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2026-08-18 - 08:00
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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 Tue Aug 18, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228462202187,11sleep10-21swapper/119:09:241
228402195178,12sleep00-21swapper/019:09:190
225872179162,12sleep30-21swapper/319:06:053
228272119102,12sleep20-21swapper/219:09:082
134702490,0sleep20-21swapper/221:23:122
205682470,0sleep00-21swapper/021:42:560
205682470,0sleep00-21swapper/021:42:560
278042460,0sleep00-21swapper/000:14:090
61582450,0sleep00-21swapper/000:02:510
231362430,0sleep10-21swapper/123:05:201
152192400,0sleep00-21swapper/023:50:310
31932100,1sleep33196-21unixbench_singl20:35:203
230879981,4cyclictest24871-21munin-run23:40:000
230879960,6cyclictest0-21swapper/020:35:120
230879960,3cyclictest6598-21sendmail00:20:010
230879960,3cyclictest31192-21perf22:05:020
16426260,0sleep10-21swapper/121:05:011
995250,0sleep20-21swapper/200:00:132
230989955,0cyclictest31796-21kworker/3:022:29:023
230989955,0cyclictest31796-21kworker/3:020:59:263
230989955,0cyclictest31796-21kworker/3:020:03:293
230989955,0cyclictest31796-21kworker/3:019:52:183
230989955,0cyclictest31796-21kworker/3:019:41:063
230989955,0cyclictest0-21swapper/323:46:143
230989955,0cyclictest0-21swapper/319:30:153
230989950,5cyclictest0-21swapper/322:35:433
230989950,5cyclictest0-21swapper/322:30:273
230989950,5cyclictest0-21swapper/321:41:583
230989950,5cyclictest0-21swapper/321:41:583
230989950,0cyclictest0-21swapper/322:22:083
230979955,0cyclictest0-21swapper/221:58:092
230979952,2cyclictest0-21swapper/220:30:132
230979950,5cyclictest0-21swapper/223:49:272
230979950,5cyclictest0-21swapper/223:26:552
230939950,5cyclictest0-21swapper/100:27:331
230879955,0cyclictest0-21swapper/022:20:200
230879950,5cyclictest7253-21ssh22:57:490
230879950,5cyclictest30750-21uptime19:20:200
230879950,5cyclictest18690-21diskmemload23:30:120
230879950,5cyclictest0-21swapper/023:20:130
230879950,5cyclictest0-21swapper/022:54:060
230879950,5cyclictest0-21swapper/021:37:160
230879950,5cyclictest0-21swapper/020:30:010
230879950,5cyclictest0-21swapper/000:30:410
230879950,5cyclictest0-21swapper/000:27:550
10479250,4sleep00-21swapper/021:21:180
230989944,0cyclictest31796-21kworker/3:020:48:163
230989944,0cyclictest31796-21kworker/3:020:14:413
230989944,0cyclictest31796-21kworker/3:019:29:543
230989944,0cyclictest0-21swapper/323:55:063
230989944,0cyclictest0-21swapper/323:31:143
230989944,0cyclictest0-21swapper/323:29:123
230989944,0cyclictest0-21swapper/321:00:023
230989943,1cyclictest0-21swapper/320:17:253
230989942,2cyclictest24294-21expr22:50:143
230989942,1cyclictest802-21snmpd22:45:123
230989942,1cyclictest27468-21ssh00:30:133
230989941,3cyclictest802-21snmpd21:37:423
230989940,4cyclictest18690-21diskmemload23:10:073
230989940,4cyclictest1844-21ssh21:50:113
230989940,4cyclictest10645-21diskstats00:05:153
230989940,4cyclictest0-21swapper/323:42:423
230989940,4cyclictest0-21swapper/323:20:133
230989940,4cyclictest0-21swapper/323:19:223
230989940,4cyclictest0-21swapper/323:09:223
230989940,4cyclictest0-21swapper/322:55:113
230989940,4cyclictest0-21swapper/321:57:153
230989940,4cyclictest0-21swapper/321:34:403
230989940,4cyclictest0-21swapper/321:25:133
230989940,4cyclictest0-21swapper/321:20:133
230989940,4cyclictest0-21swapper/321:18:563
230989940,4cyclictest0-21swapper/321:10:103
230989940,4cyclictest0-21swapper/300:24:433
230989940,4cyclictest0-21swapper/300:15:113
230989940,4cyclictest0-21swapper/300:10:113
230989940,3cyclictest9591-21diskstats19:45:133
230989940,3cyclictest3589-21ssh22:40:003
230989940,3cyclictest26200-21irqstats19:15:013
230989940,3cyclictest21791-21ssh22:00:133
230989940,3cyclictest21197-21latency_hist20:10:003
230989940,3cyclictest16606-21ssh00:25:013
230989940,3cyclictest1225-21irqstats00:00:153
230989940,3cyclictest10540-21ntp_states22:10:173
230989940,3cyclictest0-21swapper/320:25:123
230989940,1cyclictest0-21swapper/319:35:133
230979943,1cyclictest57150irq/125-eth021:10:092
230979942,1cyclictest802-21snmpd20:55:052
230979942,1cyclictest10061-21/usr/sbin/munin00:05:232
230979941,3cyclictest802-21snmpd23:01:192
230979941,3cyclictest0-21swapper/220:05:112
230979941,2cyclictest0-21swapper/221:50:122
230979941,2cyclictest0-21swapper/220:20:132
230979941,1cyclictest0-21swapper/223:40:112
230979941,1cyclictest0-21swapper/200:25:142
230979940,4cyclictest5154-21irqstats22:40:172
230979940,4cyclictest21697-21ssh22:00:092
230979940,4cyclictest20827-21rm21:26:342
230979940,4cyclictest18086-21ssh23:52:202
230979940,4cyclictest0-21swapper/223:35:122
230979940,4cyclictest0-21swapper/223:31:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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