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2026-09-09 - 12:50
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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 all highest latencies:
System rackaslot8.osadl.org (updated Wed Sep 09, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
290122302273,19sleep20-21swapper/219:08:562
288682268238,19sleep00-21swapper/019:07:050
287882266236,19sleep30-21swapper/319:06:123
271192262236,17sleep10-21swapper/119:05:051
225992600,0sleep10-21swapper/121:30:531
16292590,0sleep30-21swapper/300:13:163
291332550,0sleep20-21swapper/200:30:052
265162550,0sleep10-21swapper/122:12:101
173262550,0sleep20-21swapper/223:44:162
159062550,0sleep10-21swapper/121:46:111
71722540,0sleep30-21swapper/323:56:553
140052530,0sleep20-21swapper/222:24:402
92312170,0sleep20-21swapper/223:00:162
218582170,0sleep10-21swapper/100:25:161
298752150,0sleep30-21swapper/323:31:483
201252130,0sleep20-21swapper/222:47:182
292962120,0sleep20-21swapper/222:52:542
31602290,0sleep00-21swapper/022:54:410
292109994,4cyclictest9166-21snmpd00:09:592
29475280,0sleep10-21swapper/123:31:301
292109987,1cyclictest29625-1kworker/u9:023:17:172
292059984,3cyclictest275-21systemd-journal00:39:241
292059980,2cyclictest18710-21diskmemload23:58:571
292029987,1cyclictest12-21ksoftirqd/020:25:000
292029986,2cyclictest12-21ksoftirqd/023:45:000
13651280,0sleep10-21swapper/123:02:591
6202270,2sleep06225-21rm23:56:130
3382270,0sleep10-21swapper/100:33:591
292149973,3cyclictest9166-21snmpd22:39:443
292149973,3cyclictest9166-21snmpd21:47:373
292149973,3cyclictest504-21dbus-daemon20:05:003
292149973,3cyclictest275-21systemd-journal23:15:593
292149970,6cyclictest11027-21sort19:40:013
292109974,2cyclictest9166-21snmpd21:38:572
292109973,3cyclictest9166-21snmpd21:34:392
292109973,3cyclictest9166-21snmpd20:03:192
292109973,3cyclictest275-21systemd-journal23:28:202
292109972,1cyclictest0-21swapper/222:31:542
292059974,2cyclictest275-21systemd-journal20:07:381
292059973,3cyclictest9166-21snmpd22:41:551
292059973,3cyclictest560-21gdbus22:20:011
292059970,4cyclictest7028-21perf22:40:011
292029974,2cyclictest3211-21/usr/sbin/munin23:35:180
292029974,2cyclictest12-21ksoftirqd/023:30:010
292029973,3cyclictest275-21systemd-journal20:20:000
292029973,3cyclictest275-21systemd-journal20:08:030
292029973,1cyclictest304372gltestperf21:55:170
21396270,0sleep00-21swapper/021:10:420
12475270,0sleep10-21swapper/122:04:131
292149966,0cyclictest0-21swapper/322:45:253
292149966,0cyclictest0-21swapper/322:30:023
292149966,0cyclictest0-21swapper/321:57:483
292149966,0cyclictest0-21swapper/321:36:513
292149966,0cyclictest0-21swapper/320:50:543
292149966,0cyclictest0-21swapper/300:23:053
292149964,1cyclictest4846-21cut21:40:113
292149963,2cyclictest9485-21ntp_states23:00:173
292149963,2cyclictest9166-21snmpd22:22:323
292149963,2cyclictest9076-21ssh22:01:373
292149963,2cyclictest8119-21gltestperf22:40:163
292149963,2cyclictest663-21runrttasks23:45:353
292149963,2cyclictest663-21runrttasks20:31:193
292149963,2cyclictest30324-21rm21:16:073
292149963,2cyclictest275-21systemd-journal19:52:193
292149963,2cyclictest275-21systemd-journal00:03:063
