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2026-09-22 - 14:14
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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 Sep 22, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275532286255,20sleep20-21swapper/219:07:522
275622274242,21sleep10-21swapper/119:08:001
275182268235,22sleep00-21swapper/019:07:260
276572266234,21sleep30-21swapper/319:09:133
159122810,0sleep10-21swapper/122:45:011
48552660,0sleep30-21swapper/300:33:353
254362640,0sleep20-21swapper/222:11:442
186472590,0sleep10-21swapper/123:44:271
52352570,0sleep10-21swapper/121:40:171
73142540,0sleep00-21swapper/023:18:120
90982530,0sleep30-21swapper/322:21:103
310892210,0sleep10-21swapper/120:25:181
31112170,0sleep10-21swapper/122:17:591
284262160,1sleep327812-21cyclictest00:09:083
8352150,0sleep10-21swapper/120:30:191
285862150,0sleep10-21swapper/100:28:211
110692150,0sleep20-21swapper/222:41:472
49722140,0sleep00-21swapper/000:33:390
37002140,0sleep00-21swapper/021:40:050
277942130,0sleep20-21swapper/221:35:112
261762130,0sleep30-21swapper/323:29:453
2783099103,2cyclictest27178-21ssh22:13:013
264162100,0chrt0-21swapper/123:29:551
232512100,0sleep10-21swapper/121:12:561
278309993,1cyclictest0-21swapper/322:28:363
278309992,3cyclictest14917-21snmpd22:56:183
278309992,2cyclictest31318-21netstat22:15:173
278279998,1cyclictest28-21ksoftirqd/223:40:012
278189990,8cyclictest19929-21ssh21:49:460
25864290,0sleep00-21swapper/023:29:290
31344280,0sleep00-21swapper/022:15:170
278309982,2cyclictest14917-21snmpd20:20:303
278309982,1cyclictest0-21swapper/321:36:173
278309980,4cyclictest30234-21ntp_states21:55:183
278279987,1cyclictest28-21ksoftirqd/223:00:002
278279986,1cyclictest28-21ksoftirqd/220:10:012
278229987,1cyclictest22-21ksoftirqd/120:00:011
278229985,2cyclictest1-21systemd22:33:581
278229982,4cyclictest6952-21idleruntime-cro22:40:001
278229980,7cyclictest32574-21ssh23:52:161
278229980,7cyclictest31219-21sh21:36:351
278309974,2cyclictest275-21systemd-journal00:10:293
278309973,3cyclictest4908-21basename19:30:013
278309973,3cyclictest275-21systemd-journal19:58:283
278309973,3cyclictest22842-11brltty20:08:383
278309973,2cyclictest275-21systemd-journal22:52:063
278309973,1cyclictest0-21swapper/323:38:493
278309973,1cyclictest0-21swapper/321:45:213
278279974,2cyclictest5780-21sshd23:17:042
278279973,3cyclictest275-21systemd-journal20:55:002
278279973,3cyclictest275-21systemd-journal20:04:562
278279973,3cyclictest275-21systemd-journal00:32:292
278279973,3cyclictest275-21systemd-journal00:00:002
278279972,3cyclictest18916-21munin-run21:30:002
278279972,3cyclictest11590-21basename19:45:002
278279970,7cyclictest0-21swapper/223:01:232
278229976,1cyclictest22-21ksoftirqd/120:20:011
278229973,3cyclictest504-21dbus-daemon21:50:361
278229973,3cyclictest504-21dbus-daemon00:15:471
278229973,3cyclictest30195-21ntpq21:55:181
278229973,3cyclictest26565-21awk21:15:121
278229973,3cyclictest14917-21snmpd00:02:471
278229972,3cyclictest5575-21grep00:15:011
278229972,3cyclictest20489-21dump-pmu-power20:05:011
