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2026-08-18 - 09:32
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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 Tue Aug 18, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41162278244,22sleep10-21swapper/119:06:461
24002273224,20sleep30-21swapper/319:05:113
40872271241,19sleep20-21swapper/219:06:312
41702270243,18sleep00-21swapper/019:07:250
236502650,0sleep10-21swapper/122:44:331
179742630,0sleep00-21swapper/021:23:390
84292620,0sleep10-21swapper/123:13:561
115632600,0sleep10-21swapper/122:17:261
170282590,1sleep00-21swapper/022:40:150
33262580,0sleep00-21swapper/022:31:470
45252530,0sleep10-21swapper/121:54:241
151092380,0sleep00-21swapper/023:36:570
290372170,0sleep027265-21kworker/u8:021:10:170
243492170,0sleep30-21swapper/300:01:353
89142160,0sleep00-21swapper/021:56:230
322442160,0sleep20-21swapper/223:08:442
100122160,0sleep00-21swapper/022:35:310
190972150,0sleep20-21swapper/221:24:292
261472140,0sleep30-21swapper/322:25:493
62772130,0sleep20-21swapper/200:30:012
4762130,0sleep20-21swapper/222:30:162
117032120,0sleep10-21swapper/122:36:481
310152100,0chrt0-21swapper/123:07:471
44869990,2cyclictest2837-21ssh21:14:532
10267290,0chrt0-21swapper/021:38:160
5369280,0sleep30-21swapper/319:10:173
44889982,4cyclictest275-21systemd-journal21:50:013
44869986,1cyclictest10617-21ssh22:35:582
44779984,2cyclictest275-21systemd-journal23:46:410
14917280,0sleep10-21swapper/100:35:121
44889976,1cyclictest14468-21ssh23:36:283
44889974,2cyclictest18770-21grep19:40:133
44889973,3cyclictest9186-21sshd19:16:213
44889973,3cyclictest275-21systemd-journal21:59:403
44889973,3cyclictest275-21systemd-journal21:06:323
44889973,3cyclictest23745-21ntpq21:00:193
44889970,1cyclictest0-21swapper/323:24:483
44869976,1cyclictest28747-21ssh22:08:332
44869975,1cyclictest32286-21sshd21:31:442
44869975,1cyclictest28-21ksoftirqd/200:20:002
44869973,2cyclictest275-21systemd-journal21:25:062
44819973,3cyclictest275-21systemd-journal19:16:341
44819972,4cyclictest275-21systemd-journal23:28:451
44819972,3cyclictest1425-21cron20:10:001
44819971,3cyclictest2202-21munin-run20:15:001
44819970,4cyclictest3443-21munin-run23:50:001
44779973,3cyclictest275-21systemd-journal19:28:080
44779973,3cyclictest15206-21ntpq19:30:170
44779970,1cyclictest7860-21ssh23:51:470
28493270,2chrt28-21ksoftirqd/222:27:362
44889966,0cyclictest0-21swapper/321:10:043
44889964,1cyclictest15203-21ntp_states19:30:173
44889963,2cyclictest9037-21ssh00:11:543
44889963,2cyclictest6443-21ssh23:50:423
44889963,2cyclictest5398-21/usr/sbin/munin21:35:163
44889963,2cyclictest4563-21ntpq21:15:183
44889963,2cyclictest31717-21awk20:05:193
44889963,2cyclictest30727-21snmpd23:13:013
44889963,2cyclictest30384-21ssh23:45:523
44889963,2cyclictest275-21systemd-journal23:06:393
44889963,2cyclictest21064-21cat21:25:173
44889963,2cyclictest19286-21ntpq20:50:183
44889963,2cyclictest16610-21rm21:41:423
44889963,2cyclictest16208-21cat22:20:173
