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2026-04-20 - 02:30
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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 Mon Apr 20, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36802204189,11sleep10-21swapper/119:09:001
15392203187,12sleep00-21swapper/019:05:100
34702196179,12sleep30-21swapper/319:06:183
15362144124,15sleep20-21swapper/219:05:082
176162480,0sleep10-21swapper/122:52:381
211012470,0sleep10-21swapper/100:14:301
54862450,0sleep00-21swapper/000:06:030
62132440,0sleep20-21swapper/221:44:222
212872430,0sleep10-21swapper/120:45:191
8992420,0sleep10-21swapper/121:41:091
23532420,0sleep10-21swapper/120:10:121
171472120,0sleep20-21swapper/223:55:452
109252110,0sleep10-21swapper/122:33:521
39429980,7cyclictest0-21swapper/223:00:132
39479960,5cyclictest19860-21apt-get19:40:023
39429960,6cyclictest30298-21ssh00:02:372
39429960,5cyclictest0-21swapper/222:25:132
39479952,3cyclictest0-21swapper/321:00:013
39479950,5cyclictest0-21swapper/322:55:123
39479950,5cyclictest0-21swapper/320:10:273
39479950,5cyclictest0-21swapper/300:23:123
39479950,4cyclictest21208-21irqstats23:10:153
39479950,4cyclictest12405-21apt-get20:30:133
39429955,0cyclictest31-21ksoftirqd/221:20:022
39429953,2cyclictest31-21ksoftirqd/222:10:132
39429952,3cyclictest24453-21ssh21:52:552
39429950,5cyclictest0-21swapper/222:45:472
39429950,4cyclictest2280-21ssh00:05:122
39429950,0cyclictest0-21swapper/222:06:482
39389951,3cyclictest0-21swapper/121:35:121
39389951,3cyclictest0-21swapper/120:35:121
39389951,2cyclictest0-21swapper/100:30:131
39389950,5cyclictest0-21swapper/123:31:201
39389950,5cyclictest0-21swapper/122:17:261
39389950,5cyclictest0-21swapper/122:07:051
39379954,1cyclictest0-21swapper/022:36:170
39379953,1cyclictest205-21systemd-journal20:25:010
39379951,4cyclictest0-21swapper/020:30:020
39379950,5cyclictest8310-21ssh23:51:400
39379950,5cyclictest0-21swapper/022:48:050
39379950,5cyclictest0-21swapper/021:19:040
39379950,5cyclictest0-21swapper/000:15:120
27466250,0sleep10-21swapper/100:17:091
6597240,0sleep00-21swapper/023:19:290
39479944,0cyclictest25101-21kworker/3:122:11:413
39479944,0cyclictest25101-21kworker/3:122:00:303
39479943,1cyclictest31255-21perl00:35:153
39479943,1cyclictest2292-21grep22:45:143
39479942,2cyclictest5052-21ssh23:02:173
39479942,1cyclictest7262-21/usr/sbin/munin20:20:183
39479942,1cyclictest57150irq/125-eth023:55:123
39479941,3cyclictest802-21snmpd21:21:073
39479941,2cyclictest0-21swapper/321:15:113
39479941,2cyclictest0-21swapper/319:45:113
39479940,4cyclictest3635-21df22:30:153
39479940,4cyclictest27666-21apt-get21:00:143
39479940,4cyclictest21051-21ssh22:22:443
39479940,4cyclictest18887-21ssh22:37:293
39479940,4cyclictest16359-21ssh22:05:033
39479940,4cyclictest10193-21ssh21:45:313
39479940,4cyclictest0-21swapper/323:50:123
39479940,4cyclictest0-21swapper/323:36:553
39479940,4cyclictest0-21swapper/323:31:003
39479940,4cyclictest0-21swapper/323:16:513
39479940,4cyclictest0-21swapper/322:51:023
39479940,4cyclictest0-21swapper/321:50:123
39479940,4cyclictest0-21swapper/320:05:123
39479940,4cyclictest0-21swapper/319:15:123
39479940,4cyclictest0-21swapper/300:25:143
39479940,4cyclictest0-21swapper/300:05:123
39479940,4cyclictest0-21swapper/300:00:133
39479940,3cyclictest9731-21apt-get20:25:133
39479940,3cyclictest802-21snmpd20:15:123
39479940,3cyclictest31556-21/usr/sbin/munin21:40:193
39479940,3cyclictest30866-21memory20:00:173
39479940,3cyclictest24682-21irqstats22:40:163
39479940,3cyclictest24035-21sh21:36:443
39479940,3cyclictest23047-21diskstats00:15:143
39479940,3cyclictest21478-21irqstats00:30:163
39479940,3cyclictest2023-21sh21:25:553
39479940,3cyclictest19903-21python23:25:203
39479940,3cyclictest19831-21apt-get20:45:113
39479940,3cyclictest18566-21ssh23:40:283
39479940,3cyclictest1830-21/usr/sbin/munin21:10:183
39479940,3cyclictest12648-21sh23:05:423
39479940,3cyclictest10021-21cut21:30:163
39479940,1cyclictest9772-21/usr/sbin/munin19:20:133
39479940,1cyclictest8822-21tune2fs23:20:153
39479940,1cyclictest26206-21sed22:25:163
39479940,1cyclictest14869-21/usr/sbin/munin20:35:203
39479940,1cyclictest14708-21/usr/sbin/munin19:30:153
39479940,1cyclictest12241-21/usr/sbin/munin19:25:133
39429944,0cyclictest0-21swapper/222:20:012
39429943,1cyclictest30524-21tr20:00:142
39429942,2cyclictest21111-21cat23:10:142
39429941,1cyclictest0-21swapper/223:25:122
39429940,4cyclictest436-21ssh21:10:132
39429940,4cyclictest1675-21ssh00:20:192
39429940,4cyclictest0-21swapper/223:50:122
39429940,4cyclictest0-21swapper/223:45:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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