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2026-06-04 - 11:15
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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 Thu Jun 04, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296052233166,22sleep30-21swapper/319:09:163
295782202167,23sleep10-21swapper/119:08:541
295422202169,22sleep20-21swapper/219:08:272
293532198166,21sleep00-21swapper/019:06:030
2265821400,8sleep12995799cyclictest23:00:001
138491690,1ptp4l401ktimersoftd/322:50:213
29958996526,6cyclictest33-21ksoftirqd/200:25:182
29958996526,6cyclictest33-21ksoftirqd/200:25:182
29958996431,8cyclictest33-21ksoftirqd/222:50:122
29958996330,8cyclictest33-21ksoftirqd/223:15:202
29958996228,6cyclictest33-21ksoftirqd/221:54:592
29958996228,4cyclictest33-21ksoftirqd/200:10:182
29958996127,12cyclictest33-21ksoftirqd/222:00:242
29958996125,4cyclictest33-21ksoftirqd/222:10:142
29958996029,9cyclictest33-21ksoftirqd/221:40:132
29958996029,6cyclictest33-21ksoftirqd/220:40:112
29958996024,6cyclictest33-21ksoftirqd/219:20:102
29958996023,6cyclictest33-21ksoftirqd/200:05:132
29958996021,6cyclictest33-21ksoftirqd/223:30:252
2995799607,11cyclictest159832sleep120:08:141
29958995929,3cyclictest33-21ksoftirqd/222:45:112
29958995925,6cyclictest33-21ksoftirqd/223:10:012
29958995924,5cyclictest33-21ksoftirqd/223:45:002
29958995924,5cyclictest33-21ksoftirqd/220:20:102
29958995923,5cyclictest33-21ksoftirqd/223:50:012
29958995923,5cyclictest33-21ksoftirqd/222:40:112
29958995831,4cyclictest33-21ksoftirqd/200:20:212
29958995824,8cyclictest33-21ksoftirqd/223:00:252
29958995823,5cyclictest33-21ksoftirqd/221:30:252
29958995822,5cyclictest33-21ksoftirqd/223:45:122
29958995822,5cyclictest33-21ksoftirqd/223:35:132
29958995822,5cyclictest33-21ksoftirqd/222:10:012
2995799587,12cyclictest30733-21irqrtprio19:10:191
2995799587,11cyclictest5843-21/usr/sbin/munin00:35:131
29958995721,5cyclictest33-21ksoftirqd/220:30:072
29958995719,7cyclictest33-21ksoftirqd/222:20:122
2995799579,12cyclictest2192-21switchtime22:15:251
29956995723,3cyclictest9-21ksoftirqd/022:25:170
134991570,6getstats2995999cyclictest20:56:173
29958995624,5cyclictest33-21ksoftirqd/219:20:012
29958995621,6cyclictest33-21ksoftirqd/220:50:062
2995799569,11cyclictest22388-21seq21:50:271
2995799567,13cyclictest27016-21ps20:40:181
2995799567,10cyclictest29589-21mailstats22:05:251
29958995527,6cyclictest33-21ksoftirqd/219:40:202
29958995527,3cyclictest33-21ksoftirqd/200:35:242
29958995526,4cyclictest33-21ksoftirqd/222:15:262
29958995525,3cyclictest33-21ksoftirqd/223:55:192
29958995525,3cyclictest33-21ksoftirqd/223:25:182
29958995521,5cyclictest33-21ksoftirqd/200:00:102
2995799558,18cyclictest19563-21phc2sys21:45:211
2995799556,13cyclictest3814-21cut00:30:181
2995799556,11cyclictest13354-21expr21:35:131
138491550,1ptp4l401ktimersoftd/323:20:123
138491550,1ptp4l401ktimersoftd/323:20:123
29958995426,3cyclictest33-21ksoftirqd/219:11:052
29958995425,7cyclictest33-21ksoftirqd/221:35:202
29958995422,5cyclictest33-21ksoftirqd/220:10:072
2995799548,18cyclictest27008-21/usr/sbin/munin00:10:251
2995799546,12cyclictest30756-21/usr/sbin/munin23:15:141
2995799546,12cyclictest15701-21cpuspeed_turbos21:40:121
5192530,3sleep10-21swapper/100:25:131
5192530,3sleep10-21swapper/100:25:131
29958995327,4cyclictest33-21ksoftirqd/221:10:112
29958995325,7cyclictest33-21ksoftirqd/222:35:242
29958995324,6cyclictest33-21ksoftirqd/223:20:102
29958995324,6cyclictest33-21ksoftirqd/223:20:102
29958995319,6cyclictest33-21ksoftirqd/222:25:132
2995899524,8cyclictest30253-21sendmail-msp00:19:592
29958995220,5cyclictest33-21ksoftirqd/221:20:192
29958995220,3cyclictest33-21ksoftirqd/219:30:182
2995699523,5cyclictest9-21ksoftirqd/022:40:110
280892520,3sleep3401ktimersoftd/323:10:123
29958995122,5cyclictest33-21ksoftirqd/220:10:012
2995799519,11cyclictest23638-21/usr/sbin/munin23:00:181
2995799516,18cyclictest23619-21latency20:30:151
2995799516,11cyclictest26184-21cut23:05:171
2995699515,9cyclictest9-21ksoftirqd/020:10:120
2995699515,10cyclictest9-21ksoftirqd/022:00:240
2995699514,8cyclictest9-21ksoftirqd/022:20:140
2995899506,6cyclictest33-21ksoftirqd/220:37:052
2995899504,6cyclictest6690-21latency_hist19:40:002
29958995024,4cyclictest33-21ksoftirqd/220:00:222
2995699506,9cyclictest9-21ksoftirqd/021:20:160
2995699506,9cyclictest9-21ksoftirqd/019:50:090
2995699505,9cyclictest9-21ksoftirqd/021:30:250
2995699505,9cyclictest9-21ksoftirqd/021:00:110
2995699503,6cyclictest9-21ksoftirqd/000:00:160
2995699502,5cyclictest9-21ksoftirqd/023:41:380
2995899495,9cyclictest33-21ksoftirqd/221:55:242
2995899495,6cyclictest33-21ksoftirqd/221:45:012
2995899494,7cyclictest33-21ksoftirqd/221:25:262
29958994920,8cyclictest33-21ksoftirqd/221:00:162
29958994915,5cyclictest33-21ksoftirqd/219:30:002
2995799496,10cyclictest2270-21taskset19:20:191
2995699495,9cyclictest9-21ksoftirqd/022:59:590
2995699494,8cyclictest9-21ksoftirqd/022:35:170
2995699494,10cyclictest9-21ksoftirqd/023:25:230
2995699492,6cyclictest9-21ksoftirqd/019:10:190
2995699490,13cyclictest9-21ksoftirqd/023:00:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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