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2026-01-06 - 21:37
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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 Tue Jan 06, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3070699233,19cyclictest29519-21awk10:00:002
3069699230,8cyclictest32759-21sed11:00:210
3069699230,5cyclictest32243-21latency_hist10:05:000
3069699230,22cyclictest9196-21ls11:15:190
3069699230,22cyclictest25157-21latency_hist08:55:010
3069699230,22cyclictest2007-21systemd-journal12:39:160
3069699230,22cyclictest11862-21systemctl09:25:220
3070699226,15cyclictest0-21swapper/210:23:462
3069699222,19cyclictest28912-21timerandwakeup11:50:200
30696992214,7cyclictest3987-21H222:10:210
30696992214,7cyclictest29021-21fschecks_time10:55:180
30696992214,7cyclictest15773-21tr08:35:200
3069699220,7cyclictest3188-21mailstats11:05:180
3069699220,7cyclictest14720-21cat07:35:210
3069699220,21cyclictest7937-21cat09:20:130
3069699220,21cyclictest75612chrt07:25:140
3069699220,21cyclictest6782-21expr10:15:130
3069699220,21cyclictest4549-21awk08:15:180
3069699220,21cyclictest27120-21ps08:55:190
3069699220,21cyclictest235782chrt07:53:320
3069699220,21cyclictest22287-21chrt10:42:550
3069699220,21cyclictest2060-21switchtime10:05:210
3069699220,21cyclictest20113-21open_inodes07:45:190
3069699220,21cyclictest18596-21/usr/sbin/munin09:40:190
3069699220,21cyclictest18133-21munin-plugin-st11:35:000
3069699220,21cyclictest15751-21awk10:30:180
3069699220,21cyclictest15394-21munin-run09:35:000
3069699220,21cyclictest1221-21sed07:15:020
3069699220,21cyclictest12003-21sed11:20:220
3069699220,21cyclictest0-21swapper/012:05:150
3069699220,21cyclictest0-21swapper/012:00:160
3069699220,21cyclictest0-21swapper/011:55:150
30706992117,3cyclictest0-21swapper/208:36:392
30696992114,6cyclictest29183-21pluginstate08:05:010
30696992114,6cyclictest1510-21awk08:10:170
3069699210,20cyclictest7645-21ntpq12:10:180
3069699210,20cyclictest20922-21latency_hist09:45:010
3069699210,20cyclictest19037-21sed12:30:200
3069699210,20cyclictest12007-21sed07:30:190
3069699210,20cyclictest11113-21taskset12:17:370
3069699210,20cyclictest0-21swapper/011:45:140
3069699210,20cyclictest0-21swapper/010:50:140
3069699210,20cyclictest0-21swapper/010:10:150
3069699210,20cyclictest0-21swapper/009:55:130
3069699210,20cyclictest0-21swapper/008:40:200
3069699210,20cyclictest0-21swapper/008:30:020
3069699210,20cyclictest0-21swapper/007:40:150
3069699210,20cyclictest0-21swapper/007:20:190
3070699204,15cyclictest0-21swapper/210:35:002
3069699200,6cyclictest0-21swapper/009:05:160
3069699200,5cyclictest0-21swapper/007:15:130
3069699200,19cyclictest25543-21sed09:50:170
3069699200,19cyclictest22896-21cut11:40:210
3069699200,19cyclictest0-21swapper/012:25:130
3069699200,19cyclictest0-21swapper/012:20:140
3069699200,19cyclictest0-21swapper/011:35:120
3069699200,19cyclictest0-21swapper/011:29:480
3069699200,19cyclictest0-21swapper/011:10:160
3069699200,19cyclictest0-21swapper/010:45:130
3069699200,19cyclictest0-21swapper/010:39:000
3069699200,19cyclictest0-21swapper/009:10:150
3069699200,19cyclictest0-21swapper/009:00:130
