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2026-09-06 - 20:33
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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 highest latencies:
System rackdslot2.osadl.org (updated Sun Sep 06, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25252234168,22sleep20-21swapper/207:09:292
23172224166,19sleep00-21swapper/007:07:100
23012206172,22sleep10-21swapper/107:06:581
23032204171,22sleep30-21swapper/307:07:003
2602921650,3sleep0288099cyclictest12:25:260
288099669,16cyclictest926-21awk10:25:260
288099613,16cyclictest7417-21/usr/sbin/munin09:35:270
288099612,17cyclictest20411-21apt-get11:10:020
2882996022,6cyclictest33-21ksoftirqd/210:50:012
2882995924,7cyclictest33-21ksoftirqd/209:40:192
2882995822,4cyclictest33-21ksoftirqd/212:10:242
2882995725,4cyclictest33-21ksoftirqd/212:04:592
2882995724,4cyclictest33-21ksoftirqd/210:45:002
2882995622,5cyclictest33-21ksoftirqd/209:10:252
2882995527,3cyclictest33-21ksoftirqd/211:05:192
139291550,1ptp4l391rcuc/308:00:363
2882995430,6cyclictest33-21ksoftirqd/207:55:232
2882995423,4cyclictest33-21ksoftirqd/211:00:222
2882995421,4cyclictest33-21ksoftirqd/208:05:002
288399531,5cyclictest401ktimersoftd/309:20:003
2882995339,3cyclictest33-21ksoftirqd/210:15:012
2882995322,4cyclictest33-21ksoftirqd/209:25:172
2882995320,4cyclictest33-21ksoftirqd/209:50:232
288099532,11cyclictest18530-21grep09:55:240
288099532,10cyclictest26780-21latency_hist08:00:010
288099531,11cyclictest0-21swapper/012:40:010
2882995225,4cyclictest33-21ksoftirqd/212:37:592
2882995223,3cyclictest33-21ksoftirqd/207:15:002
2882995223,3cyclictest33-21ksoftirqd/207:15:002
2882995222,4cyclictest33-21ksoftirqd/208:20:182
2882995221,3cyclictest33-21ksoftirqd/211:10:272
2882995220,4cyclictest33-21ksoftirqd/208:45:192
288099522,16cyclictest15985-21awk07:35:220
288099522,11cyclictest1377-21latency_hist08:15:000
131882520,1sleep00-21swapper/012:00:180
288399511,8cyclictest9456-21grep07:20:273
288399511,7cyclictest2833-21grep11:40:153
288399511,7cyclictest2833-21grep11:40:153
288299516,3cyclictest33-21ksoftirqd/211:40:172
288299516,3cyclictest33-21ksoftirqd/211:40:172
2882995123,9cyclictest33-21ksoftirqd/209:35:252
2882995119,4cyclictest33-21ksoftirqd/212:20:272
2882995119,10cyclictest33-21ksoftirqd/208:10:182
2882995118,9cyclictest33-21ksoftirqd/211:45:172
2882995118,5cyclictest33-21ksoftirqd/208:05:132
2882995118,10cyclictest33-21ksoftirqd/207:30:252
2882995117,9cyclictest33-21ksoftirqd/212:25:282
288099514,15cyclictest13245-21irqrtprio09:45:200
139291510,0ptp4l391rcuc/307:59:203
288399503,8cyclictest28166-21df_abs09:10:163
288399501,6cyclictest30481-21phc2sys08:05:223
288399501,5cyclictest18213-21kernelversion12:10:203
2882995018,9cyclictest33-21ksoftirqd/211:30:002
2882995017,9cyclictest33-21ksoftirqd/208:55:272
2882995017,9cyclictest33-21ksoftirqd/207:15:152
2882995016,4cyclictest33-21ksoftirqd/207:45:142
288099503,15cyclictest23609-21ls12:20:260
288399491,7cyclictest24246-21/usr/sbin/munin10:10:233
288399491,7cyclictest19810-21grep07:45:133
288399491,6cyclictest18403-21cat11:05:133
2883994916,3cyclictest41-21ksoftirqd/308:17:033
288399490,6cyclictest401ktimersoftd/310:05:243
