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2026-08-22 - 07:47
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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 376 highest latencies:
System rackaslot8.osadl.org (updated Sat Aug 22, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268642279249,20sleep20-21swapper/219:06:032
269822277245,21sleep10-21swapper/119:07:351
271572269238,20sleep00-21swapper/019:09:510
270772264232,22sleep30-21swapper/319:08:503
87142670,0sleep20-21swapper/222:41:472
85772600,0sleep122-21ksoftirqd/100:37:251
7852600,0sleep10-21swapper/121:58:371
278242590,0sleep10-21swapper/100:10:151
233322540,0sleep20-21swapper/222:30:532
189282490,0sleep10-21swapper/123:26:181
56742330,0sleep30-21swapper/321:22:143
200852180,0sleep00-21swapper/022:29:470
183502180,0sleep20-21swapper/200:24:172
107202180,0sleep20-21swapper/200:39:032
89782170,0sleep00-21swapper/000:18:300
185992160,0sleep10-21swapper/121:30:171
6252150,0sleep30-21swapper/300:13:293
280632150,0sleep00-21swapper/022:15:020
2727499110,3cyclictest14786-21sh21:27:512
2727499110,2cyclictest3266-21cpuspeed_turbos00:15:112
2727499110,2cyclictest2985-21ssh23:16:512
2727499110,2cyclictest19485-21sh00:05:152
2727499110,2cyclictest18134-21/usr/sbin/munin21:30:242
2727499110,1cyclictest12079-21hddtemp_smartct22:05:152
2727499102,6cyclictest275-21systemd-journal22:46:202
2727499102,1cyclictest0-21swapper/221:56:142
2727499101,8cyclictest0-21swapper/222:10:152
2727499101,1cyclictest275-21systemd-journal20:45:012
2727499100,3cyclictest275-21systemd-journal21:45:012
2727499100,3cyclictest1824-21chrt19:21:222
2727499100,3cyclictest11576-21ssh23:02:442
2727499100,2cyclictest979-21ssh22:17:552
2727499100,2cyclictest5896-21munin-run23:00:002
2727499100,2cyclictest275-21systemd-journal19:55:012
2727499100,1cyclictest20715-21ssh23:08:232
2727499100,1cyclictest15019-21ssh00:02:352
135952100,0sleep10-21swapper/100:01:301
272749993,5cyclictest25461-21sh23:10:392
272749992,3cyclictest30727-21snmpd21:04:582
272749992,1cyclictest0-21swapper/221:36:592
272749991,2cyclictest26162-21switchtime20:15:202
272749990,3cyclictest8812-21cut20:50:162
272749990,3cyclictest3149-21sed23:55:192
272749990,3cyclictest275-21systemd-journal22:30:012
272749990,3cyclictest275-21systemd-journal00:33:282
272749990,3cyclictest25577-21ssh21:15:122
272749990,3cyclictest25071-21awk21:15:002
272749990,3cyclictest24711-21grep23:30:142
272749990,3cyclictest15221-21cut21:05:122
272749990,2cyclictest8786-21cron19:40:012
272749990,2cyclictest76-21kswapd022:35:122
272749990,2cyclictest4357-21cron19:30:022
272749990,2cyclictest27877-21df19:10:132
272749990,2cyclictest275-21systemd-journal22:25:012
272749990,2cyclictest275-21systemd-journal22:25:012
272749990,2cyclictest15453-21cron23:25:002
272749990,1cyclictest9290-21df23:40:112
272749990,1cyclictest275-21systemd-journal20:20:492
272749990,1cyclictest275-21systemd-journal20:20:492
272749990,1cyclictest17016-21timerandwakeup19:55:192
272749990,1cyclictest0-21swapper/222:00:172
272669993,2cyclictest275-21systemd-journal21:20:000
272799984,3cyclictest560-21gdbus23:40:013
272799980,7cyclictest19563-21sed21:30:233
