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2026-01-03 - 16:44
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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 Jan 03, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151399240,5cyclictest0-21swapper/211:15:192
151199244,13cyclictest0-21swapper/007:59:520
151399220,17cyclictest20726-21cpuspeed_turbos11:30:152
151399202,15cyclictest0-21swapper/209:37:452
151399202,15cyclictest0-21swapper/207:40:172
1512992014,5cyclictest0-21swapper/111:05:221
1513991914,3cyclictest4051-21nfsd411:55:162
1512991916,1cyclictest0-21swapper/107:20:261
1512991915,3cyclictest0-21swapper/109:10:221
1512991915,1cyclictest0-21swapper/111:33:331
151299190,18cyclictest843-21systemd-network07:36:391
1511991915,3cyclictest0-21swapper/010:26:050
1511991914,4cyclictest0-21swapper/009:50:010
1513991816,1cyclictest28-21ksoftirqd/210:43:092
1513991816,1cyclictest17703-21expr11:25:132
1513991816,1cyclictest13503-21grep08:25:192
1513991815,2cyclictest14763-21nfsd407:30:182
151399180,17cyclictest2718-21fschecks_count10:00:172
151399180,17cyclictest2718-21fschecks_count10:00:162
151399180,17cyclictest16628-21apache_accesses12:20:102
151399180,15cyclictest29819-21cat10:50:012
1512991815,2cyclictest4035-21H222:10:211
1512991815,2cyclictest399-20systemd-journal08:46:311
1512991815,2cyclictest14796-21grep10:20:181
1512991815,2cyclictest0-21swapper/111:45:171
1512991815,2cyclictest0-21swapper/111:45:171
151299180,17cyclictest2069-21systemd-udevd11:12:521
151299180,16cyclictest2872-21systemd-logind09:58:511
151299180,15cyclictest3981-21H222:10:211
151199182,15cyclictest28495-21nfsd410:45:170
151199182,15cyclictest13736-21pluginstate08:25:210
1511991815,2cyclictest30043-21cpuspeed_turbos08:00:150
1511991815,1cyclictest0-21swapper/012:04:160
1511991814,3cyclictest0-21swapper/008:55:140
151199180,2cyclictest4035-21H222:10:210
151199180,17cyclictest4035-21H222:10:210
151199180,17cyclictest24748-21nfsd409:40:160
1513991715,1cyclictest0-21swapper/212:35:112
1513991715,1cyclictest0-21swapper/212:30:132
1513991715,1cyclictest0-21swapper/210:25:152
1513991715,1cyclictest0-21swapper/208:05:082
1513991715,1cyclictest0-21swapper/207:45:212
1513991714,2cyclictest5450-21ls07:15:162
1513991714,2cyclictest426-21systemd-udevd07:21:512
1513991714,2cyclictest3987-21H222:10:212
1513991714,2cyclictest3981-21H222:10:212
1513991714,2cyclictest31626-21apache_accesses11:50:112
1513991714,2cyclictest30821-21nfsd408:55:182
1513991714,2cyclictest3053-21systemd-logind08:43:512
1513991714,2cyclictest3053-21systemd-logind07:26:512
1513991714,2cyclictest27662-21processes09:45:192
1513991714,2cyclictest17731-21perf08:35:012
1513991714,1cyclictest13415-21proc_pri09:20:202
151399171,2cyclictest10343-21nfsd411:10:172
151399171,15cyclictest0-21swapper/211:35:142
151399170,2cyclictest30012-21cpuspeed_turbos08:00:132
151399170,2cyclictest28475-21cron11:49:552
151399170,2cyclictest28475-21cron11:49:542
151399170,2cyclictest19740-21expr12:25:152
151399170,2cyclictest17785-21/usr/sbin/munin09:30:142
151399170,2cyclictest1483-21snapd10:05:082
151399170,2cyclictest11624-21cat10:15:152
151399170,1cyclictest0-21swapper/209:25:142
151399170,16cyclictest7962-21pzem_voltage09:10:252
151399170,16cyclictest7109-21sendmail_mailst12:00:212
