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2026-06-02 - 09:57
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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 Jun 02, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4462992114,4cyclictest14952-21apt-config00:15:002
446299210,18cyclictest4342-21nfsd420:05:172
4461992116,4cyclictest17053-21wc22:25:141
4461992019,0cyclictest0-21swapper/120:25:481
4461992017,2cyclictest30685-21if_enp1s023:45:181
4461992017,2cyclictest28658-21php7.000:38:591
446199200,16cyclictest0-21swapper/122:06:051
446099202,3cyclictest4236-21if_lxdbr023:55:160
446099202,17cyclictest0-21swapper/022:28:150
4462991916,1cyclictest0-21swapper/222:12:482
446299190,16cyclictest3991-21H222:10:212
4461991915,3cyclictest0-21swapper/122:55:471
4461991915,3cyclictest0-21swapper/100:14:201
446099194,14cyclictest0-21swapper/022:15:170
4460991916,2cyclictest3983-21H222:10:210
446099190,4cyclictest426-21systemd-udevd19:53:530
446299182,2cyclictest15587-21cut21:25:012
446299182,1cyclictest18010-21nfsd422:25:192
4462991816,1cyclictest28-21ksoftirqd/200:27:362
4462991815,2cyclictest3976-21H222:10:212
4462991815,2cyclictest0-21swapper/221:55:182
446299181,2cyclictest27354-21chrt22:43:182
446299181,16cyclictest20638-21smtpd19:39:022
446299180,3cyclictest12539-21cron19:25:012
446299180,2cyclictest4099-21H222:10:212
446299180,1cyclictest0-21swapper/200:38:402
446199182,15cyclictest2435-21seq23:52:531
446199182,15cyclictest21-21ksoftirqd/120:10:001
446199182,15cyclictest0-21swapper/119:43:171
446199182,15cyclictest0-21swapper/119:22:021
4461991816,1cyclictest0-21swapper/123:40:201
4461991816,1cyclictest0-21swapper/100:05:151
4461991815,2cyclictest3991-21H222:10:211
4461991815,2cyclictest19662-21expr19:35:181
4461991814,3cyclictest1348-21lxd20:10:491
4461991814,3cyclictest0-21swapper/120:40:021
446199181,16cyclictest0-21swapper/123:15:001
446199181,16cyclictest0-21swapper/121:15:001
446199181,15cyclictest0-21swapper/100:25:011
446199180,3cyclictest31781-21perf21:55:001
446199180,17cyclictest27847-21dpkg22:45:001
446099182,15cyclictest0-21swapper/021:05:150
4460991814,3cyclictest14500-21snapd22:03:210
4460991814,3cyclictest14499-21snapd23:20:280
4460991814,3cyclictest0-21swapper/022:10:160
4460991812,5cyclictest0-21swapper/020:15:010
446099181,1cyclictest0-21swapper/023:35:590
4462991715,1cyclictest207792sleep223:25:552
4462991715,1cyclictest0-21swapper/219:46:062
4462991714,2cyclictest4324-21ntp_kernel_err22:00:182
4462991714,2cyclictest4099-21H222:10:212
4462991714,2cyclictest3985-21H222:10:212
4462991714,2cyclictest11376-21nfsd421:15:222
4462991713,3cyclictest15662-21perf23:20:012
446299170,2cyclictest9474-21sshd21:11:342
446299170,2cyclictest8439-21latency19:15:152
446299170,2cyclictest28974-21fschecks_time20:50:132
446299170,2cyclictest28804-21chrt21:47:042
446299170,2cyclictest24958-21http_loadtime23:35:152
446299170,2cyclictest24578-21latency00:30:162
446299170,2cyclictest21065-21/usr/sbin/munin22:30:212
446299170,2cyclictest14501-21snapd19:50:582
446299170,2cyclictest14117-21taskset20:25:112
446299170,16cyclictest6171-21nfsd423:00:172
446299170,16cyclictest5303-21vmstat23:55:242
446299170,16cyclictest455-21plymouthd20:25:002
