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2026-06-19 - 17:58
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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 Fri Jun 19, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591221175,35phc2sys0-21swapper/307:07:583
56882202168,23sleep20-21swapper/207:06:102
56672202168,22sleep10-21swapper/107:05:541
56712200168,21sleep00-21swapper/007:05:560
223421590,6sleep2628599cyclictest10:15:132
138491620,1ptp4l401ktimersoftd/310:05:053
138491610,1ptp4l401ktimersoftd/311:15:153
260622570,2sleep20-21swapper/211:00:262
138491570,1ptp4l401ktimersoftd/312:11:163
628499474,5cyclictest9352-21latency_hist10:30:011
628499474,5cyclictest9352-21latency_hist10:30:011
628599461,2cyclictest0-21swapper/209:25:232
628599461,2cyclictest0-21swapper/209:25:232
8952450,3sleep2321ktimersoftd/210:10:242
628599450,2cyclictest0-21swapper/209:40:232
6284994533,10cyclictest25-21ksoftirqd/108:30:001
6284994533,10cyclictest25-21ksoftirqd/108:30:001
6286994337,3cyclictest41-21ksoftirqd/311:00:003
6283994337,4cyclictest19068-21cron09:45:000
6284994236,3cyclictest19069-21cron09:45:001
6286994135,4cyclictest41-21ksoftirqd/308:30:003
6286994135,4cyclictest41-21ksoftirqd/308:30:003
138491410,0ptp4l401ktimersoftd/307:40:213
628499400,8cyclictest20356-21ssh08:40:261
138491400,0ptp4l401ktimersoftd/309:35:183
6283993933,3cyclictest9-21ksoftirqd/009:40:010
135191390,1getstats0-21swapper/311:54:083
6284993814,3cyclictest25-21ksoftirqd/112:37:121
6284993814,3cyclictest25-21ksoftirqd/112:37:111
628499380,7cyclictest2351-21df10:15:121
6283993831,4cyclictest9-21ksoftirqd/007:20:000
138491380,0ptp4l401ktimersoftd/308:45:223
6286993731,4cyclictest41-21ksoftirqd/311:42:523
6285993730,5cyclictest33-21ksoftirqd/208:35:002
628599370,36cyclictest0-21swapper/212:08:042
6284993731,3cyclictest25-21ksoftirqd/110:30:171
6284993730,5cyclictest25-21ksoftirqd/111:01:421
628499370,7cyclictest31853-21if_enp1s008:00:171
628499370,7cyclictest22499-21iostat_ios09:50:191
6283993731,4cyclictest9-21ksoftirqd/011:29:410
6283993731,3cyclictest13454-21cron07:25:010
6286993630,4cyclictest41-21ksoftirqd/311:12:073
6286993630,4cyclictest41-21ksoftirqd/308:10:583
6286993629,4cyclictest41-21ksoftirqd/307:10:083
6285993631,4cyclictest33-21ksoftirqd/209:11:322
6285993631,3cyclictest33-21ksoftirqd/209:23:342
6285993630,4cyclictest33-21ksoftirqd/211:53:182
6285993630,4cyclictest33-21ksoftirqd/211:13:382
6285993630,4cyclictest33-21ksoftirqd/210:43:172
6285993630,4cyclictest33-21ksoftirqd/209:52:592
6285993630,4cyclictest33-21ksoftirqd/208:57:502
6285993630,4cyclictest33-21ksoftirqd/208:57:502
6285993630,4cyclictest33-21ksoftirqd/208:42:542
6285993630,4cyclictest33-21ksoftirqd/208:17:472
6285993630,4cyclictest33-21ksoftirqd/207:59:212
6285993630,4cyclictest33-21ksoftirqd/207:59:212
6285993630,4cyclictest33-21ksoftirqd/207:52:042
6285993630,4cyclictest33-21ksoftirqd/207:25:592
6284993631,3cyclictest11563-21grep11:40:001
6284993630,4cyclictest25-21ksoftirqd/110:22:461
6284993629,4cyclictest25-21ksoftirqd/108:05:021
6283993631,3cyclictest18916-21sshd10:49:110
6283993630,4cyclictest9-21ksoftirqd/010:28:430
6283993630,4cyclictest9-21ksoftirqd/010:28:420
6283993630,4cyclictest9-21ksoftirqd/009:32:120
6283993630,4cyclictest9-21ksoftirqd/008:14:250
6283993629,5cyclictest9-21ksoftirqd/011:56:170
6283993629,4cyclictest9-21ksoftirqd/011:20:300
6283993629,4cyclictest9-21ksoftirqd/009:28:210
6283993629,4cyclictest9-21ksoftirqd/009:28:210
138491360,0ptp4l401ktimersoftd/311:45:183
138491360,0ptp4l401ktimersoftd/307:50:013
6286993529,4cyclictest41-21ksoftirqd/309:34:543
6286993529,4cyclictest41-21ksoftirqd/307:37:333
6285993529,4cyclictest33-21ksoftirqd/211:36:492
6285993529,4cyclictest33-21ksoftirqd/210:08:192
6285993529,4cyclictest33-21ksoftirqd/208:37:422
6285993528,5cyclictest33-21ksoftirqd/210:53:482
6284993529,4cyclictest25-21ksoftirqd/111:34:391
6284993529,4cyclictest25-21ksoftirqd/109:02:231
6284993529,4cyclictest25-21ksoftirqd/107:26:351
6283993529,4cyclictest9-21ksoftirqd/012:23:440
6283993529,4cyclictest9-21ksoftirqd/011:39:000
6283993529,4cyclictest9-21ksoftirqd/011:34:060
6283993529,4cyclictest9-21ksoftirqd/010:18:000
6283993529,4cyclictest9-21ksoftirqd/010:06:410
6283993529,4cyclictest9-21ksoftirqd/009:53:210
6283993529,4cyclictest9-21ksoftirqd/007:34:320
6283993528,5cyclictest9-21ksoftirqd/012:35:560
6283993528,5cyclictest9-21ksoftirqd/012:35:560
138491350,0ptp4l401ktimersoftd/310:00:143
6286993430,2cyclictest41-21ksoftirqd/308:20:003
6286993428,4cyclictest41-21ksoftirqd/311:55:393
6286993428,4cyclictest41-21ksoftirqd/309:56:293
6286993428,4cyclictest41-21ksoftirqd/307:30:003
6286993428,4cyclictest41-21ksoftirqd/307:23:043
6286993427,4cyclictest41-21ksoftirqd/312:15:583
6286993427,4cyclictest41-21ksoftirqd/309:52:523
6285993429,3cyclictest33-21ksoftirqd/212:00:042
6285993429,3cyclictest33-21ksoftirqd/211:57:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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