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2025-10-23 - 02:50
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 20 highest latencies:
System rackbslot2.osadl.org (updated Wed Oct 22, 2025 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34288442239210,19sleep10-21swapper/107:05:571
34290602238182,20sleep20-21swapper/207:08:442
34291182235205,20sleep30-21swapper/307:09:293
34289472229199,19sleep00-21swapper/007:07:180
3429316997975,2cyclictest3667492-13chrome11:45:010
342931699672,64cyclictest3485317-21kworker/u8:0+efi_rts_wq08:24:020
35334562560,1chrt3533432-21/usr/share/muni09:10:011
3429326995654,1cyclictest3346753-1kworker/3:1H+kblockd10:55:053
342932099522,50cyclictest3485317-21kworker/u8:0+efi_rts_wq08:24:021
3429316995136,13cyclictest3511926-21chrome08:45:010
3429322995047,2cyclictest3600586-21awk10:25:162
3429316995036,12cyclictest3615616-21chrome10:45:010
3429320994841,6cyclictest3585221-21/usr/share/muni10:10:011
3429322994741,4cyclictest3446912-21latency_hist07:30:002
3429320994740,5cyclictest3663630-21ntpq11:40:041
3429320994740,5cyclictest3663630-21ntpq11:40:041
3429326994541,2cyclictest3667516-21ThreadPoolForeg11:45:013
3429316994542,2cyclictest3425818-21kworker/u8:2+flush-179:007:10:310
3429326994432,11cyclictest3346753-1kworker/3:1H+kblockd08:40:303
3429322994439,3cyclictest3460030-21CacheThread_Blo07:45:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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