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2025-11-16 - 03:28
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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 Sat Nov 15, 2025 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1817322240,16sleep10-21swapper/107:05:141
198492200166,23sleep20-21swapper/207:06:202
137191200166,23phc2sys0-21swapper/307:09:553
200912196163,22sleep00-21swapper/007:09:270
1097921300,3sleep12043799cyclictest10:10:161
2043699670,22cyclictest11428-21fschecks_count09:05:180
20436996512,18cyclictest5623-21sed07:45:200
2043699649,24cyclictest16862-21cstates11:30:180
2043699640,21cyclictest15678-21mailstats11:25:270
2043699620,21cyclictest21015-21grep09:25:130
2043699611,22cyclictest661-21grep09:50:140
2043699610,21cyclictest28511-21/usr/sbin/munin11:55:110
2043699600,21cyclictest32420-21cpuspeed07:35:130
2043699600,20cyclictest7687-21basename07:50:190
20438995920,11cyclictest33-21ksoftirqd/211:30:002
2043699591,21cyclictest12231-21/usr/sbin/munin11:20:160
2043699590,21cyclictest21007-21basename07:10:160
2043699590,20cyclictest26695-21idleruntime11:50:200
2043699580,23cyclictest4407-21if_enp4s008:50:170
2043699580,22cyclictest19789-21/usr/sbin/munin09:20:260
177542570,5sleep125-21ksoftirqd/110:25:001
20438995526,4cyclictest33-21ksoftirqd/209:25:012
20438995521,4cyclictest33-21ksoftirqd/207:25:012
20438995426,7cyclictest33-21ksoftirqd/209:20:002
20438995323,7cyclictest33-21ksoftirqd/210:00:012
20438995319,6cyclictest33-21ksoftirqd/209:30:272
20438995315,10cyclictest33-21ksoftirqd/212:15:262
20437995311,40cyclictest1608-21kworker/1:207:20:471
20438995226,7cyclictest33-21ksoftirqd/208:25:232
20438995223,7cyclictest33-21ksoftirqd/208:10:242
20438995223,4cyclictest33-21ksoftirqd/210:00:292
20438995220,6cyclictest33-21ksoftirqd/208:45:212
20438995220,4cyclictest33-21ksoftirqd/212:00:232
20438995220,4cyclictest33-21ksoftirqd/212:00:232
20438995125,6cyclictest33-21ksoftirqd/211:45:222
20438995124,3cyclictest33-21ksoftirqd/207:30:222
20438995122,4cyclictest33-21ksoftirqd/208:40:252
20438995122,4cyclictest33-21ksoftirqd/207:10:192
20438995121,8cyclictest33-21ksoftirqd/211:20:132
20438995022,4cyclictest33-21ksoftirqd/209:10:172
20438995019,4cyclictest33-21ksoftirqd/211:05:302
20438995013,6cyclictest33-21ksoftirqd/210:10:002
20438994923,7cyclictest33-21ksoftirqd/207:25:252
20438994921,4cyclictest33-21ksoftirqd/207:35:152
20438994917,7cyclictest33-21ksoftirqd/208:20:002
20438994916,4cyclictest33-21ksoftirqd/212:30:202
20438994912,8cyclictest33-21ksoftirqd/209:40:302
173192490,2sleep10-21swapper/108:10:181
20438994823,7cyclictest33-21ksoftirqd/207:50:002
20438994822,7cyclictest33-21ksoftirqd/212:35:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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