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2026-04-13 - 12:47
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackaslot8.osadl.org (updated Mon Apr 13, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276742310287,15sleep10-21swapper/119:07:541
275422303276,17sleep20-21swapper/219:06:262
277162278248,19sleep00-21swapper/019:08:250
277702273242,21sleep30-21swapper/319:09:083
191452630,0sleep10-21swapper/123:27:441
183402600,0sleep00-21swapper/023:27:070
258502550,0sleep30-21swapper/322:13:273
199672520,0sleep20-21swapper/222:10:022
302042210,0sleep20-21swapper/222:15:262
163412180,0sleep30-21swapper/323:45:203
162222160,0sleep10-21swapper/121:47:421
44212140,0sleep20-21swapper/223:19:042
324492130,0sleep30-21swapper/321:18:363
312232130,0sleep00-21swapper/021:36:590
244402130,0sleep00-21swapper/000:30:180
207732120,0sleep10-21swapper/123:09:181
272382110,0sleep10-21swapper/122:53:371
2795899104,3cyclictest547-21munin-run19:20:012
215222100,2sleep3341ksoftirqd/322:50:143
11032290,1sleep30-21swapper/319:40:193
279629987,1cyclictest34-21ksoftirqd/300:00:013
279529983,3cyclictest275-21systemd-journal23:50:000
279629975,1cyclictest7694-21ssh22:21:433
279629973,3cyclictest658-21snmpd00:39:003
279629973,3cyclictest275-21systemd-journal23:17:133
279629973,3cyclictest0-21swapper/323:00:123
279629973,2cyclictest275-21systemd-journal00:15:063
279589975,2cyclictest483-21avahi-daemon21:55:012
279589973,3cyclictest658-21snmpd21:11:242
279589973,3cyclictest275-21systemd-journal23:57:262
279589973,3cyclictest21541-21diskstats20:05:132
279549973,3cyclictest658-21snmpd20:01:591
279549973,3cyclictest504-21dbus-daemon22:40:001
279549973,3cyclictest504-21dbus-daemon22:30:011
279549973,3cyclictest504-21dbus-daemon20:30:201
279549973,3cyclictest275-21systemd-journal22:50:001
279549972,3cyclictest12044-21grep22:25:011
279529973,3cyclictest658-21snmpd22:18:150
279529973,3cyclictest275-21systemd-journal00:18:300
279529973,3cyclictest16971-21users00:25:210
23052270,0sleep1211rcuc/121:51:381
4871260,0sleep00-21swapper/020:40:130
279629966,0cyclictest0-21swapper/323:40:443
279629966,0cyclictest0-21swapper/322:40:283
279629963,2cyclictest8908-21sh22:03:003
279629963,2cyclictest658-21snmpd22:05:033
279629963,2cyclictest658-21snmpd20:04:593
279629963,2cyclictest4125-21ssh22:59:273
279629963,2cyclictest31018-21ssh22:16:043
279629963,2cyclictest30052-11brltty21:13:593
279629963,2cyclictest26096-21/usr/sbin/munin20:15:143
279629963,2cyclictest26096-21/usr/sbin/munin20:15:143
279629963,2cyclictest2412-21expr20:35:133
279629963,2cyclictest16907-21ssh23:06:173
279629963,2cyclictest15692-21/usr/sbin/munin00:05:153
279629963,2cyclictest11041-21ssh23:22:493
279629963,2cyclictest10048-21sshd00:21:183
279629963,1cyclictest0-21swapper/322:32:253
279629963,1cyclictest0-21swapper/321:41:343
279629962,3cyclictest658-21snmpd23:36:293
279629962,3cyclictest658-21snmpd21:50:083
279629962,3cyclictest658-21snmpd21:33:223
279629962,3cyclictest658-21snmpd20:40:453
279629962,3cyclictest658-21snmpd19:31:283
279629962,3cyclictest658-21snmpd19:27:013
