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2025-12-05 - 11:41
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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 Dec 05, 2025 00:46:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12132210894sleep90-21swapper/919:07:2811
12089210793sleep80-21swapper/819:06:5110
123702106101sleep10-21swapper/119:09:571
12013210591sleep100-21swapper/1019:05:532
12028210491sleep110-21swapper/1119:06:073
12101210391sleep60-21swapper/619:07:028
122501020irq/42-ahci0-21swapper/219:08:574
3066350920irq/52-eth0-rx-0-21swapper/419:05:116
3066450850irq/53-eth0-tx-0-21swapper/319:05:285
3066350690irq/52-eth0-rx-0-21swapper/519:06:427
1200226554sleep00-21swapper/019:05:440
1201026453sleep70-21swapper/719:05:509
12517993013cyclictest811rcuc/1021:50:012
1251799258cyclictest831ksoftirqd/1020:31:162
1251799258cyclictest831ksoftirqd/1019:57:002
1247699230cyclictest0-21swapper/019:10:270
12476992120cyclictest31ksoftirqd/022:20:000
12517991817cyclictest831ksoftirqd/1022:25:162
12517991817cyclictest831ksoftirqd/1020:15:132
12517991817cyclictest0-21swapper/1022:02:242
12517991817cyclictest0-21swapper/1019:25:322
1251799181cyclictest831ksoftirqd/1023:35:012
1251799181cyclictest831ksoftirqd/1023:15:182
1251799181cyclictest831ksoftirqd/1022:30:242
1251799181cyclictest831ksoftirqd/1022:20:162
1251799181cyclictest831ksoftirqd/1020:35:162
1251799181cyclictest831ksoftirqd/1019:35:322
1251799181cyclictest831ksoftirqd/1019:20:152
1251799181cyclictest831ksoftirqd/1000:25:162
1251799181cyclictest831ksoftirqd/1000:15:012
1251799181cyclictest831ksoftirqd/1000:15:012
1251799181cyclictest831ksoftirqd/1000:10:152
1251799181cyclictest811rcuc/1023:40:302
1251799181cyclictest3066350irq/52-eth0-rx-22:10:162
1251799181cyclictest12250irq/42-ahci22:55:282
1251799181cyclictest12250irq/42-ahci21:09:422
1251799181cyclictest12250irq/42-ahci20:49:262
1251799180cyclictest129672sleep1019:10:052
1251699181cyclictest0-21swapper/921:50:1511
1251699181cyclictest0-21swapper/921:30:3911
1251699181cyclictest0-21swapper/921:30:3911
1251699181cyclictest0-21swapper/920:43:4611
12515991816cyclictest9099-21perl20:30:2210
12515991816cyclictest557-21snmp_easybox.os20:20:1210
12515991816cyclictest32636-21snmp_rack3slot919:35:1310
12515991816cyclictest30175-21df_inode20:15:1310
12515991816cyclictest27992-21snmp_rack3slot922:25:1610
12515991816cyclictest25299-21snmp_rack3slot920:51:1610
12515991816cyclictest22401-21df_inode19:20:1210
12515991816cyclictest21508-21diskstats23:45:1510
12515991816cyclictest16152-21munin-node21:25:1510
12515991816cyclictest15834-21snmp_rack3slot922:51:2510
12515991816cyclictest11603-21snmp_rack3slot922:00:3610
12515991816cyclictest11324-21iostat_ios23:30:2110
12514991816cyclictest842650kworker/u24:120:20:209
1247699180cyclictest0-21swapper/019:28:030
5999170watchdog/70-21swapper/720:45:039
1251899170cyclictest0-21swapper/1119:10:333
12517991716cyclictest831ksoftirqd/1000:00:322
12517991716cyclictest22867-21kworker/10:121:50:182
12517991716cyclictest20230-21snmp_rack3slot921:30:202
12517991716cyclictest20230-21snmp_rack3slot921:30:202
12517991716cyclictest0-21swapper/1022:15:152
12517991716cyclictest0-21swapper/1021:40:272
12517991716cyclictest0-21swapper/1000:05:122
1251799170cyclictest88812sleep1023:25:342
1251799170cyclictest83912sleep1021:15:082
1251799170cyclictest83912sleep1021:15:082
1251799170cyclictest831ksoftirqd/1023:45:002
1251799170cyclictest831ksoftirqd/1023:20:132
1251799170cyclictest831ksoftirqd/1021:35:172
1251799170cyclictest831ksoftirqd/1021:10:112
1251799170cyclictest831ksoftirqd/1021:00:232
1251799170cyclictest831ksoftirqd/1020:25:142
1251799170cyclictest831ksoftirqd/1020:05:242
1251799170cyclictest831ksoftirqd/1019:15:152
1251799170cyclictest831ksoftirqd/1000:30:022
1251799170cyclictest831ksoftirqd/1000:30:012
1251799170cyclictest811rcuc/1020:10:142
1251799170cyclictest79852sleep1021:55:592
1251799170cyclictest78872chrt22:40:282
1251799170cyclictest53632sleep1019:40:202
1251799170cyclictest42552sleep1022:35:302
1251799170cyclictest35682sleep1020:22:492
1251799170cyclictest309692sleep1023:59:142
1251799170cyclictest3066350irq/52-eth0-rx-22:50:082
1251799170cyclictest3066350irq/52-eth0-rx-21:20:152
1251799170cyclictest3066350irq/52-eth0-rx-19:30:242
1251799170cyclictest3066350irq/52-eth0-rx-00:35:342
1251799170cyclictest306202sleep1023:14:322
1251799170cyclictest271592sleep1023:51:492
1251799170cyclictest260922sleep1020:55:052
1251799170cyclictest254792sleep1020:53:402
1251799170cyclictest239212sleep1023:05:072
1251799170cyclictest231662chrt23:01:442
1251799170cyclictest213262sleep1020:02:592
1251799170cyclictest156962sleep1021:25:082
1251799170cyclictest153212sleep1022:06:022
1251799170cyclictest146702sleep1000:20:172
1251799170cyclictest140012sleep1019:52:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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