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2026-04-13 - 10:05
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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 Apr 13, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276742310287,15sleep10-21swapper/119:07:541
275422303276,17sleep20-21swapper/219:06:262
277162278248,19sleep00-21swapper/019:08:250
277702273242,21sleep30-21swapper/319:09:083
191452630,0sleep10-21swapper/123:27:441
183402600,0sleep00-21swapper/023:27:070
258502550,0sleep30-21swapper/322:13:273
199672520,0sleep20-21swapper/222:10:022
302042210,0sleep20-21swapper/222:15:262
163412180,0sleep30-21swapper/323:45:203
162222160,0sleep10-21swapper/121:47:421
44212140,0sleep20-21swapper/223:19:042
324492130,0sleep30-21swapper/321:18:363
312232130,0sleep00-21swapper/021:36:590
244402130,0sleep00-21swapper/000:30:180
207732120,0sleep10-21swapper/123:09:181
272382110,0sleep10-21swapper/122:53:371
2795899104,3cyclictest547-21munin-run19:20:012
215222100,2sleep3341ksoftirqd/322:50:143
11032290,1sleep30-21swapper/319:40:193
279629987,1cyclictest34-21ksoftirqd/300:00:013
279529983,3cyclictest275-21systemd-journal23:50:000
279629975,1cyclictest7694-21ssh22:21:433
279629973,3cyclictest658-21snmpd00:39:003
279629973,3cyclictest275-21systemd-journal23:17:133
279629973,3cyclictest0-21swapper/323:00:123
279629973,2cyclictest275-21systemd-journal00:15:063
279589975,2cyclictest483-21avahi-daemon21:55:012
279589973,3cyclictest658-21snmpd21:11:242
279589973,3cyclictest275-21systemd-journal23:57:262
279589973,3cyclictest21541-21diskstats20:05:132
279549973,3cyclictest658-21snmpd20:01:591
279549973,3cyclictest504-21dbus-daemon22:40:001
279549973,3cyclictest504-21dbus-daemon22:30:011
279549973,3cyclictest504-21dbus-daemon20:30:201
279549973,3cyclictest275-21systemd-journal22:50:001
279549972,3cyclictest12044-21grep22:25:011
279529973,3cyclictest658-21snmpd22:18:150
279529973,3cyclictest275-21systemd-journal00:18:300
279529973,3cyclictest16971-21users00:25:210
23052270,0sleep1211rcuc/121:51:381
4871260,0sleep00-21swapper/020:40:130
279629966,0cyclictest0-21swapper/323:40:443
279629966,0cyclictest0-21swapper/322:40:283
279629963,2cyclictest8908-21sh22:03:003
279629963,2cyclictest658-21snmpd22:05:033
279629963,2cyclictest658-21snmpd20:04:593
279629963,2cyclictest4125-21ssh22:59:273
279629963,2cyclictest31018-21ssh22:16:043
279629963,2cyclictest30052-11brltty21:13:593
279629963,2cyclictest26096-21/usr/sbin/munin20:15:143
279629963,2cyclictest26096-21/usr/sbin/munin20:15:143
279629963,2cyclictest2412-21expr20:35:133
279629963,2cyclictest16907-21ssh23:06:173
279629963,2cyclictest15692-21/usr/sbin/munin00:05:153
279629963,2cyclictest11041-21ssh23:22:493
279629963,2cyclictest10048-21sshd00:21:183
279629963,1cyclictest0-21swapper/322:32:253
279629963,1cyclictest0-21swapper/321:41:343
279629962,3cyclictest658-21snmpd23:36:293
279629962,3cyclictest658-21snmpd21:50:083
279629962,3cyclictest658-21snmpd21:33:223
279629962,3cyclictest658-21snmpd20:40:453
279629962,3cyclictest658-21snmpd19:31:283
279629962,3cyclictest658-21snmpd19:27:013
279629962,3cyclictest658-21snmpd19:17:373
279629962,3cyclictest658-21snmpd00:34:483
279629962,3cyclictest658-21snmpd00:11:333
279629962,3cyclictest658-21snmpd00:00:153
279629962,3cyclictest560-21gdbus20:10:013
279629962,3cyclictest28029-21grep21:35:153
279629962,3cyclictest275-21systemd-journal21:25:003
279629962,3cyclictest12549-21grep20:55:203
279629962,3cyclictest12205-21cat21:45:153
279629962,1cyclictest0-21swapper/323:26:483
279629962,1cyclictest0-21swapper/322:36:063
279629961,4cyclictest658-21snmpd19:50:133
279629960,6cyclictest0-21swapper/321:57:253
279629960,6cyclictest0-21swapper/319:10:053
279629960,5cyclictest32289-21apt-get20:30:133
279629960,5cyclictest22834-21cstates23:30:133
279629960,2cyclictest15230-21/usr/sbin/munin00:25:163
279629960,2cyclictest13360-21memory22:25:163
279629960,0cyclictest0-21swapper/323:53:583
279629960,0cyclictest0-21swapper/322:48:103
279589966,0cyclictest0-21swapper/200:30:142
279589963,2cyclictest8218-21ssh22:02:292
279589963,2cyclictest658-21snmpd23:40:592
279589963,2cyclictest658-21snmpd22:25:482
279589963,2cyclictest501-21in:imuxsock22:56:102
279589963,2cyclictest30989-21awk20:25:162
279589963,2cyclictest28999-21ssh21:15:562
279589963,2cyclictest23483-21sh22:31:102
279589963,2cyclictest22462-21ssh00:09:482
279589963,2cyclictest19749-21sh00:27:332
279589963,1cyclictest0-21swapper/223:45:442
279589962,3cyclictest9477-21cat20:50:172
279589962,3cyclictest658-21snmpd22:51:192
279589962,3cyclictest658-21snmpd22:11:452
279589962,3cyclictest658-21snmpd21:48:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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