279629962,3cyclictest658-21snmpd19:17:373
279629962,3cyclictest658-21snmpd00:34:483
279629962,3cyclictest658-21snmpd00:11:333
279629962,3cyclictest658-21snmpd00:00:153
279629962,3cyclictest560-21gdbus20:10:013
279629962,3cyclictest28029-21grep21:35:153
279629962,3cyclictest275-21systemd-journal21:25:003
279629962,3cyclictest12549-21grep20:55:203
279629962,3cyclictest12205-21cat21:45:153
279629962,1cyclictest0-21swapper/323:26:483
279629962,1cyclictest0-21swapper/322:36:063
279629961,4cyclictest658-21snmpd19:50:133
279629960,6cyclictest0-21swapper/321:57:253
279629960,6cyclictest0-21swapper/319:10:053
279629960,5cyclictest32289-21apt-get20:30:133
279629960,5cyclictest22834-21cstates23:30:133
279629960,2cyclictest15230-21/usr/sbin/munin00:25:163
279629960,2cyclictest13360-21memory22:25:163
279629960,0cyclictest0-21swapper/323:53:583
279629960,0cyclictest0-21swapper/322:48:103
279589966,0cyclictest0-21swapper/200:30:142
279589963,2cyclictest8218-21ssh22:02:292
279589963,2cyclictest658-21snmpd23:40:592
279589963,2cyclictest658-21snmpd22:25:482
279589963,2cyclictest501-21in:imuxsock22:56:102
279589963,2cyclictest30989-21awk20:25:162
279589963,2cyclictest28999-21ssh21:15:562
279589963,2cyclictest23483-21sh22:31:102
279589963,2cyclictest22462-21ssh00:09:482
279589963,2cyclictest19749-21sh00:27:332
279589963,1cyclictest0-21swapper/223:45:442
279589962,3cyclictest9477-21cat20:50:172
279589962,3cyclictest658-21snmpd22:51:192
279589962,3cyclictest658-21snmpd22:11:452
279589962,3cyclictest658-21snmpd21:48:052
279589962,3cyclictest658-21snmpd21:03:212
279589962,3cyclictest658-21snmpd20:37:052
279589962,3cyclictest658-21snmpd20:24:082
279589962,3cyclictest658-21snmpd20:03:172
279589962,3cyclictest658-21snmpd19:57:342
279589962,3cyclictest658-21snmpd19:38:342
279589962,3cyclictest658-21snmpd19:25:222
279589962,3cyclictest5658-21df_inode19:30:122
279589962,3cyclictest5108-21expr22:40:142
279589962,3cyclictest504-21dbus-daemon19:49:452
279589962,3cyclictest491-21systemd-logind22:22:472
279589962,3cyclictest3950-21cat21:40:142
279589962,3cyclictest31751-21ntp_kernel_err23:35:172
279589962,3cyclictest31449-21ls00:15:112
279589962,3cyclictest30073-21cut22:35:182
279589962,3cyclictest275-21systemd-journal23:05:492
279589962,3cyclictest275-21systemd-journal20:33:072
279589962,3cyclictest17986-21date21:10:002
279589962,3cyclictest14525-21sh00:24:502
279589962,3cyclictest12374-21cat21:25:192
279589962,1cyclictest0-21swapper/221:57:582
279589962,1cyclictest0-21swapper/200:36:162
279589961,3cyclictest2817-21perf19:25:012
279589961,3cyclictest275-21systemd-journal20:40:122
279589961,3cyclictest25343-21munin-run20:15:012
279589960,6cyclictest0-21swapper/222:48:142
279549966,0cyclictest0-21swapper/123:56:481
279549966,0cyclictest0-21swapper/123:00:451
279549966,0cyclictest0-21swapper/122:16:141
279549963,2cyclictest658-21snmpd23:31:051
279549963,2cyclictest658-21snmpd21:16:541
279549963,2cyclictest501-21in:imuxsock19:30:091
279549963,2cyclictest30052-11brltty21:10:391
279549963,2cyclictest275-21systemd-journal20:12:161
279549963,2cyclictest275-21systemd-journal20:08:061
