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2026-08-12 - 10:44
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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 Wed Aug 12, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276052318286,21sleep10-21swapper/119:05:381
276052318286,21sleep10-21swapper/119:05:371
279322279218,19sleep00-21swapper/019:09:510
279322279218,19sleep00-21swapper/019:09:510
277202266235,20sleep20-21swapper/219:07:082
277202266235,20sleep20-21swapper/219:07:082
277892263231,21sleep30-21swapper/319:08:013
277892263231,21sleep30-21swapper/319:08:013
106092900,0sleep30-21swapper/319:40:163
79162600,0sleep00-21swapper/000:18:580
308902590,0sleep30-21swapper/322:55:133
212892590,0sleep00-21swapper/023:47:500
314452570,0sleep30-21swapper/323:34:493
83362550,0sleep30-21swapper/322:21:203
50192550,0sleep10-21swapper/123:18:371
23912520,0sleep00-21swapper/022:18:100
32412190,0sleep10-21swapper/122:38:211
264052190,0sleep30-21swapper/322:52:083
323112170,0sleep20-21swapper/221:18:212
122492170,0sleep30-21swapper/300:01:363
297812150,0sleep30-21swapper/323:14:073
277432140,0sleep30-21swapper/321:15:183
135342140,0sleep20-21swapper/223:43:132
214762130,0sleep20-21swapper/220:05:222
86922120,0sleep10-21swapper/100:39:051
71572100,0sleep20-21swapper/222:20:282
2807399107,2cyclictest28-21ksoftirqd/219:15:022
2807399106,3cyclictest17591-21diskmemload21:12:172
2806799103,4cyclictest31712-21perf23:35:001
2806499108,1cyclictest12-21ksoftirqd/019:20:010
9281290,0chrt0-21swapper/000:39:330
29853290,0sleep20-21swapper/223:33:362
280649994,3cyclictest3687-21basename22:00:010
15855290,0sleep015856-21unixbench_singl19:50:170
9229280,0sleep10-21swapper/121:43:261
7404280,0sleep30-21swapper/323:20:103
28928280,0sleep10-21swapper/100:11:311
280809980,7cyclictest27554-21ssh21:54:483
280679982,1cyclictest14432-21idleruntime-cro23:05:001
6637270,0sleep00-21swapper/023:39:180
31626270,0sleep30-21swapper/300:13:373
280809973,3cyclictest5381-21cron22:40:013
280809973,3cyclictest5146-21cron19:30:003
280739975,1cyclictest28-21ksoftirqd/223:00:012
280739975,1cyclictest28-21ksoftirqd/222:40:012
280739975,1cyclictest24988-21diskstats23:50:132
280739974,2cyclictest20571-21sshd20:02:442
280739972,3cyclictest3499-21cut21:20:162
280739972,3cyclictest11980-21apt-get22:05:012
280679972,3cyclictest2051-21sh21:20:011
280679971,4cyclictest28913-21perf22:15:011
280649974,2cyclictest504-21dbus-daemon21:25:010
280649974,2cyclictest32477-21ntpq23:15:170
280649973,3cyclictest658-21snmpd21:08:320
280649973,3cyclictest658-21snmpd21:08:320
280649973,3cyclictest275-21systemd-journal23:05:570
280649973,1cyclictest15160-21idleruntime-cro23:25:000
280649972,3cyclictest21865-21turbostat22:50:000
280649971,3cyclictest6174-21munin-run20:45:010
24315270,0sleep30-21swapper/300:28:533
280809966,0cyclictest0-21swapper/322:40:243
280809964,2cyclictest12936-21/usr/sbin/munin21:45:183
280809964,1cyclictest8503-21df23:40:153
280809963,2cyclictest658-21snmpd22:46:293
280809963,2cyclictest5318-21sed22:00:203
280809963,2cyclictest504-21dbus-daemon20:00:323
