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2026-08-16 - 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 Sun Aug 16, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244272311288,14sleep20-21swapper/219:05:262
244632301271,19sleep10-21swapper/119:05:531
246112264233,21sleep00-21swapper/019:07:330
245642252220,21sleep30-21swapper/319:06:553
177252620,0sleep30-21swapper/321:50:013
124252620,0sleep20-21swapper/221:27:052
294102610,0sleep20-21swapper/223:13:332
271652600,0sleep20-21swapper/222:52:512
263732600,0sleep10-21swapper/119:10:191
213452600,0sleep00-21swapper/020:10:150
217662570,0sleep00-21swapper/022:50:000
199392570,0sleep00-21swapper/000:24:530
47202560,0sleep20-21swapper/222:58:592
320582550,0sleep10-21swapper/100:31:281
297082550,0sleep20-21swapper/223:51:412
221842550,1sleep122182-21grep20:10:201
325532540,0sleep00-21swapper/021:39:360
183232540,0sleep20-21swapper/221:11:072
140552520,0sleep20-21swapper/200:20:242
215252200,0sleep00-21swapper/022:30:140
23622190,1sleep20-21swapper/223:55:132
102392190,1sleep110240-21latency_hist00:00:011
7532140,0sleep30-21swapper/319:25:143
23872140,0sleep00-21swapper/021:40:160
32762130,0sleep20-21swapper/219:30:162
308692110,0sleep00-21swapper/023:14:390
2491199118,2cyclictest12-21ksoftirqd/023:45:010
240712100,0sleep20-21swapper/222:31:282
249119994,3cyclictest275-21systemd-journal19:15:060
2639280,0sleep30-21swapper/319:30:143
249219987,1cyclictest28-21ksoftirqd/219:15:012
249169986,1cyclictest22-21ksoftirqd/123:44:591
249169984,3cyclictest275-21systemd-journal22:46:081
249119984,3cyclictest275-21systemd-journal22:10:010
249119984,3cyclictest275-21systemd-journal00:20:000
249119981,1cyclictest22124-21apt-get22:50:130
23784280,0sleep10-21swapper/122:31:151
12794280,0sleep00-21swapper/021:46:260
25132270,0sleep10-21swapper/100:27:271
249259976,1cyclictest34-21ksoftirqd/322:50:003
249259976,1cyclictest34-21ksoftirqd/320:00:013
249259975,1cyclictest34-21ksoftirqd/322:00:013
249259974,2cyclictest504-21dbus-daemon21:25:003
249259973,3cyclictest504-21dbus-daemon21:00:003
249259973,3cyclictest30727-21snmpd21:10:163
249259973,3cyclictest275-21systemd-journal22:33:083
249259973,1cyclictest141rcu_preempt00:37:163
249259973,1cyclictest0-21swapper/322:41:563
249259971,5cyclictest17586-21ssh23:45:023
249259970,1cyclictest50850irq/136-enp4s0-21:36:583
249219976,1cyclictest28-21ksoftirqd/221:20:002
249219974,2cyclictest28-21ksoftirqd/222:30:012
249219973,3cyclictest30727-21snmpd00:14:512
249219973,3cyclictest275-21systemd-journal23:41:322
249219973,1cyclictest0-21swapper/223:31:102
249219972,4cyclictest30727-21snmpd22:41:312
249219972,3cyclictest674-21lldpd00:15:022
249219970,4cyclictest24167-21idleruntime-cro23:30:002
249169975,1cyclictest22-21ksoftirqd/100:00:011
249169974,2cyclictest14652-21users21:05:201
249169973,3cyclictest275-21systemd-journal22:37:031
249169973,3cyclictest13777-21ls19:55:141
249169970,6cyclictest9577-21ntpq20:55:151
249169970,1cyclictest22634-21sh21:33:281
249119973,3cyclictest3173-21needreboot23:55:170
