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2026-04-22 - 05:11
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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 rackdslot3.osadl.org (updated Wed Apr 22, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206173,22phc2sys0-21swapper/319:08:083
234992204171,22sleep20-21swapper/219:07:012
234972203172,20sleep00-21swapper/019:06:580
234022201168,22sleep10-21swapper/119:05:511
139491163125,13phc2sys0-21swapper/319:10:013
139391790,1ptp4l401ktimersoftd/320:55:243
53652630,3sleep25368-21fschecks_time23:00:152
24024996124,4cyclictest33-21ksoftirqd/222:40:012
24024996120,4cyclictest33-21ksoftirqd/221:55:252
24024996029,2cyclictest33-21ksoftirqd/219:35:142
24024995926,7cyclictest33-21ksoftirqd/200:20:002
24024995823,2cyclictest33-21ksoftirqd/221:35:282
125932580,4sleep125-21ksoftirqd/121:00:161
24024995729,4cyclictest33-21ksoftirqd/223:45:222
24024995728,8cyclictest33-21ksoftirqd/223:15:002
24024995727,4cyclictest33-21ksoftirqd/223:55:142
24024995626,7cyclictest33-21ksoftirqd/220:20:002
24024995626,3cyclictest33-21ksoftirqd/222:05:002
24024995622,4cyclictest33-21ksoftirqd/223:35:272
24024995524,7cyclictest33-21ksoftirqd/221:05:012
24024995523,5cyclictest33-21ksoftirqd/220:35:012
24024995517,6cyclictest33-21ksoftirqd/219:50:142
24024995426,3cyclictest33-21ksoftirqd/222:25:162
24024995425,7cyclictest33-21ksoftirqd/200:00:142
24024995421,7cyclictest33-21ksoftirqd/223:35:012
24024995421,4cyclictest33-21ksoftirqd/220:10:002
24024995419,4cyclictest33-21ksoftirqd/221:50:222
304622530,1sleep10-21swapper/121:35:261
24024995320,4cyclictest33-21ksoftirqd/223:20:172
24024995319,4cyclictest33-21ksoftirqd/223:00:002
24024995317,4cyclictest33-21ksoftirqd/221:10:162
2402399530,14cyclictest30156-21ps19:20:221
205872530,6sleep125-21ksoftirqd/122:25:121
24024995226,6cyclictest33-21ksoftirqd/219:15:192
24024995225,7cyclictest33-21ksoftirqd/220:40:262
24024995225,3cyclictest33-21ksoftirqd/221:30:012
24024995224,4cyclictest33-21ksoftirqd/223:40:282
24024995223,3cyclictest33-21ksoftirqd/221:15:232
24024995223,3cyclictest33-21ksoftirqd/200:20:192
24024995220,4cyclictest33-21ksoftirqd/221:40:152
24024995218,6cyclictest33-21ksoftirqd/220:00:012
2402399520,11cyclictest4506-21sed19:35:191
2402299525,9cyclictest9-21ksoftirqd/000:40:000
2402299525,9cyclictest9-21ksoftirqd/000:40:000
2402299525,8cyclictest9-21ksoftirqd/022:30:140
2402299521,10cyclictest0-21swapper/022:35:170
24024995122,7cyclictest33-21ksoftirqd/200:10:252
24024995122,7cyclictest33-21ksoftirqd/200:10:242
24024995118,9cyclictest33-21ksoftirqd/200:30:142
24024995118,8cyclictest33-21ksoftirqd/200:30:002
24024995115,5cyclictest33-21ksoftirqd/219:30:272
2402299515,8cyclictest9-21ksoftirqd/022:50:010
2402299514,9cyclictest9-21ksoftirqd/021:10:170
2402299514,7cyclictest9-21ksoftirqd/023:10:170
2402299513,9cyclictest24021-21cyclictest19:45:180
2402299512,6cyclictest9-21ksoftirqd/021:40:170
24024995023,7cyclictest33-21ksoftirqd/220:20:262
24024995023,7cyclictest33-21ksoftirqd/219:15:002
24024995019,7cyclictest33-21ksoftirqd/219:40:242
24024995017,5cyclictest33-21ksoftirqd/222:50:122
2402299504,9cyclictest9-21ksoftirqd/020:30:190
2402299504,10cyclictest9-21ksoftirqd/022:55:210
2402299504,10cyclictest9-21ksoftirqd/020:55:170
2402299502,11cyclictest9-21ksoftirqd/020:05:210
58272490,2sleep00-21swapper/000:05:280
24024994921,3cyclictest33-21ksoftirqd/222:15:002
24024994920,3cyclictest33-21ksoftirqd/200:35:212
24024994920,3cyclictest33-21ksoftirqd/200:35:212
24024994920,3cyclictest33-21ksoftirqd/200:06:062
2402399490,12cyclictest15028-21/usr/sbin/munin21:05:161
2402399490,11cyclictest3219-21/usr/sbin/munin19:30:281
2402399490,11cyclictest20044-21users20:05:331
2402399490,10cyclictest10040-21/usr/sbin/munin23:10:151
2402299495,9cyclictest9-21ksoftirqd/019:55:140
2402299495,7cyclictest9-21ksoftirqd/021:35:220
2402299495,10cyclictest9-21ksoftirqd/023:50:240
2402299495,10cyclictest9-21ksoftirqd/000:15:260
2402299494,9cyclictest9-21ksoftirqd/019:20:240
2402299493,4cyclictest9-21ksoftirqd/022:10:270
24024994822,7cyclictest33-21ksoftirqd/221:05:242
24024994821,7cyclictest33-21ksoftirqd/220:10:242
24024994818,4cyclictest33-21ksoftirqd/220:45:122
24024994818,4cyclictest33-21ksoftirqd/219:25:192
24024994817,9cyclictest33-21ksoftirqd/221:25:232
2402499480,8cyclictest33-21ksoftirqd/219:25:012
2402399480,12cyclictest4131-21timedrift20:40:241
2402399480,12cyclictest32157-21/usr/sbin/munin19:25:181
2402399480,10cyclictest22173-21/usr/sbin/munin23:35:161
2402299485,8cyclictest9-21ksoftirqd/019:50:110
2402299485,4cyclictest9-21ksoftirqd/023:40:150
2402299484,8cyclictest9-21ksoftirqd/000:20:250
2402299483,10cyclictest9-21ksoftirqd/019:40:130
24024994720,6cyclictest33-21ksoftirqd/222:20:202
24024994719,4cyclictest33-21ksoftirqd/222:45:272
24024994716,3cyclictest33-21ksoftirqd/222:20:002
24024994715,4cyclictest33-21ksoftirqd/219:46:372
24024994712,5cyclictest33-21ksoftirqd/223:50:122
24024994712,14cyclictest33-21ksoftirqd/221:45:142
2402399470,11cyclictest19726-21sh21:15:181
2402299476,10cyclictest9-21ksoftirqd/020:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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