278229971,4cyclictest275-21systemd-journal19:40:121
278229971,3cyclictest2676-21munin-run19:25:001
278189976,1cyclictest25822-21ssh21:33:510
278189974,2cyclictest12-21ksoftirqd/000:00:010
278189973,3cyclictest275-21systemd-journal20:54:290
278189973,3cyclictest14917-21snmpd23:45:180
278189972,3cyclictest275-21systemd-journal21:24:400
278189972,1cyclictest0-21swapper/021:15:160
278189970,1cyclictest330-21ssh22:55:050
2538270,0sleep00-21swapper/021:58:280
22842270,0sleep20-21swapper/221:12:372
21948270,0sleep10-21swapper/121:30:561
13887270,2sleep3331rcuc/300:00:153
278309964,1cyclictest4410-21grep21:40:143
278309964,1cyclictest17650-21cut23:05:153
278309963,2cyclictest9522-21tune2fs23:00:133
278309963,2cyclictest9369-21sh22:02:153
278309963,2cyclictest7040-21cat20:45:133
278309963,2cyclictest504-21dbus-daemon20:50:493
278309963,2cyclictest4590-21ssh21:20:343
278309963,2cyclictest4379-21rm23:55:063
278309963,2cyclictest30219-21df_inode19:15:023
278309963,2cyclictest275-21systemd-journal21:51:273
278309963,2cyclictest25341-21ssh22:30:463
278309963,2cyclictest24312-21latency_hist22:50:023
278309963,2cyclictest18221-21ssh00:21:503
278309963,2cyclictest14917-21snmpd23:11:293
278309963,2cyclictest14917-21snmpd00:26:273
278309963,1cyclictest0-21swapper/323:43:063
278309963,1cyclictest0-21swapper/300:37:383
278309962,3cyclictest8334-21ntpq19:35:193
278309962,3cyclictest8179-21cat22:40:163
278309962,3cyclictest7159-21ntp_states00:15:183
278309962,3cyclictest275-21systemd-journal21:05:283
278309962,3cyclictest27013-21awk20:15:213
278309962,3cyclictest19228-21pluginstate21:10:183
278309962,3cyclictest14917-21snmpd23:34:523
278309962,3cyclictest14917-21snmpd22:08:453
278309962,3cyclictest14917-21snmpd20:35:283
278309962,3cyclictest14917-21snmpd20:11:323
278309962,3cyclictest14917-21snmpd19:30:023
278309962,1cyclictest0-21swapper/321:28:033
278309961,3cyclictest275-21systemd-journal21:31:213
278309960,6cyclictest0-21swapper/323:16:223
278309960,5cyclictest10215-21/usr/sbin/munin23:20:163
278279966,0cyclictest0-21swapper/223:32:412
278279966,0cyclictest0-21swapper/222:30:582
278279963,2cyclictest501-21in:imuxsock20:40:002
278279963,2cyclictest4967-21sh22:00:072
278279963,2cyclictest29071-21sh23:11:302
278279963,2cyclictest28147-21ssh21:54:372
278279963,2cyclictest275-21systemd-journal21:45:012
278279963,2cyclictest16096-21ssh00:01:092
278279963,2cyclictest14917-21snmpd19:25:322
278279963,1cyclictest0-21swapper/222:21:462
278279963,1cyclictest0-21swapper/221:48:552
278279962,3cyclictest7400-21cat20:45:152
278279962,3cyclictest31632-21mailstats22:15:202
278279962,3cyclictest30221-21cat00:10:152
278279962,3cyclictest275-21systemd-journal20:56:512
278279962,3cyclictest25791-21cat20:15:142
278279962,3cyclictest2380-21sshd19:21:412
278279962,3cyclictest20682-21ssh22:47:262
278279962,3cyclictest19707-21seq21:30:172
278279962,3cyclictest14917-21snmpd23:46:242
278279962,3cyclictest14917-21snmpd23:42:372
278279962,3cyclictest14917-21snmpd23:27:162
278279962,3cyclictest14917-21snmpd22:35:232
