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2026-05-05 - 16:45
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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 May 05, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2502992217,4cyclictest0-21swapper/107:30:171
250299220,1cyclictest0-21swapper/108:00:151
250199220,4cyclictest0-21swapper/009:55:500
2503992113,4cyclictest0-21swapper/210:03:462
250299212,16cyclictest0-21swapper/108:22:141
250199210,3cyclictest0-21swapper/008:23:400
2503992018,1cyclictest271rcuc/210:12:262
250199203,9cyclictest30707-21/usr/sbin/munin11:05:000
250399191,17cyclictest28-21ksoftirqd/210:48:222
250399190,4cyclictest399-20systemd-journal07:28:012
250399190,18cyclictest271rcuc/212:28:112
250399190,17cyclictest5541-21munin-plugin-st07:15:012
250399190,15cyclictest0-21swapper/212:03:192
250299197,1cyclictest0-21swapper/110:35:121
250299192,2cyclictest19547-21timerwakeupswit12:35:211
250199193,15cyclictest0-21swapper/010:40:180
2501991917,1cyclictest0-21swapper/008:55:190
2501991916,2cyclictest1645-21cut11:10:010
250199190,18cyclictest0-21swapper/009:20:590
250399182,15cyclictest4035-21H222:10:212
2503991818,0cyclictest28-21ksoftirqd/211:18:472
2503991816,1cyclictest0-21swapper/211:35:162
250399180,17cyclictest399-20systemd-journal10:23:592
250399180,17cyclictest0-21swapper/211:32:362
250399180,17cyclictest0-21swapper/209:20:182
250399180,15cyclictest271rcuc/209:51:282
250299180,3cyclictest5342-21grep12:10:171
250299180,3cyclictest2203-21latency_hist10:15:001
250299180,16cyclictest0-21swapper/109:48:081
2501991815,2cyclictest4781-21cat12:10:140
2501991814,1cyclictest0-21swapper/007:55:140
250199180,2cyclictest3976-21H222:10:210
250199180,17cyclictest843-21systemd-network09:40:140
250199180,17cyclictest0-21swapper/012:38:420
250399172,1cyclictest28-21ksoftirqd/210:30:172
2503991715,2cyclictest28-21ksoftirqd/209:25:232
2503991715,2cyclictest28-21ksoftirqd/209:25:232
2503991715,1cyclictest3989-21H222:10:212
2503991715,1cyclictest28-21ksoftirqd/209:45:012
2503991715,1cyclictest28-21ksoftirqd/208:35:202
2503991715,1cyclictest28-21ksoftirqd/207:30:152
2503991715,1cyclictest271rcuc/207:45:152
2503991715,1cyclictest0-21swapper/210:25:182
2503991714,2cyclictest31392-21/usr/sbin/munin11:05:162
2503991714,2cyclictest26317-21/usr/sbin/munin10:55:162
2503991714,2cyclictest21084-21sort07:40:162
2503991712,1cyclictest0-21swapper/209:55:212
250399171,15cyclictest3985-21H222:10:212
250399171,15cyclictest3210-21JS22:10:212
250399171,15cyclictest28-21ksoftirqd/207:55:232
250399171,15cyclictest26278-21smartctl11:50:192
250399170,2cyclictest18865-21nfsd412:35:162
250399170,2cyclictest15624-21tune2fs12:30:152
250399170,2cyclictest14550-21snapd08:01:582
250399170,1cyclictest0-21swapper/209:10:142
250399170,1cyclictest0-21swapper/208:45:122
250399170,16cyclictest8457-21fschecks_time11:20:132
250399170,16cyclictest8430-21threads12:15:192
250399170,16cyclictest5130-21python310:20:012
250399170,16cyclictest32610-21grep09:00:002
250399170,16cyclictest21062-21wget09:35:162
250299172,1cyclictest0-21swapper/109:04:431
2502991715,1cyclictest0-21swapper/112:20:171