272749982,2cyclictest6542-21cat20:45:132
272749982,1cyclictest20223-21cat20:05:012
272749982,1cyclictest1447-21acpi21:20:112
272749982,1cyclictest0-21swapper/221:50:132
272749980,3cyclictest30256-21date20:25:152
272749980,3cyclictest27667-21sh23:50:342
272749980,3cyclictest19270-21sed20:00:192
272749980,3cyclictest1832-21grep20:35:112
272749980,3cyclictest16188-21expr23:25:112
272749980,3cyclictest10847-21cat21:45:122
272749980,2cyclictest9537-21grep19:40:132
272749980,2cyclictest30038-21munin-node19:15:012
272749980,2cyclictest27349-21cpuspeed_turbos00:10:122
272749980,2cyclictest22838-21tr20:10:112
272749980,2cyclictest22076-21awk22:50:122
272749980,2cyclictest20831-21rm00:25:162
272749980,2cyclictest1907-21grep23:35:202
272749980,2cyclictest17259-21apt-get23:45:112
272749980,2cyclictest11491-21cstates19:45:122
272749980,2cyclictest10776-21fschecks_time20:55:132
272749980,1cyclictest31621-21apt-get20:30:122
272669987,1cyclictest12-21ksoftirqd/022:45:010
9858270,0sleep30-21swapper/300:38:233
32370270,0sleep10-21swapper/123:54:091
272799975,1cyclictest20210-21ssh22:48:573
272799973,3cyclictest275-21systemd-journal19:15:013
272799973,3cyclictest21937-21unixbench-2d20:05:213
272799973,3cyclictest16752-21diskmemload22:16:163
272799973,3cyclictest1158-21cron20:35:013
272799973,3cyclictest10561-21apt-get21:45:133
272799972,3cyclictest275-21systemd-journal20:02:563
272749970,2cyclictest4597-21awk19:30:122
272709975,1cyclictest0-21swapper/100:10:011
272709974,2cyclictest275-21systemd-journal23:20:011
272709973,3cyclictest504-21dbus-daemon23:40:011
272709973,3cyclictest30727-21snmpd22:50:171
272709973,1cyclictest19311-21apt00:25:001
272709972,4cyclictest0-21swapper/123:30:121
272709972,3cyclictest22844-21perf23:10:001
272709972,3cyclictest20397-21cron22:30:011
272709971,4cyclictest12979-21idleruntime-cro22:45:011
272669976,1cyclictest12-21ksoftirqd/021:40:000
272669974,2cyclictest30727-21snmpd22:23:340
272669974,2cyclictest30727-21snmpd22:23:340
272669973,3cyclictest9048-21ntpq20:50:170
272669973,3cyclictest504-21dbus-daemon22:55:000
272669973,3cyclictest30727-21snmpd19:31:110
272669973,2cyclictest275-21systemd-journal22:06:100
272669973,2cyclictest275-21systemd-journal20:39:470
24732270,0sleep00-21swapper/020:15:010
18844270,0sleep00-21swapper/023:06:550
11929270,0sleep00-21swapper/023:41:190
272799966,0cyclictest0-21swapper/323:12:033
272799966,0cyclictest0-21swapper/322:06:223
272799963,2cyclictest5974-21ssh23:19:083
272799963,2cyclictest30727-21snmpd23:31:033
272799963,2cyclictest30727-21snmpd23:26:333
272799963,2cyclictest28955-21ssh21:16:363
272799963,2cyclictest20645-21rm22:30:023
272799963,2cyclictest19723-21latency21:50:163
272799963,2cyclictest18492-21ssh00:24:243
272799963,2cyclictest10651-21ssh23:21:193
272799963,1cyclictest0-21swapper/300:05:093
272799962,3cyclictest4337-21sort22:20:133
272799962,3cyclictest4337-21sort22:20:133
272799962,3cyclictest30727-21snmpd23:50:063
272799962,3cyclictest30727-21snmpd23:46:003
272799962,3cyclictest30727-21snmpd23:05:263
272799962,3cyclictest30727-21snmpd22:57:233
272799962,3cyclictest30727-21snmpd22:38:083
272799962,3cyclictest30727-21snmpd22:02:583
272799962,3cyclictest30727-21snmpd21:35:353
