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2026-11-14 - 02:18
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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 Fri Nov 13, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2858599220,21cyclictest843-21systemd-network11:03:101
28585992113,4cyclictest0-21swapper/111:47:581
2858499214,11cyclictest16696-21perf09:40:010
28590992017,2cyclictest0-21swapper/210:35:132
28584992014,5cyclictest8298-21latency_hist07:30:010
28590991916,2cyclictest16419-21cpuspeed_turbos12:30:132
2859099191,3cyclictest6963-21fschecks_count11:15:132
2859099190,1cyclictest0-21swapper/211:31:502
2859099190,18cyclictest843-21systemd-network10:31:472
2858599192,2cyclictest18234-21cmp08:45:001
2858599191,17cyclictest9298-21nfsd412:15:161
2858599190,2cyclictest0-21swapper/111:30:001
2858599190,1cyclictest0-21swapper/110:55:161
2858599190,19cyclictest0-21swapper/110:09:521
2858499193,1cyclictest0-21swapper/009:09:220
2858499193,15cyclictest1147-21timerwakeupswit07:15:200
2858499193,15cyclictest0-21swapper/009:48:080
2858499192,16cyclictest4833-21nfsd411:10:170
2858499190,0cyclictest0-21swapper/012:16:340
28590991815,2cyclictest9549-21plymouth12:15:182
28590991815,2cyclictest32443-21grep10:05:182
28590991815,2cyclictest26804-21cat09:00:012
2859099180,4cyclictest0-21swapper/207:37:312
2859099180,2cyclictest3987-21H222:10:212
2858599182,15cyclictest0-21swapper/110:16:271
28585991816,1cyclictest0-21swapper/110:35:121
28585991815,2cyclictest8445-21cut09:24:591
28585991815,2cyclictest2753-21cpuspeed_turbos07:20:121
2858599181,3cyclictest14663-21grep12:25:171
2858599181,16cyclictest6557-21cpuspeed_turbos11:15:121
2858599180,18cyclictest0-21swapper/112:38:541
2858599180,18cyclictest0-21swapper/112:38:531
2858599180,18cyclictest0-21swapper/111:07:081
2858599180,18cyclictest0-21swapper/109:58:201
2858599180,18cyclictest0-21swapper/109:12:321
2858599180,18cyclictest0-21swapper/108:26:361
2858499181,16cyclictest12662-21nfsd407:35:170
2858499180,3cyclictest7153-21munin-run10:20:000
2858499180,3cyclictest399-20systemd-journal11:40:010
2858499180,16cyclictest3981-21H222:10:210
2858499180,16cyclictest1856-21systemd-udevd07:20:510
28590991714,2cyclictest5593-21date07:25:012
28590991714,2cyclictest30982-21wc08:10:132
28590991714,2cyclictest2359-21taskset09:13:052
28590991714,2cyclictest19903-21latency12:35:172
28590991714,2cyclictest19903-21latency12:35:162
28590991714,2cyclictest1944-21cut12:05:002
28590991714,2cyclictest18326-21cat09:40:152
28590991714,2cyclictest12751-21cpuspeed_turbos08:35:132
2859099171,15cyclictest0-21swapper/207:25:162
2859099170,2cyclictest5947-21hddtemp_smartct12:10:152
2859099170,2cyclictest5836-21sed10:15:162
2859099170,2cyclictest4980-21cat08:20:142
2859099170,2cyclictest3436-21cut10:10:202
2859099170,2cyclictest3313-21cstates09:15:142
2859099170,2cyclictest29825-21cpuspeed_turbos11:00:132
2859099170,2cyclictest26594-21munin-plugin-st10:55:002
2859099170,2cyclictest18606-21apt-config08:45:022
2859099170,1cyclictest0-21swapper/211:10:212
2859099170,16cyclictest9503-21kernelversion07:30:182
2859099170,16cyclictest3989-21H222:10:212
2859099170,16cyclictest394-21netstat07:15:182
2859099170,16cyclictest30068-21nfsd411:55:172
2859099170,16cyclictest21786-21pzem_voltage09:45:202
2859099170,16cyclictest21526-21kernelversion11:40:142
