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2026-01-02 - 18:38
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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 highest latencies:
System rackdslot0.osadl.org (updated Fri Jan 02, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21676992414,10cyclictest0-21swapper/111:45:131
2167599242,21cyclictest0-21swapper/007:20:010
2167599240,18cyclictest23030-21nfsd411:55:190
2167599230,0cyclictest0-21swapper/011:20:130
21677992222,0cyclictest0-21swapper/209:44:522
2167699220,4cyclictest0-21swapper/108:18:081
2167799214,10cyclictest0-21swapper/207:28:202
21676992112,5cyclictest0-21swapper/111:38:391
2167799206,8cyclictest0-21swapper/207:55:012
21677992018,1cyclictest0-21swapper/210:16:452
2167699204,15cyclictest0-21swapper/108:47:231
2167699200,19cyclictest843-21systemd-network07:30:281
21677991913,5cyclictest0-21swapper/209:24:412
2167699194,1cyclictest0-21swapper/110:09:571
21676991917,1cyclictest0-21swapper/109:31:201
21676991917,1cyclictest0-21swapper/109:31:201
21675991917,1cyclictest0-21swapper/011:38:290
21675991916,2cyclictest9224-21readlink09:35:210
21675991916,2cyclictest29993-21cpuspeed_turbos10:15:150
21675991915,3cyclictest0-21swapper/008:45:460
21677991816,1cyclictest0-21swapper/211:15:232
21677991816,1cyclictest0-21swapper/211:15:232
2167799180,2cyclictest3441-21packagekitd07:13:542
2167799180,17cyclictest22596-21basename11:00:012
2167799180,17cyclictest0-21swapper/211:25:132
2167799180,16cyclictest0-21swapper/207:15:142
2167699182,2cyclictest26561-21wc12:00:221
2167699182,1cyclictest0-21swapper/112:15:151
21676991815,2cyclictest31250-21proc_pri10:15:221
21676991815,2cyclictest1316-21munin-run09:25:011
21676991815,2cyclictest0-21swapper/110:38:151
21676991814,3cyclictest29098-21ls07:20:221
2167699181,1cyclictest0-21swapper/109:27:551
2167699180,3cyclictest1300-21lxd11:40:421
2167699180,3cyclictest1300-21lxd11:40:421
2167699180,17cyclictest5079-21grep12:20:141
2167699180,17cyclictest0-21swapper/107:10:251
2167599182,15cyclictest4531-21grep12:20:130
2167599181,3cyclictest20855-21latency09:00:170
2167599181,1cyclictest0-21swapper/008:15:220
2167599180,17cyclictest4323-21awk08:30:180
2167599180,17cyclictest1829-21systemd-journal09:15:000
2167599180,16cyclictest0-21swapper/008:10:120
2167799175,11cyclictest0-21swapper/212:28:532
21677991715,1cyclictest4964-21cpuspeed_turbos09:30:142
21677991715,1cyclictest4964-21cpuspeed_turbos09:30:132
21677991715,1cyclictest0-21swapper/211:45:162
21677991715,1cyclictest0-21swapper/207:35:242
21677991714,2cyclictest8191-21pickup12:03:142
21677991714,2cyclictest31266-21cut11:15:012
21677991714,2cyclictest25161-21latency10:05:172
21677991714,2cyclictest25113-21needreboot08:10:172
21677991714,2cyclictest18418-21awk10:50:172
21677991714,2cyclictest12234-21awk12:35:002
21677991713,3cyclictest0-21swapper/208:04:402
2167799171,1cyclictest0-21swapper/209:35:172
2167799171,16cyclictest0-21swapper/212:09:002
2167799170,2cyclictest26970-21expr08:15:182
2167799170,2cyclictest20453-21smartctl11:50:192
2167799170,2cyclictest1803-21sendmail_mailqu10:20:212
2167799170,2cyclictest16959-21nfsd407:55:202
2167799170,1cyclictest4272-21grep08:30:182
2167799170,1cyclictest0-21swapper/210:01:482
2167799170,16cyclictest8034-21expr11:30:142
2167799170,16cyclictest7288-21netstat08:35:162
2167799170,16cyclictest4477-21apt12:20:122
2167799170,16cyclictest416-21fschecks_time08:25:142