44889963,2cyclictest12249-21ssh23:15:283
44889963,2cyclictest12193-21tr19:25:143
44889963,2cyclictest11702-21ssh22:36:483
44889963,2cyclictest10740-21ssh00:32:133
44889963,2cyclictest0-21swapper/322:31:423
44889963,1cyclictest0-21swapper/323:00:263
44889962,3cyclictest560-21gdbus22:05:013
44889962,3cyclictest4058-21cut23:30:183
44889962,3cyclictest30727-21snmpd23:42:263
44889962,3cyclictest30727-21snmpd23:25:433
44889962,3cyclictest30727-21snmpd21:31:113
44889962,3cyclictest30727-21snmpd20:22:033
44889962,3cyclictest30727-21snmpd20:18:333
44889962,3cyclictest30727-21snmpd19:56:323
44889962,3cyclictest30727-21snmpd19:46:083
44889962,3cyclictest30727-21snmpd00:23:303
44889962,3cyclictest21781-21expr21:45:143
44889960,6cyclictest0-21swapper/322:11:113
44889960,6cyclictest0-21swapper/300:26:013
44889960,6cyclictest0-21swapper/300:09:473
44889960,4cyclictest275-21systemd-journal23:56:163
44889960,0cyclictest0-21swapper/322:15:093
44869966,0cyclictest0-21swapper/223:00:162
44869966,0cyclictest0-21swapper/222:40:182
44869966,0cyclictest0-21swapper/200:06:542
44869965,1cyclictest28-21ksoftirqd/223:50:002
44869964,1cyclictest5018-21irqstats23:50:162
44869963,2cyclictest9484-21ssh21:18:342
44869963,2cyclictest4179-21awk23:30:182
44869963,2cyclictest30727-21snmpd22:11:422
44869963,2cyclictest30727-21snmpd21:01:072
44869963,2cyclictest30727-21snmpd20:06:512
44869963,2cyclictest30687-21sh23:26:492
44869963,2cyclictest29010-21sshd22:47:172
44869963,2cyclictest275-21systemd-journal20:24:392
44869963,2cyclictest275-21systemd-journal19:11:342
44869963,2cyclictest27057-21ssh00:22:542
44869963,2cyclictest26879-21sshd21:08:392
44869963,2cyclictest19967-21taskset00:37:542
44869963,2cyclictest19183-21ssh22:21:512
44869963,2cyclictest14943-21cat22:00:162
44869963,2cyclictest13607-21ssh21:59:582
44869963,2cyclictest11234-21/usr/sbin/munin23:35:112
44869963,1cyclictest275-21systemd-journal22:17:192
44869962,3cyclictest30727-21snmpd23:55:532
44869962,3cyclictest30727-21snmpd23:40:562
44869962,3cyclictest30727-21snmpd23:20:342
44869962,3cyclictest30727-21snmpd21:42:532
44869962,3cyclictest30727-21snmpd20:53:432
44869962,3cyclictest30727-21snmpd20:31:392
44869962,3cyclictest30727-21snmpd20:29:002
44869962,3cyclictest30727-21snmpd20:11:332
44869962,3cyclictest30727-21snmpd20:04:242
44869962,3cyclictest30727-21snmpd19:41:532
44869962,3cyclictest30727-21snmpd19:36:112
44869962,3cyclictest30727-21snmpd19:27:142
44869962,3cyclictest30727-21snmpd00:25:422
44869962,3cyclictest22530-21wc00:00:192
44869962,3cyclictest16092-21gdbus20:45:012
44869962,3cyclictest0-21swapper/221:53:282
44869962,1cyclictest0-21swapper/221:37:142
44869960,6cyclictest0-21swapper/222:53:542
44869960,6cyclictest0-21swapper/221:47:522
44869960,3cyclictest10132-21runrttasks23:15:032
44819966,0cyclictest0-21swapper/122:54:201
44819963,2cyclictest9089-21cat20:30:001
44819963,2cyclictest30727-21snmpd21:35:321
44819963,2cyclictest30727-21snmpd21:10:311
44819963,2cyclictest30727-21snmpd19:50:541
