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2025-10-24 - 19:42
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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
Characteristics of the 50 highest latencies:
System rackdslot3.osadl.org (updated Fri Oct 24, 2025 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242862247201,36sleep10-21swapper/107:09:581
242542203169,22sleep00-21swapper/007:09:330
241922203170,22sleep20-21swapper/207:08:552
240282203168,23sleep30-21swapper/307:06:473
1752221860,4sleep12457999cyclictest10:15:161
383521620,1sleep00-21swapper/010:55:150
24580996413,12cyclictest23432-21tail10:25:282
24580996410,11cyclictest14906-21cstates10:10:152
24580996314,12cyclictest5402-21tail10:55:282
24580996310,16cyclictest20989-21if_enp4s011:30:212
24580996211,11cyclictest9673-21cat07:45:132
24580996210,10cyclictest30106-21cstates09:35:152
132691620,2getstats0-21swapper/309:15:163
2458099619,15cyclictest12922-21taskset11:14:022
24580996111,17cyclictest25635-21cat10:30:272
24580996111,17cyclictest25635-21cat10:30:272
24580996012,15cyclictest27500-21sensors08:20:262
24580996011,11cyclictest610-21vmstat10:45:282
2458199590,3cyclictest212612chrt10:21:443
2458199590,2cyclictest165222sleep312:29:183
2458199580,2cyclictest56932sleep310:57:553
2458099588,16cyclictest24589-21runrttasks09:24:182
24580995810,12cyclictest18020-21phc2sys12:30:242
24580995711,17cyclictest17567-21sed08:00:212
24580995711,10cyclictest25701-21ls07:10:212
24372570,4sleep22436-21cat08:35:282
2458099568,14cyclictest17294-21ls11:20:282
24580995610,16cyclictest0-21swapper/208:18:152
24580995610,10cyclictest29619-21cut10:40:192
79402550,4sleep07941-21mailstats07:40:220
286702550,3sleep228674-21unixbench_singl07:15:252
1371915523,10phc2sys41-21ksoftirqd/308:50:163
207252540,2sleep20-21swapper/212:35:262
132691540,1getstats0-21swapper/309:05:163
2458099539,14cyclictest450-21ps09:40:192
210092530,2sleep00-21swapper/011:30:200
2458099529,10cyclictest4847-21timerwakeupswit08:40:282
24580995211,13cyclictest8048-21apt-get07:40:262
283362500,1sleep00-21swapper/009:30:180
2458099499,16cyclictest29550-21ls08:25:212
24580994910,15cyclictest3967-21ls12:00:302
24580994910,15cyclictest3967-21ls12:00:302
2458199480,3cyclictest7096-21/usr/sbin/munin12:10:163
2458199480,3cyclictest438-21awk07:25:223
24580994811,14cyclictest7786-21ls11:00:292
2458199470,3cyclictest26030-21chrt10:31:593
2458199470,3cyclictest26030-21chrt10:31:593
24580994710,16cyclictest8695-21ls12:10:262
136991460,1ptp4l14291-21meminfo11:15:233
59298450,2rtkit-daemon591-21rtkit-daemon09:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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