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2025-11-20 - 02:19
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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 Thu Nov 20, 2025 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194442199166,28sleep00-21swapper/019:08:070
195552195179,11sleep10-21swapper/119:09:361
195622189172,12sleep30-21swapper/319:09:423
173842169149,15sleep20-21swapper/219:05:122
258682490,0sleep10-21swapper/123:15:201
287882430,0sleep20-21swapper/222:45:072
91472120,0sleep00-21swapper/000:12:480
289622110,0sleep00-21swapper/023:00:380
206982100,0sleep1211ktimersoftd/100:18:501
197639991,4cyclictest1032-21munin-run23:20:010
197729960,6cyclictest0-21swapper/223:50:152
197729960,5cyclictest61-21kswapd023:40:082
197639962,4cyclictest28151-21munin-run23:50:000
197639960,5cyclictest20471-21kworker/0:020:05:010
197639960,3cyclictest32125-21munin-run21:10:010
32415250,0sleep10-21swapper/122:46:141
197779955,0cyclictest2079-21kworker/3:200:16:003
197779955,0cyclictest1967-21kworker/3:023:20:013
197779955,0cyclictest1967-21kworker/3:022:46:273
197779955,0cyclictest1967-21kworker/3:021:50:283
197779950,5cyclictest8210-21ssh22:18:273
197779950,5cyclictest0-21swapper/322:30:203
197779950,5cyclictest0-21swapper/321:21:313
197779950,4cyclictest20781-21diskstats19:15:003
197779950,4cyclictest20694-21apt-get22:25:023
197729955,0cyclictest0-21swapper/223:12:282
197729955,0cyclictest0-21swapper/221:39:202
197729953,2cyclictest3466-21kworker/2:022:58:292
197729950,5cyclictest0-21swapper/221:49:412
197729950,4cyclictest25907-21apt-get00:05:122
197679951,2cyclictest0-21swapper/100:30:161
197679950,5cyclictest0-21swapper/123:51:081
197679950,4cyclictest0-21swapper/121:12:411
197639955,0cyclictest32117-21diskmemload22:07:140
197639955,0cyclictest0-21swapper/022:36:200
197639952,3cyclictest20471-21kworker/0:020:00:010
197639951,4cyclictest20471-21kworker/0:022:42:530
197639951,4cyclictest11141-21kworker/0:123:34:130
197639950,5cyclictest12771-21grep00:30:230
197639950,5cyclictest0-21swapper/023:53:090
197639950,5cyclictest0-21swapper/000:23:340
197639950,5cyclictest0-21swapper/000:16:440
197639950,1cyclictest11132-21munin-run23:25:000
197639950,0cyclictest0-21swapper/023:56:560
197639950,0cyclictest0-21swapper/021:38:250
197779944,0cyclictest1967-21kworker/3:022:24:033
197779944,0cyclictest1967-21kworker/3:022:01:403
197779944,0cyclictest1967-21kworker/3:020:32:063
197779944,0cyclictest1967-21kworker/3:019:24:563
197779944,0cyclictest0-21swapper/322:59:353
197779942,2cyclictest714-21snmpd19:50:433
197779942,2cyclictest29072-21ssh22:12:283
197779941,3cyclictest55950irq/130-eth021:56:533
197779941,3cyclictest0-21swapper/300:10:123
197779940,4cyclictest8967-21apt-get22:35:123
197779940,4cyclictest16671-21ssh23:10:483
197779940,4cyclictest0-21swapper/323:45:163
197779940,4cyclictest0-21swapper/323:40:093
197779940,4cyclictest0-21swapper/323:15:123
197779940,4cyclictest0-21swapper/322:50:113
197779940,4cyclictest0-21swapper/321:42:533
197779940,4cyclictest0-21swapper/321:11:273
197779940,4cyclictest0-21swapper/320:58:393
197779940,4cyclictest0-21swapper/320:16:273
197779940,4cyclictest0-21swapper/300:30:163
197779940,3cyclictest8000-21ssh21:30:113
197779940,3cyclictest6336-21sh23:05:343
197779940,3cyclictest3351-21/usr/sbin/munin20:10:173
197779940,3cyclictest32157-21apt20:05:013
197779940,3cyclictest31364-21hddtemp_smartct21:25:173
197779940,3cyclictest29895-21sed23:50:193
197779940,3cyclictest27061-21ssh21:39:423
197779940,3cyclictest24107-21ssh00:36:133
197779940,3cyclictest23072-21/usr/sbin/munin00:20:113
197779940,3cyclictest22072-21sh22:40:593
197779940,3cyclictest21332-21sh23:30:033
197779940,3cyclictest15984-21apt-get00:00:123
197779940,3cyclictest10910-21hddtemp_smartct20:25:153
197779940,1cyclictest6752-21irqstats21:45:143
197779940,1cyclictest6700-21diskstats23:55:143
197779940,1cyclictest1123-21df00:25:133
197779940,1cyclictest10903-21cut21:15:143
197779940,0cyclictest0-21swapper/323:35:053
197729943,1cyclictest31-21ksoftirqd/220:40:002
197729942,2cyclictest7884-21kworker/2:220:07:572
197729942,2cyclictest0-21swapper/200:34:062
197729942,1cyclictest3525-21ssh23:36:522
197729941,3cyclictest3400-21cat20:10:172
197729941,3cyclictest25679-21ssh21:55:092
197729940,4cyclictest5064-21ssh23:21:082
197729940,4cyclictest32117-21diskmemload23:25:142
197729940,4cyclictest0-21swapper/223:49:352
197729940,4cyclictest0-21swapper/223:30:052
197729940,4cyclictest0-21swapper/223:15:122
197729940,4cyclictest0-21swapper/223:05:112
197729940,4cyclictest0-21swapper/222:50:112
197729940,4cyclictest0-21swapper/222:40:152
197729940,4cyclictest0-21swapper/222:35:122
197729940,4cyclictest0-21swapper/222:29:112
197729940,4cyclictest0-21swapper/222:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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