44819963,2cyclictest27008-21ssh22:26:291
44819963,2cyclictest23700-21ssh00:01:051
44819963,2cyclictest22423-21sh23:41:091
44819963,2cyclictest17430-21awk20:45:211
44819963,2cyclictest16803-21sh22:01:011
44819963,2cyclictest16336-21sh23:18:371
44819963,2cyclictest1-21systemd00:30:181
44819963,2cyclictest11830-21ssh21:20:101
44819963,2cyclictest11464-21taskset19:21:371
44819963,2cyclictest11143-21ssh21:19:501
44819963,2cyclictest10443-21ssh21:57:321
44819963,1cyclictest26844-21kworker/1:200:25:561
44819963,1cyclictest0-21swapper/122:07:501
44819962,3cyclictest504-21dbus-daemon21:01:451
44819962,3cyclictest504-21dbus-daemon00:10:181
44819962,3cyclictest30727-21snmpd23:54:381
44819962,3cyclictest30727-21snmpd23:38:501
44819962,3cyclictest30727-21snmpd23:22:371
44819962,3cyclictest30727-21snmpd22:45:071
44819962,3cyclictest30727-21snmpd21:25:141
44819962,3cyclictest30727-21snmpd19:30:411
44819962,3cyclictest30727-21snmpd19:11:351
44819962,3cyclictest30727-21snmpd00:18:091
44819962,3cyclictest30727-21snmpd00:06:351
44819962,3cyclictest22720-21cat00:20:161
44819962,3cyclictest20900-21expr20:55:141
44819962,3cyclictest18439-21cat19:40:011
44819961,4cyclictest0-21swapper/123:55:191
44819960,6cyclictest0-21swapper/121:47:281
44819960,2cyclictest11822rm22:10:531
44779963,2cyclictest427-21ssh00:06:430
44779963,2cyclictest3654-21sh21:34:370
44779963,2cyclictest304-21systemd-udevd19:50:360
44779963,2cyclictest28171-21ssh00:23:450
44779963,2cyclictest27966-21ssh23:05:280
44779963,2cyclictest275-21systemd-journal19:56:490
44779963,2cyclictest23204-21head21:45:220
44779963,2cyclictest20792-21ssh23:01:350
44779963,2cyclictest20433-21ssh22:03:480
44779963,2cyclictest19687-21cat23:40:120
44779963,2cyclictest10663-21sshd00:32:100
44779962,3cyclictest504-21dbus-daemon22:05:200
44779962,3cyclictest504-21dbus-daemon00:20:000
44779962,3cyclictest3728-21cat21:15:130
44779962,3cyclictest3352-21sensors_temp23:10:200
44779962,3cyclictest30727-21snmpd23:15:430
44779962,3cyclictest30727-21snmpd22:56:580
44779962,3cyclictest30727-21snmpd22:53:520
44779962,3cyclictest30727-21snmpd22:25:430
44779962,3cyclictest30727-21snmpd22:20:420
44779962,3cyclictest30727-21snmpd22:19:180
44779962,3cyclictest30727-21snmpd21:02:010
44779962,3cyclictest30727-21snmpd20:38:120
44779962,3cyclictest30727-21snmpd20:30:120
44779962,3cyclictest30727-21snmpd19:21:110
44779962,3cyclictest30727-21snmpd00:39:000
44779962,3cyclictest304-21systemd-udevd21:54:360
44779962,3cyclictest304-21systemd-udevd20:54:350
44779962,3cyclictest27763-21cat23:25:160
44779962,3cyclictest26001-21ntpq21:05:180
44779962,3cyclictest25051-21expr22:45:130
44779962,3cyclictest19747-21awk19:40:190
44779962,3cyclictest17542-21cat20:45:210
44779962,3cyclictest14285-21cat20:40:160
44779962,1cyclictest0-21swapper/000:28:430
44779962,1cyclictest0-21swapper/000:11:140
44779960,6cyclictest0-21swapper/023:57:120
44779960,6cyclictest0-21swapper/023:21:140
44779960,6cyclictest0-21swapper/022:13:230
