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2026-08-12 - 09:31
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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 12, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
223872206172,22sleep10-21swapper/119:06:181
225682205172,22sleep20-21swapper/219:08:402
139491204169,23phc2sys0-21swapper/319:09:193
223322201167,23sleep00-21swapper/019:05:370
139391770,1ptp4l401ktimersoftd/322:05:243
139391670,1ptp4l401ktimersoftd/322:41:043
139391670,1ptp4l401ktimersoftd/319:21:163
22965996429,3cyclictest33-21ksoftirqd/221:30:002
22965996132,8cyclictest33-21ksoftirqd/222:55:002
22965996126,5cyclictest33-21ksoftirqd/222:50:002
22965995922,7cyclictest33-21ksoftirqd/223:05:262
22965995830,7cyclictest33-21ksoftirqd/220:55:242
22965995829,7cyclictest33-21ksoftirqd/223:25:192
139391580,1ptp4l401ktimersoftd/320:15:243
139391580,1ptp4l391rcuc/322:15:223
22965995725,4cyclictest33-21ksoftirqd/219:30:242
22965995724,4cyclictest33-21ksoftirqd/220:20:002
22965995723,4cyclictest33-21ksoftirqd/223:55:202
180712570,1sleep00-21swapper/023:30:010
129152570,6sleep09-21ksoftirqd/000:25:170
22965995633,3cyclictest33-21ksoftirqd/221:55:262
22965995629,7cyclictest33-21ksoftirqd/219:25:282
22965995629,7cyclictest33-21ksoftirqd/219:25:272
22965995629,3cyclictest33-21ksoftirqd/220:10:262
22965995628,6cyclictest33-21ksoftirqd/223:40:252
22965995625,4cyclictest33-21ksoftirqd/223:35:272
22965995621,6cyclictest33-21ksoftirqd/220:25:252
22965995534,3cyclictest33-21ksoftirqd/200:20:262
22965995529,6cyclictest33-21ksoftirqd/221:40:272
22965995527,7cyclictest33-21ksoftirqd/223:20:012
22965995526,3cyclictest33-21ksoftirqd/220:40:232
22965995523,7cyclictest33-21ksoftirqd/222:40:002
22965995522,6cyclictest33-21ksoftirqd/220:30:142
22965995521,6cyclictest33-21ksoftirqd/222:05:192
22965995520,6cyclictest33-21ksoftirqd/222:25:252
22965995519,6cyclictest33-21ksoftirqd/222:10:152
22965995427,7cyclictest33-21ksoftirqd/221:05:152
22965995427,7cyclictest33-21ksoftirqd/219:50:112
22965995427,6cyclictest33-21ksoftirqd/221:25:232
22965995424,5cyclictest33-21ksoftirqd/221:35:002
22965995424,4cyclictest33-21ksoftirqd/222:40:122
22965995423,4cyclictest33-21ksoftirqd/200:15:282
22965995422,8cyclictest33-21ksoftirqd/220:20:272
22965995421,7cyclictest33-21ksoftirqd/221:00:202
22965995421,4cyclictest33-21ksoftirqd/219:10:152
22965995328,6cyclictest33-21ksoftirqd/222:55:272
22965995327,7cyclictest33-21ksoftirqd/220:50:142
22965995326,7cyclictest33-21ksoftirqd/223:50:002
22965995325,7cyclictest33-21ksoftirqd/219:15:242
22965995324,4cyclictest33-21ksoftirqd/223:50:152
22965995322,4cyclictest33-21ksoftirqd/219:35:152
22965995321,7cyclictest33-21ksoftirqd/222:20:272
22965995320,5cyclictest33-21ksoftirqd/223:30:312
22965995319,6cyclictest33-21ksoftirqd/219:55:142
22965995226,6cyclictest33-21ksoftirqd/221:50:152
22965995225,8cyclictest33-21ksoftirqd/200:30:172
22965995225,7cyclictest33-21ksoftirqd/223:20:182
22965995225,7cyclictest33-21ksoftirqd/221:20:282
22965995225,7cyclictest33-21ksoftirqd/200:25:152
22965995219,4cyclictest33-21ksoftirqd/200:35:192
22965995215,5cyclictest33-21ksoftirqd/221:10:152
2296399528,6cyclictest19669-21grep21:15:240
22963995211,5cyclictest9-21ksoftirqd/023:51:550
22963995211,5cyclictest9-21ksoftirqd/019:55:220
221382520,1sleep30-21swapper/321:20:273
22965995125,7cyclictest33-21ksoftirqd/220:00:252
22965995123,7cyclictest33-21ksoftirqd/220:05:222
22965995123,6cyclictest33-21ksoftirqd/221:35:252
22965995121,7cyclictest33-21ksoftirqd/200:15:002
22965995119,5cyclictest33-21ksoftirqd/200:00:192
22965995117,5cyclictest33-21ksoftirqd/222:30:152
22963995112,5cyclictest9-21ksoftirqd/022:53:140
22963995110,7cyclictest9-21ksoftirqd/000:33:080
22965995023,7cyclictest33-21ksoftirqd/219:20:162
22965995019,3cyclictest33-21ksoftirqd/219:40:202
22965995015,4cyclictest33-21ksoftirqd/223:00:152
22965995014,5cyclictest33-21ksoftirqd/221:45:132
2296399504,11cyclictest1899-21run-parts19:30:240
22963995010,6cyclictest9-21ksoftirqd/023:37:560
22963995010,5cyclictest9-21ksoftirqd/020:48:020
94392490,4sleep0101ktimersoftd/022:00:560
248112490,3sleep00-21swapper/021:25:290
248112490,3sleep00-21swapper/021:25:290
22965994927,11cyclictest33-21ksoftirqd/200:05:162
22965994921,4cyclictest33-21ksoftirqd/219:50:002
2296399493,10cyclictest517-21timedrift20:35:290
2296399491,11cyclictest25463-21/usr/sbin/munin20:20:220
22963994910,5cyclictest9-21ksoftirqd/020:34:140
22965994823,7cyclictest33-21ksoftirqd/222:00:242
22965994823,6cyclictest33-21ksoftirqd/220:35:282
2296399483,10cyclictest23393-21/usr/sbin/munin19:10:150
2296399480,11cyclictest15191-21df22:15:160
22965994718,5cyclictest33-21ksoftirqd/221:15:142
2296499473,6cyclictest207-21systemd-journal21:10:461
2296399470,11cyclictest5951-21cut21:55:190
241762460,2sleep30-21swapper/323:40:233
2296699464,39cyclictest3636-21turbostat20:45:013
22964994640,3cyclictest25211-21cron23:45:001
2296499461,6cyclictest25-21ksoftirqd/119:40:191
2296399462,11cyclictest6087-21/usr/sbin/munin00:10:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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