272799962,3cyclictest30727-21snmpd21:01:313
272799962,3cyclictest30727-21snmpd20:29:453
272799962,3cyclictest30727-21snmpd19:54:543
272799962,3cyclictest30727-21snmpd00:31:373
272799962,3cyclictest30727-21snmpd00:16:343
272799962,3cyclictest23323-21sendmail_mailqu22:50:183
272799962,3cyclictest14205-21awk22:25:203
272799962,3cyclictest11673-21sensors_temp00:00:193
272799962,3cyclictest11248-21ntpq20:55:163
272799962,3cyclictest10005-21cat21:25:113
272799962,1cyclictest0-21swapper/322:41:323
272799961,4cyclictest8658-21ssh23:40:013
272799961,4cyclictest2114-21perl23:55:133
272799961,4cyclictest17867-21hddtemp_smartct21:10:133
272799961,3cyclictest275-21systemd-journal00:28:153
272799960,6cyclictest0-21swapper/319:35:173
272799960,5cyclictest3886-21expr20:40:133
272799960,4cyclictest275-21systemd-journal20:23:323
272799960,4cyclictest275-21systemd-journal20:23:323
272799960,4cyclictest19810-21ssh22:10:033
272799960,3cyclictest4706-21ssh21:40:543
272799960,0cyclictest0-21swapper/323:01:133
272799960,0cyclictest0-21swapper/320:10:173
272709966,0cyclictest0-21swapper/122:47:041
272709966,0cyclictest0-21swapper/121:54:231
272709963,3cyclictest501-21in:imuxsock21:41:051
272709963,2cyclictest8716-11brltty23:35:081
272709963,2cyclictest504-21dbus-daemon20:50:191
272709963,2cyclictest504-21dbus-daemon20:38:571
272709963,2cyclictest4670-21cat22:00:201
272709963,2cyclictest28313-21rm21:35:301
272709963,2cyclictest21256-21sh22:30:121
272709963,1cyclictest0-21swapper/122:22:281
272709963,1cyclictest0-21swapper/122:22:281
272709962,3cyclictest7786-21ntpq19:35:161
272709962,3cyclictest30727-21snmpd23:55:241
272709962,3cyclictest30727-21snmpd23:20:151
272709962,3cyclictest30727-21snmpd23:02:381
272709962,3cyclictest30727-21snmpd21:45:091
272709962,3cyclictest30727-21snmpd21:24:451
272709962,3cyclictest30727-21snmpd21:11:011
272709962,3cyclictest30727-21snmpd21:04:401
272709962,3cyclictest30727-21snmpd20:24:061
272709962,3cyclictest30727-21snmpd20:24:061
272709962,3cyclictest30727-21snmpd20:15:181
272709962,3cyclictest30727-21snmpd20:08:361
272709962,3cyclictest30727-21snmpd19:58:061
272709962,3cyclictest30727-21snmpd19:50:291
272709962,3cyclictest30727-21snmpd19:41:471
272709962,3cyclictest30727-21snmpd19:15:311
272709962,3cyclictest30727-21snmpd00:28:221
272709962,3cyclictest275-21systemd-journal22:20:021
272709962,3cyclictest275-21systemd-journal21:15:571
272709962,3cyclictest19385-21latency_hist22:10:011
272709962,1cyclictest0-21swapper/100:30:191
272709961,3cyclictest24682-21dump-pmu-power20:15:011
272709960,6cyclictest0-21swapper/120:25:141
272709960,5cyclictest23519-21expr23:10:131
272709960,5cyclictest16758-21munin-run21:10:001
272669966,0cyclictest0-21swapper/023:25:180
272669963,2cyclictest9725-21cat19:40:140
272669963,2cyclictest504-21dbus-daemon23:22:130
272669963,2cyclictest4910-21expr00:35:150
272669963,2cyclictest4220-21ssh21:21:060
272669963,2cyclictest417-21expr23:35:120
272669963,2cyclictest30727-21snmpd23:15:260
272669963,2cyclictest30727-21snmpd21:47:420
272669963,2cyclictest30727-21snmpd20:49:190
272669963,2cyclictest28336-21tr21:55:170
272669963,2cyclictest27135-21sshd23:11:560
272669963,2cyclictest25930-21rm22:13:330
