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2026-05-10 - 11:09
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot6.osadl.org (updated Sun May 10, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2429721710,5sleep11147299cyclictest22:02:341
106891940,35ptp4l401ktimersoftd/320:29:143
11479996754,6cyclictest33-21ksoftirqd/201:42:322
112762604,10sleep20-21swapper/220:31:022
106891580,1ptp4l401ktimersoftd/323:42:013
92332575,39sleep00-21swapper/020:27:170
106891570,1ptp4l401ktimersoftd/322:39:113
106891570,1ptp4l401ktimersoftd/301:11:523
136462560,4sleep125-21ksoftirqd/100:53:101
11479995644,6cyclictest33-21ksoftirqd/221:57:252
106891530,1ptp4l401ktimersoftd/322:45:303
106891530,1ptp4l401ktimersoftd/322:45:303
146692520,2sleep30-21swapper/300:54:563
11479995013,8cyclictest33-21ksoftirqd/201:07:192
11479994836,6cyclictest33-21ksoftirqd/220:37:262
11479994830,4cyclictest33-21ksoftirqd/221:22:412
112752484,33sleep10-21swapper/120:31:011
106891480,1ptp4l401ktimersoftd/301:18:403
11479994736,5cyclictest33-21ksoftirqd/201:57:322
11479994717,3cyclictest33-21ksoftirqd/223:32:452
106891460,5ptp4l401ktimersoftd/300:41:373
11479994533,5cyclictest33-21ksoftirqd/223:57:282
106891450,2ptp4l23861-21kworker/3:201:43:053
11479994438,3cyclictest33-21ksoftirqd/201:07:232
1147999442,6cyclictest121rcu_preempt00:17:362
11479994426,4cyclictest33-21ksoftirqd/221:52:312
106891440,1ptp4l401ktimersoftd/301:57:053
11479994311,10cyclictest33-21ksoftirqd/222:42:312
11479994311,10cyclictest33-21ksoftirqd/222:42:312
106891430,1ptp4l401ktimersoftd/323:56:113
11479994236,3cyclictest33-21ksoftirqd/222:57:202
11479994222,3cyclictest33-21ksoftirqd/201:37:362
11479994221,13cyclictest33-21ksoftirqd/223:12:302
11479994135,3cyclictest33-21ksoftirqd/200:02:212
11479994134,4cyclictest33-21ksoftirqd/201:52:242
11467994113,24cyclictest560-21sed23:32:460
106891410,1ptp4l401ktimersoftd/323:50:273
106891410,1ptp4l401ktimersoftd/300:19:153
11467994013,23cyclictest3805-21cpuspeed_turbos21:22:260
11467994013,23cyclictest21227-21sh21:57:280
106891400,2ptp4l29844-21kworker/3:000:05:033
11467993913,23cyclictest8610-21/usr/sbin/munin21:32:290
11467993912,23cyclictest805-21expr00:07:320
11467993912,23cyclictest18824-21expr21:52:280
106891390,1ptp4l401ktimersoftd/301:28:563
106891390,1ptp4l401ktimersoftd/300:13:023
11479993831,4cyclictest33-21ksoftirqd/223:52:332
11479993825,10cyclictest33-21ksoftirqd/223:32:172
11479993814,4cyclictest33-21ksoftirqd/223:17:442
1147999381,3cyclictest121rcu_preempt00:47:472
1146799389,6cyclictest12601-21gltestperf23:12:300
11467993813,22cyclictest24172-21/usr/sbin/munin20:57:240
11467993813,22cyclictest24172-21/usr/sbin/munin20:57:240
11467993812,23cyclictest21534-21sh23:55:150
11467993812,23cyclictest14555-21sendmail_mailst01:27:420
11467993811,23cyclictest28289-21cat22:12:280
106891380,1ptp4l401ktimersoftd/323:25:043
106891380,1ptp4l401ktimersoftd/323:18:083
106891380,1ptp4l401ktimersoftd/322:51:303
106891380,1ptp4l401ktimersoftd/301:37:563
106891380,1ptp4l401ktimersoftd/301:02:313
106891380,1ptp4l401ktimersoftd/300:47:083
106891380,1ptp4l401ktimersoftd/300:32:133
106891380,1ptp4l401ktimersoftd/300:32:133
11479993731,3cyclictest33-21ksoftirqd/222:37:452
11479993725,3cyclictest33-21ksoftirqd/222:27:392
1147999370,9cyclictest121rcu_preempt23:07:352
1146799372,9cyclictest31369-21apt-get21:12:250
1146799371,8cyclictest5279-21ssh22:32:270
11467993714,20cyclictest0-21swapper/000:06:200
11467993712,22cyclictest4860-21diskmemload23:10:560
11467993712,22cyclictest1402-21missed_timers22:22:350
11467993711,3cyclictest4860-21diskmemload22:50:440
11467993711,23cyclictest19515-21tr01:32:410
11467993711,23cyclictest19438-21latency_hist00:27:180
11467993711,23cyclictest1055-21runrttasks22:29:550
11467993710,24cyclictest13399-21latency_hist21:42:150
106891370,1ptp4l401ktimersoftd/323:44:023
106891370,1ptp4l401ktimersoftd/323:33:023
106891370,1ptp4l401ktimersoftd/322:54:053
106891370,1ptp4l401ktimersoftd/301:23:223
106891370,1ptp4l401ktimersoftd/300:33:223
106891370,1ptp4l401ktimersoftd/300:33:223
106891370,1ptp4l401ktimersoftd/300:01:283
106891370,0ptp4l401ktimersoftd/301:58:043
106891370,0ptp4l401ktimersoftd/301:49:433
11479993631,3cyclictest33-21ksoftirqd/200:37:302
11479993624,9cyclictest33-21ksoftirqd/201:12:342
1146799362,7cyclictest11596-21apt-get00:52:310
1146799362,6cyclictest10173-21apt-get22:37:280
11467993612,21cyclictest29948-21cpu22:57:280
11467993612,21cyclictest17156-21cut00:57:370
11467993611,22cyclictest4860-21diskmemload23:23:580
11467993611,21cyclictest29891-21kernelversion21:07:320
106891360,1ptp4l401ktimersoftd/323:01:323
106891360,1ptp4l401ktimersoftd/322:32:543
106891360,1ptp4l401ktimersoftd/322:07:373
106891360,1ptp4l401ktimersoftd/301:33:263
106891360,0ptp4l401ktimersoftd/323:27:233
106891360,0ptp4l401ktimersoftd/301:14:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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