3069699200,19cyclictest0-21swapper/008:47:530
3069699200,19cyclictest0-21swapper/008:30:110
3069699200,19cyclictest0-21swapper/008:20:150
3069699200,19cyclictest0-21swapper/008:06:390
3069699200,19cyclictest0-21swapper/007:55:180
30701991917,1cyclictest0-21swapper/111:45:101
30701991916,1cyclictest0-21swapper/110:50:541
30696991917,1cyclictest0-21swapper/010:20:000
30696991914,4cyclictest0-21swapper/009:39:080
3069699190,18cyclictest0-21swapper/010:25:130
3070699182,15cyclictest29409-21cut08:05:012
30706991815,2cyclictest3983-21H222:10:212
30706991814,3cyclictest1377-21lxd10:26:432
3070699181,2cyclictest7583-21nfsd412:10:182
3070699181,16cyclictest1517-21lxd11:48:432
3070699180,3cyclictest5002-21grep09:15:132
3070699180,2cyclictest1394-21apt07:15:132
3070699180,17cyclictest3989-21H222:10:212
3070699180,16cyclictest3991-21H222:10:212
3070199182,15cyclictest0-21swapper/107:15:111
30701991815,2cyclictest31825-21idleruntime11:00:151
30701991815,2cyclictest21474-21apt-key09:45:011
30701991813,3cyclictest0-21swapper/111:27:451
30701991813,3cyclictest0-21swapper/110:11:361
3070199181,2cyclictest7582-21grep12:10:171
30701991812,3cyclictest0-21swapper/111:15:121
3070199180,2cyclictest17661-21df08:40:161
3070199180,17cyclictest7033-21turbostat11:14:591
3070199180,17cyclictest4061-21fschecks_time12:05:141
3070199180,17cyclictest3989-21H222:10:211
30706991715,1cyclictest20246-21switchtime09:40:212
30706991714,2cyclictest9175-21switchtime09:20:222
30706991714,2cyclictest4100-21H222:10:212
30706991714,2cyclictest3979-21H222:10:212
30706991714,2cyclictest31236-21sort09:05:142
30706991714,2cyclictest30219-21expr11:55:162
30706991714,2cyclictest26829-21apt-key11:50:022
30706991714,2cyclictest24827-21perl07:55:162
30706991714,2cyclictest23849-21cut08:50:192
30706991714,2cyclictest22043-21expr09:45:142
30706991714,2cyclictest20604-21uptime07:45:212
30706991714,2cyclictest12239-21expr12:20:132
30706991714,2cyclictest10945-21cut07:30:132
30706991714,1cyclictest0-21swapper/212:01:182
30706991714,1cyclictest0-21swapper/209:00:152
3070699170,2cyclictest9529-21cron11:17:012
3070699170,2cyclictest8696-21date08:25:012
3070699170,2cyclictest7818-21expr07:25:142
3070699170,2cyclictest4290-21kernelversion12:05:162
3070699170,2cyclictest4035-21H222:10:212
3070699170,2cyclictest4035-21H222:10:212
3070699170,2cyclictest3991-21H222:10:212
3070699170,2cyclictest3989-21H222:10:212
3070699170,2cyclictest22521-21sed10:45:002
3070699170,2cyclictest16915-21netstat09:35:182
3070699170,2cyclictest11478-21netstat09:25:202
3070699170,2cyclictest10597-21mailstats12:15:192
3070699170,16cyclictest3981-21H222:10:212
3070699170,16cyclictest3976-21H222:10:212
3070699170,16cyclictest31048-21/usr/sbin/munin11:00:212
3070699170,16cyclictest26634-21chrt09:53:232
3070699170,16cyclictest21188-21munin-plugin-st11:40:012
3070699170,16cyclictest1516-21lxd10:52:432
3070699170,16cyclictest13749-21awk11:25:162
3070699170,15cyclictest4035-21H222:10:212
3070199172,1cyclictest0-21swapper/108:30:531
3070199172,15cyclictest0-21swapper/112:20:171
30701991715,1cyclictest9415-21timerwakeupswit09:20:211
30701991715,1cyclictest10289-21nfsd410:20:161
