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2026-05-15 - 01:13
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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 Thu May 14, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3360993517,17cyclictest0-21swapper/007:30:120
336099240,0cyclictest0-21swapper/012:30:120
336799230,18cyclictest0-21swapper/111:43:391
336099220,18cyclictest0-21swapper/012:19:500
336799210,3cyclictest0-21swapper/107:25:181
336099210,3cyclictest11707-21nvmesmart_nvme012:05:170
336099210,20cyclictest0-21swapper/011:18:470
336099210,18cyclictest0-21swapper/008:55:190
336099204,15cyclictest0-21swapper/011:45:150
336099203,11cyclictest9359-21munin-run10:10:010
336099202,17cyclictest0-21swapper/011:20:160
3360992018,1cyclictest0-21swapper/010:00:120
337299193,15cyclictest16070-21grep12:15:122
337299192,2cyclictest24227-21fschecks_time07:45:132
337299190,17cyclictest5307-21python311:00:012
3367991914,4cyclictest4649-21iwlist07:10:161
336799190,16cyclictest3976-21H222:10:211
336099192,9cyclictest14022-21python311:15:000
337299182,15cyclictest4608-21idleruntime07:10:172
337299182,15cyclictest28-21ksoftirqd/207:19:442
337299182,15cyclictest0-21swapper/209:20:172
3372991815,1cyclictest0-21swapper/212:22:332
337299181,2cyclictest32199-21cat11:45:152
337299181,2cyclictest20941-21fschecks_time08:35:162
337299181,16cyclictest3976-21H222:10:212
337299181,16cyclictest25584-21munin-plugin-st08:45:012
337299181,16cyclictest25584-21munin-plugin-st08:45:012
337299180,16cyclictest14495-21snapd11:25:172
3367991815,1cyclictest0-21swapper/110:24:341
3367991814,3cyclictest5408-21munin-run11:00:011
336799181,16cyclictest0-21swapper/108:35:001
336799180,17cyclictest0-21swapper/109:39:091
336099182,2cyclictest28728-21date08:50:010
336099182,15cyclictest0-21swapper/008:10:010
3360991814,3cyclictest0-21swapper/008:15:190
3360991814,3cyclictest0-21swapper/008:15:190
336099180,15cyclictest4035-21H222:10:210
3372991715,1cyclictest321042chrt10:50:022
3372991715,1cyclictest0-21swapper/208:15:182
3372991715,1cyclictest0-21swapper/208:15:182
3372991714,2cyclictest7962-21latency_hist09:10:012
3372991714,2cyclictest32586-21taskset09:51:312
3372991714,2cyclictest22021-21cpuspeed_turbos09:35:122
3372991714,2cyclictest17148-21munin-plugin-st08:30:012
3372991714,2cyclictest17096-21pzem_power10:20:212
3372991714,2cyclictest12987-21cpuspeed_turbos10:15:132
3372991714,2cyclictest11367-21missed_timers12:05:162
3372991714,2cyclictest11331-21grep10:10:172
337299170,2cyclictest3590-21needreboot09:00:182
337299170,2cyclictest28303-21anvil08:49:342
337299170,2cyclictest27034-21cpuspeed_turbos12:35:142
337299170,2cyclictest23082-21/usr/sbin/munin12:25:192
337299170,2cyclictest21236-21expr10:30:142
337299170,2cyclictest19539-21chrt11:20:532
337299170,2cyclictest15804-21fschecks_count07:30:152
337299170,2cyclictest14843-21sed07:30:012
337299170,2cyclictest12514-21if_err_lxdbr011:10:142
337299170,2cyclictest1127-21sshd11:02:232
337299170,1cyclictest13777-21package-data-do08:25:012
337299170,16cyclictest870-21systemd-logind09:26:522
337299170,16cyclictest5669-21sensors10:00:192
337299170,16cyclictest3987-21H222:10:212
337299170,16cyclictest3981-21H222:10:212
337299170,16cyclictest3414-21master08:54:522