2502991714,2cyclictest6561-21munin-plugin-st09:10:011
2502991714,2cyclictest32634-21mailstats10:05:221
2502991714,2cyclictest25413-21expr11:50:131
2502991714,2cyclictest24518-21sed08:45:021
2502991714,2cyclictest2351-21/usr/sbin/munin10:15:091
2502991714,2cyclictest23385-21chrt09:42:341
2502991714,2cyclictest21403-21smtpd11:40:521
2502991714,2cyclictest1829-21systemd-journal07:35:511
2502991714,2cyclictest16894-21expr08:30:131
2502991714,2cyclictest16097-21nfsd409:25:201
2502991714,2cyclictest16097-21nfsd409:25:191
2502991714,2cyclictest13723-21munin-run10:35:001
2502991712,4cyclictest3643-21cat12:10:001
250299170,2cyclictest6357-21grep11:15:171
250299170,2cyclictest455-21plymouthd07:20:141
250299170,2cyclictest399-20systemd-journal11:29:551
250299170,2cyclictest3709-21qmgr11:55:211
250299170,2cyclictest29634-21chrt08:52:121
250299170,2cyclictest25417-21date10:55:011
250299170,2cyclictest19625-21sshd10:44:361
250299170,2cyclictest18141-21cat09:30:141
250299170,2cyclictest1523-21lxd11:24:431
250299170,1cyclictest0-21swapper/108:15:191
250299170,16cyclictest6801-21latency07:15:181
250299170,16cyclictest26140-21fschecks_count10:55:141
250299170,16cyclictest22683-21latency_hist10:50:011
250299170,16cyclictest20215-21grep07:40:121
250299170,16cyclictest16268-21latency_hist08:30:001
250299170,16cyclictest1523-21lxd12:16:431
250299170,16cyclictest10626-21taskset10:26:391
250299170,16cyclictest0-21swapper/111:50:001
2501991714,2cyclictest856-21grep12:05:130
2501991714,2cyclictest3991-21H222:10:210
2501991714,2cyclictest26528-21ls07:50:170
2501991714,2cyclictest22230-21grep11:45:140
2501991714,2cyclictest19501-21grep11:40:130
2501991714,2cyclictest12328-21nfsd411:25:190
2501991714,2cyclictest1079-21cups-browsed08:35:180
250199170,2cyclictest27525-21wc08:50:130
250199170,2cyclictest16619-21grep08:30:130
250199170,2cyclictest14485-21expr10:35:120
250199170,2cyclictest0-21swapper/007:30:010
250199170,2cyclictest0-21swapper/007:10:190
250199170,16cyclictest8631-21awk12:15:200
250199170,16cyclictest3780-21pzem_energy11:10:190
250199170,16cyclictest32376-21awk10:05:190
250199170,16cyclictest28301-21smartctl11:55:160
250199170,16cyclictest25341-21expr11:50:130
250199170,16cyclictest23378-21nfsd408:40:210
250199170,16cyclictest23189-21expr10:50:140
250199170,16cyclictest20264-21grep10:45:120
250199170,16cyclictest18083-21cat09:30:140
250199170,16cyclictest16285-21ntp_states09:25:200
250199170,16cyclictest16285-21ntp_states09:25:200
250199170,16cyclictest10349-21munin-run11:25:010
250199170,16cyclictest10291-21sed10:25:220
2503991615,1cyclictest271rcuc/212:10:132
2503991615,1cyclictest0-21swapper/208:23:252
2503991614,1cyclictest28-21ksoftirqd/210:50:132
2503991614,1cyclictest271rcuc/211:10:162
2503991614,1cyclictest0-21swapper/210:40:012
2503991614,1cyclictest0-21swapper/210:35:212
2503991614,1cyclictest0-21swapper/208:15:142
2503991614,1cyclictest0-21swapper/207:50:142
2503991614,1cyclictest0-21swapper/207:15:152
2503991613,2cyclictest25913-21timerwakeupswit09:45:212
2503991613,2cyclictest17641-21nfsd408:30:182
250399160,1cyclictest9436-21/usr/sbin/munin12:20:132
250399160,1cyclictest51382chrt09:05:192
250399160,1cyclictest0-21swapper/211:55:142