2882994924,9cyclictest33-21ksoftirqd/210:34:592
2882994918,8cyclictest33-21ksoftirqd/208:40:242
2882994915,10cyclictest33-21ksoftirqd/209:00:142
2882994914,9cyclictest33-21ksoftirqd/211:35:262
2882994914,3cyclictest33-21ksoftirqd/208:50:242
288099492,11cyclictest1629-21apt-get08:15:120
288099492,11cyclictest10023-21cat11:55:010
288399483,10cyclictest11778-21sed11:55:273
288399481,6cyclictest7274-21sed09:35:003
2883994814,9cyclictest41-21ksoftirqd/308:56:293
288399480,6cyclictest13523-21/usr/sbin/munin10:55:153
288399480,5cyclictest401ktimersoftd/310:25:133
288299482,3cyclictest33-21ksoftirqd/209:15:262
2882994818,4cyclictest33-21ksoftirqd/209:20:192
2882994816,8cyclictest33-21ksoftirqd/211:50:202
2882994816,4cyclictest33-21ksoftirqd/212:05:132
2882994813,11cyclictest33-21ksoftirqd/209:30:272
2882994812,5cyclictest33-21ksoftirqd/212:35:012
288399472,7cyclictest30688-21awk10:20:263
2883994715,8cyclictest41-21ksoftirqd/312:35:133
288399470,7cyclictest401ktimersoftd/310:40:153
288399470,7cyclictest401ktimersoftd/308:35:163
288299473,41cyclictest13550irq/39-mmc110:55:012
288299472,3cyclictest33-21ksoftirqd/209:05:232
2882994717,9cyclictest33-21ksoftirqd/208:35:002
2882994715,9cyclictest33-21ksoftirqd/209:45:152
2882994714,4cyclictest33-21ksoftirqd/210:25:252
288399463,7cyclictest41-21ksoftirqd/312:25:003
288399463,5cyclictest41-21ksoftirqd/309:50:143
288399463,5cyclictest401ktimersoftd/311:30:233
288399463,5cyclictest0-21swapper/307:50:153
288399463,4cyclictest41-21ksoftirqd/307:40:153
288399461,7cyclictest28141-21awk12:30:213
2883994615,6cyclictest41-21ksoftirqd/309:48:013
2883994614,8cyclictest41-21ksoftirqd/308:54:053
288399460,7cyclictest401ktimersoftd/312:15:213
288399460,7cyclictest401ktimersoftd/307:25:243
288399460,7cyclictest11477-21cat09:40:253
288399460,5cyclictest401ktimersoftd/312:05:243
288399460,5cyclictest401ktimersoftd/311:45:123
288399460,5cyclictest24157-21latency_hist12:25:003
2882994635,7cyclictest33-21ksoftirqd/210:20:012
288299463,3cyclictest121rcu_preempt11:15:162
288299462,3cyclictest33-21ksoftirqd/207:20:132
2882994613,9cyclictest33-21ksoftirqd/207:50:182
2882994611,4cyclictest33-21ksoftirqd/211:30:162
288399452,6cyclictest24593-21cat09:00:243
288399452,4cyclictest41-21ksoftirqd/310:50:003
2883994515,7cyclictest41-21ksoftirqd/307:13:003
2883994515,7cyclictest41-21ksoftirqd/307:13:003
288399451,10cyclictest7528-21cpuspeed_turbos09:35:133
288399450,6cyclictest2374-21cat09:25:003
288399450,5cyclictest401ktimersoftd/308:40:163
288399450,42cyclictest401ktimersoftd/311:50:173
2882994530,6cyclictest33-21ksoftirqd/207:25:232
288299451,3cyclictest121rcu_preempt11:55:162
2882994511,9cyclictest33-21ksoftirqd/210:55:262
288099454,7cyclictest17923-21iostat12:10:180
288099452,9cyclictest0-21swapper/009:00:220
288099452,6cyclictest22536-21iostat_ios10:05:180
288099450,7cyclictest20896-21ls07:45:210
288399444,7cyclictest41-21ksoftirqd/311:25:013
288399443,6cyclictest2071-21perl10:30:153
288399441,5cyclictest401ktimersoftd/308:15:003
2883994415,8cyclictest41-21ksoftirqd/311:29:393
288399440,6cyclictest20374-21irqrtprio10:00:193
288399440,5cyclictest401ktimersoftd/311:00:163
288399440,5cyclictest401ktimersoftd/308:25:163