278279962,3cyclictest14917-21snmpd21:15:202
278279962,3cyclictest14917-21snmpd21:09:232
278279962,3cyclictest14917-21snmpd00:35:542
278279962,3cyclictest14917-21snmpd00:24:092
278279962,1cyclictest0-21swapper/200:15:302
278279960,6cyclictest0-21swapper/223:20:032
278279960,6cyclictest0-21swapper/222:28:562
278279960,6cyclictest0-21swapper/219:57:062
278229966,0cyclictest0-21swapper/121:48:371
278229964,1cyclictest3175-21grep21:20:141
278229963,2cyclictest9296-21ssh23:38:451
278229963,2cyclictest8399-21chrt20:46:331
278229963,2cyclictest7555-21cut19:35:131
278229963,2cyclictest7397-21sh22:00:461
278229963,2cyclictest7078-21ssh23:55:561
278229963,2cyclictest663-21runrttasks23:31:301
278229963,2cyclictest5784-21cron22:20:011
278229963,2cyclictest374-21cron19:20:011
278229963,2cyclictest31489-21sh22:54:141
278229963,2cyclictest275-21systemd-journal22:06:031
278229963,2cyclictest27506-21users23:10:201
278229963,2cyclictest14917-21snmpd22:25:051
278229963,1cyclictest0-21swapper/122:56:161
278229962,3cyclictest7983-21cat00:35:141
278229962,3cyclictest32050-21cat00:30:161
278229962,3cyclictest28611-21tail19:10:161
278229962,3cyclictest275-21systemd-journal00:23:301
278229962,3cyclictest23193-21wc00:05:191
278229962,3cyclictest20595-21cat23:45:141
278229962,3cyclictest14917-21snmpd22:40:551
278229962,3cyclictest14917-21snmpd22:10:251
278229962,3cyclictest14917-21snmpd21:08:291
278229962,3cyclictest14917-21snmpd20:12:061
278229962,3cyclictest11504-21grep21:25:121
278229962,3cyclictest11220-21cut23:20:181
278229960,2cyclictest15010-21ntp_states19:50:171
278189966,0cyclictest0-21swapper/023:12:380
278189966,0cyclictest0-21swapper/022:10:420
278189964,1cyclictest6955-21perf22:40:000
278189963,2cyclictest9611-21sh00:35:480
278189963,2cyclictest504-21dbus-daemon22:45:130
278189963,2cyclictest504-21dbus-daemon20:47:300
278189963,2cyclictest31146-21ssh22:54:000
278189963,2cyclictest28249-21sh23:50:120
278189963,2cyclictest21996-21ntpq20:05:180
278189963,2cyclictest18605-21sh22:27:000
278189963,2cyclictest17985-21sshd19:57:040
278189963,2cyclictest17218-21rm00:02:010
278189963,2cyclictest16006-21ssh22:05:570
278189963,2cyclictest14917-21snmpd19:50:260
278189963,2cyclictest13601-21ssh21:26:000
278189963,2cyclictest12302-21ssh23:20:360
278189963,1cyclictest0-21swapper/023:42:580
278189962,3cyclictest6467-21sensors_temp22:00:210
278189962,3cyclictest560-21gdbus19:15:010
278189962,3cyclictest21641-21cat21:50:170
278189962,3cyclictest18855-21cat21:10:150
278189962,3cyclictest14917-21snmpd23:01:300
278189962,3cyclictest14917-21snmpd22:44:230
278189962,3cyclictest14917-21snmpd22:30:040
278189962,3cyclictest14917-21snmpd20:41:010
278189962,3cyclictest14917-21snmpd20:31:130
278189962,3cyclictest14917-21snmpd20:25:110
278189962,3cyclictest14917-21snmpd20:24:230
278189962,3cyclictest14917-21snmpd20:12:560
278189962,3cyclictest14917-21snmpd19:41:050
278189962,3cyclictest14917-21snmpd19:20:280
278189962,3cyclictest14917-21snmpd00:25:200
278189962,3cyclictest14917-21snmpd00:06:560
