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2026-05-12 - 22:16
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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 Tue May 12, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
511799210,20cyclictest843-21systemd-network12:17:522
511399214,8cyclictest0-21swapper/109:43:541
511399210,3cyclictest0-21swapper/109:18:351
511399203,8cyclictest0-21swapper/111:09:021
511399202,3cyclictest0-21swapper/111:00:151
5117991914,3cyclictest0-21swapper/208:32:472
511799191,17cyclictest0-21swapper/209:30:012
511799190,16cyclictest3989-21H222:10:212
511399193,15cyclictest0-21swapper/107:55:011
511299192,1cyclictest0-21swapper/009:18:430
5112991916,2cyclictest681-21cut08:00:000
5112991914,4cyclictest0-21swapper/007:50:160
511299190,3cyclictest0-21swapper/011:11:270
511299190,3cyclictest0-21swapper/011:11:260
511299190,18cyclictest15499-21http_loadtime09:20:150
511799182,15cyclictest27715-21idleruntime08:45:162
511799182,15cyclictest0-21swapper/208:51:122
5117991816,1cyclictest28-21ksoftirqd/207:11:102
5117991816,1cyclictest2289-21switchtime08:55:212
5117991814,3cyclictest18461-21munin-plugin-st08:30:012
5117991814,3cyclictest0-21swapper/208:15:012
5117991813,4cyclictest0-21swapper/208:00:172
511799181,1cyclictest0-21swapper/212:24:332
511799181,16cyclictest27167-21smtpd12:35:182
511799180,17cyclictest2974-21idleruntime-cro10:55:012
511799180,15cyclictest4035-21H222:10:212
511799180,15cyclictest0-21swapper/211:10:202
511799180,15cyclictest0-21swapper/211:10:192
5113991816,1cyclictest0-21swapper/112:08:391
5113991816,1cyclictest0-21swapper/110:55:151
5113991816,1cyclictest0-21swapper/107:30:021
5113991814,3cyclictest3976-21H222:10:211
5113991814,3cyclictest2007-21systemd-journal11:39:441
5113991814,3cyclictest11462-21ntp_kernel_pll_08:15:201
511399181,2cyclictest24535-21chrt07:42:531
511399181,2cyclictest24535-21chrt07:42:521
511399181,16cyclictest20720-21chrt08:32:261
511399181,16cyclictest19010-21latency_hist10:25:011
5112991816,1cyclictest0-21swapper/008:05:140
5112991815,2cyclictest20830-21timerandwakeup10:25:210
5112991814,3cyclictest5662-21uname11:55:190
5112991814,3cyclictest15434-21systemctl08:25:010
5112991814,1cyclictest0-21swapper/008:26:520
5112991814,1cyclictest0-21swapper/007:34:550
511299181,16cyclictest23933-21pzem_power07:40:210
511299181,16cyclictest23933-21pzem_power07:40:210
5117991715,1cyclictest0-21swapper/210:10:152
5117991714,2cyclictest31854-21threads10:45:202
5117991714,2cyclictest28706-21tr09:45:132
5117991714,2cyclictest26427-21if_enp1s011:35:162
5117991714,2cyclictest25875-21ntp_kernel_pll_10:35:202
5117991714,2cyclictest2394-21http_loadtime11:50:142
5117991714,2cyclictest20470-21sed07:35:182
5117991714,2cyclictest18991-21pzem11:20:212
5117991714,2cyclictest1829-21systemd-journal12:33:392
5117991714,2cyclictest15938-21/usr/sbin/munin09:20:182
5117991714,2cyclictest1522-21lxd11:04:442
5117991714,2cyclictest1521-21lxd12:26:432
5117991714,2cyclictest13988-21/usr/sbin/munin10:15:172
5117991713,3cyclictest27505-21ls09:40:212
511799171,1cyclictest23492-21cat10:30:222
511799170,2cyclictest9560-21nvmesmart_nvme007:15:192
511799170,2cyclictest9560-21nvmesmart_nvme007:15:182
511799170,2cyclictest32539-21awk09:50:182
511799170,2cyclictest21553-21grep09:30:182
511799170,2cyclictest17934-21head07:30:192
