20373991714,2cyclictest28878-21missed_timers22:15:182
20373991714,2cyclictest26003-21wc22:10:172
20373991714,2cyclictest21109-21cpuspeed_turbos23:00:142
20373991714,2cyclictest0-21swapper/223:50:172
2037399171,15cyclictest0-21swapper/219:30:152
2037399170,2cyclictest6961-21wc00:30:002
2037399170,2cyclictest6376-21if_eno121:35:172
2037399170,2cyclictest604-21munin-plugin-st20:30:012
2037399170,2cyclictest3991-21H222:10:212
2037399170,2cyclictest3707-21master23:27:102
2037399170,2cyclictest29154-21ps20:20:212
2037399170,2cyclictest20963-21nfsd423:55:162
2037399170,1cyclictest3989-21H222:10:212
2037399170,16cyclictest7934-21nfsd422:35:192
2037399170,16cyclictest3985-21H222:10:212
2037399170,16cyclictest3976-21H222:10:212
2037399170,16cyclictest28483-21expr00:10:132
2037399170,16cyclictest24024-21cat22:05:202
2037399170,16cyclictest23957-21expr19:15:152
2037399170,16cyclictest23004-21perf21:10:012
2037399170,16cyclictest21254-21timerwakeupswit22:00:202
2037399170,16cyclictest19125-21nfsd421:00:192
2037399170,16cyclictest1495-21sed23:20:212
2037399170,16cyclictest0-21swapper/223:40:222
2037399170,15cyclictest0-21swapper/219:40:042
20372991716,1cyclictest21-21ksoftirqd/121:08:111
20372991715,1cyclictest21-21ksoftirqd/122:45:091
20372991715,1cyclictest115912sleep120:46:461
20372991715,1cyclictest0-21swapper/123:20:211
20372991715,1cyclictest0-21swapper/122:26:001
20372991715,1cyclictest0-21swapper/120:28:531
20372991715,1cyclictest0-21swapper/100:05:001
20372991715,1cyclictest0-21swapper/100:05:001
20372991714,2cyclictest399-20systemd-journal22:20:121
20372991714,2cyclictest3976-21H222:10:211
20372991714,2cyclictest31894-21latency00:15:161
20372991714,2cyclictest3053-21systemd-logind21:14:521
20372991714,2cyclictest27015-21mii-tool21:15:181
20372991714,2cyclictest23433-21nfsd420:10:181
20372991714,2cyclictest21338-21users22:00:201
20372991714,2cyclictest18548-21pzem23:50:191
20372991714,2cyclictest16471-21ntp_states22:50:171
20372991714,1cyclictest0-21swapper/119:45:141
20372991713,3cyclictest1515-21lxd23:40:321
2037299171,15cyclictest8460-21/usr/sbin/munin21:40:161
2037299171,15cyclictest21-21ksoftirqd/122:15:081
2037299171,15cyclictest113572sleep100:35:191
2037299170,2cyclictest6307-21idleruntime-cro22:35:001
2037299170,2cyclictest30741-21grep23:15:221
2037299170,2cyclictest14178-21expr23:45:141
2037299170,1cyclictest0-21swapper/122:55:051
2037299170,1cyclictest0-21swapper/119:56:351
2037299170,16cyclictest5951-21fschecks_time19:40:161
2037299170,16cyclictest4921-21cat00:25:141
2037299170,16cyclictest4035-21H222:10:211
2037299170,16cyclictest4035-21H222:10:211
2037299170,16cyclictest3979-21H222:10:211
2037299170,16cyclictest3385-21netstat19:35:201
2037299170,16cyclictest29824-21systemctl00:10:201
2037299170,16cyclictest2007-21systemd-journal21:46:211
2037299170,16cyclictest17767-21/usr/sbin/munin21:00:221
2037299170,16cyclictest1550-21snapd20:35:091
2037299170,16cyclictest1526-21lxd20:40:491
20373991615,0cyclictest0-21swapper/221:45:072
20373991614,1cyclictest30027-21idleruntime23:15:172
20373991614,1cyclictest0-21swapper/223:45:152
20373991614,1cyclictest0-21swapper/222:50:112
20373991614,1cyclictest0-21swapper/222:40:202
20373991614,1cyclictest0-21swapper/222:40:202
20373991614,1cyclictest0-21swapper/222:30:122
20373991614,1cyclictest0-21swapper/221:25:132
20373991614,1cyclictest0-21swapper/220:50:182
20373991614,1cyclictest0-21swapper/219:10:122
20373991614,1cyclictest0-21swapper/219:10:122
20373991613,2cyclictest4257-21grep21:30:202
2037399160,2cyclictest12647-21expr22:45:132
2037399160,15cyclictest4491-21df20:35:152
2037399160,15cyclictest22906-21expr00:00:172
2037399160,15cyclictest22906-21expr00:00:162
2037399160,15cyclictest0-21swapper/223:10:142
2037399160,15cyclictest0-21swapper/222:25:142
2037399160,15cyclictest0-21swapper/219:35:162
2037399160,15cyclictest0-21swapper/219:20:152
2037399160,15cyclictest0-21swapper/200:30:152
2037399160,0cyclictest0-21swapper/220:57:152
2037399160,0cyclictest0-21swapper/220:57:152
20372991614,1cyclictest0-21swapper/123:10:181
20372991614,1cyclictest0-21swapper/123:00:001
20372991614,1cyclictest0-21swapper/121:35:151
20372991614,1cyclictest0-21swapper/121:25:141
20372991614,1cyclictest0-21swapper/120:30:131
20372991614,1cyclictest0-21swapper/119:25:011
20372991613,2cyclictest8242-21/usr/sbin/munin23:35:141
20372991613,2cyclictest22115-21/usr/sbin/munin22:05:121
20372991613,2cyclictest19749-21apache_volume23:55:101
2037299160,1cyclictest28859-21/usr/sbin/munin19:25:171
2037299160,1cyclictest0-21swapper/123:25:141
2037299160,1cyclictest0-21swapper/119:30:121
2037299160,1cyclictest0-21swapper/100:30:001
2037299160,15cyclictest23949-21cat23:05:131
2037299160,15cyclictest0-21swapper/121:55:101
2037299160,15cyclictest0-21swapper/121:20:011
2037299160,15cyclictest0-21swapper/121:20:011
2037299160,15cyclictest0-21swapper/120:20:131
2037299160,15cyclictest0-21swapper/100:20:151
2037299160,15cyclictest0-21swapper/100:05:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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