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2026-05-08 - 15:12
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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 May 08, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591207172,24phc2sys0-21swapper/319:09:073
319572201167,23sleep10-21swapper/119:05:071
14842201167,22sleep20-21swapper/219:06:212
17122200166,22sleep00-21swapper/019:09:080
949921440,6sleep0222799cyclictest21:30:290
138491610,1ptp4l401ktimersoftd/320:44:013
138491580,1ptp4l401ktimersoftd/321:55:153
310672550,1sleep00-21swapper/022:15:220
160792540,3sleep30-21swapper/323:55:253
250952500,5sleep09-21ksoftirqd/022:05:110
32362470,3sleep1241ktimersoftd/121:20:181
2231994640,3cyclictest4551-21latency_hist23:35:003
177824435,4sleep00-21swapper/019:10:010
138491430,0ptp4l401ktimersoftd/320:10:053
2228994235,4cyclictest14436-21ls23:55:001
2231994136,3cyclictest41-21ksoftirqd/323:20:013
138491410,0ptp4l401ktimersoftd/322:20:273
138491410,0ptp4l401ktimersoftd/322:20:273
138491410,0ptp4l401ktimersoftd/322:05:153
138491410,0ptp4l401ktimersoftd/319:20:193
2231994034,3cyclictest41-21ksoftirqd/322:30:013
2231994029,9cyclictest41-21ksoftirqd/322:15:223
138491400,0ptp4l401ktimersoftd/323:45:113
2231993934,3cyclictest41-21ksoftirqd/319:15:003
2231993927,10cyclictest41-21ksoftirqd/320:50:163
2228993911,26cyclictest0-21swapper/119:46:531
2231993834,2cyclictest41-21ksoftirqd/321:45:003
2231993833,3cyclictest41-21ksoftirqd/319:50:003
2231993831,4cyclictest41-21ksoftirqd/319:42:523
2231993828,8cyclictest41-21ksoftirqd/322:50:143
2229993831,5cyclictest33-21ksoftirqd/223:14:442
138491380,0ptp4l401ktimersoftd/320:59:563
2231993733,2cyclictest41-21ksoftirqd/321:35:163
2231993732,3cyclictest41-21ksoftirqd/323:00:183
2231993732,3cyclictest41-21ksoftirqd/322:30:143
2231993732,3cyclictest41-21ksoftirqd/321:05:013
2231993730,4cyclictest41-21ksoftirqd/300:14:153
223199370,2cyclictest121rcu_preempt20:20:273
2229993731,4cyclictest33-21ksoftirqd/223:19:182
2229993731,4cyclictest33-21ksoftirqd/221:14:062
2229993730,4cyclictest33-21ksoftirqd/223:36:562
2229993730,4cyclictest33-21ksoftirqd/219:57:522
2228993731,4cyclictest25-21ksoftirqd/100:26:321
2306223631,2sleep233-21ksoftirqd/223:05:192
223199366,6cyclictest41-21ksoftirqd/322:35:133
2231993632,3cyclictest41-21ksoftirqd/319:55:133
2231993632,2cyclictest41-21ksoftirqd/320:05:003
2231993631,3cyclictest41-21ksoftirqd/323:50:163
2231993631,3cyclictest41-21ksoftirqd/319:40:013
2231993631,3cyclictest41-21ksoftirqd/319:30:273
2231993630,4cyclictest41-21ksoftirqd/321:52:303
2231993630,4cyclictest41-21ksoftirqd/321:52:293
2231993630,4cyclictest41-21ksoftirqd/321:49:333
2231993630,4cyclictest41-21ksoftirqd/319:52:143
2231993626,9cyclictest41-21ksoftirqd/320:30:183
2229993631,3cyclictest33-21ksoftirqd/223:50:102
2229993631,3cyclictest29790-21awk22:15:002
2229993630,4cyclictest33-21ksoftirqd/222:57:322
2229993630,4cyclictest33-21ksoftirqd/221:52:362
2229993630,4cyclictest33-21ksoftirqd/221:52:362
2229993630,4cyclictest33-21ksoftirqd/221:44:542
2229993630,4cyclictest33-21ksoftirqd/221:09:482
2229993630,3cyclictest33-21ksoftirqd/221:28:062
2229993629,4cyclictest33-21ksoftirqd/220:05:012
2229993625,6cyclictest33-21ksoftirqd/223:25:112
2229993613,20cyclictest14961-21/usr/sbin/munin22:50:182
2228993630,4cyclictest25-21ksoftirqd/123:14:041
2228993630,4cyclictest25-21ksoftirqd/119:25:571
2228993629,5cyclictest25-21ksoftirqd/121:16:371
2228993629,4cyclictest25-21ksoftirqd/119:53:381
2227993630,4cyclictest9-21ksoftirqd/020:34:120
138491360,0ptp4l401ktimersoftd/320:35:173
138491360,0ptp4l401ktimersoftd/320:16:583
138491360,0ptp4l401ktimersoftd/300:15:273
2231993531,2cyclictest41-21ksoftirqd/323:40:003
2231993530,3cyclictest41-21ksoftirqd/319:15:123
2231993530,3cyclictest41-21ksoftirqd/300:20:203
2231993530,2cyclictest41-21ksoftirqd/322:05:003
2231993529,4cyclictest41-21ksoftirqd/300:08:213
2229993529,4cyclictest33-21ksoftirqd/223:40:372
2229993529,4cyclictest33-21ksoftirqd/222:23:532
2229993529,4cyclictest33-21ksoftirqd/222:23:532
2229993529,4cyclictest33-21ksoftirqd/222:05:532
2229993529,4cyclictest33-21ksoftirqd/221:22:572
2229993529,4cyclictest33-21ksoftirqd/220:28:242
2229993529,4cyclictest33-21ksoftirqd/219:53:592
2229993529,4cyclictest33-21ksoftirqd/219:43:312
2229993529,4cyclictest33-21ksoftirqd/200:14:072
2228993529,4cyclictest25-21ksoftirqd/122:20:361
2228993529,4cyclictest25-21ksoftirqd/122:20:361
2228993529,4cyclictest25-21ksoftirqd/122:08:001
2228993529,4cyclictest25-21ksoftirqd/120:06:081
2228993529,4cyclictest25-21ksoftirqd/119:55:091
2228993528,4cyclictest2148-21sh00:35:001
2228993527,5cyclictest25-21ksoftirqd/123:55:101
2227993530,3cyclictest9-21ksoftirqd/020:55:100
2227993530,3cyclictest27152-21dump-pmu-power00:20:010
2227993529,4cyclictest9-21ksoftirqd/023:33:400
2227993529,4cyclictest9-21ksoftirqd/022:26:000
2227993529,4cyclictest9-21ksoftirqd/021:05:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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