292149963,2cyclictest24720-21ssh22:10:473
292149963,2cyclictest1895-21ssh00:32:523
292149963,2cyclictest13623-21sh21:25:243
292149963,2cyclictest13623-21sh21:25:243
292149963,1cyclictest0-21swapper/323:25:373
292149962,3cyclictest9166-21snmpd20:45:313
292149962,3cyclictest9166-21snmpd19:28:543
292149962,3cyclictest9166-21snmpd00:25:053
292149962,3cyclictest6880-21expr19:30:133
292149962,3cyclictest674-21lldpd20:09:243
292149962,3cyclictest3912-21expr21:20:153
292149962,3cyclictest32028-21ls22:55:013
292149962,3cyclictest28124-21cat23:50:153
292149962,3cyclictest275-21systemd-journal20:21:283
292149962,3cyclictest22312-21cat21:50:193
292149962,3cyclictest12535-21expr20:55:133
292149962,3cyclictest11511-21ntp_kernel_err23:40:173
292149962,1cyclictest0-21swapper/323:35:143
292149962,1cyclictest0-21swapper/323:22:273
292149962,1cyclictest0-21swapper/323:22:273
292149962,1cyclictest0-21swapper/322:25:053
292149962,1cyclictest0-21swapper/300:06:453
292149961,4cyclictest25532-21needreboot20:10:183
292149961,3cyclictest275-21systemd-journal21:11:403
292149960,6cyclictest0-21swapper/323:11:463
292149960,6cyclictest0-21swapper/321:32:453
292149960,6cyclictest0-21swapper/300:35:583
292109963,2cyclictest9166-21snmpd21:00:562
292109963,2cyclictest8181-21sshd19:31:202
292109963,2cyclictest663-21runrttasks00:10:412
292109963,2cyclictest6175-21rm21:21:042
292109963,2cyclictest5569-21grep00:15:182
292109963,2cyclictest275-21systemd-journal19:44:382
292109963,2cyclictest26088-21ssh23:30:082
292109963,2cyclictest2330-21sh21:57:512
292109963,2cyclictest22624-21awk21:50:202
292109963,2cyclictest22433-21ssh21:11:292
292109963,2cyclictest18773-21cat21:10:002
292109963,2cyclictest16779-21ssh22:25:242
292109963,2cyclictest14187-21grep22:05:132
292109963,2cyclictest12509-21ssh22:04:142
292109963,2cyclictest1-21systemd00:00:002
292109963,2cyclictest1165-21ntpq22:55:162
292109962,3cyclictest976-21ls20:30:002
292109962,3cyclictest9166-21snmpd23:57:552
292109962,3cyclictest9166-21snmpd20:50:472
292109962,3cyclictest9166-21snmpd20:49:192
292109962,3cyclictest9166-21snmpd20:09:272
292109962,3cyclictest9166-21snmpd19:59:152
292109962,3cyclictest9166-21snmpd19:51:302
292109962,3cyclictest652-21cat22:35:202
292109962,3cyclictest6232-21hostname20:40:152
292109962,3cyclictest275-21systemd-journal19:37:072
292109962,3cyclictest275-21systemd-journal19:10:322
292109962,3cyclictest2748-21cat19:20:152
292109962,3cyclictest0-21swapper/200:25:202
292109962,2cyclictest29625-1kworker/u9:022:11:352
292109962,1cyclictest0-21swapper/223:52:052
292109960,6cyclictest0-21swapper/223:13:402
292109960,6cyclictest0-21swapper/222:18:062
292109960,6cyclictest0-21swapper/200:23:122
292109960,2cyclictest13139-21smart_sda21:25:192
292109960,2cyclictest13139-21smart_sda21:25:192
292059966,0cyclictest0-21swapper/123:51:301
292059966,0cyclictest0-21swapper/122:58:411
292059966,0cyclictest0-21swapper/122:31:381
292059966,0cyclictest0-21swapper/100:05:191
292059963,2cyclictest9800-21cron20:50:001
292059963,2cyclictest4863-21tune2fs21:40:101
292059963,2cyclictest4841-21rm23:16:541
292059963,2cyclictest275-21systemd-journal20:18:291