337299170,16cyclictest3053-21systemd-logind11:42:512
337299170,16cyclictest29357-21latency_hist10:45:002
337299170,16cyclictest18861-21cat10:25:142
337299170,16cyclictest17909-21smtpd07:35:152
337299170,16cyclictest17459-21apache_processe08:30:102
337299170,15cyclictest3976-21H222:10:212
336799172,15cyclictest21-21ksoftirqd/111:21:201
3367991715,1cyclictest21-21ksoftirqd/112:37:111
3367991715,1cyclictest0-21swapper/109:05:181
3367991714,2cyclictest7603-21cat08:10:201
3367991714,2cyclictest5601-21lxd09:14:421
3367991714,2cyclictest31727-21/usr/sbin/munin08:00:151
3367991714,2cyclictest26317-21sed10:40:011
3367991714,2cyclictest1079-21cups-browsed11:00:201
3367991713,3cyclictest20289-21nfsd409:30:171
336799171,15cyclictest0-21swapper/108:15:201
336799171,15cyclictest0-21swapper/108:15:201
336799170,2cyclictest9531-21chrt12:00:331
336799170,2cyclictest8998-21python307:20:011
336799170,2cyclictest4569-21expr10:00:131
336799170,2cyclictest3351-21lxd07:36:431
336799170,2cyclictest30833-21timerwakeupswit07:55:211
336799170,2cyclictest27032-21grep11:35:161
336799170,2cyclictest25336-21nfsd412:30:151
336799170,2cyclictest23125-21sshd10:32:421
336799170,2cyclictest19011-21expr12:20:131
336799170,2cyclictest1526-21lxd12:26:441
336799170,2cyclictest13345-21expr10:15:131
336799170,2cyclictest10822-21/usr/sbin/munin09:15:151
336799170,1cyclictest3991-21H222:10:211
336799170,1cyclictest0-21swapper/112:06:341
336799170,16cyclictest9268-21expr11:05:131
336799170,16cyclictest9086-21sessionclean10:09:001
336799170,16cyclictest3979-21H222:10:211
336799170,16cyclictest3764-21kernelversion08:05:171
336799170,16cyclictest32049-21ls08:55:141
336799170,16cyclictest31214-21sshd08:53:431
336799170,16cyclictest26977-21fschecks_time08:45:141
336799170,16cyclictest17330-21ntp_states12:15:181
336799170,16cyclictest16642-21ls11:15:201
336799170,16cyclictest13808-21python308:25:011
336799170,16cyclictest11675-21vmstat07:20:201
336799170,16cyclictest0-21swapper/109:20:101
336799170,15cyclictest25560-21python308:45:011
336799170,15cyclictest25560-21python308:45:011
336799170,15cyclictest0-21swapper/111:10:111
336799170,11cyclictest0-21swapper/108:27:501
3360991715,1cyclictest3985-21H222:10:210
3360991715,1cyclictest3985-21H222:10:210
3360991715,1cyclictest0-21swapper/010:25:050
3360991714,2cyclictest7186-21awk12:00:010
3360991714,2cyclictest5926-21cpuspeed_turbos08:10:120
3360991714,2cyclictest3976-21H222:10:210
3360991714,2cyclictest3414-21master08:51:230
3360991714,2cyclictest28980-21/usr/sbin/munin07:55:110
3360991714,2cyclictest19139-21nfsd407:35:170
3360991714,2cyclictest11569-21expr08:20:130
3360991714,2cyclictest0-21swapper/012:20:130
3360991714,1cyclictest0-21swapper/008:00:130
3360991713,3cyclictest16310-21cron09:25:010
336099171,2cyclictest863-21avahi-daemon10:15:200
336099170,2cyclictest6560-21grep09:05:180
336099170,2cyclictest4035-21H222:10:210
336099170,2cyclictest28049-21cron11:39:000
336099170,2cyclictest27574-21awk07:50:180
336099170,2cyclictest12677-21grep07:25:130
336099170,16cyclictest9321-21https07:20:020
336099170,16cyclictest8603-21chrt07:16:240
336099170,16cyclictest3991-21H222:10:210
336099170,16cyclictest31553-21smtpd10:48:030
336099170,16cyclictest2392-21nvmesmart_nvme009:55:190
336099170,16cyclictest22246-21smartctl07:40:190
