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2026-05-31 - 09:06
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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 rackdslot3.osadl.org (updated Sun May 31, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81302206173,22sleep00-21swapper/019:08:470
80402205172,22sleep30-21swapper/319:07:393
79462203170,22sleep20-21swapper/219:06:332
79452203169,22sleep10-21swapper/119:06:321
82232132105,15sleep00-21swapper/019:10:010
325452780,2sleep10-21swapper/123:20:251
851599760,74cyclictest0-21swapper/122:20:531
8515997511,62cyclictest0-21swapper/121:46:131
851599720,70cyclictest0-21swapper/120:35:331
139391650,1ptp4l401ktimersoftd/319:30:233
137662610,1sleep00-21swapper/019:20:150
164152600,4sleep016411-21latency_hist20:35:010
47992560,3sleep2311rcuc/222:25:142
851499551,4cyclictest24547-21runrttasks19:40:290
305482550,2sleep30-21swapper/322:10:183
30042550,4sleep03009-21irqrtprio22:20:180
851699516,6cyclictest12517-21awk23:45:282
851699512,9cyclictest12964-21needreboot20:25:232
8516995118,5cyclictest33-21ksoftirqd/222:02:492
851699510,8cyclictest13657-21iostat_ios21:35:172
851499511,19cyclictest0-21swapper/022:11:430
851699496,6cyclictest7752-21irqrtprio20:15:182
8516994919,3cyclictest33-21ksoftirqd/221:12:272
851699474,6cyclictest9246-21cpu22:35:122
851699474,5cyclictest33-21ksoftirqd/221:50:192
851699470,18cyclictest12977-21date21:35:002
851699460,9cyclictest11793-21cut20:25:002
851499463,20cyclictest1317-21runrttasks20:01:100
851699454,6cyclictest6819-21/usr/sbin/munin22:30:132
851499442,19cyclictest0-21swapper/019:51:420
139391440,1ptp4l401ktimersoftd/321:32:583
851699435,6cyclictest26955-21cut23:10:182
851599430,42cyclictest0-21swapper/122:26:341
139391430,0ptp4l401ktimersoftd/320:05:213
8516994220,5cyclictest33-21ksoftirqd/220:53:302
8516994218,5cyclictest33-21ksoftirqd/220:01:182
8516994217,5cyclictest33-21ksoftirqd/221:29:152
8516994217,5cyclictest33-21ksoftirqd/219:34:062
851499429,19cyclictest1317-21runrttasks20:48:280
139391420,0ptp4l401ktimersoftd/320:35:263
8517994136,3cyclictest41-21ksoftirqd/319:20:003
851699416,6cyclictest20373-21systemctl20:40:232
851699416,5cyclictest33-21ksoftirqd/223:25:152
8516994120,6cyclictest33-21ksoftirqd/219:53:202
8516994119,5cyclictest33-21ksoftirqd/222:59:542
139391410,1ptp4l401ktimersoftd/300:31:493
8516994019,5cyclictest33-21ksoftirqd/220:46:552
851499409,18cyclictest1317-21runrttasks22:44:020
8517993934,3cyclictest41-21ksoftirqd/320:00:013
8517993933,3cyclictest41-21ksoftirqd/321:20:003
8516993920,3cyclictest33-21ksoftirqd/219:20:022
8516993916,5cyclictest33-21ksoftirqd/220:07:012
851599399,28cyclictest0-21swapper/119:55:451
8515993911,27cyclictest0-21swapper/122:41:331
851699384,4cyclictest33-21ksoftirqd/220:38:572
851699381,6cyclictest33-21ksoftirqd/220:55:252
851599389,28cyclictest0-21swapper/120:05:431
139391380,0ptp4l401ktimersoftd/322:30:323
8517993733,3cyclictest41-21ksoftirqd/323:35:003
8517993733,3cyclictest41-21ksoftirqd/323:35:003
8517993733,2cyclictest41-21ksoftirqd/322:55:183
8517993733,2cyclictest41-21ksoftirqd/322:24:593
8517993733,2cyclictest41-21ksoftirqd/300:40:003
8517993732,3cyclictest41-21ksoftirqd/320:25:003
8517993731,4cyclictest41-21ksoftirqd/320:14:453
8517993731,3cyclictest41-21ksoftirqd/321:00:003
8516993718,3cyclictest33-21ksoftirqd/222:19:272
851699370,4cyclictest33-21ksoftirqd/200:25:122
851499373,21cyclictest7892-21seq21:23:270
851499371,3cyclictest13937-21taskset20:29:290
8517993631,3cyclictest41-21ksoftirqd/323:05:003
8517993631,3cyclictest41-21ksoftirqd/323:05:003
8517993631,3cyclictest41-21ksoftirqd/322:50:173
8517993631,3cyclictest41-21ksoftirqd/320:29:593
8517993631,3cyclictest41-21ksoftirqd/300:05:003
8517993630,4cyclictest41-21ksoftirqd/321:10:013
851699363,5cyclictest33-21ksoftirqd/222:22:112
8516993631,3cyclictest33-21ksoftirqd/223:42:322
8516993631,3cyclictest33-21ksoftirqd/222:05:152
851699362,4cyclictest33-21ksoftirqd/222:54:042
8515993630,4cyclictest25-21ksoftirqd/123:00:551
8515993630,4cyclictest25-21ksoftirqd/123:00:551
8515993630,4cyclictest25-21ksoftirqd/121:02:571
8515993629,5cyclictest25-21ksoftirqd/123:19:371
8515993629,5cyclictest25-21ksoftirqd/121:18:131
8515993629,5cyclictest25-21ksoftirqd/100:32:101
139391360,13ptp4l401ktimersoftd/300:05:273
8517993531,3cyclictest41-21ksoftirqd/321:10:183
8517993530,3cyclictest41-21ksoftirqd/300:20:173
8517993529,4cyclictest41-21ksoftirqd/322:18:413
8517993529,4cyclictest41-21ksoftirqd/321:02:283
8517993529,4cyclictest41-21ksoftirqd/319:52:593
8517993528,5cyclictest41-21ksoftirqd/323:10:003
8517993528,4cyclictest41-21ksoftirqd/319:41:393
851699354,5cyclictest33-21ksoftirqd/219:59:532
851699354,5cyclictest33-21ksoftirqd/219:19:512
851699354,4cyclictest33-21ksoftirqd/219:42:332
851699353,4cyclictest33-21ksoftirqd/219:26:362
851699352,5cyclictest33-21ksoftirqd/220:12:382
851699352,4cyclictest33-21ksoftirqd/222:46:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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