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2026-03-28 - 08:11
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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 Sat Mar 28, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591225158,22phc2sys0-21swapper/319:09:123
243022202170,21sleep20-21swapper/219:07:592
242142202170,22sleep10-21swapper/119:06:511
243632199165,22sleep00-21swapper/019:08:460
1815921470,5sleep02494799cyclictest00:20:200
1815921470,5sleep02494799cyclictest00:20:200
237632700,2sleep32495099cyclictest20:10:233
138491690,1ptp4l391rcuc/322:05:423
41992620,2sleep00-21swapper/020:35:270
2495099616,15cyclictest32621-21cpuspeed_turbos19:25:133
2495099593,15cyclictest17733-21/usr/sbin/munin20:00:123
172142560,4sleep117215-21cpuspeed_turbos00:20:131
172142560,4sleep117215-21cpuspeed_turbos00:20:131
138491560,1ptp4l391rcuc/322:55:283
2495099554,11cyclictest22035-21date21:14:593
135191550,1getstats0-21swapper/322:48:543
2495099522,16cyclictest2555-21apt-get19:30:143
2495099504,9cyclictest20091-21cat23:20:183
2495099502,14cyclictest27452-21apt-get19:15:113
2495099501,11cyclictest0-21swapper/320:15:183
232752500,2sleep00-21swapper/000:30:190
50798460,9rtkit-daemon0-21swapper/122:18:401
2494999461,42cyclictest7108-21cron21:50:002
2494999450,42cyclictest14252-21sshd20:56:412
138491430,0ptp4l401ktimersoftd/323:49:273
138491430,0ptp4l401ktimersoftd/321:21:403
138491430,0ptp4l401ktimersoftd/320:30:123
2495099425,8cyclictest15513-21ps21:00:193
138491420,0ptp4l401ktimersoftd/321:57:473
138491420,0ptp4l401ktimersoftd/300:24:223
138491420,0ptp4l401ktimersoftd/300:24:213
2495099412,16cyclictest5631-21ps21:45:173
138491410,0ptp4l401ktimersoftd/321:30:173
138491410,0ptp4l401ktimersoftd/321:05:323
138491410,0ptp4l401ktimersoftd/319:50:223
138491410,0ptp4l401ktimersoftd/319:50:223
2495099403,7cyclictest28496-21meminfo20:20:213
2495099403,7cyclictest28496-21meminfo20:20:203
24949994035,3cyclictest33-21ksoftirqd/200:25:002
24949994035,3cyclictest33-21ksoftirqd/200:25:002
50798390,6rtkit-daemon0-21swapper/023:16:230
24950993934,3cyclictest7881-21fschecks_count20:45:173
24950993933,3cyclictest24367-21idleruntime-cro21:19:593
134991390,1getstats0-21swapper/319:12:083
50798380,5rtkit-daemon7046-21chrt21:49:131
24950993831,4cyclictest41-21ksoftirqd/300:30:003
24948993834,2cyclictest1303-21runrttasks23:06:231
138491380,0ptp4l401ktimersoftd/322:44:563
24949993732,3cyclictest33-21ksoftirqd/223:10:112
24949993732,3cyclictest33-21ksoftirqd/223:10:112
24949993732,3cyclictest33-21ksoftirqd/219:55:002
24949993732,3cyclictest33-21ksoftirqd/219:55:002
24948993734,2cyclictest25-21ksoftirqd/119:19:591
24948993732,3cyclictest25-21ksoftirqd/100:30:191
24948993732,3cyclictest25-21ksoftirqd/100:20:001
24948993731,4cyclictest25-21ksoftirqd/122:48:101
24948993731,3cyclictest25-21ksoftirqd/121:00:271
24950993630,4cyclictest41-21ksoftirqd/319:44:583
24950993630,4cyclictest41-21ksoftirqd/300:05:123
24949993632,2cyclictest33-21ksoftirqd/221:10:202
24949993631,2cyclictest33-21ksoftirqd/221:15:182
24949993630,4cyclictest33-21ksoftirqd/223:37:452
24949993630,4cyclictest33-21ksoftirqd/222:54:412
24949993630,4cyclictest33-21ksoftirqd/221:52:272
24949993630,4cyclictest33-21ksoftirqd/220:35:132
24948993631,3cyclictest25-21ksoftirqd/121:15:111
24948993630,4cyclictest25-21ksoftirqd/120:44:431
24948993630,4cyclictest25-21ksoftirqd/120:21:281
24948993630,4cyclictest25-21ksoftirqd/120:21:281
24948993630,4cyclictest25-21ksoftirqd/100:36:541
24948993630,3cyclictest25-21ksoftirqd/123:15:191
24948993630,3cyclictest25-21ksoftirqd/119:45:171
50798350,2rtkit-daemon0-21swapper/019:25:580
2495099352,13cyclictest6100-21irqrtprio19:35:193
2495099351,8cyclictest22633-21perl23:25:153
24949993530,3cyclictest33-21ksoftirqd/222:46:572
24949993530,3cyclictest33-21ksoftirqd/222:21:232
24949993530,3cyclictest33-21ksoftirqd/222:15:002
24949993530,3cyclictest33-21ksoftirqd/219:15:112
24949993529,4cyclictest33-21ksoftirqd/223:02:152
24949993529,4cyclictest33-21ksoftirqd/221:00:312
24949993529,4cyclictest33-21ksoftirqd/220:12:012
24949993529,4cyclictest33-21ksoftirqd/219:32:422
24949993528,5cyclictest33-21ksoftirqd/223:54:182
24948993530,3cyclictest25-21ksoftirqd/123:40:171
24948993530,3cyclictest25-21ksoftirqd/119:35:011
24948993529,4cyclictest25-21ksoftirqd/123:29:151
24948993529,4cyclictest25-21ksoftirqd/123:13:381
24948993529,4cyclictest25-21ksoftirqd/123:13:381
24948993529,4cyclictest25-21ksoftirqd/121:59:161
24948993529,4cyclictest25-21ksoftirqd/120:32:181
24948993528,4cyclictest25-21ksoftirqd/123:56:461
24947993530,3cyclictest9-21ksoftirqd/020:19:590
24947993529,4cyclictest9-21ksoftirqd/022:26:060
24947993529,4cyclictest9-21ksoftirqd/021:06:270
24947993529,4cyclictest9-21ksoftirqd/000:09:000
24947993529,4cyclictest9-21ksoftirqd/000:04:110
24947993528,4cyclictest9-21ksoftirqd/023:34:460
138491350,0ptp4l401ktimersoftd/321:25:023
50798340,2rtkit-daemon0-21swapper/022:43:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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