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2026-07-23 - 11:16
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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 Thu Jul 23, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176582218157,51sleep00-21swapper/019:08:080
176982204170,23sleep30-21swapper/319:08:383
176972204171,22sleep20-21swapper/219:08:382
176642202168,22sleep10-21swapper/119:08:121
1780428362,11sleep00-21swapper/019:10:010
238662590,2sleep10-21swapper/100:00:011
156182570,2sleep00-21swapper/020:10:220
18274995331,2cyclictest9-21ksoftirqd/000:20:180
139391530,1ptp4l401ktimersoftd/321:26:183
1827699501,46cyclictest8305-21awk23:25:231
18274995015,6cyclictest9-21ksoftirqd/020:59:590
1827699470,45cyclictest0-21swapper/120:58:341
18274994718,7cyclictest9-21ksoftirqd/019:25:160
18274994718,6cyclictest9-21ksoftirqd/020:30:200
18278994628,15cyclictest33-21ksoftirqd/219:55:002
18274994616,6cyclictest9-21ksoftirqd/023:30:260
18278994531,12cyclictest33-21ksoftirqd/222:40:002
1827499459,6cyclictest9-21ksoftirqd/020:40:270
1827499459,5cyclictest9-21ksoftirqd/020:05:280
18274994515,4cyclictest9-21ksoftirqd/023:13:020
18274994515,4cyclictest9-21ksoftirqd/022:11:080
18274994514,5cyclictest9-21ksoftirqd/000:34:220
18274994514,3cyclictest9-21ksoftirqd/021:50:470
18278994440,2cyclictest33-21ksoftirqd/219:20:002
18274994414,4cyclictest9-21ksoftirqd/000:17:290
139391440,0ptp4l401ktimersoftd/322:45:283
139391440,0ptp4l401ktimersoftd/321:41:443
18279994335,5cyclictest207-21systemd-journal22:45:003
18278994338,3cyclictest10468-21cron21:10:002
1827499434,4cyclictest9-21ksoftirqd/022:45:250
18274994314,4cyclictest9-21ksoftirqd/022:21:440
139391430,3ptp4l1827999cyclictest00:09:383
139391430,0ptp4l401ktimersoftd/319:35:153
139391430,0ptp4l401ktimersoftd/319:20:183
139391430,0ptp4l401ktimersoftd/319:20:183
139391430,0ptp4l401ktimersoftd/300:18:563
18278994227,12cyclictest33-21ksoftirqd/222:05:002
18278994224,15cyclictest33-21ksoftirqd/223:40:002
1827499429,3cyclictest9-21ksoftirqd/019:40:270
18274994234,5cyclictest6896-21cron23:25:000
18274994213,4cyclictest9-21ksoftirqd/021:31:440
18274994212,4cyclictest9-21ksoftirqd/020:38:170
18274994212,4cyclictest9-21ksoftirqd/000:13:390
139391420,0ptp4l401ktimersoftd/323:22:493
139391420,0ptp4l401ktimersoftd/320:23:263
1827999411,38cyclictest29742-21cron23:04:593
1827499415,4cyclictest9-21ksoftirqd/020:25:170
18274994137,2cyclictest32388-21latency_hist19:40:010
18274994115,6cyclictest9-21ksoftirqd/021:15:020
18274994114,3cyclictest9-21ksoftirqd/019:30:150
18274994112,3cyclictest9-21ksoftirqd/023:44:340
139391410,0ptp4l401ktimersoftd/323:10:053
18278994029,8cyclictest33-21ksoftirqd/221:15:172
18278994024,5cyclictest33-21ksoftirqd/220:37:492
18274994034,3cyclictest9-21ksoftirqd/000:40:000
1827499403,3cyclictest121rcu_preempt19:20:240
1827499403,3cyclictest121rcu_preempt19:20:240
1827499402,2cyclictest121rcu_preempt21:45:220
18274994013,4cyclictest9-21ksoftirqd/023:53:130
1827499401,2cyclictest9-21ksoftirqd/022:29:590
1827499400,2cyclictest121rcu_preempt21:25:390
1827899396,3cyclictest33-21ksoftirqd/223:10:162
18278993934,3cyclictest16657-21idleruntime-cro20:15:012
1827499397,7cyclictest9-21ksoftirqd/022:05:010
1827499396,4cyclictest9-21ksoftirqd/021:20:570
18274993934,2cyclictest9-21ksoftirqd/020:20:010
18274993933,3cyclictest9-21ksoftirqd/019:20:000
18274993911,3cyclictest9-21ksoftirqd/000:07:290
139391390,1ptp4l401ktimersoftd/322:12:173
139391390,1ptp4l401ktimersoftd/321:37:343
139391390,0ptp4l401ktimersoftd/320:40:133
18278993834,3cyclictest33-21ksoftirqd/222:55:002
18278993834,2cyclictest33-21ksoftirqd/221:34:592
18278993833,3cyclictest33-21ksoftirqd/223:25:142
18278993833,3cyclictest33-21ksoftirqd/222:10:002
18278993832,3cyclictest33-21ksoftirqd/220:15:132
18276993810,27cyclictest0-21swapper/123:40:231
1827499386,3cyclictest9-21ksoftirqd/021:59:260
18274993833,3cyclictest9-21ksoftirqd/019:50:120
18274993832,3cyclictest9-21ksoftirqd/019:55:190
1827499382,6cyclictest9-21ksoftirqd/023:25:230
1827499381,5cyclictest9-21ksoftirqd/023:45:200
139391380,0ptp4l401ktimersoftd/322:15:253
18279993732,3cyclictest41-21ksoftirqd/320:01:253
18279993731,4cyclictest41-21ksoftirqd/323:58:063
18279993731,4cyclictest41-21ksoftirqd/323:53:573
18278993733,2cyclictest33-21ksoftirqd/220:20:162
18278993732,3cyclictest14001-21cron22:25:012
18278993731,4cyclictest33-21ksoftirqd/223:20:002
18278993730,4cyclictest33-21ksoftirqd/220:40:272
1827699379,26cyclictest0-21swapper/123:05:231
18276993731,4cyclictest25-21ksoftirqd/100:06:061
1827499375,3cyclictest9-21ksoftirqd/021:41:380
1827499374,6cyclictest9-21ksoftirqd/022:55:130
18274993733,2cyclictest9-21ksoftirqd/023:20:000
18274993732,3cyclictest9-21ksoftirqd/021:40:000
18274993731,3cyclictest9-21ksoftirqd/022:20:000
18274993726,3cyclictest9-21ksoftirqd/021:05:270
1827499370,2cyclictest121rcu_preempt21:10:240
18279993631,3cyclictest41-21ksoftirqd/320:32:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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