151399170,16cyclictest7006-21idleruntime11:05:172
151399170,16cyclictest3982-21H222:10:212
151399170,16cyclictest3495-21proc_pri07:10:212
151399170,16cyclictest31947-21vmstat10:50:232
151399170,16cyclictest24494-21apache_volume07:50:132
151399170,16cyclictest24115-21fschecks_time09:40:142
151399170,16cyclictest18866-21http_loadtime08:35:142
151399170,16cyclictest1718-21expr09:00:202
151399170,16cyclictest15247-21ntpq12:15:192
151399170,16cyclictest12460-21awk12:10:182
1512991715,1cyclictest21-21ksoftirqd/109:03:511
1512991714,2cyclictest9534-21grep12:05:181
1512991714,2cyclictest890-21awk08:05:141
1512991714,2cyclictest3987-21H222:10:211
1512991714,2cyclictest28468-21munin-run09:50:011
1512991714,2cyclictest20153-21grep10:30:181
1512991714,2cyclictest2007-21systemd-journal12:18:321
1512991714,2cyclictest19248-21cpuspeed_turbos07:40:141
1512991714,2cyclictest10999-21timerandwakeup09:15:221
151299171,1cyclictest0-21swapper/112:30:171
151299171,15cyclictest7501-21chrt12:00:281
151299170,2cyclictest5364-21switchtime08:10:221
151299170,2cyclictest426-21systemd-udevd08:33:521
151299170,2cyclictest24049-21idleruntime11:35:171
151299170,16cyclictest4672-21sed11:55:191
151299170,16cyclictest3784-21proc_pri10:00:221
151299170,16cyclictest3784-21proc_pri10:00:221
151299170,16cyclictest31207-21awk08:00:191
151299170,16cyclictest3053-21systemd-logind07:50:511
151299170,16cyclictest3053-21systemd-logind07:32:511
151299170,16cyclictest2872-21systemd-logind07:46:511
151299170,16cyclictest26333-21expr11:40:141
151299170,16cyclictest2069-21systemd-udevd08:44:511
151299170,16cyclictest1516-21lxd08:36:431
151299170,16cyclictest11687-21chrt08:22:371
151299170,16cyclictest0-21swapper/110:05:211
151199172,15cyclictest9-21ksoftirqd/011:32:420
1511991715,1cyclictest0-21swapper/010:04:560
1511991715,1cyclictest0-21swapper/010:04:550
1511991715,1cyclictest0-21swapper/009:30:000
1511991714,2cyclictest6825-21expr09:10:170
1511991714,2cyclictest574-21nvmesmart_nvme009:55:200
1511991714,2cyclictest3968-21nfsd411:55:170
1511991714,2cyclictest3450-21gsd-color11:10:010
1511991714,2cyclictest27765-21mailstats11:40:210
1511991714,2cyclictest19444-21chrt11:27:360
1511991714,2cyclictest18474-21ls08:35:120
1511991714,2cyclictest17756-21sed12:20:150
1511991714,2cyclictest16234-21awk12:20:010
1511991714,2cyclictest16020-21grep11:20:180
1511991714,2cyclictest16020-21grep11:20:180
1511991714,2cyclictest13215-21nfsd411:15:160
1511991714,2cyclictest11793-21cat11:15:000
1511991712,4cyclictest18597-21latency_hist07:40:010
151199171,1cyclictest0-21swapper/008:45:180
151199171,15cyclictest22971-21pzem_energy08:40:210
151199171,15cyclictest13366-21cut10:20:000
151199171,15cyclictest0-21swapper/008:24:240
151199170,2cyclictest8512-21anvil09:15:410
151199170,2cyclictest24801-21acpi12:35:120
151199170,2cyclictest24516-21latency_hist12:35:000
151199170,2cyclictest20373-21latency_hist09:35:010
151199170,2cyclictest1300-21lxd11:54:420
151199170,1cyclictest0-21swapper/009:21:340
151199170,16cyclictest9007-21wget12:05:150
151199170,16cyclictest3987-21H222:10:210
151199170,16cyclictest3764-21cat11:00:140
151199170,16cyclictest29321-21ls09:50:170
151199170,16cyclictest26965-21latency_hist07:55:000
151199170,16cyclictest2007-21systemd-journal10:37:150
151199170,16cyclictest1521-21lxd09:04:430
