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2026-08-19 - 14:50
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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 Aug 19, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310382204169,23sleep30-21swapper/319:08:513
308292203171,21sleep10-21swapper/119:06:081
309272202168,22sleep20-21swapper/219:07:262
310402201167,22sleep00-21swapper/019:08:520
3048821450,6sleep23142199cyclictest20:10:282
671121370,3sleep13142099cyclictest22:40:141
21862750,25sleep09-21ksoftirqd/021:25:200
31421996931,7cyclictest33-21ksoftirqd/222:05:262
31421996535,4cyclictest33-21ksoftirqd/219:54:592
31421996435,4cyclictest33-21ksoftirqd/221:15:012
31421996331,7cyclictest33-21ksoftirqd/222:50:252
31421996231,4cyclictest33-21ksoftirqd/219:25:132
31421996229,6cyclictest33-21ksoftirqd/222:40:002
31421996229,6cyclictest33-21ksoftirqd/221:50:132
31421996225,4cyclictest33-21ksoftirqd/223:20:222
3142299613,10cyclictest30804-21ls00:35:013
3142299613,10cyclictest30804-21ls00:35:003
31421996131,5cyclictest33-21ksoftirqd/220:05:202
31421996129,6cyclictest33-21ksoftirqd/221:40:152
31421996129,6cyclictest33-21ksoftirqd/219:45:262
31421996129,6cyclictest33-21ksoftirqd/219:30:172
31421996128,6cyclictest33-21ksoftirqd/220:00:292
31421996128,5cyclictest33-21ksoftirqd/220:30:132
31421996127,8cyclictest33-21ksoftirqd/219:15:202
31421996126,7cyclictest33-21ksoftirqd/200:15:242
3142299603,12cyclictest27411-21sed20:05:233
31421996030,5cyclictest33-21ksoftirqd/222:15:202
31421996028,6cyclictest33-21ksoftirqd/221:25:152
3142299596,9cyclictest8175-21sshd22:40:443
3142299595,12cyclictest2927-21gzip20:20:233
31421995929,8cyclictest33-21ksoftirqd/222:45:142
31421995927,6cyclictest33-21ksoftirqd/221:05:162
31421995927,6cyclictest33-21ksoftirqd/220:20:162
3142299587,10cyclictest12546-21grep23:55:243
3142299582,10cyclictest1377-21cpuspeed_turbos23:35:143
3142299582,10cyclictest0-21swapper/320:35:013
3142299581,17cyclictest0-21swapper/323:05:243
31421995830,4cyclictest33-21ksoftirqd/222:40:142
31421995829,6cyclictest33-21ksoftirqd/222:25:142
31421995829,5cyclictest33-21ksoftirqd/223:05:212
31421995829,4cyclictest33-21ksoftirqd/221:40:002
31421995828,6cyclictest33-21ksoftirqd/200:10:162
31421995828,5cyclictest33-21ksoftirqd/200:00:142
31421995828,5cyclictest33-21ksoftirqd/200:00:142
31421995827,6cyclictest33-21ksoftirqd/223:55:202
31421995827,5cyclictest33-21ksoftirqd/200:30:232
31421995827,5cyclictest33-21ksoftirqd/200:30:232
3142299576,11cyclictest16827-21sort23:00:193
3142299576,11cyclictest16827-21sort23:00:193
3142299574,17cyclictest6593-21wc19:25:113
3142299574,10cyclictest25801-21latency_hist23:20:013
31421995732,8cyclictest33-21ksoftirqd/221:55:172
31421995730,6cyclictest33-21ksoftirqd/222:20:152
31421995729,5cyclictest33-21ksoftirqd/221:30:132
31421995728,6cyclictest33-21ksoftirqd/223:00:152
31421995728,6cyclictest33-21ksoftirqd/223:00:152
31421995727,6cyclictest33-21ksoftirqd/222:10:172
31421995727,6cyclictest33-21ksoftirqd/200:05:282
3142299567,16cyclictest30346-21awk23:25:273
3142299565,10cyclictest6352-21date20:30:013
3142299565,10cyclictest22849-21grep19:55:253
3142299564,9cyclictest461-21dbus-daemon22:00:263
3142299564,10cyclictest7965-21ssh21:35:283
3142299562,11cyclictest12119-21sed22:50:193
31421995629,4cyclictest33-21ksoftirqd/223:35:182
31421995628,4cyclictest33-21ksoftirqd/219:35:142
31421995627,6cyclictest33-21ksoftirqd/223:15:152
31421995627,4cyclictest33-21ksoftirqd/220:45:172
31421995626,4cyclictest33-21ksoftirqd/221:45:262
31421995626,4cyclictest33-21ksoftirqd/220:25:132
31421995625,6cyclictest33-21ksoftirqd/200:25:212
31421995625,5cyclictest33-21ksoftirqd/220:55:142
31421995624,5cyclictest33-21ksoftirqd/220:35:142
31421995620,6cyclictest33-21ksoftirqd/221:25:012
3142099567,7cyclictest16355-21grep23:00:161
3142099567,7cyclictest16355-21grep23:00:161
3142299557,16cyclictest536-21timerandwakeup21:20:293
3142299554,9cyclictest9072-21/usr/sbin/munin20:35:253
3142299554,12cyclictest16771-21tune2fs00:05:203
3142299553,12cyclictest12497-21sed19:35:193
3142299553,11cyclictest8944-21/usr/sbin/munin19:30:203
3142299553,10cyclictest27273-21netstat23:20:203
3142299550,14cyclictest0-21swapper/322:55:213
3142299550,11cyclictest0-21swapper/321:40:183
31421995526,7cyclictest33-21ksoftirqd/223:10:142
31421995525,5cyclictest33-21ksoftirqd/223:50:262
31421995525,4cyclictest33-21ksoftirqd/222:00:242
3142099557,5cyclictest15063-21sed19:40:201
3142099556,6cyclictest16643-21grep21:55:151
31420995524,8cyclictest25-21ksoftirqd/119:11:061
31420995524,8cyclictest25-21ksoftirqd/119:11:061
3142299547,9cyclictest5203-21grep23:40:233
3142299545,9cyclictest29914-21latency21:15:193
3142299544,9cyclictest776-21vmstat20:15:283
3142299544,10cyclictest21422-21egrep22:05:133
3142299543,9cyclictest21707-21wc21:00:143
3142299543,11cyclictest21337-21date21:00:013
3142299543,10cyclictest25304-21processes21:05:243
3142299542,18cyclictest16997-21fschecks_count21:55:183
3142299542,11cyclictest22022-21sed23:10:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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