249119973,3cyclictest27742-21cat00:10:150
249119973,3cyclictest275-21systemd-journal23:00:000
249119973,3cyclictest275-21systemd-journal22:11:450
249119973,3cyclictest275-21systemd-journal20:03:450
249119973,3cyclictest19084-21ntpq21:50:170
249119973,2cyclictest275-21systemd-journal20:19:250
249119972,3cyclictest275-21systemd-journal22:37:020
249119972,1cyclictest15071-21diskmemload00:34:310
249119971,3cyclictest23515-21munin-run21:15:000
249119970,4cyclictest3932-21idleruntime-cro20:45:010
12466270,0sleep20-21swapper/200:00:222
31170260,1sleep20-21swapper/222:16:432
30025260,0sleep30-21swapper/300:10:523
249259966,0cyclictest0-21swapper/323:30:033
249259963,2cyclictest504-21dbus-daemon22:52:113
249259963,2cyclictest504-21dbus-daemon19:20:013
249259963,2cyclictest3725-21rm23:36:203
249259963,2cyclictest3697-21taskset20:42:153
249259963,2cyclictest30727-21snmpd22:10:093
249259963,2cyclictest30727-21snmpd20:29:473
249259963,2cyclictest30727-21snmpd19:43:053
249259963,2cyclictest30727-21snmpd19:13:553
249259963,2cyclictest30314-21sshd23:52:083
249259963,2cyclictest27034-21sh00:28:553
249259963,2cyclictest21745-21ssh21:32:483
249259963,2cyclictest20139-21sh21:50:373
249259963,2cyclictest15733-21cat23:05:163
249259963,1cyclictest0-21swapper/321:15:353
249259962,3cyclictest3210-21cat22:00:193
249259962,3cyclictest30727-21snmpd23:20:563
249259962,3cyclictest30727-21snmpd22:57:043
249259962,3cyclictest30727-21snmpd20:32:243
249259962,3cyclictest30727-21snmpd20:06:173
249259962,3cyclictest30727-21snmpd19:51:083
249259962,3cyclictest30727-21snmpd19:20:113
249259962,3cyclictest30727-21snmpd00:05:153
249259962,3cyclictest28392-21cat22:15:153
249259962,3cyclictest275-21systemd-journal23:17:043
249259962,3cyclictest23583-21cat23:10:133
249259962,3cyclictest1-21systemd19:38:343
249259962,1cyclictest0-21swapper/323:58:073
249259962,1cyclictest0-21swapper/323:41:373
249259962,1cyclictest0-21swapper/321:29:463
249259960,6cyclictest0-21swapper/323:25:293
249259960,6cyclictest0-21swapper/322:20:033
249259960,6cyclictest0-21swapper/300:30:333
249259960,6cyclictest0-21swapper/300:21:033
249259960,5cyclictest10644-21gzip00:00:013
249259960,4cyclictest0-21swapper/322:35:453
249259960,2cyclictest11863-21sh22:05:163
249259960,0cyclictest0-21swapper/322:25:563
249219963,2cyclictest501-21in:imuxsock20:15:402
249219963,2cyclictest4988-21expr19:35:142
249219963,2cyclictest30727-21snmpd20:36:362
249219963,2cyclictest275-21systemd-journal22:09:032
249219963,2cyclictest275-21systemd-journal20:30:012
249219963,2cyclictest20643-21ssh21:31:582
249219963,2cyclictest19270-21/usr/sbin/munin00:05:202
249219963,2cyclictest1505-21sh23:15:362
249219962,3cyclictest6746-21cat23:00:102
249219962,3cyclictest491-21systemd-logind23:23:122
249219962,3cyclictest30727-21snmpd23:38:382
249219962,3cyclictest30727-21snmpd23:09:352
249219962,3cyclictest30727-21snmpd22:48:522
249219962,3cyclictest30727-21snmpd22:36:102
249219962,3cyclictest30727-21snmpd22:21:122
249219962,3cyclictest30727-21snmpd21:56:172
249219962,3cyclictest30727-21snmpd20:50:062
