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2026-09-05 - 08:11
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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 Sat Sep 05, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
153642326295,21sleep10-21swapper/119:05:581
156352288262,17sleep20-21swapper/219:09:112
155242261232,19sleep00-21swapper/019:07:460
153412259205,17sleep30-21swapper/319:05:393
137222570,0sleep30-21swapper/322:32:143
91092530,1sleep29108-21users00:25:202
196512530,0sleep20-21swapper/221:37:222
152052380,0sleep20-21swapper/221:54:332
40022200,0sleep10-21swapper/121:28:081
29132180,0sleep30-21swapper/300:21:573
233362160,0sleep20-21swapper/222:38:122
108342160,0sleep30-21swapper/323:28:353
26742150,0sleep30-21swapper/321:27:063
141602140,0sleep00-21swapper/023:50:110
250752130,0sleep20-21swapper/223:17:252
310942120,0sleep00-21swapper/023:40:180
164922100,1sleep30-21swapper/323:31:323
4264290,0chrt0-21swapper/321:05:163
158129996,2cyclictest12410-21sh00:08:273
158009993,3cyclictest1804-21munin-run19:50:010
158129986,1cyclictest11154-21ssh22:10:503
158129983,3cyclictest275-21systemd-journal21:05:003
158099984,3cyclictest275-21systemd-journal20:22:332
158009983,2cyclictest19822-21dump-pmu-power23:15:010
158009980,7cyclictest23055-21cron21:40:000
31729270,0sleep00-21swapper/022:23:540
25788270,0sleep10-21swapper/122:40:001
16806270,0sleep30-21swapper/320:20:193
158129973,3cyclictest275-21systemd-journal21:40:003
158129973,3cyclictest15636-21cat00:10:143
158129970,7cyclictest17615-21ssh21:35:493
158099974,2cyclictest491-21systemd-logind20:41:512
158099973,3cyclictest275-21systemd-journal23:55:012
158099973,3cyclictest275-21systemd-journal00:08:252
158099973,3cyclictest15221-21snmpd00:34:532
158099972,3cyclictest275-21systemd-journal21:10:002
158099970,4cyclictest22235-21ls21:20:002
158059976,1cyclictest2129-21ssh23:42:341
158059974,2cyclictest18750irq/134-ahci[0023:00:001
158059974,2cyclictest15221-21snmpd00:23:531
158059973,3cyclictest275-21systemd-journal19:52:591
158059973,3cyclictest15221-21snmpd22:26:561
158059973,3cyclictest15221-21snmpd22:08:321
158059971,3cyclictest11158-21munin-run23:10:001
158009974,2cyclictest30528-21sshd22:03:340
158009974,2cyclictest275-21systemd-journal00:05:010
158009974,2cyclictest275-21systemd-journal00:05:010
158009973,3cyclictest275-21systemd-journal19:45:010
158009973,3cyclictest275-21systemd-journal19:30:010
158009973,2cyclictest275-21systemd-journal20:06:160
158009973,2cyclictest275-21systemd-journal20:06:160
158129966,0cyclictest0-21swapper/322:07:143
158129966,0cyclictest0-21swapper/300:27:433
158129963,2cyclictest704-21sshd20:58:333
158129963,2cyclictest5980-21cstates23:45:123
158129963,2cyclictest504-21dbus-daemon22:44:113
158129963,2cyclictest30970-21ssh23:20:333
158129963,2cyclictest30871-21cat19:40:163
158129963,2cyclictest275-21systemd-journal22:03:203
158129963,2cyclictest275-21systemd-journal19:55:093
158129963,2cyclictest275-21systemd-journal00:19:443
158129963,2cyclictest24429-21ssh21:20:193
158129963,2cyclictest18428-21ssh23:52:183
158129963,2cyclictest18182-21ssh00:30:573
158129963,2cyclictest17084-21sh21:16:053
158129963,2cyclictest1573-21chrt23:04:043
158129963,2cyclictest15221-21snmpd21:46:363
158129963,2cyclictest12806-21ssh22:50:403
158129963,1cyclictest0-21swapper/322:20:183
158129962,3cyclictest275-21systemd-journal23:58:033
158129962,3cyclictest17712-21which22:15:143
158129962,3cyclictest15221-21snmpd23:16:093
158129962,3cyclictest15221-21snmpd22:45:543
158129962,3cyclictest15221-21snmpd21:56:493
158129962,3cyclictest15221-21snmpd20:42:273
158129962,3cyclictest15221-21snmpd20:38:283
158129962,3cyclictest15221-21snmpd20:17:033
158129962,3cyclictest15221-21snmpd20:11:333
158129962,3cyclictest15221-21snmpd19:52:353
158129962,3cyclictest15221-21snmpd19:21:173
158129962,3cyclictest15221-21snmpd19:18:113
158129962,3cyclictest15221-21snmpd00:00:263
158129962,3cyclictest15221-21snmpd00:00:263
158129962,3cyclictest13434-21cat23:10:193
158129962,3cyclictest0-21swapper/322:36:153
158129961,2cyclictest30390-1kworker/u9:223:35:113
158129960,6cyclictest0-21swapper/323:42:583
158129960,6cyclictest0-21swapper/323:05:553
158129960,6cyclictest0-21swapper/319:25:193
158129960,6cyclictest0-21swapper/300:36:233
158129960,5cyclictest275-21systemd-journal20:35:003
158129960,5cyclictest1369-21expr22:25:123
158129960,2cyclictest9334-21hddtemp_smartct20:05:143
158129960,2cyclictest9334-21hddtemp_smartct20:05:143
158129960,2cyclictest7959-21/usr/sbin/munin21:50:183
158129960,2cyclictest7317-21df21:30:123
158129960,0cyclictest0-21swapper/321:11:033
158099963,3cyclictest28-21ksoftirqd/220:45:012
158099963,2cyclictest9830-21sh22:10:162
158099963,2cyclictest4803-21rm23:25:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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