279549963,2cyclictest25439-21sh21:33:541
279549963,2cyclictest24992-21ssh22:12:471
279549963,2cyclictest2489-21sh00:36:381
279549963,2cyclictest23061-21cat23:10:161
279549963,2cyclictest16248-21sshd22:07:181
279549963,2cyclictest10956-21sh00:22:011
279549963,1cyclictest0-21swapper/100:18:231
279549962,3cyclictest7658-21awk23:40:181
279549962,3cyclictest658-21snmpd23:18:581
279549962,3cyclictest658-21snmpd21:24:401
279549962,3cyclictest658-21snmpd20:58:151
279549962,3cyclictest658-21snmpd20:50:091
279549962,3cyclictest658-21snmpd20:45:421
279549962,3cyclictest658-21snmpd19:15:131
279549962,3cyclictest658-21snmpd19:10:451
279549962,3cyclictest658-21snmpd00:30:031
279549962,3cyclictest5022-21cat20:40:141
279549962,3cyclictest29207-21tr21:55:191
279549962,3cyclictest275-21systemd-journal23:20:491
279549962,3cyclictest23148-21expr23:50:141
279549962,3cyclictest20223-21sshd00:08:041
279549962,3cyclictest15180-21fw_packets23:45:141
279549962,3cyclictest1509-21cat19:20:141
279549962,1cyclictest0-21swapper/122:00:161
279549962,1cyclictest0-21swapper/121:35:191
279549962,1cyclictest0-21swapper/100:00:171
279549960,6cyclictest0-21swapper/122:43:401
279549960,6cyclictest0-21swapper/121:40:011
279549960,6cyclictest0-21swapper/119:55:151
279549960,6cyclictest0-21swapper/100:26:231
279549960,5cyclictest11937-21/usr/sbin/munin19:45:211
279549960,0cyclictest0-21swapper/100:10:301
279529965,1cyclictest12-21ksoftirqd/019:15:010
279529963,2cyclictest7587-21sshd22:02:000
279529963,2cyclictest7376-21rt-features23:20:180
279529963,2cyclictest658-21snmpd19:54:580
279529963,2cyclictest504-21dbus-daemon22:10:420
279529963,2cyclictest4667-21ssh21:20:460
279529963,2cyclictest275-21systemd-journal21:55:010
279529963,2cyclictest21967-21readlink22:30:190
279529963,2cyclictest19108-21ssh23:08:000
279529963,2cyclictest14995-21rm22:06:200
279529963,2cyclictest10727-21sh23:42:200
279529963,2cyclictest10050-21ssh22:43:010
279529962,3cyclictest7342-21fschecks_time00:00:140
279529962,3cyclictest658-21snmpd23:35:140
279529962,3cyclictest658-21snmpd20:49:090
279529962,3cyclictest658-21snmpd20:29:080
279529962,3cyclictest658-21snmpd20:23:320
279529962,3cyclictest658-21snmpd19:49:370
279529962,3cyclictest658-21snmpd19:42:280
279529962,3cyclictest5543-21expr19:30:120
279529962,3cyclictest26881-21grep20:15:190
279529962,3cyclictest26881-21grep20:15:190
279529962,3cyclictest17040-21expr19:55:130
279529962,3cyclictest11683-21cat21:45:130
279529962,3cyclictest11099-21cat21:25:120
279529962,3cyclictest1036-21cat19:20:120
279529962,2cyclictest4895-21basename22:20:160
279529962,1cyclictest0-21swapper/022:38:340
279529962,1cyclictest0-21swapper/022:28:190
279529962,1cyclictest0-21swapper/021:57:020
279529962,1cyclictest0-21swapper/021:43:200
279529962,1cyclictest0-21swapper/000:09:120
279529961,4cyclictest504-11dbus-daemon20:10:360
279529960,6cyclictest0-21swapper/023:51:500
279529960,6cyclictest0-21swapper/023:32:280
279529960,6cyclictest0-21swapper/023:15:520
279529960,6cyclictest0-21swapper/022:49:170
279529960,5cyclictest5563-21ssh00:39:020