151199170,16cyclictest12627-21awk07:25:240
151199170,16cyclictest1254-21kernelversion08:05:170
1513991614,1cyclictest9191-21apache_accesses09:15:112
1513991613,2cyclictest4035-21H222:10:212
1513991613,2cyclictest31662-21ls09:55:152
1513991613,2cyclictest16123-21pzem_current11:20:182
1513991613,2cyclictest16123-21pzem_current11:20:182
1513991613,2cyclictest1079-21cups-browsed09:50:232
151399160,1cyclictest0-21swapper/210:20:152
151399160,1cyclictest0-21swapper/208:18:002
151399160,15cyclictest5964-21cat08:14:562
151399160,15cyclictest28576-21tr07:55:202
151399160,15cyclictest11181-21mailstats08:20:212
151399160,15cyclictest1097-21http_loadtime10:55:162
151399160,15cyclictest0-21swapper/212:05:152
151399160,15cyclictest0-21swapper/211:00:222
151399160,15cyclictest0-21swapper/208:45:492
151399160,15cyclictest0-21swapper/207:35:122
151399160,0cyclictest0-21swapper/210:10:042
1512991614,1cyclictest18245-21sensors12:20:181
1512991614,1cyclictest15840-21idleruntime09:25:161
1512991614,1cyclictest0-21swapper/112:35:181
1512991614,1cyclictest0-21swapper/111:15:101
1512991614,1cyclictest0-21swapper/110:55:161
1512991614,1cyclictest0-21swapper/110:45:181
1512991614,1cyclictest0-21swapper/109:50:181
1512991614,1cyclictest0-21swapper/109:41:131
1512991614,1cyclictest0-21swapper/107:55:171
1512991614,1cyclictest0-21swapper/107:25:221
1512991613,2cyclictest28412-21sed08:50:231
151299160,1cyclictest3333-21apt11:00:121
151299160,1cyclictest0-21swapper/110:10:201
151299160,1cyclictest0-21swapper/109:30:081
151299160,1cyclictest0-21swapper/109:20:171
151299160,15cyclictest3878-21expr09:05:111
151299160,15cyclictest2973-21missed_timers07:10:171
151299160,15cyclictest20996-21cat09:35:151
151299160,15cyclictest19473-21cpuspeed_turbos12:25:151
151299160,15cyclictest17349-21grep11:25:121
151299160,15cyclictest11203-21expr10:15:131
151299160,15cyclictest0-21swapper/112:10:141
151299160,15cyclictest0-21swapper/111:50:141
151299160,15cyclictest0-21swapper/110:45:001
151299160,15cyclictest0-21swapper/110:25:121
151299160,15cyclictest0-21swapper/108:15:181
151299160,0cyclictest0-21swapper/107:15:191
1511991614,1cyclictest4035-21H222:10:210
1511991614,1cyclictest0-21swapper/011:45:140
1511991614,1cyclictest0-21swapper/011:45:130
1511991614,1cyclictest0-21swapper/011:35:140
1511991614,1cyclictest0-21swapper/010:20:140
1511991614,1cyclictest0-21swapper/010:10:140
1511991614,1cyclictest0-21swapper/009:05:000
1511991614,1cyclictest0-21swapper/007:46:490
1511991614,1cyclictest0-21swapper/007:40:150
1511991613,2cyclictest338-21cpuspeed_turbos10:55:150
1511991613,2cyclictest20144-21nfsd410:30:180
151199160,1cyclictest7344-21grep08:15:170
151199160,15cyclictest7291-21cat07:20:000
151199160,15cyclictest14067-21/usr/sbin/munin07:30:140
151199160,15cyclictest0-21swapper/012:25:140
151199160,15cyclictest0-21swapper/012:10:130
151199160,15cyclictest0-21swapper/009:35:170
151199160,15cyclictest0-21swapper/008:50:150
151199160,15cyclictest0-21swapper/008:30:150
151199160,15cyclictest0-21swapper/007:10:220
1513991513,1cyclictest27124-21latency11:40:162
151299150,1cyclictest0-21swapper/111:20:171
151299150,1cyclictest0-21swapper/111:20:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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