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2026-04-03 - 13:34
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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 rack3slot3.osadl.org (updated Fri Apr 03, 2026 00:46:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3786210893sleep70-21swapper/719:06:029
3762210190sleep110-21swapper/1119:05:413
991850990irq/53-eth0-rx-0-21swapper/119:09:111
991850930irq/53-eth0-rx-0-21swapper/219:07:344
991850920irq/53-eth0-rx-0-21swapper/419:07:566
991850920irq/53-eth0-rx-0-21swapper/319:06:425
393029282sleep90-21swapper/919:07:5111
991850900irq/53-eth0-rx-0-21swapper/819:05:3810
991850870irq/53-eth0-rx-0-21swapper/519:07:227
383428774sleep60-21swapper/619:06:378
408026866sleep100-21swapper/1019:09:042
380926653sleep00-21swapper/019:06:190
424999370cyclictest0-21swapper/021:14:050
424999340cyclictest0-21swapper/020:13:130
429899333cyclictest7206-21nscd21:10:323
424999320cyclictest0-21swapper/019:16:370
424999310cyclictest16433-21chrt19:24:440
4249993013cyclictest0-21swapper/021:15:090
424999290cyclictest2345-21lldpd21:09:590
991850280irq/53-eth0-rx-0-21swapper/120:13:151
4292992827cyclictest991850irq/53-eth0-rx-19:16:4010
4267992726cyclictest991850irq/53-eth0-rx-19:16:375
4259992423cyclictest991850irq/53-eth0-rx-19:16:404
4296992019cyclictest991850irq/53-eth0-rx-19:16:3711
429699192cyclictest0-21swapper/921:54:3911
4249991918cyclictest991950irq/54-eth0-tx-21:21:080
429699181cyclictest991850irq/53-eth0-rx-21:31:2011
429699181cyclictest0-21swapper/923:53:2611
429699181cyclictest0-21swapper/923:34:3411
429699181cyclictest0-21swapper/922:47:2611
429699181cyclictest0-21swapper/921:46:0611
429699181cyclictest0-21swapper/921:36:3611
429699181cyclictest0-21swapper/921:26:0811
429699181cyclictest0-21swapper/921:22:0111
429699181cyclictest0-21swapper/921:16:4211
429699181cyclictest0-21swapper/920:35:0911
429699181cyclictest0-21swapper/920:05:1411
429699181cyclictest0-21swapper/900:26:3611
429699181cyclictest0-21swapper/900:18:3311
429699181cyclictest0-21swapper/900:14:5811
429699181cyclictest0-21swapper/900:14:5811
4259991816cyclictest2308-21snmpd19:38:244
4298991716cyclictest991950irq/54-eth0-tx-21:18:373
4296991716cyclictest0-21swapper/922:51:1011
4296991716cyclictest0-21swapper/921:44:1911
429699170cyclictest991850irq/53-eth0-rx-22:17:4511
429699170cyclictest991850irq/53-eth0-rx-22:04:4311
429699170cyclictest0-21swapper/923:37:2311
429699170cyclictest0-21swapper/923:37:2311
429699170cyclictest0-21swapper/923:19:0011
429699170cyclictest0-21swapper/923:07:1611
429699170cyclictest0-21swapper/922:35:2611
429699170cyclictest0-21swapper/922:26:5111
429699170cyclictest0-21swapper/922:23:3311
429699170cyclictest0-21swapper/922:14:5311
429699170cyclictest0-21swapper/919:41:1511
429699170cyclictest0-21swapper/919:35:1511
429699170cyclictest0-21swapper/900:23:2811
429699170cyclictest0-21swapper/900:23:2811
4284991716cyclictest4007-21qemu-kvm19:45:128
4284991716cyclictest4006-21qemu-kvm19:35:138
4284991716cyclictest16849-21qemu-kvm20:08:398
4284991715cyclictest4006-21qemu-kvm19:11:448
427899171cyclictest0-21swapper/522:45:367
427899171cyclictest0-21swapper/521:15:147
4259991715cyclictest2308-21snmpd20:25:564
4250991715cyclictest172450irq/56-eth1-rx-19:16:391
424999171cyclictest0-21swapper/022:45:320
991850160irq/53-eth0-rx-0-21swapper/700:04:239
991850160irq/53-eth0-rx-0-21swapper/420:13:236
429899160cyclictest0-21swapper/1120:08:183
4296991615cyclictest0-21swapper/922:58:0511
4296991615cyclictest0-21swapper/922:40:1911
4296991615cyclictest0-21swapper/922:34:1911
4296991615cyclictest0-21swapper/921:55:1611
4296991615cyclictest0-21swapper/921:11:1111
4296991615cyclictest0-21swapper/921:08:4311
4296991615cyclictest0-21swapper/920:53:3711
4296991615cyclictest0-21swapper/900:34:4011
4296991615cyclictest0-21swapper/900:07:2911
428599160cyclictest0-21swapper/720:13:109
428599160cyclictest0-21swapper/700:30:269
4284991615cyclictest4007-21qemu-kvm19:41:528
4284991615cyclictest23493-21python00:35:238
4284991614cyclictest4007-21qemu-kvm19:15:148
427899161cyclictest2242-40kipmi000:23:597
427899161cyclictest2242-40kipmi000:23:597
427899160cyclictest0-21swapper/522:20:187
426799169cyclictest991950irq/54-eth0-tx-22:14:415
426799165cyclictest0-21swapper/323:33:545
426799161cyclictest0-21swapper/323:40:175
426799161cyclictest0-21swapper/323:06:125
4259991614cyclictest2308-21snmpd20:10:554
425999161cyclictest0-21swapper/221:36:514
425999160cyclictest0-21swapper/221:13:354
424999161cyclictest0-21swapper/023:57:220
424999161cyclictest0-21swapper/023:40:210
424999161cyclictest0-21swapper/023:06:300
424999161cyclictest0-21swapper/021:36:360
424999161cyclictest0-21swapper/021:31:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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