446299170,16cyclictest399-20systemd-journal23:40:022
446299170,16cyclictest3989-21H222:10:212
446299170,16cyclictest30711-21python322:50:012
446299170,16cyclictest24249-21chrt22:35:332
446299170,16cyclictest22142-21sed20:40:012
446299170,16cyclictest22138-21python320:40:012
446299170,16cyclictest16913-21nfsd421:25:182
446299170,16cyclictest16366-21cron22:25:002
446299170,16cyclictest1526-21lxd20:48:502
446299170,16cyclictest14504-21snapd19:40:292
446299170,16cyclictest11716-21apt-key00:10:002
446299170,16cyclictest10991-21expr23:10:162
446299170,16cyclictest1035-21thermald23:50:202
446299170,16cyclictest0-21swapper/220:14:022
446299170,15cyclictest0-21swapper/222:05:132
4461991715,1cyclictest4099-21H222:10:211
4461991715,1cyclictest18720-21expr21:30:121
4461991714,2cyclictest9808-21expr22:10:161
4461991714,2cyclictest9051-21systemctl19:15:191
4461991714,2cyclictest28433-21sed21:45:221
4461991714,2cyclictest25076-21if_err_eno123:35:161
4461991714,2cyclictest15841-21cat22:20:221
4461991714,2cyclictest12193-21awk22:15:181
4461991714,2cyclictest0-21swapper/123:25:111
4461991713,3cyclictest0-21swapper/123:01:551
446199171,1cyclictest6043-21cut19:10:191
446199171,1cyclictest17088-21cat23:20:161
446199171,15cyclictest0-21swapper/120:40:151
446199170,2cyclictest4035-21H222:10:211
446199170,2cyclictest31559-21cpuspeed_turbos22:50:151
446199170,2cyclictest2723-21nfsd421:00:171
446199170,2cyclictest27221-21cstates19:50:151
446199170,2cyclictest23561-21cron21:40:021
446199170,2cyclictest21857-21basename21:35:151
446199170,2cyclictest19951-21cat22:30:151
446199170,2cyclictest15081-21taskset19:27:271
446199170,2cyclictest10661-21chrt20:16:381
446199170,1cyclictest3979-21H222:10:211
446199170,17cyclictest0-21swapper/123:55:221
446199170,16cyclictest8142-21cstates23:05:151
446199170,16cyclictest6565-21cstates00:00:131
446199170,16cyclictest399-20systemd-journal22:35:171
446199170,16cyclictest3985-21H222:10:211
446199170,16cyclictest32766-21runrttasks21:55:151
446199170,16cyclictest32189-21cat20:55:211
446199170,16cyclictest32189-21cat20:55:201
446199170,16cyclictest3135-21cat22:00:131
446199170,16cyclictest30967-21gpg-connect-age22:50:011
446199170,16cyclictest30859-21expr19:55:181
446199170,16cyclictest27158-21mailstats20:45:221
446199170,16cyclictest2007-21systemd-journal21:07:091
446199170,16cyclictest18236-21ntp_states20:30:191
446199170,16cyclictest16108-21expr21:25:141
446199170,16cyclictest1536-21mailstats20:00:221
446199170,16cyclictest13318-21cat21:20:141
446199170,16cyclictest11565-21ntp_states21:15:221
4460991715,1cyclictest0-21swapper/022:09:510
4460991715,1cyclictest0-21swapper/020:55:210
4460991715,1cyclictest0-21swapper/020:55:200
4460991714,2cyclictest9696-21cat20:15:180
4460991714,2cyclictest28022-21expr21:45:200
4460991714,2cyclictest24577-21expr19:45:150
4460991714,2cyclictest2439-21latency_hist22:00:010
4460991714,2cyclictest24235-21tr21:40:130
4460991714,2cyclictest23180-21munin-run00:30:010
4460991714,2cyclictest17995-21postgres19:34:590
4460991714,2cyclictest10845-21expr23:10:140
4460991713,3cyclictest5196-21grep23:00:120
446099170,2cyclictest966-21idleruntime23:50:160
446099170,2cyclictest3987-21H222:10:210
446099170,2cyclictest3976-21H222:10:210