249219962,3cyclictest30727-21snmpd20:48:152
249219962,3cyclictest30727-21snmpd20:32:392
249219962,3cyclictest30727-21snmpd20:10:202
249219962,3cyclictest30727-21snmpd20:00:112
249219962,3cyclictest30727-21snmpd19:50:202
249219962,3cyclictest275-21systemd-journal21:20:522
249219962,3cyclictest2636-21cat20:40:142
249219962,3cyclictest19110-21run-parts23:45:182
249219962,3cyclictest14346-21interrupts19:55:162
249219962,1cyclictest0-21swapper/221:52:532
249219962,1cyclictest0-21swapper/221:46:542
249219962,1cyclictest0-21swapper/221:41:422
249219961,4cyclictest0-21swapper/200:35:122
249219960,6cyclictest25650-21ssh00:27:512
249219960,6cyclictest0-21swapper/221:36:192
249219960,5cyclictest25058-21taskset22:13:272
249219960,5cyclictest18417-21/usr/sbin/munin20:05:202
249169966,0cyclictest0-21swapper/122:24:581
249169966,0cyclictest0-21swapper/121:29:301
249169965,1cyclictest15071-21diskmemload21:40:551
249169964,2cyclictest10780-21users19:45:211
249169964,1cyclictest19241-21wc23:45:191
249169963,2cyclictest892-21cat23:35:131
249169963,2cyclictest8494-21ssh22:41:251
249169963,2cyclictest5153-21ntpq20:45:191
249169963,2cyclictest4704-21rm21:22:331
249169963,2cyclictest4306-21seq23:17:431
249169963,2cyclictest31656-21sendmail_mailst19:20:191
249169963,2cyclictest28044-21cat19:15:011
249169963,2cyclictest275-21systemd-journal20:26:391
249169963,2cyclictest26781-21cat21:55:131
249169963,2cyclictest23620-21tune2fs20:15:141
249169963,2cyclictest20536-21processes00:05:211
249169963,2cyclictest20126-21ssh23:07:531
249169963,2cyclictest17077-21cat23:25:161
249169963,2cyclictest16837-21idleruntime20:00:161
249169963,2cyclictest14198-21ssh21:47:291
249169963,2cyclictest135932sleep122:06:101
249169963,2cyclictest12509-21ssh23:22:341
249169962,3cyclictest5479-21cat00:35:151
249169962,3cyclictest3277-21cat19:30:171
249169962,3cyclictest30727-21snmpd23:10:081
249169962,3cyclictest30727-21snmpd22:00:241
249169962,3cyclictest30727-21snmpd21:51:481
249169962,3cyclictest30727-21snmpd21:18:071
249169962,3cyclictest30727-21snmpd21:01:361
249169962,3cyclictest30727-21snmpd20:53:211
249169962,3cyclictest30727-21snmpd20:30:121
249169962,3cyclictest30727-21snmpd19:38:321
249169962,3cyclictest30727-21snmpd19:27:531
249169962,3cyclictest30727-21snmpd00:22:551
249169962,3cyclictest30727-21snmpd00:15:301
249169962,3cyclictest25303-21expr23:30:151
249169962,3cyclictest22489-21expr22:50:131
249169962,3cyclictest17263-21head21:10:211
249169962,1cyclictest0-21swapper/122:15:181
249169960,6cyclictest0-21swapper/122:12:421
249169960,6cyclictest0-21swapper/119:44:011
249169960,5cyclictest25313-21cat21:35:141
249169960,4cyclictest15071-21diskmemload00:12:011
249169960,4cyclictest0-21swapper/122:28:591
249169960,0cyclictest0-21swapper/122:55:021
249119965,1cyclictest12-21ksoftirqd/022:20:010
249119964,2cyclictest12-21ksoftirqd/020:35:010
249119963,2cyclictest663-21runrttasks00:02:440
249119963,2cyclictest504-21dbus-daemon21:20:520
249119963,2cyclictest32756-21sh22:55:410
249119963,2cyclictest31712-21sshd23:15:070
249119963,2cyclictest27320-21ls23:50:180
