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2026-05-27 - 04:09
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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 Wed May 27, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2144399267,18cyclictest10454-21postgres22:36:102
2143899257,17cyclictest0-21swapper/123:20:001
21438992523,2cyclictest0-21swapper/123:30:141
21443992422,1cyclictest0-21swapper/200:30:012
2144399240,6cyclictest24697-21nvmesmart_nvme020:10:202
21443992320,2cyclictest11788-21cpu19:50:152
21443992320,2cyclictest11212-21sort21:40:172
21443992319,3cyclictest27822-21nfsd400:05:202
2143799230,5cyclictest0-21swapper/000:35:450
21443992219,2cyclictest3983-21H222:10:212
2143799220,6cyclictest0-21swapper/022:49:320
2143799220,18cyclictest0-21swapper/020:55:170
2144399214,16cyclictest32252-21acpi22:20:122
2144399214,16cyclictest15515-21sort23:45:012
2144399213,17cyclictest30805-21cpuspeed_turbos21:20:142
2144399213,17cyclictest21691-21cut20:05:192
2144399212,18cyclictest0-21swapper/221:25:122
2144399212,18cyclictest0-21swapper/220:45:122
21443992118,2cyclictest3983-21H222:10:212
21443992118,2cyclictest24776-21chrt23:02:042
21443992118,2cyclictest21789-21fschecks_time23:55:152
21443992118,2cyclictest1907-21timerwakeupswit00:15:222
21443992117,3cyclictest28787-21runrttasks22:11:172
2144399211,17cyclictest0-21swapper/222:52:552
2143899212,18cyclictest0-21swapper/120:38:471
21437992110,1cyclictest0-21swapper/021:35:180
2144399203,16cyclictest12377-21fschecks_time00:35:152
2144399203,16cyclictest0-21swapper/223:31:162
2144399202,17cyclictest0-21swapper/222:05:152
2144399202,17cyclictest0-21swapper/222:04:492
2144399202,17cyclictest0-21swapper/222:04:492
2144399202,17cyclictest0-21swapper/220:50:142
2144399202,17cyclictest0-21swapper/220:22:352
21443992018,2cyclictest0-21swapper/219:26:012
21443992017,2cyclictest831-21taskset23:18:382
21443992017,2cyclictest5220-21fschecks_time23:25:142
21443992017,2cyclictest281162chrt20:17:202
21443992017,2cyclictest23419-21switchtime19:10:212
21443992017,2cyclictest1832-21latency_hist20:30:022
21443992017,2cyclictest179222chrt21:54:212
21443992017,2cyclictest0-21swapper/221:00:152
21443992017,2cyclictest0-21swapper/220:45:012
21443992017,2cyclictest0-21swapper/219:15:142
21443992017,2cyclictest0-21swapper/200:00:372
21443992015,4cyclictest0-21swapper/219:40:152
2143899204,9cyclictest0-21swapper/122:57:181
21438992016,2cyclictest25188-21grep00:00:191
21438992011,0cyclictest0-21swapper/121:35:001
2143799204,15cyclictest0-21swapper/019:37:180
2144399192,17cyclictest0-21swapper/223:37:292
2144399192,16cyclictest26104-21if_err_lxdbr021:10:162
2144399192,16cyclictest0-21swapper/223:10:152
2144399192,16cyclictest0-21swapper/223:09:572
2144399192,16cyclictest0-21swapper/222:40:162
2144399192,16cyclictest0-21swapper/222:16:152
2144399192,16cyclictest0-21swapper/219:36:412
2144399192,16cyclictest0-21swapper/200:25:112
21443991916,3cyclictest0-21swapper/222:25:112
21443991916,2cyclictest6137-21strings20:35:182
21443991916,2cyclictest0-21swapper/222:58:062
21443991916,2cyclictest0-21swapper/221:46:442
21443991916,2cyclictest0-21swapper/221:35:002
21443991916,2cyclictest0-21swapper/200:20:102
21443991915,3cyclictest0-21swapper/221:35:152
21443991915,3cyclictest0-21swapper/221:07:202
