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2026-08-19 - 10:22
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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 Wed Aug 19, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291492206172,22sleep10-21swapper/119:08:481
290882204170,23sleep20-21swapper/219:08:002
139491204160,33phc2sys0-21swapper/319:06:103
291232203170,22sleep00-21swapper/019:08:260
703921650,6sleep02953699cyclictest21:45:030
1394021640,7sleep02953699cyclictest23:05:180
1586621620,6sleep02953699cyclictest20:55:170
238722650,6sleep12953799cyclictest23:25:211
29537996223,4cyclictest25-21ksoftirqd/121:00:171
29539995918,10cyclictest41-21ksoftirqd/323:50:013
29539995824,3cyclictest41-21ksoftirqd/323:40:013
29536995830,6cyclictest9-21ksoftirqd/022:30:010
29536995725,4cyclictest9-21ksoftirqd/022:35:140
29536995723,3cyclictest9-21ksoftirqd/023:50:000
21432570,2sleep20-21swapper/222:40:202
2953799565,8cyclictest25649-21latency_hist20:10:001
139391560,1ptp4l401ktimersoftd/320:41:063
29539995515,5cyclictest41-21ksoftirqd/323:10:193
29539995515,4cyclictest41-21ksoftirqd/322:54:593
2953799554,9cyclictest27968-21cat20:15:001
254512550,1sleep20-21swapper/221:15:162
29539995410,9cyclictest41-21ksoftirqd/322:00:213
2953799544,6cyclictest9549-21tune2fs19:35:161
2953799535,6cyclictest7761-21grep22:50:271
2953799534,6cyclictest16472-21latency_hist22:05:011
29536995319,4cyclictest9-21ksoftirqd/019:58:320
2953799525,6cyclictest32607-21cut23:45:151
2953799525,6cyclictest31482-21tune2fs22:35:171
2953799524,6cyclictest9563-21expr21:50:131
2953799524,6cyclictest9563-21expr21:50:121
2953799524,6cyclictest18456-21tune2fs23:15:151
2953799523,6cyclictest8814-21run-parts00:00:261
29537995217,4cyclictest25-21ksoftirqd/121:30:161
29536995219,4cyclictest9-21ksoftirqd/021:35:000
2953999519,8cyclictest41-21ksoftirqd/319:30:223
29539995119,4cyclictest41-21ksoftirqd/323:50:193
29539995118,9cyclictest41-21ksoftirqd/300:05:173
29539995118,4cyclictest41-21ksoftirqd/323:55:153
29539995118,4cyclictest41-21ksoftirqd/323:19:093
2953899511,9cyclictest33-21ksoftirqd/220:20:162
2953799515,7cyclictest4660-21grep21:40:131
2953799514,6cyclictest4132-21cut20:30:191
2953799513,8cyclictest19088-21cpuspeed_turbos22:10:151
2953799513,7cyclictest15886-21grep20:55:171
2953799513,6cyclictest9201-21strings20:40:231
2953799513,6cyclictest1636-21sed20:25:191
2953799512,6cyclictest241ktimersoftd/123:05:121
29536995126,9cyclictest9-21ksoftirqd/023:00:000
29536995123,4cyclictest9-21ksoftirqd/020:30:000
29536995119,4cyclictest9-21ksoftirqd/000:00:240
29536995115,5cyclictest9-21ksoftirqd/022:00:010
2953999509,4cyclictest41-21ksoftirqd/320:30:143
29539995024,4cyclictest41-21ksoftirqd/320:00:233
2953899506,4cyclictest33-21ksoftirqd/223:35:252
29538995018,3cyclictest33-21ksoftirqd/222:10:012
2953799504,7cyclictest8162-21ls21:45:231
2953799504,6cyclictest30233-21tr23:40:131
2953799504,6cyclictest24079-21grep22:20:141
2953799504,6cyclictest19544-21cut19:55:201
2953799503,6cyclictest1880-21irqrtprio22:40:191
2953799502,8cyclictest30288-21sed19:10:191
2953799502,6cyclictest2256-21cstates21:35:151
29536995032,7cyclictest9-21ksoftirqd/019:40:000
29536995021,3cyclictest9-21ksoftirqd/000:05:290
29536995015,5cyclictest9-21ksoftirqd/000:20:190
134391500,1getstats15346-1kworker/3:0H19:55:213
29539994917,4cyclictest41-21ksoftirqd/321:45:233
29538994915,7cyclictest33-21ksoftirqd/221:00:192
2953799494,6cyclictest21019-21switchtime00:25:261
2953799494,6cyclictest12676-21cstates00:10:161
2953799494,6cyclictest12676-21cstates00:10:151
2953799493,6cyclictest30951-21sed22:35:011
2953799492,6cyclictest8009-21latency_hist20:40:011
2953799492,6cyclictest8009-21latency_hist20:40:011
2953799492,6cyclictest11735-21irqrtprio23:00:201
2953799491,6cyclictest26463-21cpuspeed_turbos22:25:151
2953799490,8cyclictest25-21ksoftirqd/120:45:181
2953799490,6cyclictest241ktimersoftd/119:25:241
2953799490,6cyclictest241ktimersoftd/119:25:241
29536994930,8cyclictest9-21ksoftirqd/023:40:010
29536994927,10cyclictest9-21ksoftirqd/019:55:000
29536994919,4cyclictest9-21ksoftirqd/022:10:250
29536994916,7cyclictest9-21ksoftirqd/021:20:170
29536994916,6cyclictest9-21ksoftirqd/022:05:130
2953699491,3cyclictest121rcu_preempt00:15:010
2953699491,3cyclictest121rcu_preempt00:15:010
139391490,0ptp4l401ktimersoftd/322:25:233
134391490,4getstats2953999cyclictest00:25:213
2953999487,8cyclictest41-21ksoftirqd/323:05:123
2953899483,5cyclictest33-21ksoftirqd/220:45:012
2953799484,7cyclictest13800-21sed20:50:191
2953799483,7cyclictest4786-21ptp4l-jitter22:45:241
2953799483,7cyclictest18178-21expr22:05:271
2953799483,6cyclictest16246-21/usr/sbin/munin19:50:141
2953799483,6cyclictest11782-21expr19:40:161
2953799482,6cyclictest22559-21/usr/sbin/munin21:10:141
29536994830,8cyclictest9-21ksoftirqd/019:25:110
29536994830,8cyclictest9-21ksoftirqd/019:25:110
29536994829,8cyclictest9-21ksoftirqd/021:40:180
29536994828,9cyclictest9-21ksoftirqd/021:15:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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