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2026-01-12 - 12:40
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Mon Jan 12, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
306622282247,22sleep20-21swapper/219:05:472
309762274244,19sleep00-21swapper/019:09:360
308202273243,19sleep10-21swapper/119:07:361
308852266235,21sleep30-21swapper/319:08:253
236012610,0sleep10-21swapper/100:07:011
197292600,0sleep20-21swapper/223:45:162
319942580,0sleep00-21swapper/021:15:510
78322560,0sleep20-21swapper/221:20:482
35892540,0sleep00-21swapper/023:55:150
234012530,0sleep023402-21latency_hist22:10:000
74202470,0sleep10-21swapper/121:40:171
310072180,0sleep30-21swapper/322:14:413
127752150,0sleep30-21swapper/323:21:193
7292140,0sleep20-21swapper/221:55:372
53712140,0sleep00-21swapper/023:17:000
97702130,0sleep20-21swapper/222:00:582
315212130,1sleep30-21swapper/323:52:313
289902100,0sleep00-21swapper/021:34:200
311249994,3cyclictest275-21systemd-journal22:21:390
6691280,0sleep10-21swapper/122:00:001
311369984,3cyclictest275-21systemd-journal21:14:463
311369983,3cyclictest275-21systemd-journal20:39:263
311339984,3cyclictest504-21dbus-daemon21:20:002
311339983,3cyclictest275-21systemd-journal22:10:002
311339982,3cyclictest28792-21munin-run00:30:012
311289984,3cyclictest658-21snmpd22:37:561
311249984,3cyclictest275-21systemd-journal23:15:020
311249984,3cyclictest275-21systemd-journal23:15:020
311249983,3cyclictest275-21systemd-journal20:59:550
15642280,0sleep10-21swapper/123:04:031
311369973,3cyclictest275-21systemd-journal21:05:463
311369973,3cyclictest275-21systemd-journal20:47:453
311369973,1cyclictest0-21swapper/300:04:313
311369970,6cyclictest8310-21ntpq22:00:193
311339975,2cyclictest0-21swapper/200:20:002
311339973,3cyclictest560-21gdbus00:01:212
311339973,3cyclictest20742-21ntpq00:05:162
311339971,3cyclictest14081-21munin-run21:45:012
311289974,2cyclictest7845-21seq00:17:061
311249974,2cyclictest19955-21sshd21:28:460
311249973,3cyclictest275-21systemd-journal23:40:000
20123270,0sleep20-21swapper/219:55:132
16052270,0sleep30-21swapper/321:25:463
14101270,0sleep10-21swapper/100:01:171
13039270,0sleep00-21swapper/021:44:140
311369966,0cyclictest0-21swapper/323:11:233
311369966,0cyclictest0-21swapper/323:11:233
311369966,0cyclictest0-21swapper/320:26:203
311369966,0cyclictest0-21swapper/319:44:003
311369966,0cyclictest0-21swapper/300:06:353
311369963,2cyclictest504-21dbus-daemon21:30:183
311369963,2cyclictest4073-21ssh23:16:003
311369963,2cyclictest29055-21cut20:15:123
311369963,2cyclictest28990-21ssh22:52:043
311369963,2cyclictest275-21systemd-journal20:10:463
311369963,2cyclictest26943-21sed23:30:143
311369963,2cyclictest26733-21ssh00:28:253
311369963,2cyclictest26387-21ssh21:51:463
311369963,2cyclictest20823-21diskmemload23:05:473
311369963,2cyclictest19584-21ssh21:47:533
311369963,2cyclictest18488-21seq23:45:033
311369963,1cyclictest0-21swapper/322:15:473
311369963,1cyclictest0-21swapper/321:15:383
311369962,3cyclictest9770-21sed23:00:143
311369962,3cyclictest8175-21expr22:20:123
311369962,3cyclictest7324-21ntpq21:40:173
311369962,3cyclictest658-21snmpd23:40:303
311369962,3cyclictest658-21snmpd23:29:203
311369962,3cyclictest658-21snmpd22:41:403
311369962,3cyclictest658-21snmpd21:36:283
311369962,3cyclictest658-21snmpd20:20:023
311369962,3cyclictest658-21snmpd20:05:033
311369962,3cyclictest658-21snmpd19:30:013
311369962,3cyclictest658-21snmpd00:36:403
311369962,3cyclictest658-21snmpd00:11:333
311369962,3cyclictest504-21dbus-daemon20:55:003
311369962,3cyclictest4838-21ntpq00:15:153
311369962,3cyclictest27559-21anacron22:31:283
311369962,3cyclictest0-21swapper/322:45:383
311369962,3cyclictest0-21swapper/321:22:363
311369962,3cyclictest0-21swapper/300:21:023
311369962,1cyclictest0-21swapper/322:28:113
311369962,1cyclictest0-21swapper/300:30:523
311369961,3cyclictest275-21systemd-journal21:02:483
311369960,6cyclictest0-21swapper/323:35:043
311369960,6cyclictest0-21swapper/322:55:173
311369960,4cyclictest201292cpuspeed_turbos19:55:123
311369960,2cyclictest32661-21/usr/sbin/munin22:35:183
311369960,2cyclictest15656-21cat22:05:133
311369960,0cyclictest0-21swapper/323:56:163
311369960,0cyclictest0-21swapper/321:58:093
311339966,0cyclictest0-21swapper/221:25:352
311339963,2cyclictest658-21snmpd23:16:112
311339963,2cyclictest504-21dbus-daemon22:50:572
311339963,2cyclictest504-21dbus-daemon00:13:092
311339963,2cyclictest32400-21cat22:15:142
311339963,2cyclictest29424-21ssh23:11:552
311339963,2cyclictest29424-21ssh23:11:552
311339963,2cyclictest275-21systemd-journal20:28:352
311339963,2cyclictest23030-21sh23:08:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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