279529960,5cyclictest15772-21/usr/sbin/munin21:05:200
9540250,0sleep30-21swapper/320:50:173
279629953,1cyclictest23960-21gltestperf20:10:143
279629953,1cyclictest21973-21sh23:10:053
279629953,1cyclictest17125-21fschecks_count19:55:143
279629952,2cyclictest8453-21ntpq19:35:163
279629952,2cyclictest7251-21cat20:45:153
279629952,2cyclictest30847-21date20:25:153
279629952,2cyclictest28890-21proc_pri20:20:183
279629952,2cyclictest2136-21rm21:20:013
279629952,2cyclictest16306-21gltestperf21:05:143
279629952,2cyclictest13718-21expr21:00:123
279629951,3cyclictest658-21snmpd19:20:043
279629951,3cyclictest12510-21grep19:45:163
279589953,1cyclictest663-21runrttasks19:50:132
279589953,1cyclictest6120-21fschecks_count23:00:142
279589953,1cyclictest501-21in:imuxsock00:00:012
279589952,2cyclictest6845-21cat23:20:152
279589952,2cyclictest6770-21cat20:45:132
279589952,2cyclictest658-21snmpd21:35:132
279589952,2cyclictest658-21snmpd19:40:012
279589952,2cyclictest658-21snmpd19:10:032
279589952,2cyclictest23829-21awk23:10:202
279589952,2cyclictest23002-21ssh00:10:042
279589952,2cyclictest19884-21cat21:30:152
279589952,2cyclictest11396-21df20:55:132
279589951,3cyclictest26069-21/usr/sbin/munin20:15:142
279589951,3cyclictest26069-21/usr/sbin/munin20:15:142
279589951,3cyclictest23252-21cat23:30:152
279589951,3cyclictest14900-21head23:25:132
279589950,4cyclictest22546-21taskset23:50:022
279589950,3cyclictest275-21systemd-journal21:20:142
279549953,1cyclictest10881-21apt-get21:25:121
279549952,2cyclictest7716-21cat19:35:121
279549952,2cyclictest658-21snmpd20:15:021
279549952,2cyclictest658-21snmpd20:15:021
279549952,2cyclictest658-21snmpd19:25:071
279549952,2cyclictest30904-21cpuspeed_turbos23:35:131
279549952,2cyclictest3056-21cat20:35:171
279549952,2cyclictest29303-21ssh22:55:021
279549952,2cyclictest20452-21ssh22:30:021
279549952,2cyclictest14736-21expr19:50:141
279549952,2cyclictest10409-21cat19:40:141
279549951,3cyclictest16755-21ntp_states21:05:171
279549951,3cyclictest13533-21apt-get21:00:011
279549951,1cyclictest30065-21apt-get20:25:121
279549950,2cyclictest674-21lldpd20:21:211
279529953,1cyclictest21119-21date20:05:010
279529952,2cyclictest6965-21ssh00:20:070
279529952,2cyclictest658-21snmpd23:55:020
279529952,2cyclictest658-21snmpd23:10:130
279529952,2cyclictest658-21snmpd21:10:000
279529952,2cyclictest658-21snmpd19:35:010
279529952,2cyclictest658-21snmpd19:15:030
279529952,2cyclictest5827-21expr23:00:130
279529952,2cyclictest3567-21grep19:25:140
279529952,2cyclictest29927-21ssh22:55:130
279529952,2cyclictest2778-21cat20:35:160
279529952,2cyclictest275-21systemd-journal20:03:310
279529952,2cyclictest26311-21taskset21:15:050
279529952,2cyclictest23026-21taskset00:10:050
279529952,2cyclictest20791-21cron22:50:000
279529952,2cyclictest18933-21ssh21:30:030
279529952,2cyclictest11208-21cstates20:55:130
279529951,3cyclictest9462-21cat20:50:170
279529951,3cyclictest658-21snmpd20:30:020
279529951,3cyclictest13547-21/usr/sbin/munin21:00:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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