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2026-07-04 - 22:51
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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 Sat Jul 04, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2819023090,52sleep20-21swapper/207:05:262
283642219178,31sleep10-21swapper/107:05:591
284012205170,23sleep30-21swapper/307:06:293
284352203169,22sleep00-21swapper/007:06:530
1027821570,2sleep02897499cyclictest09:45:230
3133321450,7sleep12897599cyclictest08:19:591
497021430,6sleep02897499cyclictest07:25:190
2867929166,13sleep10-21swapper/107:10:011
2897799595,11cyclictest18741-21sshd07:54:513
302132550,2sleep30-21swapper/310:25:263
2897799556,9cyclictest24909-21irqstats09:10:193
318842540,1sleep20-21swapper/209:25:162
2897799546,9cyclictest26214-21latency_hist08:10:003
2897799527,8cyclictest1319-21snmpd11:08:033
2897799522,14cyclictest0-21swapper/307:55:223
96282500,4sleep00-21swapper/010:50:140
2897799506,7cyclictest1503-21grep10:35:153
2897799505,15cyclictest8295-21timerandwakeup10:45:273
211472490,2sleep20-21swapper/211:10:272
2897799487,15cyclictest2315-21gnome-shell11:00:583
2897799486,17cyclictest21084-21/usr/sbin/munin10:10:133
2897799485,16cyclictest4142-21latency_hist11:45:003
2897799485,15cyclictest11500-21cpuspeed07:40:133
178072480,2sleep10-21swapper/111:05:201
2897799476,7cyclictest2274-21ps07:20:173
2897799476,7cyclictest2274-21ps07:20:173
2897799474,14cyclictest1319-21snmpd09:17:413
2897799465,8cyclictest11258-21apt-get09:50:103
2897799464,7cyclictest26874-21apt-get11:25:123
2897799464,7cyclictest19740-21ls10:05:193
28975994635,7cyclictest25-21ksoftirqd/109:40:121
2897799456,8cyclictest19787-21df11:10:133
2897799454,9cyclictest8889-21apt-get08:40:123
2897799446,16cyclictest18929-21/usr/sbin/munin09:00:243
2897799445,7cyclictest21366-21apt-get12:20:033
2897799443,16cyclictest0-21swapper/311:59:263
28975994439,3cyclictest18418-21turbostat10:05:001
138491440,0ptp4l401ktimersoftd/310:33:513
50798430,8rtkit-daemon0-21swapper/111:49:461
2897799437,15cyclictest26078-21/usr/sbin/munin10:20:213
2897799436,7cyclictest9382-21perl09:45:163
2897799434,14cyclictest7521-21ls09:40:213
2897799426,15cyclictest4038-21/usr/sbin/munin07:25:233
2897799425,15cyclictest8948-21/usr/sbin/munin07:35:193
138491420,0ptp4l401ktimersoftd/311:54:573
2897799415,7cyclictest520-21ls11:35:233
28974994135,4cyclictest4126-21cron11:44:590
138491410,0ptp4l401ktimersoftd/312:05:173
2897799406,13cyclictest16186-21apt10:00:083
2897799405,13cyclictest23124-21ls08:00:263
2897799405,13cyclictest23124-21ls08:00:263
2897799404,8cyclictest32731-21ps08:20:243
2897799404,8cyclictest1319-21snmpd08:07:293
2897799403,8cyclictest14617-21ps07:45:183
28975994035,3cyclictest25-21ksoftirqd/110:00:001
28975994034,3cyclictest25-21ksoftirqd/110:15:001
28975994028,10cyclictest25-21ksoftirqd/107:50:171
2897799394,7cyclictest12924-21ls08:45:263
2897499391,35cyclictest21669-21basename11:15:010
2897799385,13cyclictest28992-21/usr/sbin/munin07:10:213
28976993833,3cyclictest33-21ksoftirqd/208:01:082
28976993833,3cyclictest33-21ksoftirqd/208:01:082
28976993833,2cyclictest33-21ksoftirqd/212:40:002
28975993833,3cyclictest25-21ksoftirqd/112:35:001
28975993832,3cyclictest25-21ksoftirqd/111:40:011
28974993833,3cyclictest26555-21dump-pmu-power12:30:000
2897799373,15cyclictest0-21swapper/309:34:513
28976993732,3cyclictest33-21ksoftirqd/211:16:592
2897699370,36cyclictest0-21swapper/211:55:332
28975993733,2cyclictest25-21ksoftirqd/110:34:591
28975993732,3cyclictest25-21ksoftirqd/112:35:441
28975993732,3cyclictest25-21ksoftirqd/111:45:001
28975993731,4cyclictest25-21ksoftirqd/108:55:111
28975993731,4cyclictest25-21ksoftirqd/108:35:011
28975993731,3cyclictest25-21ksoftirqd/110:45:001
28974993732,3cyclictest9-21ksoftirqd/008:30:190
2897799366,12cyclictest6872-21df07:30:143
2897799366,12cyclictest27361-21perl12:30:163
2897799364,6cyclictest1319-21snmpd08:37:343
28976993630,4cyclictest33-21ksoftirqd/210:38:452
28976993630,4cyclictest33-21ksoftirqd/210:00:152
28976993630,4cyclictest33-21ksoftirqd/208:22:582
28976993626,9cyclictest33-21ksoftirqd/211:25:222
28975993631,3cyclictest25-21ksoftirqd/112:05:121
28975993631,3cyclictest25-21ksoftirqd/110:25:001
28975993631,3cyclictest25-21ksoftirqd/110:10:001
28975993631,3cyclictest25-21ksoftirqd/107:34:591
28975993631,2cyclictest25-21ksoftirqd/108:29:591
28975993630,4cyclictest25-21ksoftirqd/109:09:221
28975993630,4cyclictest25-21ksoftirqd/108:20:481
28975993630,4cyclictest25-21ksoftirqd/107:28:001
28975993629,5cyclictest25-21ksoftirqd/108:54:301
28975993629,4cyclictest25-21ksoftirqd/112:25:231
2897799355,11cyclictest29580-21ps09:20:183
28977993528,4cyclictest41-21ksoftirqd/310:16:523
28976993530,3cyclictest33-21ksoftirqd/209:34:442
28976993529,4cyclictest33-21ksoftirqd/210:17:162
28976993529,4cyclictest33-21ksoftirqd/208:33:452
28976993529,4cyclictest33-21ksoftirqd/207:45:502
28976993529,4cyclictest33-21ksoftirqd/207:39:422
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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