249119963,2cyclictest20861-21expr00:25:110
249119963,2cyclictest16575-21expr23:25:130
249119963,2cyclictest14707-21ssh21:28:500
249119963,2cyclictest13093-21sshd19:51:220
249119963,2cyclictest13033-21chrt22:25:140
249119963,2cyclictest12-21ksoftirqd/020:35:130
249119963,2cyclictest0-21swapper/023:35:180
249119962,4cyclictest50950irq/137-enp4s0-23:20:500
249119962,3cyclictest5494-21cat00:35:150
249119962,3cyclictest30727-21snmpd23:45:270
249119962,3cyclictest30727-21snmpd20:58:120
249119962,3cyclictest30727-21snmpd19:38:230
249119962,3cyclictest30727-21snmpd19:29:560
249119962,3cyclictest26618-21basename19:10:210
249119962,3cyclictest26415-21/usr/sbin/munin21:55:150
249119962,3cyclictest16069-21ntpq23:05:180
249119962,3cyclictest14394-21wc19:55:170
249119962,1cyclictest15079-21munin-run21:10:000
249119961,3cyclictest275-21systemd-journal22:40:080
249119960,6cyclictest0-21swapper/023:32:090
249119960,3cyclictest0-21swapper/022:15:140
249119960,3cyclictest0-21swapper/022:00:050
249119960,0cyclictest0-21swapper/000:05:280
11649260,0sleep10-21swapper/123:02:511
10587260,0sleep30-21swapper/300:19:093
249259952,2cyclictest7853-21grep20:50:183
249259952,2cyclictest4826-21basename20:45:173
249259952,2cyclictest345-21cat20:35:173
249259952,2cyclictest23551-21expr20:15:133
249259952,2cyclictest20891-21expr20:10:133
249259952,2cyclictest16015-21cmp20:00:013
249259952,2cyclictest1250-21ssh21:40:113
249259952,2cyclictest11238-21expr21:00:123
249259951,3cyclictest7622-21/usr/sbin/munin23:00:153
249259951,3cyclictest26367-21/usr/sbin/munin20:20:153
249259951,1cyclictest9235-21apt-get19:45:133
249259950,5cyclictest0-21swapper/321:05:113
249219953,1cyclictest501-21in:imuxsock19:20:132
249219952,2cyclictest9494-21cat19:45:142
249219952,2cyclictest26126-21cat20:20:132
249219952,2cyclictest13648-21grep21:05:142
249219951,3cyclictest9604-21ntp_states20:55:152
249219951,3cyclictest30727-21snmpd21:00:122
249219951,3cyclictest30727-21snmpd19:40:082
249219951,3cyclictest29746-21grep19:15:212
249219951,3cyclictest29234-21expr00:30:142
249219950,4cyclictest443-21grep19:25:132
249219950,1cyclictest2864-21df22:00:172
249169952,2cyclictest32139-21runrttasks20:35:141
249169952,2cyclictest30727-21snmpd19:50:111
249169952,2cyclictest2430-21cut20:40:131
249169952,2cyclictest18538-21cat20:05:121
249169951,3cyclictest0-21swapper/123:50:061
249169950,1cyclictest25431-21/usr/sbin/munin20:20:131
249119953,1cyclictest663-21runrttasks19:20:050
249119952,2cyclictest7397-21df19:40:140
249119952,2cyclictest6542-21tr20:50:110
249119952,2cyclictest4434-21expr20:45:150
249119952,2cyclictest28647-21sh20:25:210
249119952,2cyclictest26938-21sed20:20:180
249119952,2cyclictest24836-21latency21:15:150
249119952,2cyclictest18406-21chrt20:05:020
249119952,2cyclictest16645-21rm21:30:070
249119952,2cyclictest11442-21sed21:00:150
249119952,2cyclictest10160-21ntp_kernel_pll_19:45:180
249119951,2cyclictest275-21systemd-journal19:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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