280809963,2cyclictest504-21dbus-daemon00:15:063
280809963,2cyclictest3934-21ntpq21:20:193
280809963,2cyclictest3828-21cat22:00:013
280809963,2cyclictest32591-21df_inode23:35:133
280809963,2cyclictest31353-21sh23:15:083
280809963,2cyclictest25317-21ssh21:14:343
280809963,2cyclictest23471-21ssh22:30:233
280809963,2cyclictest15522-21ssh23:25:063
280809963,2cyclictest10185-11brltty19:51:423
280809962,3cyclictest8218-21expr19:35:143
280809962,3cyclictest658-21snmpd23:00:323
280809962,3cyclictest658-21snmpd22:25:093
280809962,3cyclictest658-21snmpd22:18:433
280809962,3cyclictest658-21snmpd22:05:343
280809962,3cyclictest658-21snmpd21:35:233
280809962,3cyclictest658-21snmpd21:25:013
280809962,3cyclictest658-21snmpd20:55:283
280809962,3cyclictest658-21snmpd20:35:183
280809962,3cyclictest658-21snmpd20:21:583
280809962,3cyclictest658-21snmpd20:19:043
280809962,3cyclictest658-21snmpd20:12:513
280809962,3cyclictest658-21snmpd00:30:423
280809962,3cyclictest658-21snmpd00:22:043
280809962,3cyclictest4872-21cat20:40:133
280809962,3cyclictest275-21systemd-journal21:05:013
280809962,3cyclictest275-21systemd-journal21:05:013
280809962,3cyclictest13402-21basename21:00:133
280809962,3cyclictest1-21systemd19:15:013
280809962,2cyclictest275-21systemd-journal21:42:253
280809962,1cyclictest0-21swapper/321:31:593
280809961,4cyclictest2121-21ssh00:35:133
280809960,6cyclictest0-21swapper/323:05:033
280809960,2cyclictest8502-21sed00:00:003
280809960,0cyclictest0-21swapper/323:47:023
280739966,0cyclictest0-21swapper/223:35:112
280739966,0cyclictest0-21swapper/223:14:002
280739966,0cyclictest0-21swapper/222:10:302
280739966,0cyclictest0-21swapper/200:05:152
280739964,1cyclictest28-21ksoftirqd/220:50:012
280739963,2cyclictest868-21sh22:16:592
280739963,2cyclictest658-21snmpd23:22:292
280739963,2cyclictest658-21snmpd21:53:492
280739963,2cyclictest658-21snmpd19:23:532
280739963,2cyclictest5598-21sh00:17:102
280739963,2cyclictest501-21in:imuxsock22:05:022
280739963,2cyclictest29949-21sshd21:35:502
280739963,2cyclictest24480-21sh21:33:002
280739963,2cyclictest1942-21sh23:16:152
280739963,2cyclictest18664-21ssh23:26:202
280739963,1cyclictest0-21swapper/223:57:372
280739962,3cyclictest658-21snmpd22:52:322
280739962,3cyclictest658-21snmpd21:02:252
280739962,3cyclictest658-21snmpd19:55:482
280739962,3cyclictest658-21snmpd19:50:182
280739962,3cyclictest658-21snmpd19:48:062
280739962,3cyclictest658-21snmpd19:42:542
280739962,3cyclictest658-21snmpd19:36:002
280739962,3cyclictest658-21snmpd19:31:512
280739962,3cyclictest658-21snmpd00:03:272
280739962,3cyclictest4873-21cat20:40:132
280739962,3cyclictest275-21systemd-journal20:55:432
280739962,3cyclictest275-21systemd-journal00:21:232
280739962,3cyclictest2556-21fschecks_count00:35:142
280739962,3cyclictest21362-21date22:30:012
280739962,3cyclictest19474-21seq23:07:302
280739961,3cyclictest275-21systemd-journal21:09:442
280739961,3cyclictest275-21systemd-journal21:09:442
280739961,3cyclictest1024-21perf00:15:002
280739961,2cyclictest17591-21diskmemload22:31:002
280739960,6cyclictest0-21swapper/221:45:582
280739960,6cyclictest0-21swapper/200:34:222
