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2026-04-22 - 11:46
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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 Wed Apr 22, 2026 00:46:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8477210995sleep50-21swapper/519:05:037
11352210894sleep20-21swapper/219:06:364
11390210591sleep60-21swapper/619:07:048
11345210393sleep80-21swapper/819:06:3010
991850990irq/53-eth0-rx-0-21swapper/119:08:571
991850980irq/53-eth0-rx-0-21swapper/419:05:096
12850960irq/42-ahci0-21swapper/719:09:079
991850880irq/53-eth0-rx-0-21swapper/319:06:075
991850870irq/53-eth0-rx-0-21swapper/1119:07:313
1162827772sleep90-21swapper/919:09:3211
1162926765sleep100-21swapper/1019:09:332
1145726553sleep00-21swapper/019:07:580
1182299330cyclictest0-21swapper/1119:16:413
11822993029cyclictest22789-21kworker/11:121:14:323
11822992019cyclictest0-21swapper/1119:10:273
1182299190cyclictest991850irq/53-eth0-rx-21:18:343
1182199192cyclictest991850irq/53-eth0-rx-23:42:312
1182199192cyclictest991850irq/53-eth0-rx-23:42:302
1182199192cyclictest991850irq/53-eth0-rx-23:36:282
1182199192cyclictest991850irq/53-eth0-rx-22:56:012
1182199192cyclictest991850irq/53-eth0-rx-22:15:192
1182199192cyclictest991850irq/53-eth0-rx-22:06:482
1182199192cyclictest991850irq/53-eth0-rx-21:54:502
1182199192cyclictest991850irq/53-eth0-rx-00:15:442
11821991917cyclictest23463-21kworker/10:121:21:422
11821991817cyclictest26948-1kworker/10:2H23:50:022
11821991817cyclictest26948-1kworker/10:2H23:50:012
11821991817cyclictest23463-21kworker/10:100:06:452
11821991817cyclictest0-21swapper/1023:16:572
11821991817cyclictest0-21swapper/1021:43:122
11821991817cyclictest0-21swapper/1021:35:352
11821991817cyclictest0-21swapper/1021:00:192
11821991817cyclictest0-21swapper/1021:00:192
11821991817cyclictest0-21swapper/1000:37:082
11821991817cyclictest0-21swapper/1000:03:362
1182199181cyclictest991950irq/54-eth0-tx-22:24:292
1182199181cyclictest991950irq/54-eth0-tx-22:11:012
1182199181cyclictest991950irq/54-eth0-tx-22:01:492
1182199181cyclictest991950irq/54-eth0-tx-21:19:512
1182199181cyclictest991850irq/53-eth0-rx-23:58:252
1182199181cyclictest991850irq/53-eth0-rx-23:48:092
1182199181cyclictest991850irq/53-eth0-rx-23:33:142
1182199181cyclictest991850irq/53-eth0-rx-23:25:162
1182199181cyclictest991850irq/53-eth0-rx-23:20:152
1182199181cyclictest991850irq/53-eth0-rx-23:11:502
1182199181cyclictest991850irq/53-eth0-rx-22:51:262
1182199181cyclictest991850irq/53-eth0-rx-22:43:552
1182199181cyclictest991850irq/53-eth0-rx-22:25:312
1182199181cyclictest991850irq/53-eth0-rx-21:56:472
1182199181cyclictest991850irq/53-eth0-rx-21:28:092
1182199181cyclictest991850irq/53-eth0-rx-20:46:422
1182199181cyclictest991850irq/53-eth0-rx-20:46:412
1182199181cyclictest991850irq/53-eth0-rx-20:40:272
1182199181cyclictest991850irq/53-eth0-rx-00:31:352
1182199181cyclictest12850irq/42-ahci19:20:552
1182199181cyclictest115050irq/18-i801_smb23:00:232
11809991816cyclictest15934-21ssh23:04:257
11806991816cyclictest2308-21snmpd19:14:224
1180599183cyclictest0-21swapper/122:20:011
11822991716cyclictest0-21swapper/1119:25:583
11821991716cyclictest28298-21munin-node20:55:282
11821991716cyclictest0-21swapper/1022:30:382
11821991716cyclictest0-21swapper/1019:30:082
1182199170cyclictest991850irq/53-eth0-rx-23:05:082
1182199170cyclictest991850irq/53-eth0-rx-22:45:112
1182199170cyclictest991850irq/53-eth0-rx-22:35:312
1182199170cyclictest991850irq/53-eth0-rx-21:45:062
1182199170cyclictest991850irq/53-eth0-rx-21:30:092
1182199170cyclictest991850irq/53-eth0-rx-21:10:402
1182199170cyclictest991850irq/53-eth0-rx-20:31:282
1182199170cyclictest991850irq/53-eth0-rx-20:04:222
1182199170cyclictest991850irq/53-eth0-rx-19:50:502
1182199170cyclictest991850irq/53-eth0-rx-19:25:182
1182199170cyclictest991850irq/53-eth0-rx-19:10:452
1182199170cyclictest991850irq/53-eth0-rx-00:25:172
1182199170cyclictest991850irq/53-eth0-rx-00:10:072
1182199170cyclictest95252sleep1019:45:472
1182199170cyclictest66072chrt20:27:532
1182199170cyclictest59082chrt19:41:112
1182199170cyclictest317862sleep1019:35:102
1182199170cyclictest315382sleep1020:16:032
1182199170cyclictest278912sleep1020:11:022
1182199170cyclictest247192sleep1020:50:552
1182199170cyclictest235672sleep1020:05:262
1182199170cyclictest235672sleep1020:05:252
1182199170cyclictest200212chrt19:15:562
1182199170cyclictest147512sleep1019:55:132
1182199170cyclictest12850irq/42-ahci20:20:172
1182199170cyclictest12850irq/42-ahci00:20:042
1182199170cyclictest123742sleep1020:35:172
1182199170cyclictest123742sleep1020:35:162
1181899170cyclictest0-21swapper/720:23:089
11809991715cyclictest15328-21ssh23:30:087
11809991715cyclictest1235-21ssh00:35:297
11822991615cyclictest13304-1kworker/11:0H20:10:013
1181899165cyclictest0-21swapper/719:15:009
1181899164cyclictest0-21swapper/723:43:089
1181899164cyclictest0-21swapper/723:43:079
1181899164cyclictest0-21swapper/722:30:019
11809991615cyclictest11522-21qemu-kvm19:14:117
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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