272669963,2cyclictest24650-21ssh22:31:530
272669963,2cyclictest20698-21sshd23:46:370
272669963,2cyclictest19958-21sh21:50:180
272669963,2cyclictest18017-21sh22:47:160
272669963,2cyclictest11804-21ssh21:25:350
272669963,1cyclictest0-21swapper/022:03:440
272669962,3cyclictest30727-21snmpd23:31:240
272669962,3cyclictest30727-21snmpd21:40:410
272669962,3cyclictest30727-21snmpd21:33:050
272669962,3cyclictest30727-21snmpd21:07:370
272669962,3cyclictest30727-21snmpd20:41:490
272669962,3cyclictest30727-21snmpd20:33:510
272669962,3cyclictest30727-21snmpd20:06:180
272669962,3cyclictest30727-21snmpd19:35:080
272669962,3cyclictest30727-21snmpd19:27:440
272669962,3cyclictest30727-21snmpd19:24:320
272669962,3cyclictest30727-21snmpd19:11:220
272669962,3cyclictest30727-21snmpd00:27:190
272669962,3cyclictest30727-21snmpd00:12:310
272669962,3cyclictest30727-21snmpd00:06:310
272669962,3cyclictest30727-21snmpd00:01:510
272669962,3cyclictest275-21systemd-journal19:52:360
272669962,3cyclictest275-21systemd-journal19:50:010
272669962,3cyclictest17965-21cat21:10:140
272669962,3cyclictest12590-21cut00:20:170
272669962,1cyclictest0-21swapper/023:59:410
272669962,1cyclictest0-21swapper/022:55:410
272669960,6cyclictest0-21swapper/023:04:510
272669960,6cyclictest0-21swapper/022:38:450
272669960,2cyclictest116572timerandwakeup20:55:190
272799953,1cyclictest15149-21cat21:05:113
272799952,2cyclictest9922-21cat19:40:153
272799952,2cyclictest80782sleep320:50:123
272799952,2cyclictest31011-21cat19:15:163
272799952,2cyclictest30727-21snmpd19:55:033
272799952,2cyclictest2094-21cat20:35:123
272799952,2cyclictest11402-21grep19:45:123
272799952,1cyclictest0-21swapper/321:55:083
272799951,3cyclictest4906-21cat19:30:133
272799951,3cyclictest30727-21snmpd20:45:103
272799951,3cyclictest30727-21snmpd19:20:113
272799951,3cyclictest3052-21cat19:25:123
272799950,3cyclictest275-21systemd-journal20:18:063
272709953,1cyclictest2929-21gltestperf19:25:111
272709953,1cyclictest10702-21df20:55:121
272709952,2cyclictest888-21chrt20:31:431
272709952,2cyclictest6337-21sort20:45:121
272709952,2cyclictest32707-21cpuspeed_turbos19:20:111
272709952,2cyclictest30727-21snmpd23:45:031
272709952,2cyclictest30727-21snmpd21:25:021
272709952,2cyclictest30727-21snmpd19:45:141
272709952,2cyclictest2885-21ssh00:15:021
272709952,2cyclictest28286-21cut19:10:161
272709952,2cyclictest275-21systemd-journal19:30:461
272709952,2cyclictest19576-21gpgconf22:10:021
272709952,2cyclictest18832-21cut20:00:161
272709951,3cyclictest4351-21irqstats20:40:161
272709951,3cyclictest30349-21/usr/sbin/munin22:55:161
272709950,4cyclictest29261-21cpuspeed22:35:121
272669952,2cyclictest30727-21snmpd21:00:010
272669952,2cyclictest30727-21snmpd20:15:120
272669952,2cyclictest29452-21cat20:25:110
272669952,2cyclictest28347-21cat00:30:120
272669952,2cyclictest27825-21if_enp4s020:20:150
272669952,2cyclictest27825-21if_enp4s020:20:150
272669952,2cyclictest26610-21netstat23:50:160
272669952,2cyclictest16038-21cat19:55:120
272669951,3cyclictest29981-21cat19:15:010
272669951,3cyclictest18160-21cat20:00:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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