2167799170,16cyclictest3987-21H222:10:212
2167799170,16cyclictest3918-21fschecks_time10:25:132
2167799170,16cyclictest25764-21egrep11:05:122
2167799170,16cyclictest21849-21grep11:55:142
2167799170,16cyclictest2135-21fschecks_time09:25:162
2167799170,16cyclictest16034-21awk10:45:182
2167799170,16cyclictest1320-21nsca08:43:102
2167799170,16cyclictest11145-21pzem_current07:45:222
2167799170,16cyclictest1035-21thermald11:40:202
2167799170,16cyclictest1035-21thermald11:40:202
21676991714,2cyclictest785-21latency_hist12:15:011
21676991714,2cyclictest5203-21nfsd407:35:181
21676991714,2cyclictest3351-21lxd09:46:421
21676991714,2cyclictest30560-21cron09:20:011
21676991714,2cyclictest28093-21chrt10:10:171
21676991714,2cyclictest27461-21timerandwakeup11:05:211
21676991714,2cyclictest21650-21timerandwakeup09:00:221
21676991714,2cyclictest2069-21systemd-udevd08:54:521
21676991714,2cyclictest18776-21expr08:00:131
21676991714,2cyclictest18633-21latency_hist09:55:001
21676991714,2cyclictest15313-21rm07:55:021
21676991714,2cyclictest1348-21lxd11:18:421
21676991714,2cyclictest1348-21lxd11:18:411
21676991714,2cyclictest11623-21latency_hist08:45:011
21676991714,2cyclictest0-21swapper/112:00:001
2167699171,2cyclictest2957-21rtkit-daemon11:34:071
2167699170,2cyclictest9834-21chrt09:38:531
2167699170,2cyclictest671-21expr10:20:131
2167699170,2cyclictest24685-21/usr/sbin/munin07:15:161
2167699170,2cyclictest21279-21memory10:55:161
2167699170,2cyclictest16739-21cron08:55:021
2167699170,2cyclictest10787-21grep07:45:211
2167699170,16cyclictest32062-21latency_hist08:25:011
2167699170,16cyclictest25364-21ntp_states08:10:171
2167699170,16cyclictest24324-21nfsd411:00:181
2167699170,16cyclictest14306-21proxymap07:50:351
2167699170,16cyclictest11133-21grep12:30:181
21675991715,1cyclictest0-21swapper/007:13:360
21675991714,2cyclictest9977-21munin-run11:35:000
21675991714,2cyclictest6743-21timerwakeupswit09:30:230
21675991714,2cyclictest6743-21timerwakeupswit09:30:230
21675991714,2cyclictest5964-21sshd07:35:410
21675991714,2cyclictest3605-21munin-plugin-st07:35:010
21675991714,2cyclictest32536-21apache_accesses10:20:110
21675991714,2cyclictest31911-21grep12:10:180
21675991714,2cyclictest29835-21expr08:20:140
21675991714,2cyclictest23427-21if_eno109:05:140
21675991714,2cyclictest23427-21if_eno109:05:130
21675991714,2cyclictest20712-21expr10:55:130
21675991714,2cyclictest19212-21grep11:50:120
21675991714,2cyclictest19159-21if_enp1s008:00:150
21675991714,2cyclictest16874-21cat11:45:160
21675991714,2cyclictest15653-21nfsd408:50:190
21675991714,2cyclictest14733-21perf07:55:010
21675991713,3cyclictest888-21egrep12:15:140
2167599171,15cyclictest0-21swapper/011:25:140
2167599170,2cyclictest31775-21expr11:15:150
2167599170,2cyclictest31775-21expr11:15:140
2167599170,2cyclictest23608-21fschecks_count11:00:140
2167599170,2cyclictest19230-21switchtime10:50:220
2167599170,2cyclictest17305-21tr08:55:150
2167599170,2cyclictest10259-21missed_timers10:35:180
2167599170,17cyclictest0-21swapper/010:09:070
2167599170,16cyclictest9532-21cat08:40:130
2167599170,16cyclictest863-21avahi-daemon11:05:200
2167599170,16cyclictest8090-21if_lxdbr012:25:160
2167599170,16cyclictest7202-21head10:30:180
2167599170,16cyclictest708-21latency_hist07:30:010
2167599170,16cyclictest32558-21expr08:25:130
2167599170,16cyclictest31417-21expr09:20:130
2167599170,16cyclictest30746-21perf09:20:010
2167599170,16cyclictest27220-21grep10:10:130
