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2026-04-07 - 06:25
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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 Tue Apr 07, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267172282253,19sleep20-21swapper/219:08:042
265922274247,18sleep10-21swapper/119:06:421
268402266236,19sleep00-21swapper/019:09:390
268332260229,20sleep30-21swapper/319:09:343
275842930,0sleep30-21swapper/321:54:583
87422620,0sleep10-21swapper/121:43:061
193542600,0sleep00-21swapper/021:49:590
92142570,0sleep20-21swapper/221:24:172
237252570,0sleep30-21swapper/300:09:203
86352560,1sleep28620-21perf00:20:002
150452550,0sleep00-21swapper/022:06:080
259982540,0sleep00-21swapper/023:50:190
321392530,1sleep00-21swapper/000:14:300
177412530,0sleep00-21swapper/022:27:390
295752510,0sleep10-21swapper/100:32:081
208452190,0sleep20-21swapper/223:08:452
306982160,0sleep30-21swapper/321:17:133
229102160,0sleep20-21swapper/200:28:212
298112150,0sleep20-21swapper/221:35:462
167992150,0sleep10-21swapper/100:05:101
2702199142,7cyclictest11628-21rm23:02:593
218162140,0sleep00-21swapper/021:50:350
2702199132,7cyclictest0-21swapper/323:58:333
2702199121,8cyclictest0-21swapper/323:08:533
2702199112,5cyclictest23486-21sh00:28:483
2702199111,2cyclictest24508-21sed20:10:193
2702199111,1cyclictest24436-21apt-get23:50:113
2702199110,3cyclictest30344-21ssh23:14:433
2702199110,3cyclictest21358-21ssh21:11:393
2702199110,2cyclictest1573-21ssh23:15:553
2702199110,2cyclictest1573-21ssh23:15:553
2702199110,0cyclictest0-21swapper/300:22:313
2702199103,6cyclictest24857-21ssh22:51:153
2702199102,7cyclictest3300-21rm22:38:433
2702199102,4cyclictest4347-21sh21:20:303
2702199101,1cyclictest27297-21ssh21:35:023
2702199100,9cyclictest21943-21hddtemp_smartct22:30:153
2702199100,3cyclictest275-21systemd-journal21:10:013
2702199100,3cyclictest275-21systemd-journal20:18:173
2702199100,3cyclictest14933-21ssh22:06:033
2702199100,2cyclictest30557-21ssh00:13:153
2702199100,2cyclictest275-21systemd-journal20:10:003
2702199100,2cyclictest19004-21ssh23:46:093
2702199100,1cyclictest7627-21ssh22:01:483
2702199100,1cyclictest28454-21ssh00:31:153
2702199100,1cyclictest25235-21smart_sda23:30:193
2702199100,1cyclictest21141-21perl22:10:163
2702199100,1cyclictest0-21swapper/322:45:123
2702199100,1cyclictest0-21swapper/321:25:153
2702199100,1cyclictest0-21swapper/320:50:153
2702199100,1cyclictest0-21swapper/319:45:193
2702199100,1cyclictest0-21swapper/300:35:003
270219992,6cyclictest658-21snmpd20:44:303
270219992,6cyclictest5163-21ssh21:40:213
270219992,6cyclictest30341-21ssh22:55:023
270219992,6cyclictest29615-21sed21:55:213
270219992,6cyclictest12742-21date22:25:013
270219991,1cyclictest8002-21apt-get23:40:103
270219990,3cyclictest275-21systemd-journal19:39:463
270219990,3cyclictest275-21systemd-journal19:31:563
270219990,3cyclictest275-21systemd-journal19:26:553
270219990,3cyclictest16562-21cat19:55:153
270219990,2cyclictest275-21systemd-journal20:30:133
270219990,2cyclictest15216-21idleruntime-cro21:05:013
270219990,1cyclictest7682-21cstates23:20:113