21443991915,3cyclictest0-21swapper/220:55:192
21443991915,3cyclictest0-21swapper/219:30:182
21443991913,3cyclictest0-21swapper/223:20:142
2144399191,17cyclictest0-21swapper/223:50:142
2144399191,17cyclictest0-21swapper/222:30:132
2144399191,17cyclictest0-21swapper/220:00:022
2144399190,17cyclictest14550-21snapd20:30:132
2143899194,1cyclictest0-21swapper/120:56:161
2143899193,9cyclictest16469-21python322:50:001
21438991917,1cyclictest0-21swapper/120:50:191
21438991915,3cyclictest0-21swapper/100:26:481
21438991914,4cyclictest0-21swapper/121:43:581
21438991914,3cyclictest28945-21fschecks_count23:10:151
21438991914,2cyclictest19523-21cron22:55:011
2143899190,16cyclictest3976-21H222:10:211
2143799193,1cyclictest0-21swapper/023:40:190
21437991915,3cyclictest7043-21nfsd422:30:160
2143799190,19cyclictest0-21swapper/000:01:590
2143799190,18cyclictest0-21swapper/022:55:340
2143799190,18cyclictest0-21swapper/020:52:430
2144399182,16cyclictest0-21swapper/223:45:192
21443991816,1cyclictest0-21swapper/221:20:012
2144399181,16cyclictest0-21swapper/221:55:132
2144399181,16cyclictest0-21swapper/219:50:002
2143899182,15cyclictest0-21swapper/121:51:501
21438991814,3cyclictest26178-21phpquery22:09:001
21438991814,3cyclictest14948-21sshd21:46:011
2143899181,16cyclictest30844-21cpuspeed_turbos21:20:141
2143899180,2cyclictest3983-21H222:10:211
2143899180,17cyclictest3985-21H222:10:211
2143899180,17cyclictest3976-21H222:10:211
2143799183,1cyclictest28953-21grep23:10:160
2143799182,15cyclictest18415-21needreboot20:00:190
21437991816,1cyclictest9-21ksoftirqd/022:07:170
21437991816,1cyclictest0-21swapper/019:55:040
21437991815,2cyclictest455-21plymouthd23:50:130
21437991815,2cyclictest0-21swapper/023:25:130
2143799181,1cyclictest0-21swapper/021:58:380
2143799180,3cyclictest29410-21tune2fs20:20:170
2143799180,2cyclictest0-21swapper/020:05:150
2143799180,17cyclictest12542-21munin-run21:45:000
2144399170,16cyclictest14928-21cat22:45:162
2143899172,1cyclictest0-21swapper/123:50:171
2143899172,1cyclictest0-21swapper/100:30:171
21438991715,1cyclictest0-21swapper/123:40:111
21438991714,2cyclictest8697-21cstates22:35:131
21438991714,2cyclictest6886-21grep22:30:171
21438991714,2cyclictest646-21awk22:20:171
21438991714,2cyclictest31435-21users22:15:211
21438991714,2cyclictest2759-21cat20:30:171
21438991714,2cyclictest21726-21/usr/sbin/munin19:10:161
21438991714,2cyclictest2127-21fschecks_count23:20:141
21438991714,2cyclictest20820-21sed22:00:011
21438991714,2cyclictest19220-21apt-get21:00:131
21438991714,2cyclictest17262-21apache_processe20:00:121
21438991714,2cyclictest15899-21cpuspeed_turbos23:45:131
21438991714,2cyclictest12931-21grep22:40:191
21438991714,2cyclictest12050-21expr19:50:141
2143899170,2cyclictest784-21expr19:30:131
2143899170,2cyclictest4685-21expr23:25:141
2143899170,2cyclictest29856-21missed_timers20:20:181
2143899170,2cyclictest27520-21ps20:15:211
2143899170,2cyclictest24195-21irqstats20:10:181
2143899170,2cyclictest22701-21apache_accesses23:00:101
2143899170,2cyclictest20268-21cp20:05:011
2143899170,2cyclictest1788-21cat00:15:221
2143899170,2cyclictest15418-21uname19:55:161
2143899170,2cyclictest1057-21cron19:25:011
2143899170,16cyclictest7315-21apache_accesses21:35:111
2143899170,16cyclictest4426-21awk22:25:191