44779960,6cyclictest0-21swapper/021:41:230
44779960,6cyclictest0-21swapper/000:00:260
44779960,0cyclictest0-21swapper/023:30:150
431260,0sleep30-21swapper/322:50:043
17583260,0sleep30-21swapper/300:17:043
44889954,1cyclictest501-21in:imuxsock20:34:553
44889953,1cyclictest32654-21apt-get20:10:143
44889953,1cyclictest16287-21tr20:45:133
44889952,2cyclictest674-21lldpd20:25:043
44889952,2cyclictest30727-21snmpd22:00:123
44889952,2cyclictest30727-21snmpd21:20:043
44889952,2cyclictest24746-21basename22:45:123
44889952,2cyclictest20806-21cat20:55:143
44889952,2cyclictest14005-21entropy20:40:143
44889952,2cyclictest12305-21ntpq20:35:173
44889952,2cyclictest10451-21cat19:20:153
44889952,2cyclictest0-21swapper/322:40:013
44889952,1cyclictest0-21swapper/322:55:013
44889952,1cyclictest0-21swapper/300:35:103
44889951,3cyclictest504-21dbus-daemon19:50:013
44889951,3cyclictest28191-21/usr/sbin/munin20:00:193
44869952,2cyclictest5180-21rm00:10:082
44869952,2cyclictest30727-21snmpd22:55:072
44869952,2cyclictest30727-21snmpd20:55:042
44869952,2cyclictest30727-21snmpd20:35:032
44869952,2cyclictest30727-21snmpd20:15:032
44869952,2cyclictest30727-21snmpd19:24:532
44869952,2cyclictest30727-21snmpd19:15:172
44869952,2cyclictest26205-21expr19:55:142
44869952,2cyclictest24409-21ntpq19:50:162
44869952,2cyclictest1946-21sh23:10:112
44869952,2cyclictest14230-21hwlatdetect20:40:152
44869951,3cyclictest14796-21expr19:30:142
44819952,2cyclictest8829-21sh22:55:021
44819952,2cyclictest6171-21grep20:20:211
44819952,2cyclictest3167-21cat23:30:131
44819952,2cyclictest275-21systemd-journal22:30:011
44819952,2cyclictest2659-21cstates20:15:131
44819952,2cyclictest25779-21cat19:55:001
44819952,2cyclictest21017-21cat19:45:121
44819952,2cyclictest18931-21grep23:00:201
44819952,2cyclictest18783-21cut20:50:151
44819952,2cyclictest15381-21ssh22:20:111
44819952,1cyclictest0-21swapper/121:40:111
44819951,3cyclictest9828-21cat20:30:161
44819951,3cyclictest28310-21cat20:00:141
44819951,3cyclictest20200-21grep19:40:211
44819951,3cyclictest11992-21/usr/sbin/munin19:25:131
44819951,1cyclictest22-21ksoftirqd/120:35:151
44819950,3cyclictest275-21systemd-journal21:07:111
44819950,2cyclictest491-21systemd-logind21:30:061
44779953,1cyclictest19797-21latency_hist21:25:010
44779952,2cyclictest7718-21tr19:15:130
44779952,2cyclictest6939-21/usr/sbin/munin20:25:130
44779952,2cyclictest31074-21if_enp4s020:05:150
44779952,2cyclictest30727-21snmpd20:10:030
44779952,2cyclictest28581-21expr20:00:140
44779952,2cyclictest20929-21cat19:45:110
44779952,2cyclictest17135-21cat19:35:150
44779951,3cyclictest5050-21ls19:10:140
44779951,3cyclictest30727-21snmpd20:20:360
44779951,3cyclictest20827-21expr20:55:140
44779950,4cyclictest2432-21/usr/sbin/munin20:15:140
44889940,3cyclictest16474-21grep19:35:123
44869940,3cyclictest20908-21runrttasks19:45:092
44819940,3cyclictest13685-21cat20:40:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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