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2026-06-17 - 12:25
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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 17, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
239692204170,23sleep10-21swapper/119:07:551
238892204170,22sleep30-21swapper/319:06:523
240002203169,22sleep20-21swapper/219:08:192
239362201166,23sleep00-21swapper/019:07:290
2205121530,3sleep12442599cyclictest21:15:151
497221380,5sleep12442599cyclictest19:35:131
497221380,5sleep12442599cyclictest19:35:131
2442699660,23cyclictest1114-21cat20:30:252
2442699660,22cyclictest20077-21cat20:05:182
2442699630,22cyclictest18254-21ptp4l21:05:242
2442699630,21cyclictest18075-21date00:20:272
2442699630,21cyclictest18075-21date00:20:262
2442699620,30cyclictest11270-21/usr/sbin/munin00:10:212
2442699620,23cyclictest6688-21expr00:00:132
322322610,3sleep132237-21cpuspeed_turbos19:25:141
2442699600,25cyclictest25501-21sensors00:35:242
2442699600,21cyclictest16119-21timerwakeupswit21:00:252
173682600,4sleep217370-21irqrtprio23:15:182
99892590,1sleep20-21swapper/200:05:252
2442699590,23cyclictest3561-21mailstats20:35:252
2442699570,21cyclictest21577-21apt-config22:20:012
138491570,1ptp4l401ktimersoftd/319:30:233
138491570,0ptp4l401ktimersoftd/322:10:333
2442699550,22cyclictest13402-21mailstats20:55:252
2442699540,18cyclictest31103-21ls20:25:242
50798520,1rtkit-daemon0-21swapper/300:28:043
2442499492,45cyclictest1120-21cron23:50:000
138491490,1ptp4l401ktimersoftd/320:05:273
24425994617,27cyclictest0-21swapper/121:24:031
24425994539,3cyclictest223-21systemd-journal22:40:011
24425994525,17cyclictest25-21ksoftirqd/100:06:581
24425994516,27cyclictest0-21swapper/120:35:531
24425994515,28cyclictest0-21swapper/121:06:431
138491440,0ptp4l401ktimersoftd/323:33:143
138491440,0ptp4l401ktimersoftd/321:50:253
138491430,0ptp4l401ktimersoftd/323:23:153
138491430,0ptp4l401ktimersoftd/300:23:533
138491430,0ptp4l401ktimersoftd/300:23:533
24426994213,27cyclictest0-21swapper/219:35:232
24426994213,27cyclictest0-21swapper/219:35:232
138491420,0ptp4l401ktimersoftd/322:35:253
2442699410,24cyclictest26127-21tail20:15:262
2442599410,40cyclictest0-21swapper/119:40:541
138491410,1ptp4l401ktimersoftd/300:00:113
138491410,0ptp4l401ktimersoftd/300:11:253
2442699403,20cyclictest0-21swapper/221:20:192
2442699400,29cyclictest8359-21awk19:40:222
138491400,16ptp4l401ktimersoftd/319:50:113
24427993921,3cyclictest41-21ksoftirqd/323:20:003
24426993934,3cyclictest7385-21irqrtprio22:55:192
24427993834,3cyclictest41-21ksoftirqd/322:55:003
2442699380,22cyclictest24230-21cat20:15:002
24425993831,5cyclictest25-21ksoftirqd/121:29:471
24427993733,2cyclictest41-21ksoftirqd/322:35:013
24427993732,3cyclictest41-21ksoftirqd/321:45:003
24427993732,3cyclictest41-21ksoftirqd/320:35:143
24427993732,3cyclictest41-21ksoftirqd/319:40:223
24427993731,4cyclictest41-21ksoftirqd/320:34:123
24426993732,3cyclictest33-21ksoftirqd/222:17:502
2442699371,3cyclictest121rcu_preempt23:20:022
2442699370,26cyclictest0-21swapper/222:35:222
2442699370,23cyclictest22205-21df_abs21:15:152
24425993732,3cyclictest13870-21cron22:05:001
24425993731,3cyclictest25-21ksoftirqd/100:00:161
24425993716,20cyclictest0-21swapper/120:44:041
2442799366,3cyclictest41-21ksoftirqd/300:05:153
24427993632,3cyclictest41-21ksoftirqd/321:45:173
24427993632,3cyclictest41-21ksoftirqd/320:20:003
24427993632,2cyclictest41-21ksoftirqd/322:20:003
24427993631,3cyclictest41-21ksoftirqd/323:55:003
24427993631,3cyclictest41-21ksoftirqd/323:00:203
24427993631,3cyclictest41-21ksoftirqd/322:40:283
24427993631,3cyclictest41-21ksoftirqd/321:30:143
24427993631,3cyclictest41-21ksoftirqd/319:35:263
24427993631,3cyclictest41-21ksoftirqd/319:35:263
24427993631,3cyclictest41-21ksoftirqd/319:10:253
24427993631,3cyclictest41-21ksoftirqd/300:30:213
24427993630,4cyclictest41-21ksoftirqd/321:00:003
24427993629,5cyclictest41-21ksoftirqd/323:07:253
24427993629,5cyclictest41-21ksoftirqd/300:15:363
24426993630,4cyclictest33-21ksoftirqd/223:33:202
24426993630,4cyclictest33-21ksoftirqd/222:28:252
24426993629,4cyclictest33-21ksoftirqd/223:47:522
24426993629,4cyclictest33-21ksoftirqd/223:27:222
24426993629,4cyclictest33-21ksoftirqd/221:27:312
2442699361,21cyclictest21630-21cpuspeed_turbos00:30:132
2442699361,20cyclictest17857-21phc2sys22:10:202
2442699360,22cyclictest26980-21hddtemp_smartct23:35:162
2442699360,21cyclictest18418-21awk20:00:242
24425993630,4cyclictest25-21ksoftirqd/120:46:541
24425993629,5cyclictest25-21ksoftirqd/123:49:071
24424993631,3cyclictest9-21ksoftirqd/021:45:120
24424993630,4cyclictest9-21ksoftirqd/022:08:530
24424993630,4cyclictest9-21ksoftirqd/020:10:390
50798350,7rtkit-daemon0-21swapper/122:56:571
24427993531,3cyclictest41-21ksoftirqd/323:10:123
24427993531,3cyclictest41-21ksoftirqd/321:20:013
24427993530,3cyclictest41-21ksoftirqd/321:00:163
24427993530,3cyclictest41-21ksoftirqd/320:45:183
24427993530,3cyclictest41-21ksoftirqd/320:30:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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