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2026-04-08 - 08:21
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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 rack5slot2.osadl.org (updated Wed Apr 08, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271032203189,10sleep10-21swapper/119:09:161
271222194175,14sleep00-21swapper/019:09:310
268202185168,12sleep30-21swapper/319:05:373
27057210286,12sleep20-21swapper/219:08:412
19062790,0sleep261-21kswapd023:53:242
116952470,0sleep00-21swapper/022:06:540
15112460,0sleep10-21swapper/121:45:571
75422440,0sleep20-21swapper/219:30:222
287542430,0sleep10-21swapper/123:03:001
2733399102,4cyclictest20295-21perf21:05:000
29429280,0sleep00-21swapper/022:15:180
273469960,5cyclictest0-21swapper/300:00:123
273339960,3cyclictest22798-21munin-run20:05:000
273339960,3cyclictest14669-21cron00:00:000
273469955,0cyclictest29907-21kworker/3:123:46:153
273469955,0cyclictest29907-21kworker/3:123:23:503
273469955,0cyclictest29907-21kworker/3:123:01:273
273469955,0cyclictest29907-21kworker/3:122:16:413
273469955,0cyclictest29907-21kworker/3:121:43:063
273469955,0cyclictest29907-21kworker/3:121:31:543
273469955,0cyclictest29907-21kworker/3:120:58:193
273469955,0cyclictest29907-21kworker/3:120:35:553
273469955,0cyclictest29907-21kworker/3:120:13:313
273469955,0cyclictest29907-21kworker/3:120:02:193
273469955,0cyclictest0-21swapper/319:50:113
273469952,3cyclictest802-21snmpd19:45:213
273469950,5cyclictest0-21swapper/323:26:333
273469950,5cyclictest0-21swapper/321:19:063
273469950,5cyclictest0-21swapper/319:55:183
273469950,5cyclictest0-21swapper/319:15:193
273469950,5cyclictest0-21swapper/300:27:403
273469950,4cyclictest2973-21/usr/sbin/munin20:30:193
273469950,4cyclictest29012-21sh00:06:203
273469950,4cyclictest2464-21sh23:53:453
273469950,0cyclictest0-21swapper/321:53:353
273429954,1cyclictest31-21ksoftirqd/221:40:012
273429954,1cyclictest0-21swapper/222:03:182
273429952,3cyclictest802-21snmpd19:10:122
273429950,5cyclictest0-21swapper/223:21:522
273429950,5cyclictest0-21swapper/223:06:532
273429950,5cyclictest0-21swapper/200:22:502
273429950,4cyclictest29766-21df23:35:132
273429950,2cyclictest0-21swapper/221:21:012
273429950,0cyclictest4195-21ssh21:47:352
273429950,0cyclictest0-21swapper/223:48:562
273429950,0cyclictest0-21swapper/221:52:492
273429950,0cyclictest0-21swapper/221:14:422
273379951,2cyclictest0-21swapper/119:25:121
273379950,5cyclictest0-21swapper/122:24:431
273379950,5cyclictest0-21swapper/121:44:081
273339951,4cyclictest9268-21kworker/0:022:05:000
273339951,2cyclictest0-21swapper/022:10:110
273339950,5cyclictest9268-21kworker/0:023:20:140
273339950,5cyclictest9268-21kworker/0:021:40:200
273339950,5cyclictest5222-21munin-run20:35:000
273339950,5cyclictest0-21swapper/021:34:500
273339950,5cyclictest0-21swapper/021:13:100
273339950,5cyclictest0-21swapper/020:40:160
273339950,5cyclictest0-21swapper/000:39:460
273339950,5cyclictest0-21swapper/000:39:460
273339950,4cyclictest29683-21latency_hist19:15:000
5020240,0sleep10-21swapper/123:39:101
273469944,0cyclictest29907-21kworker/3:123:35:033
273469944,0cyclictest29907-21kworker/3:120:47:073
273469944,0cyclictest29907-21kworker/3:119:28:443
273469944,0cyclictest0-21swapper/322:20:303
273469944,0cyclictest0-21swapper/300:35:143
273469944,0cyclictest0-21swapper/300:35:143
273469942,2cyclictest40-21ksoftirqd/322:55:123
273469942,1cyclictest23079-21ssh00:20:013
273469941,1cyclictest15954-21ssh21:37:383
273469940,4cyclictest8776-21smartctl20:40:143
273469940,4cyclictest32549-21/usr/sbin/munin23:05:213
273469940,4cyclictest30874-21/usr/sbin/munin21:45:143
273469940,4cyclictest11546-21apt-get21:20:123
273469940,4cyclictest0-21swapper/323:40:113
273469940,4cyclictest0-21swapper/322:25:183
273469940,4cyclictest0-21swapper/321:05:183
273469940,4cyclictest0-21swapper/321:00:163
273469940,4cyclictest0-21swapper/300:31:263
273469940,4cyclictest0-21swapper/300:31:263
273469940,4cyclictest0-21swapper/300:15:533
273469940,4cyclictest0-21swapper/300:11:133
273469940,3cyclictest2600-21users19:20:203
273469940,3cyclictest25235-21sh21:57:553
273469940,3cyclictest24353-21irqstats21:10:163
273469940,3cyclictest23050-21/usr/sbin/munin21:25:153
273469940,3cyclictest23028-21ssh22:12:353
273469940,3cyclictest205-21systemd-journal22:35:003
273469940,3cyclictest19567-21/usr/sbin/munin23:30:123
273469940,3cyclictest19300-21sh22:42:263
273469940,3cyclictest1844-21/usr/sbin/munin20:25:203
273469940,3cyclictest15380-21sed20:55:003
273469940,3cyclictest14431-21ssh23:11:353
273469940,1cyclictest4999-21/usr/sbin/munin23:55:163
273469940,1cyclictest29201-21/usr/sbin/munin22:00:143
273469940,1cyclictest1906-21/usr/sbin/munin22:50:163
273469940,1cyclictest0-21swapper/322:05:143
273429944,0cyclictest31-21ksoftirqd/219:25:122
273429944,0cyclictest31-21ksoftirqd/200:25:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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