511799170,2cyclictest12490-21/usr/sbin/munin07:20:232
511799170,2cyclictest12230-21cpuspeed_turbos09:15:142
511799170,2cyclictest10208-21kernelversion09:10:172
511799170,16cyclictest8386-21kernelversion12:00:172
511799170,16cyclictest31782-21nfsd407:55:182
511799170,16cyclictest26045-21kernelversion07:45:182
511799170,16cyclictest24338-21ntpq09:35:192
511799170,16cyclictest22548-21cpuspeed_turbos07:40:152
511799170,16cyclictest22548-21cpuspeed_turbos07:40:152
511799170,16cyclictest17251-21latency_hist11:20:002
511799170,16cyclictest1351-21lxd11:56:442
511799170,16cyclictest12416-21sessionclean12:08:582
511799170,16cyclictest11782-21cat08:15:232
511799170,16cyclictest0-21swapper/210:40:172
511799170,15cyclictest5696-21nfsd408:05:182
511399176,10cyclictest0-21swapper/111:50:171
5113991715,1cyclictest0-21swapper/111:25:421
5113991715,1cyclictest0-21swapper/110:50:151
5113991715,1cyclictest0-21swapper/107:20:231
5113991714,2cyclictest993-21dbus-daemon12:00:221
5113991714,2cyclictest9694-21perf08:15:001
5113991714,2cyclictest9654-21processes07:15:201
5113991714,2cyclictest9654-21processes07:15:201
5113991714,2cyclictest3987-21H222:10:211
5113991714,2cyclictest3361-21runrttasks08:03:541
5113991714,2cyclictest29192-21cat10:40:221
5113991714,2cyclictest28971-21expr11:40:131
5113991714,2cyclictest24605-21grep10:35:151
5113991714,2cyclictest18373-21cat08:30:001
5113991714,2cyclictest1719-21/usr/sbin/munin09:55:131
5113991714,2cyclictest15533-21/usr/sbin/munin08:25:011
5113991714,2cyclictest10674-21ntp_kernel_pll_09:10:201
5113991714,2cyclictest0-21swapper/107:55:211
5113991714,1cyclictest0-21swapper/108:50:181
511399171,15cyclictest9415-21timerwakeupswit10:05:241
511399171,15cyclictest12217-21cat11:10:141
511399171,15cyclictest12217-21cat11:10:141
511399170,2cyclictest6286-21sendmail_mailqu11:55:221
511399170,2cyclictest3987-21H222:10:211
511399170,2cyclictest25120-21chrt09:38:171
511399170,2cyclictest19102-21expr12:20:131
511399170,2cyclictest15911-21apt-config10:20:011
511399170,1cyclictest3985-21H222:10:211
511399170,1cyclictest0-21swapper/107:48:341
511399170,16cyclictest6952-21/usr/sbin/munin07:10:211
511399170,16cyclictest4963-21cut10:00:151
511399170,16cyclictest3987-21H222:10:211
511399170,16cyclictest31959-21fschecks_time09:50:141
511399170,16cyclictest31257-21sed10:45:171
511399170,16cyclictest27210-21tr08:45:141
511399170,16cyclictest23882-21sed11:30:171
511399170,16cyclictest22741-21ntp_states08:35:181
511399170,16cyclictest17594-21grep09:25:141
511399170,16cyclictest16004-21nfsd409:20:181
511399170,16cyclictest11344-21kernelversion10:10:181
511399170,15cyclictest599-21grep08:55:131
5112991716,1cyclictest9-21ksoftirqd/010:12:390
5112991715,1cyclictest0-21swapper/011:45:160
5112991715,1cyclictest0-21swapper/011:27:280
5112991714,2cyclictest3981-21H222:10:210
5112991714,2cyclictest2960-21perf10:55:010
5112991714,2cyclictest2850-21gmain10:57:280
5112991714,2cyclictest26742-21grep07:45:230
5112991714,2cyclictest23177-21ps12:25:190
5112991714,2cyclictest22816-21processes08:35:190
5112991714,2cyclictest19760-21latency_hist11:25:010
5112991714,2cyclictest18974-21expr08:30:110
511299171,15cyclictest4035-21H222:10:210
511299170,2cyclictest7841-21ls08:10:130
511299170,2cyclictest7822-21/usr/sbin/munin09:05:190
511299170,2cyclictest7252-21timerwakeupswit07:10:220