270219990,1cyclictest4548-21ssh23:37:433
270219990,1cyclictest29771-21apt-get20:25:113
270219990,1cyclictest21577-21ssh21:31:043
270219990,1cyclictest18354-1kworker/u9:100:00:433
270219990,1cyclictest17589-21ssh23:25:313
270219990,1cyclictest12800-21sh22:25:033
270219990,1cyclictest11494-21ssh21:45:043
270219990,1cyclictest11099-21cron19:45:003
270219990,1cyclictest10026-21ssh22:42:313
270219990,1cyclictest0-21swapper/320:20:133
270219990,0cyclictest17436-21diskmemload00:16:353
270219990,0cyclictest0-21swapper/320:55:113
270099993,3cyclictest11849-21grep22:05:010
6857280,0sleep20-21swapper/222:20:402
6440280,0sleep20-21swapper/222:00:542
270219980,3cyclictest354-21expr19:20:133
270219980,2cyclictest29810-21cpu19:15:023
270219980,2cyclictest275-21systemd-journal20:47:023
270219980,2cyclictest17750-21cron20:00:013
270219980,2cyclictest14337-21cat19:50:163
270219980,1cyclictest30363-21timerandwakeup22:15:193
270219980,1cyclictest27457-21apt-get19:10:023
270179986,1cyclictest28-21ksoftirqd/220:50:012
270119980,7cyclictest2436-21ssh21:59:131
3290270,0sleep00-21swapper/023:56:190
270219970,1cyclictest0-21swapper/320:35:113
270179975,1cyclictest23539-21rm22:30:462
270179973,3cyclictest504-21dbus-daemon22:00:012
270179973,3cyclictest28638-21systemctl19:10:172
270179973,3cyclictest275-21systemd-journal22:47:182
270179972,4cyclictest275-21systemd-journal23:37:212
270179972,3cyclictest275-21systemd-journal20:57:042
270119974,2cyclictest8128-21sshd22:02:111
270119974,2cyclictest22-21ksoftirqd/119:50:001
270119972,3cyclictest275-21systemd-journal20:03:571
270119970,3cyclictest8961-21sshd22:22:171
270099975,1cyclictest2634-21ssh00:15:210
270099974,2cyclictest275-21systemd-journal20:10:120
270099973,3cyclictest658-21snmpd19:45:490
270099973,3cyclictest275-21systemd-journal20:53:090
15434270,0sleep00-21swapper/023:44:460
28084260,0sleep20-21swapper/221:15:202
270179966,0cyclictest0-21swapper/223:41:222
270179966,0cyclictest0-21swapper/223:16:352
270179966,0cyclictest0-21swapper/223:16:352
270179963,2cyclictest658-21snmpd19:35:022
270179963,2cyclictest658-21snmpd19:16:002
270179963,2cyclictest504-21dbus-daemon20:40:002
270179963,2cyclictest29022-21ssh00:31:412
270179963,2cyclictest28429-21ssh23:52:052
270179963,2cyclictest275-21systemd-journal21:42:202
270179963,2cyclictest275-21systemd-journal20:30:012
270179963,2cyclictest20518-21if_enp4s021:50:152
270179963,2cyclictest18628-21ssh23:45:512
270179963,2cyclictest13831-21ssh21:45:392
270179963,2cyclictest10785-21sh23:21:402
270179963,1cyclictest0-21swapper/223:03:292
270179962,3cyclictest658-21snmpd22:25:092
270179962,3cyclictest658-21snmpd21:03:042
270179962,3cyclictest658-21snmpd19:34:052
270179962,3cyclictest658-21snmpd00:00:142
270179962,3cyclictest504-21dbus-daemon21:10:002
270179962,3cyclictest3286-21cat19:25:162
270179962,3cyclictest29950-21expr20:25:122
270179962,3cyclictest275-21systemd-journal20:41:292
270179962,3cyclictest24080-21cut20:10:172
270179962,3cyclictest21318-21cat22:10:162
270179962,3cyclictest16846-21which19:55:172
270179962,3cyclictest12754-21sh22:05:152
