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2026-04-13 - 13:17
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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 13, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63822201184,12sleep10-21swapper/119:07:151
64472190173,12sleep30-21swapper/319:08:053
65882185169,12sleep00-21swapper/019:09:550
6446210992,12sleep20-21swapper/219:08:052
296862490,0sleep10-21swapper/122:57:231
64802460,0sleep36462-21cron22:15:013
220552440,0sleep10-21swapper/122:53:581
198242440,0sleep30-21swapper/322:05:163
239612430,0sleep00-21swapper/022:23:100
148822110,0sleep00-21swapper/022:18:540
249332100,0sleep10-21swapper/121:51:531
67679991,4cyclictest22865-21sendmail-msp21:20:010
12302290,0sleep012304-21switchtime23:20:200
67679980,4cyclictest30097-21munin-run21:55:000
67779960,6cyclictest0-21swapper/322:36:123
67679964,1cyclictest9381-21munin-run21:45:010
67679962,4cyclictest6493-21perf22:15:010
67679962,4cyclictest22289-21basename19:40:010
67679961,5cyclictest21371-21kworker/0:019:30:150
67679960,3cyclictest9676-21sendmail-msp20:20:000
67679960,3cyclictest12383-21sendmail19:20:010
11806260,0sleep00-21swapper/023:51:540
67779955,0cyclictest0-21swapper/323:57:143
67779955,0cyclictest0-21swapper/322:02:263
67779950,5cyclictest0-21swapper/322:46:143
67779950,5cyclictest0-21swapper/322:46:133
67779950,5cyclictest0-21swapper/300:16:273
67739955,0cyclictest0-21swapper/223:25:212
67739955,0cyclictest0-21swapper/221:49:192
67739955,0cyclictest0-21swapper/200:21:222
67739953,2cyclictest31-21ksoftirqd/223:14:562
67739951,3cyclictest0-21swapper/200:15:102
67739950,5cyclictest0-21swapper/223:49:552
67739950,5cyclictest0-21swapper/221:38:062
67689955,0cyclictest0-21swapper/122:43:301
67689951,2cyclictest0-21swapper/122:30:121
67689950,5cyclictest0-21swapper/123:42:181
67689950,5cyclictest0-21swapper/121:59:441
67689950,5cyclictest0-21swapper/121:22:451
67689950,5cyclictest0-21swapper/121:13:451
67679955,0cyclictest2181-21diskmemload00:15:070
67679953,1cyclictest0-21swapper/020:55:000
67679951,2cyclictest0-21swapper/021:25:110
67679951,2cyclictest0-21swapper/021:20:130
67679950,5cyclictest32167-21munin-run20:00:010
67679950,5cyclictest0-21swapper/023:29:000
67679950,5cyclictest0-21swapper/000:35:110
67679950,5cyclictest0-21swapper/000:10:110
67679950,4cyclictest0-21swapper/023:55:130
67679950,0cyclictest0-21swapper/021:33:110
27302250,0sleep30-21swapper/300:31:133
19425250,0sleep20-21swapper/223:24:292
11497250,0sleep00-21swapper/022:00:570
67779944,0cyclictest0-21swapper/321:53:593
67779944,0cyclictest0-21swapper/300:05:403
67779943,1cyclictest28650-21needreboot19:50:183
67779942,2cyclictest0-21swapper/322:30:123
67779942,1cyclictest9384-21diskstats19:15:003
67779942,1cyclictest1508-21/usr/sbin/munin00:35:143
67779942,1cyclictest13622-21df_inode21:15:153
67779941,3cyclictest802-21snmpd19:55:173
67779941,2cyclictest0-21swapper/321:30:123
67779940,4cyclictest57150irq/125-eth020:10:113
67779940,4cyclictest29138-21apt-get23:45:013
67779940,4cyclictest28840-21irqstats00:00:163
67779940,4cyclictest14121-21apt-get22:50:143
67779940,4cyclictest11112-21ssh23:51:283
67779940,4cyclictest0-21swapper/323:40:233
67779940,4cyclictest0-21swapper/323:39:233
67779940,4cyclictest0-21swapper/323:26:563
67779940,4cyclictest0-21swapper/323:20:123
67779940,4cyclictest0-21swapper/323:04:343
67779940,4cyclictest0-21swapper/322:40:133
67779940,4cyclictest0-21swapper/322:15:123
67779940,4cyclictest0-21swapper/321:41:233
67779940,4cyclictest0-21swapper/321:20:213
67779940,4cyclictest0-21swapper/321:14:013
67779940,4cyclictest0-21swapper/320:50:133
67779940,4cyclictest0-21swapper/320:45:123
67779940,4cyclictest0-21swapper/319:30:113
67779940,3cyclictest618-21perl21:05:143
67779940,3cyclictest25179-21ssh23:10:413
67779940,3cyclictest19821-21ssh00:27:523
67779940,3cyclictest1940-21perl21:25:143
67779940,3cyclictest17856-21ssh00:10:253
67779940,3cyclictest15744-21perl19:25:133
67779940,3cyclictest12161-21users21:45:213
67779940,3cyclictest10417-21df_inode20:20:143
67779940,3cyclictest0-21swapper/322:25:113
67779940,3cyclictest0-21swapper/300:20:013
67779940,1cyclictest6884-21/usr/sbin/munin19:10:123
67779940,1cyclictest31152-21/usr/sbin/munin23:30:203
67779940,1cyclictest24260-21/usr/sbin/munin22:55:203
67779940,0cyclictest0-21swapper/321:35:573
67739944,0cyclictest9350-21kworker/2:023:57:452
67739944,0cyclictest31-21ksoftirqd/220:40:002
67739944,0cyclictest31-21ksoftirqd/220:30:002
67739944,0cyclictest0-21swapper/222:50:332
67739944,0cyclictest0-21swapper/200:01:262
67739943,1cyclictest25633-21cut20:50:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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