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2026-08-19 - 06:54
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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 Aug 19, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
186452201185,11sleep10-21swapper/119:09:521
183582194176,13sleep30-21swapper/319:06:103
183502181163,13sleep00-21swapper/019:06:020
164312180162,13sleep20-21swapper/219:05:032
7662490,0sleep10-21swapper/100:19:181
62192460,0sleep00-21swapper/022:26:430
74542440,0sleep30-21swapper/322:27:303
33852430,0sleep10-21swapper/122:41:371
124642420,0sleep00-21swapper/023:51:420
289252400,0sleep00-21swapper/000:16:320
69892390,1sleep26991-21latency_hist20:55:002
188199981,3cyclictest4855-21awk00:05:010
188199971,3cyclictest31697-21munin-run21:35:010
20961260,0sleep020964-21timerandwakeup22:50:210
188299961,2cyclictest0-21swapper/320:10:123
188299960,6cyclictest26665-21rm23:25:503
188299960,6cyclictest0-21swapper/321:45:523
188299960,6cyclictest0-21swapper/300:37:193
188199960,3cyclictest24456-21sendmail-msp19:20:000
188199960,1cyclictest21198-21awk19:15:000
5753250,0sleep10-21swapper/100:21:101
5028250,1sleep20-21swapper/223:48:172
188299955,0cyclictest696-21kworker/3:219:11:453
188299955,0cyclictest21429-21kworker/3:120:07:453
188299955,0cyclictest21429-21kworker/3:119:22:573
188299955,0cyclictest19414-21kworker/3:022:55:403
188299955,0cyclictest19414-21kworker/3:020:52:313
188299955,0cyclictest19414-21kworker/3:020:41:193
188299954,1cyclictest7610-21ssh00:05:293
188299952,3cyclictest27787-21ssh00:00:073
188299952,3cyclictest0-21swapper/300:22:493
188299952,3cyclictest0-21swapper/300:15:273
188299950,5cyclictest0-21swapper/323:56:363
188299950,5cyclictest0-21swapper/323:43:553
188299950,5cyclictest0-21swapper/323:15:063
188299950,5cyclictest0-21swapper/322:38:363
188299950,5cyclictest0-21swapper/322:30:543
188299950,5cyclictest0-21swapper/322:20:153
188299950,5cyclictest0-21swapper/322:05:263
188299950,5cyclictest0-21swapper/322:02:223
188299950,5cyclictest0-21swapper/321:56:123
188299950,5cyclictest0-21swapper/321:54:333
188299950,5cyclictest0-21swapper/300:32:363
188299950,5cyclictest0-21swapper/300:26:103
188299950,4cyclictest7825-21ssh22:11:013
188299950,3cyclictest12537-21ssh23:35:183
188299950,0cyclictest0-21swapper/322:51:543
188299950,0cyclictest0-21swapper/321:41:423
188259955,0cyclictest0-21swapper/221:54:532
188259950,5cyclictest0-21swapper/222:43:122
188259950,5cyclictest0-21swapper/221:44:072
188259950,5cyclictest0-21swapper/200:16:452
188259950,4cyclictest7293-21apt-get19:50:122
188259950,4cyclictest0-21swapper/222:35:132
188259950,0cyclictest14250-21diskmemload23:50:082
188209952,2cyclictest0-21swapper/119:15:121
188209951,2cyclictest0-21swapper/123:40:111
188209951,2cyclictest0-21swapper/123:35:111
188209950,5cyclictest0-21swapper/123:32:101
188209950,5cyclictest0-21swapper/122:57:141
188209950,5cyclictest0-21swapper/121:23:231
188209950,5cyclictest0-21swapper/100:37:461
188209950,5cyclictest0-21swapper/100:11:001
188199952,3cyclictest31897-21ssh22:55:450
188199950,3cyclictest8439-21ssh21:23:010
188199950,1cyclictest16723-21awk22:00:000
17387250,0sleep10-21swapper/122:00:131
188299944,0cyclictest21429-21kworker/3:119:34:083
188299944,0cyclictest19414-21kworker/3:021:03:433
188299944,0cyclictest19414-21kworker/3:020:30:083
188299944,0cyclictest0-21swapper/321:30:043
188299941,3cyclictest0-21swapper/322:40:153
188299940,4cyclictest14497-21munin-run20:05:003
188299940,4cyclictest0-21swapper/323:01:573
188299940,4cyclictest0-21swapper/322:15:133
188299940,4cyclictest0-21swapper/321:20:163
188299940,4cyclictest0-21swapper/321:15:113
188299940,3cyclictest9227-21ssh22:45:133
188299940,3cyclictest80082sleep323:50:013
188299940,3cyclictest6683-21ssh21:38:263
188299940,3cyclictest4782-21cat19:45:013
188299940,3cyclictest27913-21expr19:25:113
188299940,3cyclictest26507-21/usr/sbin/munin23:10:133
188299940,3cyclictest21434-21memory19:15:003
188299940,3cyclictest20410-21perl20:15:153
188299940,3cyclictest17332-21ssh21:10:413
188299940,3cyclictest15243-21ssh00:10:133
188299940,3cyclictest14669-21ssh21:25:333
188299940,3cyclictest14669-21ssh21:25:333
188299940,3cyclictest13696-21/usr/sbin/munin23:20:133
188299940,3cyclictest1281-21ssh23:30:113
188299940,3cyclictest10287-21df19:55:143
188299940,0cyclictest0-21swapper/323:47:043
188259944,0cyclictest0-21swapper/222:17:442
188259943,1cyclictest6741-21grep00:05:212
188259943,1cyclictest12472-21diskstats22:30:132
188259941,2cyclictest0-21swapper/222:10:132
188259941,2cyclictest0-21swapper/221:45:152
188259941,2cyclictest0-21swapper/219:55:132
188259941,2cyclictest0-21swapper/219:35:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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