270179962,1cyclictest0-21swapper/221:12:122
270179960,6cyclictest0-21swapper/222:36:182
270179960,6cyclictest0-21swapper/200:20:352
270179960,5cyclictest18866-21/usr/sbin/munin21:30:152
270119966,0cyclictest0-21swapper/123:28:191
270119966,0cyclictest0-21swapper/100:37:301
270119963,2cyclictest8230-21ssh21:23:311
270119963,2cyclictest5536-21sh23:19:001
270119963,2cyclictest5536-21sh23:19:001
270119963,2cyclictest501-21in:imuxsock19:40:111
270119963,2cyclictest32212-21ssh00:14:321
270119963,2cyclictest31194-21ssh22:55:141
270119963,2cyclictest2844-21sshd23:36:241
270119963,2cyclictest27641-21cron21:55:011
270119963,2cyclictest25929-21basename20:15:141
270119963,2cyclictest25122-21processes23:30:181
270119963,2cyclictest24049-21awk23:10:171
270119963,2cyclictest1598-21ssh21:19:471
270119963,2cyclictest12646-21ssh00:21:451
270119963,2cyclictest12369-21ssh21:25:201
270119963,2cyclictest11659-21ssh21:45:101
270119963,2cyclictest10157-21sh22:42:381
270119963,1cyclictest0-21swapper/123:58:001
270119963,1cyclictest0-21swapper/100:03:531
270119962,3cyclictest6924-21sort23:00:141
270119962,3cyclictest658-21snmpd23:24:011
270119962,3cyclictest658-21snmpd22:27:151
270119962,3cyclictest658-21snmpd22:19:331
270119962,3cyclictest658-21snmpd22:11:481
270119962,3cyclictest658-21snmpd21:38:431
270119962,3cyclictest658-21snmpd21:05:071
270119962,3cyclictest658-21snmpd20:55:331
270119962,3cyclictest658-21snmpd20:41:121
270119962,3cyclictest658-21snmpd20:38:421
270119962,3cyclictest658-21snmpd20:28:211
270119962,3cyclictest658-21snmpd19:21:131
270119960,6cyclictest0-21swapper/123:09:271
270119960,6cyclictest0-21swapper/122:52:441
270119960,6cyclictest0-21swapper/122:49:441
270099966,0cyclictest0-21swapper/021:28:310
270099963,2cyclictest9004-21sshd21:43:180
270099963,2cyclictest5144-21sh22:20:140
270099963,2cyclictest275-21systemd-journal22:15:310
270099963,2cyclictest0-21swapper/021:57:240
270099962,3cyclictest7778-21which23:00:190
270099962,3cyclictest7295-21/usr/sbin/munin23:20:150
270099962,3cyclictest674-21lldpd20:21:530
270099962,3cyclictest658-21snmpd23:32:350
270099962,3cyclictest658-21snmpd23:15:160
270099962,3cyclictest658-21snmpd23:15:150
270099962,3cyclictest658-21snmpd22:48:580
270099962,3cyclictest658-21snmpd21:16:520
270099962,3cyclictest658-21snmpd21:14:190
270099962,3cyclictest658-21snmpd21:07:220
270099962,3cyclictest658-21snmpd20:36:030
270099962,3cyclictest658-21snmpd19:56:290
270099962,3cyclictest658-21snmpd19:41:530
270099962,3cyclictest658-21snmpd19:22:100
270099962,3cyclictest658-21snmpd19:15:010
270099962,3cyclictest658-21snmpd00:30:240
270099962,3cyclictest658-21snmpd00:26:420
270099962,3cyclictest30906-21expr22:55:120
270099962,3cyclictest2960-21grep19:25:140
270099962,3cyclictest275-21systemd-journal21:35:000
270099962,3cyclictest21530-21seq22:30:140
270099962,3cyclictest21295-21cat22:10:160
270099962,3cyclictest12897-21sshd20:59:170
270099962,1cyclictest0-21swapper/023:25:130
270099962,1cyclictest0-21swapper/023:13:290
270099962,1cyclictest0-21swapper/022:36:170
270099962,1cyclictest0-21swapper/000:37:190