278189962,1cyclictest141rcu_preempt19:35:150
278189961,3cyclictest425-21kworker/u8:123:10:010
278189961,3cyclictest275-21systemd-journal20:18:380
278189961,2cyclictest17053-21ssh00:20:560
278189960,6cyclictest0-21swapper/023:33:330
278189960,4cyclictest275-21systemd-journal19:33:080
21411260,1sleep10-21swapper/123:07:041
278309953,1cyclictest14995-21ntpq19:50:153
278309953,1cyclictest13697-21cat21:00:133
278309952,2cyclictest9628-21grep19:40:133
278309952,2cyclictest32031-21grep22:35:153
278309952,2cyclictest31534-21seq20:25:383
278309952,2cyclictest28305-21expr19:10:153
278309952,2cyclictest26277-21ssh21:15:013
278309952,2cyclictest18611-21cat20:00:153
278309952,2cyclictest14917-21snmpd20:40:043
278309952,2cyclictest1379-21cat19:20:153
278309952,2cyclictest13497-21taskset19:46:373
278309952,1cyclictest0-21swapper/323:50:093
278309952,1cyclictest0-21swapper/323:45:143
278309951,2cyclictest275-21systemd-journal20:31:143
278309950,3cyclictest12856-21sshd20:56:463
278279953,1cyclictest835-21taskset20:30:202
278279953,1cyclictest30730-21cat19:15:032
278279953,1cyclictest29010-21rm21:55:062
278279953,1cyclictest13918-21cut21:00:152
278279952,2cyclictest5550-21forks19:30:152
278279952,2cyclictest30225-21cat20:25:132
278279952,2cyclictest29821-21expr23:50:212
278279952,2cyclictest28675-21cat20:20:172
278279952,2cyclictest23416-21expr20:10:132
278279952,2cyclictest23087-21grep00:25:142
278279952,2cyclictest21563-21ssh00:05:072
278279952,2cyclictest14917-21snmpd19:37:342
278279952,2cyclictest14708-21cat19:50:132
278279952,2cyclictest13776-21ls22:05:122
278279951,3cyclictest28019-21/usr/sbin/munin19:10:162
278279951,3cyclictest25007-21ssh22:50:132
278279951,3cyclictest2399-21ssh21:20:062
278279951,3cyclictest17439-21sort23:05:142
278279951,3cyclictest14917-21snmpd19:46:252
278279950,0cyclictest141rcu_preempt20:40:122
278229953,1cyclictest69462sleep119:33:011
278229952,2cyclictest9221-21expr23:00:111
278229952,2cyclictest3607-21cat19:25:161
278229952,2cyclictest28946-21awk20:20:191
278229952,2cyclictest2098-21sort20:35:121
278229952,2cyclictest14092-21cat21:00:171
278229952,2cyclictest12907-21uname19:45:191
278229952,2cyclictest11802-21basename20:55:151
278229950,4cyclictest4501-21/usr/sbin/munin20:40:181
278229950,4cyclictest1584-21ssh23:15:041
278229950,4cyclictest10927-21idleruntime-cro20:55:011
278229950,3cyclictest275-21systemd-journal20:05:011
278189953,1cyclictest17613-21diskmemload21:35:010
278189952,2cyclictest6065-21ssh22:20:020
278189952,2cyclictest4616-21chrt19:26:480
278189952,2cyclictest3362-21cat23:35:120
278189952,2cyclictest2641-21cat20:35:160
278189952,2cyclictest18815-21expr20:00:170
278189952,2cyclictest16832-21/usr/sbin/munin21:05:180
278189952,2cyclictest14917-21snmpd19:45:020
278189952,2cyclictest14917-21snmpd00:15:080
278189952,2cyclictest14917-21snmpd00:10:050
278189952,2cyclictest11835-21cat20:55:160
278189951,3cyclictest31910-21grep19:15:180
278189951,3cyclictest13576-21expr21:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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