336099170,16cyclictest14993-21ntpq09:20:170
336099170,16cyclictest10046-21/usr/sbin/munin10:10:140
336099170,16cyclictest0-21swapper/009:30:170
3372991614,1cyclictest0-21swapper/211:55:072
3372991614,1cyclictest0-21swapper/211:30:122
3372991614,1cyclictest0-21swapper/209:45:172
3372991614,1cyclictest0-21swapper/209:30:152
3372991614,1cyclictest0-21swapper/209:15:132
3372991614,1cyclictest0-21swapper/207:55:152
3372991614,1cyclictest0-21swapper/207:50:202
3372991614,1cyclictest0-21swapper/207:40:122
3372991613,2cyclictest31345-21users10:45:212
3372991613,2cyclictest26078-21tr09:40:192
337299160,2cyclictest0-21swapper/212:10:202
337299160,2cyclictest0-21swapper/212:10:202
337299160,1cyclictest0-21swapper/211:35:142
337299160,15cyclictest7579-21apache_volume12:00:112
337299160,15cyclictest2600-21apt-get08:05:122
337299160,15cyclictest25336-21nfsd412:30:152
337299160,15cyclictest23713-21/usr/sbin/munin10:35:112
337299160,15cyclictest1872-21cpuspeed_turbos11:50:122
337299160,15cyclictest0-21swapper/209:10:142
337299160,15cyclictest0-21swapper/209:00:002
337299160,15cyclictest0-21swapper/208:10:122
337299160,15cyclictest0-21swapper/208:00:192
337299160,15cyclictest0-21swapper/207:20:032
3367991614,1cyclictest32452-21expr10:50:121
3367991614,1cyclictest20814-21/usr/sbin/munin07:40:121
3367991614,1cyclictest0-21swapper/111:55:131
3367991614,1cyclictest0-21swapper/111:50:131
3367991614,1cyclictest0-21swapper/109:40:121
3367991614,1cyclictest0-21swapper/108:35:211
3367991614,1cyclictest0-21swapper/107:45:151
3367991613,2cyclictest25058-21seq11:31:571
336799161,1cyclictest0-21swapper/111:45:141
336799160,2cyclictest13250-21wc12:10:131
336799160,2cyclictest13250-21wc12:10:131
336799160,16cyclictest26733-21cpuspeed_turbos10:40:131
336799160,15cyclictest30748-21cpuspeed_turbos09:50:121
336799160,15cyclictest18216-21timerwakeupswit09:25:231
336799160,15cyclictest0-21swapper/111:25:151
336799160,15cyclictest0-21swapper/109:55:141
336799160,15cyclictest0-21swapper/109:00:161
336799160,15cyclictest0-21swapper/107:55:011
3360991614,1cyclictest0-21swapper/011:50:140
3360991614,1cyclictest0-21swapper/011:44:310
3360991614,1cyclictest0-21swapper/011:25:110
3360991614,1cyclictest0-21swapper/009:00:220
3360991614,1cyclictest0-21swapper/008:40:160
3360991614,1cyclictest0-21swapper/008:40:150
3360991614,1cyclictest0-21swapper/008:25:140
3360991614,1cyclictest0-21swapper/007:45:190
3360991613,2cyclictest24792-21cat10:35:170
3360991613,2cyclictest22506-21smartctl09:35:140
336099160,1cyclictest0-21swapper/010:20:130
336099160,1cyclictest0-21swapper/009:15:140
336099160,1cyclictest0-21swapper/009:10:190
336099160,1cyclictest0-21swapper/007:10:200
336099160,15cyclictest8974-21ntpq12:00:180
336099160,15cyclictest28107-21expr09:45:130
336099160,15cyclictest28067-21nfsd412:35:180
336099160,15cyclictest14550-21snapd12:25:570
336099160,15cyclictest0-21swapper/012:10:180
336099160,15cyclictest0-21swapper/012:10:180
336099160,15cyclictest0-21swapper/011:00:020
336099160,15cyclictest0-21swapper/010:50:120
336099160,15cyclictest0-21swapper/010:40:130
336099160,15cyclictest0-21swapper/010:30:140
3360991513,1cyclictest0-21swapper/008:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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