270099960,6cyclictest26157-21ssh22:52:150
270099960,6cyclictest0-21swapper/000:02:290
270099960,0cyclictest0-21swapper/021:24:040
17072260,0sleep00-21swapper/023:45:150
270179953,1cyclictest12570-21ssh21:25:292
270179953,1cyclictest0-21swapper/222:50:142
270179953,1cyclictest0-21swapper/222:40:132
270179952,2cyclictest9801-21cat19:40:142
270179952,2cyclictest658-21snmpd23:10:042
270179952,2cyclictest25591-21expr20:15:122
270179952,2cyclictest24076-21tr23:30:132
270179952,2cyclictest21062-21cat20:05:132
270179952,2cyclictest18290-21gdbus20:00:012
270179952,2cyclictest17089-21cat00:05:122
270179952,2cyclictest1462-21cat19:20:192
270179952,2cyclictest1377-21gdbus00:35:002
270179952,2cyclictest12024-21if_err_enp4s019:45:142
270179952,2cyclictest1045-21/usr/sbin/munin23:55:152
270179952,2cyclictest0-21swapper/200:10:062
270179951,3cyclictest9071-21expr20:50:122
270179951,3cyclictest28120-21tail20:20:152
270179951,3cyclictest15692-21cat23:25:132
270179951,3cyclictest13681-21cat19:50:132
270179951,3cyclictest0-21swapper/222:55:012
270179950,4cyclictest29014-21cut22:15:122
270119953,2cyclictest12442-21cpuspeed22:05:141
270119953,1cyclictest5345-21irqstats19:30:151
270119953,1cyclictest20237-21swap21:30:181
270119952,2cyclictest952-21timerwakeupswit20:30:181
270119952,2cyclictest8737-21sh23:40:141
270119952,2cyclictest658-21snmpd23:45:051
270119952,2cyclictest658-21snmpd20:45:511
270119952,2cyclictest658-21snmpd20:10:181
270119952,2cyclictest30463-21memory22:35:151
270119952,2cyclictest29895-21grep19:15:021
270119952,2cyclictest27658-21tr19:10:121
270119952,2cyclictest24843-21df_inode23:50:131
270119952,2cyclictest22337-21ntp_states22:30:181
270119952,2cyclictest18408-21grep21:10:131
270119952,2cyclictest17721-21df_inode00:25:121
270119952,2cyclictest16101-21cat19:55:111
270119952,2cyclictest14061-21fschecks_time19:50:141
270119952,2cyclictest13758-21gltestperf21:00:151
270119952,2cyclictest0-21swapper/120:23:241
270119951,3cyclictest841-21/usr/sbin/munin00:15:121
270119951,3cyclictest3038-21cat19:25:151
270119950,4cyclictest8207-21apt-get20:50:021
270119950,3cyclictest275-21systemd-journal19:35:131
270099953,1cyclictest32156-21apt-get23:35:120
270099952,2cyclictest7562-21cat19:35:150
270099952,2cyclictest6458-21cat20:45:130
270099952,2cyclictest4620-21chrt19:30:040
270099952,2cyclictest32126-21expr20:30:110
270099952,2cyclictest30014-21cstates19:15:020
270099952,2cyclictest25561-21expr20:15:120
270099952,2cyclictest19032-21irqstats20:00:150
270099952,2cyclictest14513-21sh23:05:030
270099952,2cyclictest14331-21sed19:50:160
270099952,2cyclictest13921-21cat21:00:160
270099952,2cyclictest1-21systemd20:28:330
270099952,1cyclictest0-21swapper/000:22:030
270099951,3cyclictest7317-21ssh22:40:260
270099951,3cyclictest658-21snmpd00:05:020
270099951,3cyclictest21814-21cat20:05:170
270099951,3cyclictest20323-21/usr/sbin/munin21:30:180
270099950,3cyclictest275-21systemd-journal20:42:170
270119940,3cyclictest20632-21apt-config20:05:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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