2167599170,16cyclictest17951-21tr08:00:000
2167599170,16cyclictest1655-21expr09:25:150
2167599170,16cyclictest13321-21ls09:45:140
2167599170,16cyclictest13245-21head10:40:170
2167599170,16cyclictest12708-21cpuspeed_turbos12:35:120
2167599170,16cyclictest10515-21cat12:30:140
21677991614,1cyclictest22987-21apache_volume11:00:112
21677991614,1cyclictest17433-21cstates08:55:162
21677991614,1cyclictest0-21swapper/212:15:132
21677991614,1cyclictest0-21swapper/211:20:182
21677991614,1cyclictest0-21swapper/210:30:172
21677991614,1cyclictest0-21swapper/209:50:012
21677991614,1cyclictest0-21swapper/209:45:162
21677991614,1cyclictest0-21swapper/209:00:152
21677991614,1cyclictest0-21swapper/208:45:132
21677991614,1cyclictest0-21swapper/207:40:192
21677991613,2cyclictest25502-21/usr/sbin/munin09:10:152
21677991613,2cyclictest1054-21cpuspeed_turbos07:30:162
21677991613,2cyclictest10511-21cpuspeed_turbos11:35:142
2167799160,1cyclictest28174-21/usr/sbin/munin07:20:162
2167799160,1cyclictest0-21swapper/210:10:142
2167799160,15cyclictest23108-21expr09:05:122
2167799160,15cyclictest23108-21expr09:05:122
2167799160,15cyclictest21202-21cpuspeed_turbos08:05:132
2167799160,15cyclictest0-21swapper/212:35:142
2167799160,15cyclictest0-21swapper/212:10:172
2167799160,15cyclictest0-21swapper/210:40:132
2167799160,15cyclictest0-21swapper/209:15:162
2167799160,15cyclictest0-21swapper/208:50:122
2167799160,15cyclictest0-21swapper/208:25:012
21676991614,1cyclictest0-21swapper/112:35:151
21676991614,1cyclictest0-21swapper/112:25:171
21676991614,1cyclictest0-21swapper/112:05:191
21676991614,1cyclictest0-21swapper/110:50:151
21676991614,1cyclictest0-21swapper/110:30:181
21676991614,1cyclictest0-21swapper/110:25:181
21676991614,1cyclictest0-21swapper/109:05:101
21676991614,1cyclictest0-21swapper/109:05:091
21676991614,1cyclictest0-21swapper/108:09:321
21676991614,1cyclictest0-21swapper/107:40:221
2167699160,2cyclictest32239-21awk08:25:131
2167699160,1cyclictest6173-21cpuspeed_turbos08:35:111
2167699160,1cyclictest21422-21/usr/sbin/munin10:00:191
2167699160,1cyclictest0-21swapper/111:50:111
2167699160,1cyclictest0-21swapper/111:25:221
2167699160,15cyclictest26155-21fschecks_count09:10:131
2167699160,15cyclictest1799-21apache_volume11:20:121
2167699160,15cyclictest10659-21grep09:40:141
2167699160,15cyclictest0-21swapper/111:10:181
2167699160,15cyclictest0-21swapper/110:45:151
2167699160,15cyclictest0-21swapper/110:40:421
2167699160,15cyclictest0-21swapper/109:55:131
2167699160,15cyclictest0-21swapper/109:55:131
2167699160,15cyclictest0-21swapper/108:30:121
21675991614,1cyclictest0-21swapper/012:00:000
21675991614,1cyclictest0-21swapper/011:40:100
21675991614,1cyclictest0-21swapper/011:40:100
21675991614,1cyclictest0-21swapper/011:10:140
21675991614,1cyclictest0-21swapper/010:45:130
21675991614,1cyclictest0-21swapper/009:40:120
21675991613,2cyclictest1290-21kerneloops12:05:030
2167599160,15cyclictest7205-21expr07:40:140
2167599160,15cyclictest5957-21test08:35:000
2167599160,15cyclictest0-21swapper/010:25:100
2167599160,15cyclictest0-21swapper/010:00:110
2167599160,15cyclictest0-21swapper/009:55:130
2167599160,15cyclictest0-21swapper/009:55:130
2167599160,15cyclictest0-21swapper/009:50:120
2167599160,15cyclictest0-21swapper/007:45:160
2167599160,15cyclictest0-21swapper/007:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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