446099170,2cyclictest29734-21expr21:50:130
446099170,2cyclictest29470-21missed_timers22:45:180
446099170,2cyclictest29326-21latency20:50:150
446099170,2cyclictest2841-21expr21:00:170
446099170,2cyclictest27553-21http22:45:010
446099170,2cyclictest23950-21missed_timers20:40:200
446099170,2cyclictest22924-21systemctl19:40:210
446099170,2cyclictest15856-21cpuspeed_turbos21:25:140
446099170,2cyclictest15413-21grep20:25:160
446099170,2cyclictest14710-21/usr/sbin/munin19:25:200
446099170,2cyclictest14505-21snapd00:10:210
446099170,2cyclictest10678-21ls21:15:170
446099170,16cyclictest8360-21fschecks_time23:05:150
446099170,16cyclictest32267-21apt-get20:00:130
446099170,16cyclictest27031-21smartctl00:35:140
446099170,16cyclictest2677-21/usr/sbin/munin20:05:180
446099170,16cyclictest26230-21fschecks_count20:45:160
446099170,16cyclictest18653-21cpuspeed_turbos19:35:140
446099170,16cyclictest13605-21expr23:15:150
446099170,16cyclictest1057-21cron00:35:010
446099170,15cyclictest4099-21H222:10:210
4462991614,1cyclictest30640-21apt-get22:50:012
4462991614,1cyclictest29955-21expr19:55:152
4462991614,1cyclictest0-21swapper/222:55:152
4462991614,1cyclictest0-21swapper/221:40:152
4462991613,2cyclictest32239-21/usr/sbin/munin20:00:112
4462991613,2cyclictest30216-21cat23:45:152
4462991613,2cyclictest17277-21nfsd423:20:172
446299160,2cyclictest3976-21H222:10:212
446299160,1cyclictest13409-21ls19:25:132
446299160,1cyclictest0-21swapper/221:50:142
446299160,1cyclictest0-21swapper/220:30:152
446299160,15cyclictest31252-21cpuspeed_turbos20:55:162
446299160,15cyclictest31252-21cpuspeed_turbos20:55:162
446299160,15cyclictest22624-21pzem_current21:35:212
446299160,15cyclictest19086-21perl21:30:132
446299160,15cyclictest10208-21latency_hist23:10:012
446299160,15cyclictest0-21swapper/223:30:142
446299160,15cyclictest0-21swapper/223:30:132
446299160,15cyclictest0-21swapper/221:05:152
446299160,15cyclictest0-21swapper/220:15:192
4461991614,1cyclictest13489-21expr23:15:151
4461991614,1cyclictest0-21swapper/120:20:151
4461991614,1cyclictest0-21swapper/119:32:371
4461991613,2cyclictest21955-21expr23:30:141
4461991613,2cyclictest21955-21expr23:30:131
4460991614,1cyclictest31239-21python322:50:010
4460991614,1cyclictest11347-21runrttasks20:20:040
4460991614,1cyclictest0-21swapper/022:30:150
4460991614,1cyclictest0-21swapper/021:30:100
4460991614,1cyclictest0-21swapper/020:35:180
4460991614,1cyclictest0-21swapper/000:15:010
446099160,2cyclictest22853-21grep23:30:180
446099160,2cyclictest22853-21grep23:30:180
446099160,2cyclictest10253-21grep19:20:130
446099160,1cyclictest0-21swapper/022:35:200
446099160,1cyclictest0-21swapper/020:30:170
446099160,15cyclictest8826-21/usr/sbin/munin21:10:190
446099160,15cyclictest8700-21cut19:15:170
446099160,15cyclictest5123-21expr19:10:140
446099160,15cyclictest29488-21find19:55:110
446099160,15cyclictest2802-21Xwayland00:02:340
446099160,15cyclictest22420-21nfsd421:35:180
446099160,15cyclictest0-21swapper/023:25:180
446099160,15cyclictest0-21swapper/022:55:120
446099160,15cyclictest0-21swapper/021:20:130
4460991513,1cyclictest0-21swapper/023:40:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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