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2025-10-20 - 10:46
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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 Mon Oct 20, 2025 00:46:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122501130irq/42-ahci0-21swapper/219:09:094
22099210894sleep40-21swapper/419:05:406
30663501040irq/52-eth0-rx-0-21swapper/319:08:575
23539210493sleep80-21swapper/819:07:3310
12250980irq/42-ahci0-21swapper/119:09:071
3066350890irq/52-eth0-rx-0-21swapper/719:06:299
3066350880irq/52-eth0-rx-0-21swapper/519:05:387
129950800irq/18-parport00-21swapper/919:06:0911
2356927971sleep100-21swapper/1019:07:582
2147726553sleep00-21swapper/019:05:250
2355726354sleep110-21swapper/1119:07:473
2353425853sleep60-21swapper/619:07:308
2387499310cyclictest0-21swapper/021:23:560
3066350280irq/52-eth0-rx-0-21swapper/321:24:095
2391499181cyclictest761ksoftirqd/921:45:0111
2391499181cyclictest28509-21kworker/9:100:37:3311
2391499181cyclictest16018-1kworker/9:1H22:19:3711
2391499181cyclictest0-21swapper/920:56:2711
2391499181cyclictest0-21swapper/920:33:4511
23913991816cyclictest6838-21diskstats19:30:1510
23913991816cyclictest5286-21snmp_easybox.os22:45:1210
23913991816cyclictest29896-21snmp_rack3slot921:25:1410
23913991816cyclictest18423-21users20:56:3210
23913991816cyclictest16528-21snmp_rack3slot922:00:2710
23874991817cyclictest0-21swapper/022:10:260
2392399170cyclictest0-21swapper/1122:10:433
23919991716cyclictest0-21swapper/1022:15:402
23919991715cyclictest29672-21python00:00:292
23914991716cyclictest0-21swapper/920:26:4411
2391499170cyclictest761ksoftirqd/923:20:3211
2391499170cyclictest761ksoftirqd/922:50:0011
2391499170cyclictest761ksoftirqd/922:25:1811
2391499170cyclictest761ksoftirqd/922:10:0211
2391499170cyclictest761ksoftirqd/921:41:1011
2391499170cyclictest761ksoftirqd/921:41:0911
2391499170cyclictest761ksoftirqd/920:18:1011
2391499170cyclictest761ksoftirqd/919:30:0211
2391499170cyclictest761ksoftirqd/900:30:1911
2391499170cyclictest761ksoftirqd/900:20:1311
2391499170cyclictest3171-21snmp_rack3slot919:25:1611
2391499170cyclictest28858-21cstates_1121:20:1711
2391499170cyclictest25673-21python23:10:3211
2391499170cyclictest25449-21snmp_easybox.os22:20:3111
2391499170cyclictest16018-1kworker/9:1H20:08:2311
2391499170cyclictest0-21swapper/922:00:5711
2391499170cyclictest0-21swapper/921:26:3111
2391499170cyclictest0-21swapper/920:20:2611
2391499170cyclictest0-21swapper/919:45:1511
2391499170cyclictest0-21swapper/919:35:3311
2391499170cyclictest0-21swapper/919:21:0511
23913991716cyclictest8930-21snmp_easybox.os22:50:1110
23913991716cyclictest5298-21snmp_rack3slot900:11:5210
23913991716cyclictest32672-21snmp_easybox.os20:20:2410
23913991716cyclictest29992-21snmp_rack3slot923:17:0510
23913991716cyclictest24953-21snmp_rack3slot921:10:1710
23913991716cyclictest22698-21snmp_rack3slot923:06:4910
23913991716cyclictest19399-21snmp_easybox.os21:00:1510
23913991716cyclictest17718-21snmp_rack3slot919:45:1710
23913991716cyclictest1603-21snmp_rack3slot900:07:1510
23913991715cyclictest5068-21snmp_rack3slot921:40:2010
23913991715cyclictest5068-21snmp_rack3slot921:40:2010
23913991715cyclictest31335-21snmp_rack3slot922:30:2610
23913991715cyclictest29161-21snmp_rack3slot922:25:2510
23913991715cyclictest28382-21snmp_rack3slot919:15:1410
23913991715cyclictest25424-21iostat_ios23:55:2210
23913991715cyclictest2542-21snmp_easybox.os20:25:1410
23913991715cyclictest25253-21snmp_rack3slot919:10:2910
23913991715cyclictest23695-21munin-run00:40:0010
23913991715cyclictest19746-21snmp_rack3slot900:30:4910
23913991715cyclictest16698-21snmp_rack3slot923:45:1310
23913991715cyclictest14800-21snmp_rack3slot920:51:2910
23913991715cyclictest11262-21iostat00:20:2110
2390499173cyclictest0-21swapper/621:20:018
2390499170cyclictest0-21swapper/600:29:558
2392399160cyclictest31060-21cstates22:30:153
23919991615cyclictest30970-1kworker/10:2H21:08:402
23919991615cyclictest28473-1kworker/10:1H20:15:502
23919991615cyclictest1962-1kworker/10:2H19:21:052
23919991614cyclictest12227-21smartctl21:51:142
23919991614cyclictest12227-21smartctl21:51:132
23919991614cyclictest11477-21python23:35:302
23919991614cyclictest11121-21python22:51:032
23914991615cyclictest761ksoftirqd/923:40:1411
23914991615cyclictest761ksoftirqd/923:20:0111
23914991615cyclictest761ksoftirqd/921:35:1311
23914991615cyclictest761ksoftirqd/919:40:4111
23914991615cyclictest0-21swapper/923:27:1411
23914991615cyclictest0-21swapper/923:06:5311
23914991615cyclictest0-21swapper/921:50:5911
23914991615cyclictest0-21swapper/921:50:5811
23914991615cyclictest0-21swapper/920:35:2311
23914991615cyclictest0-21swapper/920:02:4511
23914991615cyclictest0-21swapper/919:15:4711
23914991615cyclictest0-21swapper/900:12:1711
23914991615cyclictest0-21swapper/900:05:3011
23914991614cyclictest27243-21taskset21:15:3811
2391499160cyclictest0-21swapper/923:55:2511
23913991615cyclictest8848-21snmp_rack3slot900:15:4910
23913991615cyclictest32514-21snmp_rack3slot923:20:2210
23913991615cyclictest28969-21snmp_easybox.os21:20:2710
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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