280739960,6cyclictest0-21swapper/200:27:162
280739960,5cyclictest14535-21diskstats22:45:132
280679966,0cyclictest0-21swapper/100:24:161
280679965,1cyclictest15140-11speech-driver21:02:191
280679963,2cyclictest8582-21sendmail_mailqu23:20:171
280679963,2cyclictest658-21snmpd22:52:471
280679963,2cyclictest658-21snmpd22:33:011
280679963,2cyclictest658-21snmpd21:55:361
280679963,2cyclictest658-21snmpd21:50:121
280679963,2cyclictest658-21snmpd19:41:541
280679963,2cyclictest504-21dbus-daemon21:27:251
280679963,2cyclictest504-21dbus-daemon21:11:051
280679963,2cyclictest504-21dbus-daemon19:15:011
280679963,2cyclictest4154-21ssh22:00:111
280679963,2cyclictest3569-21diskstats19:25:141
280679963,2cyclictest31495-21df19:15:141
280679963,2cyclictest27633-21ssh23:51:211
280679963,2cyclictest275-21systemd-journal22:41:031
280679963,2cyclictest22579-21ssh00:08:121
280679963,2cyclictest21720-21sh00:26:531
280679963,2cyclictest19270-21rm23:46:171
280679963,2cyclictest1463-21sh22:17:271
280679963,2cyclictest12282-21grep21:45:141
280679963,2cyclictest10577-21sshd23:40:561
280679962,3cyclictest658-21snmpd23:57:451
280679962,3cyclictest658-21snmpd20:57:521
280679962,3cyclictest658-21snmpd20:50:371
280679962,3cyclictest658-21snmpd20:32:521
280679962,3cyclictest658-21snmpd20:04:091
280679962,3cyclictest658-21snmpd19:36:241
280679962,3cyclictest6001-21cat22:20:151
280679962,3cyclictest504-21dbus-daemon00:31:111
280679962,3cyclictest21951-21ntpq20:05:241
280679962,3cyclictest15908-21expr23:25:131
280679962,3cyclictest15678-21seq22:25:431
280679962,3cyclictest1-21systemd21:05:211
280679962,3cyclictest1-21systemd21:05:201
280679962,2cyclictest275-21systemd-journal23:11:281
280679962,1cyclictest18538-21systemctl20:00:001
280679960,6cyclictest0-21swapper/122:05:501
280679960,6cyclictest0-21swapper/119:53:231
280679960,6cyclictest0-21swapper/100:02:141
280679960,5cyclictest19307-21/usr/sbin/munin21:30:201
280679960,2cyclictest30630-21/usr/sbin/munin22:55:131
280649966,0cyclictest0-21swapper/000:30:290
280649963,2cyclictest6539-21apt-get23:00:100
280649963,2cyclictest4444-21ssh22:58:460
280649963,2cyclictest31667-21tail22:35:210
280649963,2cyclictest275-21systemd-journal20:35:010
280649963,2cyclictest26063-21df00:10:130
280649963,2cyclictest22691-21ssh21:51:020
280649963,2cyclictest18262-21sh23:26:010
280649963,2cyclictest17591-21diskmemload23:10:070
280649963,2cyclictest17366-21ssh21:48:190
280649963,2cyclictest12170-21cat19:45:120
280649962,3cyclictest8318-21cat23:40:140
280649962,3cyclictest658-21snmpd23:56:060
280649962,3cyclictest658-21snmpd22:26:250
280649962,3cyclictest658-21snmpd20:45:550
280649962,3cyclictest658-21snmpd20:38:310
280649962,3cyclictest658-21snmpd20:10:120
280649962,3cyclictest658-21snmpd20:06:030
280649962,3cyclictest658-21snmpd20:01:270
280649962,3cyclictest658-21snmpd19:58:150
280649962,3cyclictest658-21snmpd19:44:330
280649962,3cyclictest658-21snmpd19:34:330
280649962,3cyclictest658-21snmpd19:11:260
280649962,3cyclictest658-21snmpd00:25:130
280649962,3cyclictest28312-21cat21:35:150
280649962,3cyclictest275-21systemd-journal00:01:200
280649962,3cyclictest22633-21ls22:30:180