2859099170,16cyclictest20658-21pickup09:30:362
2859099170,16cyclictest20048-21cat07:50:162
2859099170,16cyclictest19119-21nvmesmart_nvme011:35:182
2859099170,16cyclictest18041-21cat08:45:012
2859099170,16cyclictest17260-21ls07:45:132
2859099170,16cyclictest17256-21gpgv09:40:012
2859099170,16cyclictest14545-21snapd08:06:002
2859099170,15cyclictest0-21swapper/210:44:152
2858599172,1cyclictest0-21swapper/110:45:201
28585991714,2cyclictest7631-21wc10:20:121
28585991714,2cyclictest4652-21latency11:10:171
28585991714,2cyclictest4035-21H222:10:211
28585991714,2cyclictest31226-21perf07:14:591
28585991714,2cyclictest21022-21expr11:40:121
28585991714,2cyclictest17607-21fschecks_time07:45:131
28585991714,2cyclictest14504-21snapd09:42:581
28585991714,2cyclictest12582-21cron10:30:011
28585991714,2cyclictest12582-21cron10:30:011
28585991714,2cyclictest11804-21sed12:20:161
2858599171,15cyclictest3989-21H222:10:211
2858599170,2cyclictest4239-21cat12:05:211
2858599170,2cyclictest4035-21H222:10:211
2858599170,2cyclictest399-20systemd-journal09:10:011
2858599170,16cyclictest6597-21ntpq12:10:181
2858599170,16cyclictest4526-21nfsd409:15:171
2858599170,16cyclictest32340-21basename12:00:141
2858599170,16cyclictest30762-21munin-run10:05:011
2858599170,16cyclictest29143-21smtpd09:04:231
2858599170,16cyclictest26544-21cat08:59:591
2858599170,16cyclictest24246-21nfsd409:50:171
2858599170,16cyclictest16785-21grep12:30:141
2858599170,16cyclictest1522-21lxd10:14:441
2858599170,16cyclictest1515-21lxd09:46:441
2858599170,16cyclictest13758-21cron07:40:011
2858599170,16cyclictest1035-21thermald08:45:191
28584991716,1cyclictest26534-21kworker/0:310:21:470
28584991715,1cyclictest21653-21cstates10:45:130
28584991714,2cyclictest9282-21expr09:25:110
28584991714,2cyclictest863-21avahi-daemon11:55:200
28584991714,2cyclictest6579-21cut12:10:170
28584991714,2cyclictest368-21expr09:10:120
28584991714,2cyclictest29542-21missed_timers10:00:170
28584991714,2cyclictest27243-21grep11:50:180
28584991714,2cyclictest20988-21cron08:50:000
28584991714,2cyclictest20195-21nfsd412:35:180
28584991714,2cyclictest20195-21nfsd412:35:180
28584991714,2cyclictest1856-21systemd-udevd11:18:520
28584991714,2cyclictest17851-21cat08:44:560
28584991714,2cyclictest12041-21cpuspeed_turbos11:25:120
28584991712,4cyclictest0-21swapper/007:44:180
2858499170,2cyclictest5256-21if_eno108:20:150
2858499170,2cyclictest3636-21expr09:15:140
2858499170,2cyclictest26853-21grep09:55:150
2858499170,2cyclictest14374-21cut12:25:170
2858499170,1cyclictest0-21swapper/011:38:530
2858499170,16cyclictest3976-21H222:10:210
2858499170,16cyclictest3976-21H222:10:210
2858499170,16cyclictest11480-21sendmail_mailst08:30:190
2858499170,16cyclictest0-21swapper/008:16:130
2858499170,16cyclictest0-21swapper/008:16:130
2858499170,15cyclictest0-21swapper/011:48:120
28590991614,1cyclictest3985-21H222:10:212
28590991614,1cyclictest10385-21cpuspeed_turbos10:25:132
28590991614,1cyclictest10385-21cpuspeed_turbos10:25:122
28590991614,1cyclictest0-21swapper/212:25:122
28590991614,1cyclictest0-21swapper/211:25:152
28590991614,1cyclictest0-21swapper/211:20:122
28590991614,1cyclictest0-21swapper/210:55:142
28590991614,1cyclictest0-21swapper/209:25:122
28590991614,1cyclictest0-21swapper/209:20:182
28590991614,1cyclictest0-21swapper/208:00:172
2859099160,1cyclictest28873-21/usr/sbin/munin07:10:152