2143899170,16cyclictest29067-21cron22:15:011
2143899170,16cyclictest2852-21apache_accesses00:20:111
2143899170,16cyclictest26550-21cron19:17:011
2143899170,16cyclictest24599-21php7.221:09:001
2143899170,16cyclictest21161-21apache_processe22:00:131
2143899170,16cyclictest21161-21apache_processe22:00:121
2143899170,16cyclictest12040-21cat00:35:151
2143899170,16cyclictest1079-21cups-browsed00:05:231
2143899170,16cyclictest10151-21lxd23:56:361
2143899170,16cyclictest0-21swapper/119:25:151
21437991715,1cyclictest0-21swapper/023:19:350
21437991715,1cyclictest0-21swapper/022:30:000
21437991714,2cyclictest8773-21irqstats20:40:170
21437991714,2cyclictest7037-21runrttasks20:37:060
21437991714,2cyclictest6822-21latency00:25:150
21437991714,2cyclictest29997-21expr22:15:130
21437991714,2cyclictest26615-21apache_volume00:05:150
21437991714,2cyclictest23382-21fschecks_time23:00:140
21437991714,2cyclictest16619-21latency23:45:160
21437991714,2cyclictest12048-21grep20:45:190
2143799171,15cyclictest27203-21/usr/sbin/munin19:20:220
2143799170,3cyclictest1336-21ntp_states22:20:210
2143799170,2cyclictest9939-21/usr/sbin/munin19:45:150
2143799170,2cyclictest9307-21cat00:30:130
2143799170,2cyclictest7496-21grep23:30:130
2143799170,2cyclictest4544-21latency_hist20:35:010
2143799170,2cyclictest4483-21/usr/sbin/munin00:20:180
2143799170,2cyclictest3985-21H222:10:210
2143799170,2cyclictest28145-21/usr/sbin/munin22:10:170
2143799170,2cyclictest26139-21/usr/sbin/munin23:05:160
2143799170,2cyclictest25247-21/usr/sbin/munin21:10:130
2143799170,2cyclictest22184-21apt-config21:05:000
2143799170,2cyclictest21454-21cat23:55:120
2143799170,2cyclictest1594-21systemd23:20:510
2143799170,2cyclictest1546-21apache_processe21:25:120
2143799170,2cyclictest14505-21snapd22:37:580
2143799170,2cyclictest11524-21/usr/sbin/munin23:35:190
2143799170,16cyclictest858-21df19:30:140
2143799170,16cyclictest4590-21apache_accesses21:30:130
2143799170,16cyclictest455-21plymouthd19:50:120
2143799170,16cyclictest421-21expr00:15:130
2143799170,16cyclictest3981-21H222:10:210
2143799170,16cyclictest30838-21/usr/sbin/munin19:25:160
2143799170,16cyclictest26512-21expr20:15:140
2143799170,16cyclictest26432-21chrt19:15:360
2143799170,16cyclictest25194-21sed20:10:220
2143799170,16cyclictest22562-21ntp_states22:00:210
2143799170,16cyclictest22562-21ntp_states22:00:210
2143799170,16cyclictest20612-21ntp_states21:00:190
2143799170,16cyclictest18029-21cat21:55:010
2143799170,16cyclictest17218-21apache_accesses22:50:120
2143799170,16cyclictest12919-21/usr/sbin/munin21:45:190
2143799170,16cyclictest11889-21cstates22:40:130
21438991614,1cyclictest1406-21gpg-connect-age21:25:031
21438991614,1cyclictest0-21swapper/123:35:101
21438991613,2cyclictest25941-21perl21:10:161
21438991613,2cyclictest25532-21sort23:05:131
2143899160,2cyclictest7871-21apache_volume20:40:111
2143899160,15cyclictest28126-21cpuspeed_turbos21:15:131
2143899160,15cyclictest1100-21snmpd00:10:121
2143899160,15cyclictest0-21swapper/119:35:131
2143799160,1cyclictest3450-21gsd-color21:20:130
2143799160,1cyclictest0-21swapper/019:10:140
2143799160,15cyclictest29611-21apache_accesses00:10:110
2143799160,15cyclictest0-21swapper/021:15:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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