30701991714,2cyclictest781-21smartctl08:10:151
30701991714,2cyclictest31133-21grep11:55:201
30701991714,2cyclictest29655-21cut09:00:161
30701991714,2cyclictest27851-21fschecks_time09:55:141
30701991714,2cyclictest24684-21expr07:55:151
30701991714,2cyclictest23236-21hddtemp_smartct08:50:161
30701991714,2cyclictest22252-21sort12:39:011
30701991714,2cyclictest18580-21expr11:35:131
30701991714,2cyclictest1550-21snapd11:20:091
30701991714,2cyclictest10252-21/usr/sbin/munin09:25:161
3070199170,2cyclictest26825-21cut08:55:181
3070199170,2cyclictest21946-21expr07:50:141
3070199170,2cyclictest21201-21memory10:40:161
3070199170,2cyclictest1865-21cat11:05:121
3070199170,2cyclictest1516-21lxd07:46:431
3070199170,2cyclictest12727-21sed10:25:171
3070199170,1cyclictest0-21swapper/112:30:021
3070199170,1cyclictest0-21swapper/110:59:541
3070199170,1cyclictest0-21swapper/108:25:191
3070199170,1cyclictest0-21swapper/107:36:231
3070199170,16cyclictest7248-21cut10:15:161
3070199170,16cyclictest4035-21H222:10:211
3070199170,16cyclictest3833-21fschecks_time08:15:151
3070199170,16cyclictest31945-21sed07:10:161
3070199170,16cyclictest23436-21chrt11:43:121
3070199170,16cyclictest17376-21grep11:30:201
3070199170,16cyclictest16570-21proxymap08:39:171
3070199170,16cyclictest13307-21expr09:30:131
3070199170,16cyclictest11707-21latency_hist12:20:011
3070199170,15cyclictest3989-21H222:10:211
30706991614,1cyclictest15926-21/usr/sbin/munin07:40:182
30706991614,1cyclictest0-21swapper/211:40:162
30706991614,1cyclictest0-21swapper/207:35:152
30706991614,1cyclictest0-21swapper/207:20:162
30706991613,2cyclictest21527-21grep07:50:152
3070699160,2cyclictest30445-21expr10:00:152
3070699160,1cyclictest17194-21apt-get12:30:132
3070699160,1cyclictest0-21swapper/210:45:122
3070699160,1cyclictest0-21swapper/210:15:162
3070699160,1cyclictest0-21swapper/208:30:182
3070699160,1cyclictest0-21swapper/208:05:132
3070699160,15cyclictest3803-21fschecks_count08:15:152
3070699160,15cyclictest3067-21cat10:10:002
3070699160,15cyclictest0-21swapper/211:05:112
3070699160,15cyclictest0-21swapper/210:10:142
3070699160,15cyclictest0-21swapper/209:10:152
3070699160,15cyclictest0-21swapper/208:55:022
3070699160,15cyclictest0-21swapper/208:45:122
30701991614,1cyclictest0-21swapper/111:50:121
30701991614,1cyclictest0-21swapper/110:45:151
30701991614,1cyclictest0-21swapper/110:08:311
30701991614,1cyclictest0-21swapper/109:10:171
30701991614,1cyclictest0-21swapper/107:20:151
30701991613,2cyclictest16659-21sh07:40:141
3070199160,2cyclictest10341-21grep07:30:121
3070199160,1cyclictest0-21swapper/112:00:161
3070199160,15cyclictest6322-21expr08:20:141
3070199160,15cyclictest455-21plymouthd12:25:041
3070199160,15cyclictest18664-21open_files10:35:191
3070199160,15cyclictest14500-21munin-node10:30:111
3070199160,15cyclictest0-21swapper/109:50:131
3070199160,15cyclictest0-21swapper/109:15:111
3070199160,15cyclictest0-21swapper/108:45:141
3070199160,15cyclictest0-21swapper/108:05:161
3070199160,15cyclictest0-21swapper/108:00:191
3070199160,15cyclictest0-21swapper/107:25:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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