280649962,3cyclictest20176-21sshd00:06:210
280649962,3cyclictest14040-21cat21:00:160
280649962,3cyclictest1-21systemd21:15:190
280649962,3cyclictest11118-21sensors_temp00:20:190
280649962,1cyclictest0-21swapper/023:52:050
280649962,1cyclictest0-21swapper/022:20:130
280649962,1cyclictest0-21swapper/021:42:300
280649962,1cyclictest0-21swapper/021:34:030
280649961,4cyclictest0-21swapper/021:25:220
280649961,3cyclictest674-21lldpd22:10:110
280649961,3cyclictest10921-21basename20:55:000
280649960,6cyclictest0-21swapper/022:41:220
280649960,6cyclictest0-21swapper/021:13:120
280809952,2cyclictest5810-21forks19:30:133
280809952,2cyclictest30600-21fschecks_count19:15:023
280809952,2cyclictest30443-21grep20:25:143
280809952,2cyclictest2510-21who19:20:223
280809952,2cyclictest24959-21expr23:50:133
280809952,2cyclictest23190-21ssh22:10:403
280809952,2cyclictest21689-21cat20:05:233
280809952,2cyclictest16831-21expr19:55:143
280809952,2cyclictest12696-21head19:45:143
280809951,3cyclictest9619-21cat20:50:153
280809951,3cyclictest7095-21cat20:45:163
280809951,3cyclictest1-21systemd20:30:123
280809951,1cyclictest0-21swapper/300:05:103
280739955,0cyclictest0-21swapper/223:00:042
280739952,2cyclictest9617-21cat20:50:152
280739952,2cyclictest3328-21grep19:25:132
280739952,2cyclictest32297-21awk19:15:182
280739952,2cyclictest30602-21cat20:25:162
280739952,2cyclictest28884-21systemctl20:20:192
280739952,2cyclictest28871-21gltestperf21:55:152
280739952,2cyclictest26357-21netstat20:15:172
280739952,2cyclictest23766-21head20:10:162
280739952,2cyclictest16566-21cat23:45:142
280739952,2cyclictest10956-21ssh21:25:082
280739951,3cyclictest3905-21cut21:40:132
280739951,3cyclictest275-21systemd-journal22:40:082
280739951,3cyclictest1945-21/usr/sbin/munin20:35:212
280679953,1cyclictest295712sleep120:23:551
280679953,1cyclictest17591-21diskmemload22:45:201
280679952,2cyclictest7448-21awk20:45:191
280679952,2cyclictest658-21snmpd20:10:181
280679952,2cyclictest275-21systemd-journal19:30:011
280679952,2cyclictest27331-21ssh21:35:021
280679952,2cyclictest1628-21cat19:20:161
280679952,2cyclictest1566-21chrt23:35:231
280679952,2cyclictest14658-21ssh23:05:011
280679952,2cyclictest1341-21sh00:15:061
280679952,2cyclictest12746-21ls19:45:151
280679951,3cyclictest4889-21irqstats20:40:131
280679951,3cyclictest30706-21cat20:25:171
280679951,3cyclictest26811-21expr20:15:211
280679950,4cyclictest3473-21tail21:20:171
280649955,0cyclictest0-21swapper/022:50:030
280649952,2cyclictest658-21snmpd19:35:120
280649952,2cyclictest27095-21taskset20:16:030
280649952,2cyclictest13029-21ls22:05:140
280649952,1cyclictest0-21swapper/023:30:030
280649951,3cyclictest658-21snmpd20:20:460
280649951,3cyclictest658-21snmpd19:26:090
280649951,3cyclictest4385-21grep22:00:140
280649951,3cyclictest29907-21/usr/sbin/munin20:25:190
280649951,3cyclictest11542-21df20:55:130
280739940,3cyclictest658-21snmpd20:30:042
280679940,3cyclictest1972-21dpkg20:35:151
280649940,3cyclictest649-21cron19:20:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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