250399160,1cyclictest0-21swapper/211:45:132
250399160,1cyclictest0-21swapper/210:05:152
250399160,15cyclictest3990-21H222:10:212
250399160,15cyclictest28-21ksoftirqd/211:40:172
250399160,15cyclictest18405-21nfsd407:35:172
250399160,15cyclictest12195-21needreboot11:25:172
250399160,15cyclictest0-21swapper/209:15:102
250399160,15cyclictest0-21swapper/208:50:172
250399160,15cyclictest0-21swapper/208:40:162
250399160,15cyclictest0-21swapper/208:05:182
2502991614,1cyclictest32199-21sed08:55:231
2502991614,1cyclictest17190-21grep11:35:141
2502991614,1cyclictest13026-21cat09:20:171
2502991614,1cyclictest0-21swapper/107:10:131
2502991613,2cyclictest26786-21/usr/sbin/munin07:50:181
250299160,2cyclictest4848-21cpuspeed_turbos08:10:141
250299160,2cyclictest3058-21rs:main1
250299160,2cyclictest25060-21expr08:45:121
250299160,2cyclictest19619-21expr08:35:121
250299160,1cyclictest0-21swapper/107:45:221
250299160,15cyclictest5134-21python310:20:011
250299160,15cyclictest43642chrt11:11:331
250299160,15cyclictest31416-21apache_processe11:05:131
250299160,15cyclictest1682-21cut08:05:151
250299160,15cyclictest15077-21cpuspeed_turbos12:30:141
250299160,15cyclictest12328-21grep12:25:131
250299160,15cyclictest0-21swapper/112:00:151
250299160,15cyclictest0-21swapper/111:30:141
250299160,15cyclictest0-21swapper/109:55:131
250299160,15cyclictest0-21swapper/109:53:281
250299160,15cyclictest0-21swapper/109:35:211
250299160,15cyclictest0-21swapper/109:10:131
250299160,15cyclictest0-21swapper/107:55:191
250299160,15cyclictest0-21swapper/107:25:151
2501991614,1cyclictest30626-21perf10:05:000
2501991614,1cyclictest20113-21/usr/sbin/munin07:40:140
2501991614,1cyclictest0-21swapper/012:20:140
2501991614,1cyclictest0-21swapper/010:13:530
2501991614,1cyclictest0-21swapper/009:15:150
2501991614,1cyclictest0-21swapper/009:10:170
2501991614,1cyclictest0-21swapper/009:00:150
2501991614,1cyclictest0-21swapper/008:45:150
2501991614,1cyclictest0-21swapper/008:25:190
2501991614,1cyclictest0-21swapper/007:45:210
2501991614,1cyclictest0-21swapper/007:35:130
2501991614,1cyclictest0-21swapper/007:20:140
2501991613,2cyclictest399-20systemd-journal10:55:010
250199160,1cyclictest0-21swapper/012:25:130
250199160,1cyclictest0-21swapper/012:00:150
250199160,1cyclictest0-21swapper/011:30:130
250199160,1cyclictest0-21swapper/009:45:190
250199160,15cyclictest5611-21expr11:15:120
250199160,15cyclictest5081-21nfsd409:05:200
250199160,15cyclictest3543-21grep10:15:120
250199160,15cyclictest31992-21grep08:00:170
250199160,15cyclictest17052-21cat11:35:120
250199160,15cyclictest0-21swapper/010:30:160
250199160,15cyclictest0-21swapper/010:20:110
250199160,15cyclictest0-21swapper/008:15:130
250199160,15cyclictest0-21swapper/008:10:190
250399150,14cyclictest0-21swapper/207:23:452
250299150,14cyclictest0-21swapper/111:04:221
2501991513,1cyclictest0-21swapper/012:30:160
2501991513,1cyclictest0-21swapper/008:05:160
250199150,14cyclictest0-21swapper/009:55:000
250199150,14cyclictest0-21swapper/007:15:170
250299140,14cyclictest0-21swapper/110:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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