511299170,2cyclictest399-20systemd-journal12:08:590
511299170,2cyclictest27842-21fschecks_time12:35:150
511299170,2cyclictest24417-21cut10:35:010
511299170,2cyclictest11369-21nfsd408:15:180
511299170,1cyclictest3987-21H222:10:210
511299170,1cyclictest3976-21H222:10:210
511299170,1cyclictest0-21swapper/011:32:520
511299170,1cyclictest0-21swapper/011:00:420
511299170,1cyclictest0-21swapper/007:21:260
511299170,1cyclictest0-21swapper/007:17:270
511299170,1cyclictest0-21swapper/007:17:260
511299170,16cyclictest6056-21date09:05:010
511299170,16cyclictest3989-21H222:10:210
511299170,16cyclictest3985-21H222:10:210
511299170,16cyclictest29527-21cat11:40:170
511299170,16cyclictest28614-21awk10:40:170
511299170,16cyclictest27696-21http_loadtime08:45:140
511299170,16cyclictest26988-21grep11:35:200
511299170,16cyclictest25110-21fschecks_count10:35:150
511299170,16cyclictest24913-21fschecks_time08:40:150
511299170,16cyclictest20352-21if_err_enp1s007:35:180
511299170,16cyclictest18837-21/usr/sbin/munin12:20:130
511299170,16cyclictest1829-21systemd-journal09:31:370
511299170,16cyclictest15796-21munin-run10:20:000
511299170,16cyclictest15037-21cat07:25:200
511299170,16cyclictest1145-21df08:55:150
511299170,16cyclictest10180-21missed_timers11:05:170
5117991614,1cyclictest228752chrt11:30:062
5117991614,1cyclictest0-21swapper/212:10:132
5117991614,1cyclictest0-21swapper/210:25:122
5117991614,1cyclictest0-21swapper/209:00:182
5117991614,1cyclictest0-21swapper/208:40:142
5117991614,1cyclictest0-21swapper/208:35:102
5117991614,1cyclictest0-21swapper/207:50:182
5117991613,2cyclictest4251-21fschecks_time10:55:152
511799160,15cyclictest7556-21needreboot09:05:182
511799160,15cyclictest7525-21/usr/sbin/munin10:05:142
511799160,15cyclictest2256-21expr09:55:162
511799160,15cyclictest13145-21expr08:20:112
511799160,15cyclictest10280-21nfsd411:05:182
511799160,15cyclictest0-21swapper/211:45:172
511799160,15cyclictest0-21swapper/211:25:132
511799160,15cyclictest0-21swapper/210:00:162
511799160,15cyclictest0-21swapper/207:25:172
5113991614,1cyclictest19149-21cpuspeed_turbos10:25:121
5113991614,1cyclictest0-21swapper/112:25:161
5113991614,1cyclictest0-21swapper/109:45:141
5113991614,1cyclictest0-21swapper/108:05:161
511399160,1cyclictest18504-21missed_timers11:20:171
511399160,1cyclictest0-21swapper/111:45:131
511399160,1cyclictest0-21swapper/107:35:141
511399160,15cyclictest22035-21cstates10:30:121
511399160,15cyclictest20219-21/usr/sbin/munin09:30:121
511399160,15cyclictest16918-21sed12:15:171
511399160,15cyclictest0-21swapper/111:16:351
511399160,15cyclictest0-21swapper/108:40:151
5112991614,1cyclictest3450-21gsd-color08:50:020
5112991614,1cyclictest0-21swapper/010:45:130
5112991613,2cyclictest15687-21latency11:15:170
5112991613,2cyclictest10342-21/usr/sbin/munin09:10:190
511299160,2cyclictest26394-21expr09:40:130
511299160,1cyclictest2670-21latency11:50:170
511299160,15cyclictest5097-21expr10:00:150
511299160,15cyclictest31326-21wc09:50:140
511299160,15cyclictest24914-21ls12:30:120
511299160,15cyclictest24426-21ps09:35:200
511299160,15cyclictest17984-21expr09:25:140
511299160,15cyclictest0-21swapper/012:04:530
511299160,15cyclictest0-21swapper/009:55:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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