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2026-06-10 - 15:55
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Wed Jun 10, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
272282216187,19sleep30-21swapper/307:05:593
272282216187,19sleep30-21swapper/307:05:593
273602208174,23sleep10-21swapper/107:07:411
273602208174,23sleep10-21swapper/107:07:411
273862202168,22sleep20-21swapper/207:08:032
273862202168,22sleep20-21swapper/207:08:032
273022202169,21sleep00-21swapper/007:06:570
273022202169,21sleep00-21swapper/007:06:560
3236121720,6sleep02783899cyclictest11:35:260
132021390,5sleep22784099cyclictest10:35:182
132021390,5sleep22784099cyclictest10:35:182
1510321310,3sleep22784099cyclictest09:55:272
2754626853,8sleep30-21swapper/307:10:013
150782610,3sleep30-21swapper/312:05:293
69022530,6sleep02783899cyclictest10:45:230
196662520,1sleep30-21swapper/311:10:223
2783899510,14cyclictest19215-21wc07:55:230
27839994815,12cyclictest20596-21kworker/1:207:16:241
50798470,9rtkit-daemon0-21swapper/110:10:201
2783999460,2cyclictest0-21swapper/110:33:431
27838994539,3cyclictest15489-21sh10:00:000
2784099440,2cyclictest7013-21/usr/sbin/munin07:30:232
138491430,0ptp4l401ktimersoftd/312:36:203
27841994029,9cyclictest41-21ksoftirqd/311:40:173
27839994035,3cyclictest13108-21cron08:50:011
2783899400,7cyclictest4149-21irqstats10:40:180
27841993934,3cyclictest41-21ksoftirqd/309:15:013
27839993917,19cyclictest16079-21cstates12:10:131
27840993832,4cyclictest33-21ksoftirqd/212:00:002
2784099380,37cyclictest0-21swapper/208:05:232
27839993815,21cyclictest14885-21kworker/1:112:25:051
2783899380,7cyclictest4008-21iostat_ios11:45:180
2783899380,7cyclictest4008-21iostat_ios11:45:180
2783899380,7cyclictest27424-21python09:15:240
138491380,0ptp4l401ktimersoftd/311:50:213
27841993732,3cyclictest41-21ksoftirqd/310:25:003
27841993732,3cyclictest41-21ksoftirqd/308:00:003
27841993719,15cyclictest15477-21cron10:00:003
27840993716,19cyclictest0-21swapper/207:35:342
27840993716,19cyclictest0-21swapper/207:35:342
2784099370,35cyclictest27982-21cron11:30:002
2783999370,1cyclictest0-21swapper/107:30:541
27838993731,4cyclictest9-21ksoftirqd/010:56:180
2783899370,8cyclictest16389-21df08:55:130
2783899370,7cyclictest27779-21sshd11:27:350
2783899370,7cyclictest24314-21irqstats11:20:190
27841993631,3cyclictest41-21ksoftirqd/312:29:553
27841993631,3cyclictest41-21ksoftirqd/307:40:003
27841993631,3cyclictest41-21ksoftirqd/307:40:003
27841993630,4cyclictest41-21ksoftirqd/311:56:113
27841993630,4cyclictest41-21ksoftirqd/309:03:453
27841993630,4cyclictest41-21ksoftirqd/308:12:383
27841993630,3cyclictest41-21ksoftirqd/310:10:173
2784099367,27cyclictest22582-21timedrift12:20:242
27840993630,4cyclictest33-21ksoftirqd/208:34:072
27840993630,4cyclictest33-21ksoftirqd/208:20:512
27839993630,4cyclictest25-21ksoftirqd/108:50:341
27839993630,4cyclictest25-21ksoftirqd/107:40:101
27839993629,5cyclictest25-21ksoftirqd/111:00:281
27839993629,5cyclictest25-21ksoftirqd/108:33:461
27839993629,4cyclictest25-21ksoftirqd/111:45:001
27839993615,19cyclictest14885-21kworker/1:112:09:441
2783999361,16cyclictest27575-21grep11:25:271
27838993630,4cyclictest9-21ksoftirqd/009:47:340
138491360,0ptp4l401ktimersoftd/312:20:183
138491360,0ptp4l401ktimersoftd/307:45:283
138491360,0ptp4l401ktimersoftd/307:15:153
50798350,2rtkit-daemon506-21rtkit-daemon12:34:222
27841993529,4cyclictest41-21ksoftirqd/311:25:093
27840993530,3cyclictest33-21ksoftirqd/211:35:122
27840993530,3cyclictest33-21ksoftirqd/207:55:002
27840993529,4cyclictest33-21ksoftirqd/212:38:532
27840993529,4cyclictest33-21ksoftirqd/210:53:442
27840993529,4cyclictest33-21ksoftirqd/210:23:022
27840993529,4cyclictest33-21ksoftirqd/209:46:522
27840993529,4cyclictest33-21ksoftirqd/209:30:102
27840993529,4cyclictest33-21ksoftirqd/209:08:412
27840993528,4cyclictest33-21ksoftirqd/212:00:072
27839993530,3cyclictest25-21ksoftirqd/111:38:321
27839993529,4cyclictest25-21ksoftirqd/112:36:291
27839993529,4cyclictest25-21ksoftirqd/110:35:331
27839993529,4cyclictest25-21ksoftirqd/110:35:331
27839993529,4cyclictest25-21ksoftirqd/110:23:501
27839993529,4cyclictest25-21ksoftirqd/108:25:401
27839993529,4cyclictest25-21ksoftirqd/108:12:521
27839993528,5cyclictest25-21ksoftirqd/110:07:371
27838993530,3cyclictest9-21ksoftirqd/008:03:280
27838993529,4cyclictest9-21ksoftirqd/012:36:270
27838993529,4cyclictest9-21ksoftirqd/011:19:010
27838993529,4cyclictest9-21ksoftirqd/009:34:470
27838993529,4cyclictest9-21ksoftirqd/009:26:240
27838993528,4cyclictest9-21ksoftirqd/008:40:430
138491350,0ptp4l401ktimersoftd/310:55:393
138491350,0ptp4l401ktimersoftd/310:20:003
138491350,0ptp4l401ktimersoftd/310:05:163
138491350,0ptp4l401ktimersoftd/308:40:153
27841993429,3cyclictest41-21ksoftirqd/311:15:183
27841993429,3cyclictest41-21ksoftirqd/308:47:183
27841993428,4cyclictest41-21ksoftirqd/310:51:323
27841993428,4cyclictest41-21ksoftirqd/309:41:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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