292059963,2cyclictest20661-21sshd23:06:591
292059963,2cyclictest18827-21tail19:55:161
292059963,2cyclictest16107-21sh22:05:371
292059963,2cyclictest11771-21sh23:20:481
292059963,2cyclictest11771-21sh23:20:481
292059963,2cyclictest1125-21ssh21:37:531
292059962,3cyclictest9166-21snmpd23:44:161
292059962,3cyclictest9166-21snmpd23:25:361
292059962,3cyclictest9166-21snmpd22:53:111
292059962,3cyclictest9166-21snmpd21:59:401
292059962,3cyclictest9166-21snmpd20:53:341
292059962,3cyclictest9166-21snmpd19:46:031
292059962,3cyclictest9166-21snmpd19:33:211
292059962,3cyclictest9166-21snmpd19:10:561
292059962,3cyclictest9166-21snmpd00:19:351
292059962,3cyclictest32012-21cat20:25:161
292059962,3cyclictest204952chrt22:28:161
292059962,3cyclictest17412-21cat21:05:151
292059962,3cyclictest13907-21grep00:20:181
292059962,3cyclictest12452-21idleruntime00:00:151
292059962,3cyclictest12046-21cat21:25:131
292059962,3cyclictest12046-21cat21:25:131
292059962,3cyclictest0-21swapper/119:26:221
292059962,1cyclictest0-21swapper/121:20:431
292059961,3cyclictest7593-21munin-plugin-st20:45:001
292059961,3cyclictest275-21systemd-journal19:40:021
292059961,2cyclictest29350-21ssh23:12:141
292059960,5cyclictest18715-21dpkg23:45:001
292059960,5cyclictest17694-21rm22:45:281
292059960,2cyclictest674-21lldpd19:15:221
292059960,0cyclictest0-21swapper/100:13:521
292029964,1cyclictest4575-21grep21:40:100
292029963,2cyclictest504-21dbus-daemon22:30:570
292029963,2cyclictest504-21dbus-daemon19:50:530
292029963,2cyclictest504-21dbus-daemon00:34:510
292029963,2cyclictest32025-21cat20:25:160
292029963,2cyclictest275-21systemd-journal21:31:250
292029963,2cyclictest25421-21ssh22:11:200
292029963,2cyclictest25349-21irqstats20:10:170
292029963,2cyclictest19662-21cron21:30:010
292029963,2cyclictest19662-21cron21:30:010
292029963,2cyclictest18709-21apt-config23:45:000
292029963,1cyclictest0-21swapper/023:20:470
292029963,1cyclictest0-21swapper/023:20:460
292029963,1cyclictest0-21swapper/000:14:200
292029962,3cyclictest9166-21snmpd23:52:340
292029962,3cyclictest9166-21snmpd23:00:480
292029962,3cyclictest9166-21snmpd22:36:110
292029962,3cyclictest9166-21snmpd22:28:410
292029962,3cyclictest9166-21snmpd22:22:220
292029962,3cyclictest9166-21snmpd22:06:400
292029962,3cyclictest9166-21snmpd21:35:510
292029962,3cyclictest9166-21snmpd20:55:410
292029962,3cyclictest9166-21snmpd20:41:270
292029962,3cyclictest9166-21snmpd20:36:240
292029962,3cyclictest9166-21snmpd20:04:220
292029962,3cyclictest9166-21snmpd19:36:410
292029962,3cyclictest9166-21snmpd19:31:060
292029962,3cyclictest9166-21snmpd19:14:140
292029962,3cyclictest9166-21snmpd00:25:170
292029962,3cyclictest9166-21snmpd00:21:520
292029962,3cyclictest9166-21snmpd00:16:110
292029962,3cyclictest819-21cat22:55:150
292029962,3cyclictest504-21dbus-daemon23:15:340
292029962,3cyclictest4657-21expr19:25:130
292029962,3cyclictest32370-21sed22:15:220
292029962,3cyclictest275-21systemd-journal19:41:420
292029962,3cyclictest21625-21grep21:50:160
292029962,3cyclictest20528-21cat00:05:140
292029962,3cyclictest1824-21cat20:30:160
292029962,3cyclictest1587-21sshd19:17:190