2859099160,1cyclictest2177-21cpuspeed_turbos12:05:142
2859099160,1cyclictest0-21swapper/211:45:202
2859099160,1cyclictest0-21swapper/208:15:132
2859099160,1cyclictest0-21swapper/208:15:122
2859099160,15cyclictest22034-21fschecks_count10:45:142
2859099160,15cyclictest0-21swapper/211:50:142
2859099160,15cyclictest0-21swapper/210:20:202
2859099160,15cyclictest0-21swapper/210:00:152
2859099160,15cyclictest0-21swapper/209:05:212
2859099160,15cyclictest0-21swapper/209:00:172
2859099160,15cyclictest0-21swapper/208:50:142
2859099160,15cyclictest0-21swapper/208:30:132
2859099160,15cyclictest0-21swapper/207:40:142
28585991614,1cyclictest26535-21ls11:50:151
28585991614,1cyclictest24841-21http_loadtime10:50:141
28585991614,1cyclictest0-21swapper/111:34:341
28585991614,1cyclictest0-21swapper/109:35:091
28585991614,1cyclictest0-21swapper/108:30:161
28585991614,1cyclictest0-21swapper/107:50:151
28585991614,1cyclictest0-21swapper/107:35:161
28585991614,1cyclictest0-21swapper/107:30:111
28585991614,1cyclictest0-21swapper/107:25:101
28585991613,2cyclictest28309-21expr08:05:131
2858599160,2cyclictest11635-21expr09:30:131
2858599160,1cyclictest4479-21cpu08:20:121
2858599160,15cyclictest30059-21nfsd411:55:171
2858599160,15cyclictest25381-21cpuspeed_turbos08:00:141
2858599160,15cyclictest22589-21grep08:50:181
2858599160,15cyclictest22489-21grep07:55:131
2858599160,15cyclictest18782-21cut10:40:141
2858599160,15cyclictest0-21swapper/111:20:131
2858599160,15cyclictest0-21swapper/110:30:111
2858599160,15cyclictest0-21swapper/108:15:161
2858599160,15cyclictest0-21swapper/108:15:161
2858599160,15cyclictest0-21swapper/108:10:141
2858599160,15cyclictest0-21swapper/107:15:201
28584991614,1cyclictest3450-21gsd-color08:35:180
28584991614,1cyclictest1991-21mailstats11:05:200
28584991614,1cyclictest15143-21expr11:30:090
28584991614,1cyclictest0-21swapper/010:55:160
28584991614,1cyclictest0-21swapper/010:30:120
28584991614,1cyclictest0-21swapper/009:50:120
28584991614,1cyclictest0-21swapper/009:30:130
28584991614,1cyclictest0-21swapper/009:20:140
28584991614,1cyclictest0-21swapper/008:55:060
28584991613,2cyclictest30790-21nfsd411:00:170
28584991613,2cyclictest17612-21sed10:35:210
28584991613,2cyclictest16532-21expr12:30:120
2858499160,2cyclictest28912-21grep07:10:120
2858499160,2cyclictest21584-21tr08:50:140
2858499160,1cyclictest2431-21expr12:05:140
2858499160,15cyclictest8982-21cat08:25:210
2858499160,15cyclictest31650-21expr10:05:130
2858499160,15cyclictest31569-21/usr/sbin/munin12:00:200
2858499160,15cyclictest31494-21cat08:10:130
2858499160,15cyclictest26902-21apt-get09:00:110
2858499160,15cyclictest2069-21systemd-udevd08:00:520
2858499160,15cyclictest18732-21nfsd409:40:160
2858499160,15cyclictest10833-21ls10:25:140
2858499160,15cyclictest10833-21ls10:25:130
2858499160,15cyclictest0-21swapper/010:50:020
2858499160,15cyclictest0-21swapper/010:40:080
2858499160,15cyclictest0-21swapper/010:13:100
2858499160,15cyclictest0-21swapper/008:05:140
2858499160,15cyclictest0-21swapper/007:50:160
2858499160,15cyclictest0-21swapper/007:30:150
28590991513,1cyclictest32481-21apt-config11:05:012
2859099150,1cyclictest0-21swapper/209:50:112
2859099150,0cyclictest0-21swapper/209:59:142
2858499150,1cyclictest28583-21cyclictest07:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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