292029962,2cyclictest30957-21sshd21:16:370
292029960,6cyclictest0-21swapper/023:06:440
292029960,6cyclictest0-21swapper/000:36:060
292149953,2cyclictest30357-21grep19:10:193
292149953,1cyclictest3556-21grep20:35:133
292149953,1cyclictest32066-21grep19:15:023
292149953,1cyclictest0-21swapper/322:55:023
292149952,2cyclictest9166-21snmpd19:45:063
292149952,2cyclictest9166-21snmpd00:15:023
292149952,2cyclictest674-21lldpd21:04:563
292149952,2cyclictest6541-21ntp_kernel_err20:40:173
292149952,2cyclictest501-21in:imuxsock20:25:083
292149952,2cyclictest17931-21seq19:55:103
292149952,2cyclictest16761-21cat23:05:123
292149952,2cyclictest14753-21cat22:05:143
292149952,2cyclictest11524-21cat19:40:143
292149951,3cyclictest3388-21ls19:20:183
292149951,3cyclictest17061-21cat21:05:133
292149950,4cyclictest31142-21df22:15:153
292109953,2cyclictest501-21in:imuxsock20:15:082
292109953,1cyclictest663-21runrttasks23:45:072
292109953,1cyclictest25255-21hddtemp_smartct20:10:152
292109953,1cyclictest12462-21grep20:55:132
292109952,2cyclictest9797-21expr23:20:142
292109952,2cyclictest9797-21expr23:20:142
292109952,2cyclictest9166-21snmpd21:40:032
292109952,2cyclictest9166-21snmpd20:20:012
292109952,2cyclictest504-21dbus-daemon21:45:022
292109952,2cyclictest4643-21expr19:25:132
292109952,2cyclictest4080-21cut20:35:152
292109952,2cyclictest32043-21grep19:15:012
292109952,2cyclictest2015-21ssh23:35:072
292109952,2cyclictest17798-21ntpq23:05:172
292109952,2cyclictest1640-21fschecks_time20:30:152
292109952,1cyclictest0-21swapper/221:15:052
292109952,1cyclictest0-21swapper/200:35:052
292109951,3cyclictest275-21systemd-journal19:45:442
292109950,3cyclictest7358-21rm22:40:062
292059955,0cyclictest0-21swapper/120:31:341
292059953,1cyclictest207972sleep120:00:171
292059953,1cyclictest15969-21expr19:50:141
292059952,2cyclictest9166-21snmpd21:50:041
292059952,2cyclictest4197-21cat20:35:161
292059952,2cyclictest30071-21ntp_offset20:20:171
292059952,2cyclictest27881-21expr21:15:141
292059952,2cyclictest25319-21cat20:10:161
292059952,2cyclictest2503-21expr23:35:141
292059952,2cyclictest24760-21kworker/u8:022:20:151
292059952,2cyclictest12602-21expr20:55:121
292059951,3cyclictest9254-21/usr/sbin/munin19:35:151
292059951,3cyclictest9166-21snmpd21:00:441
292059951,3cyclictest19927-21if_enp4s021:10:151
292059950,4cyclictest2363-21expr19:20:131
292029953,1cyclictest3041-21ntp_states19:20:170
292029952,2cyclictest9543-21taskset20:46:520
292029952,2cyclictest9166-21snmpd20:51:020
292029952,2cyclictest7304-21rm22:40:040
292029952,2cyclictest5508-21ssh22:00:070
292029952,2cyclictest24937-21ssh23:10:040
292029952,2cyclictest18312-21tune2fs23:25:140
292029952,2cyclictest17922-21taskset19:55:020
292029952,2cyclictest16909-21cut22:45:160
292029952,2cyclictest13574-21cpuspeed19:45:100
292029952,1cyclictest11478-40gzip00:00:000
292029951,3cyclictest9166-21snmpd21:00:080
292029951,3cyclictest3485-21/usr/sbin/munin21:20:190
292029951,3cyclictest17211-21tune2fs21:05:140
292029951,3cyclictest13808-21cat21:45:150
292149940,3cyclictest26846-21taskset20:15:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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