288299448,8cyclictest33-21ksoftirqd/210:20:162
288299448,8cyclictest33-21ksoftirqd/210:05:162
288299444,3cyclictest33-21ksoftirqd/211:20:262
288299443,3cyclictest33-21ksoftirqd/209:55:132
2882994411,9cyclictest33-21ksoftirqd/207:35:232
2882994410,10cyclictest33-21ksoftirqd/212:15:142
288099443,7cyclictest17723-21df07:40:150
288399433,7cyclictest20713-21apt-config11:10:013
288399433,11cyclictest4203-21tr08:20:123
288399430,5cyclictest401ktimersoftd/312:00:223
288399430,5cyclictest401ktimersoftd/308:45:163
288299437,9cyclictest33-21ksoftirqd/208:15:192
2882994322,6cyclictest33-21ksoftirqd/208:29:462
2882994320,4cyclictest33-21ksoftirqd/207:41:562
288299430,3cyclictest121rcu_preempt10:35:132
288099433,8cyclictest14651-21memory08:40:210
288399422,4cyclictest0-21swapper/309:25:163
2883994215,8cyclictest41-21ksoftirqd/307:34:183
2883994214,8cyclictest41-21ksoftirqd/309:07:253
2882994221,7cyclictest33-21ksoftirqd/208:37:522
288299420,2cyclictest121rcu_preempt10:00:202
288399411,5cyclictest41-21ksoftirqd/307:35:143
2883994115,8cyclictest41-21ksoftirqd/307:19:353
288099413,8cyclictest9311-21users11:50:260
288099413,8cyclictest5439-21df11:45:130
288099413,7cyclictest8375-21iostat_ios07:20:190
288099411,7cyclictest28078-21ls12:30:210
288099410,7cyclictest30930-21ls08:05:260
139291410,0ptp4l401ktimersoftd/310:51:143
288399400,5cyclictest401ktimersoftd/310:35:143
2881994035,3cyclictest25-21ksoftirqd/108:19:591
288099403,7cyclictest23583-21python07:50:240
288099402,7cyclictest29939-21irqstats10:20:190
288099402,7cyclictest2220-21iostat_ios10:30:170
288099401,8cyclictest25498-21ps10:10:250
288399394,7cyclictest24778-21sed11:15:263
288399390,5cyclictest401ktimersoftd/310:15:263
288399390,5cyclictest401ktimersoftd/308:30:213
2881993934,3cyclictest25-21ksoftirqd/108:00:011
288099393,8cyclictest7421-21irqstats08:25:190
288099392,7cyclictest9372-21hddtemp_smartct08:30:160
288399380,7cyclictest19187-21sshd09:59:223
2881993833,3cyclictest25-21ksoftirqd/110:20:011
2881993832,4cyclictest25-21ksoftirqd/111:20:361
2881993832,3cyclictest25-21ksoftirqd/107:10:101
2881993832,3cyclictest25-21ksoftirqd/107:10:101
2881993831,4cyclictest25-21ksoftirqd/111:05:031
288099384,8cyclictest26663-21meminfo11:20:210
2880993831,4cyclictest9-21ksoftirqd/008:20:470
2881993731,3cyclictest25-21ksoftirqd/109:55:181
2881993730,4cyclictest25-21ksoftirqd/112:00:321
2881993728,5cyclictest25-21ksoftirqd/107:30:111
2880993731,3cyclictest9-21ksoftirqd/009:17:000
2880993730,4cyclictest9-21ksoftirqd/010:54:520
41298360,2rtkit-daemon0-21swapper/111:55:031
2881993632,2cyclictest25-21ksoftirqd/109:30:001
2881993631,3cyclictest25-21ksoftirqd/108:45:191
2881993630,4cyclictest25-21ksoftirqd/112:29:591
2881993630,4cyclictest25-21ksoftirqd/108:51:491
2881993630,4cyclictest25-21ksoftirqd/107:45:451
2881993629,4cyclictest25-21ksoftirqd/111:15:391
288099365,5cyclictest0-21swapper/012:15:230
2880993630,4cyclictest9-21ksoftirqd/009:22:130
2880993629,4cyclictest9-21ksoftirqd/010:45:210
2883993529,4cyclictest41-21ksoftirqd/311:37:383
2881993530,3cyclictest25-21ksoftirqd/111:55:011
2881993530,2cyclictest25-21ksoftirqd/108:10:181
2881993529,4cyclictest25-21ksoftirqd/112:24:501
2881993529,4cyclictest25-21ksoftirqd/112:05:091
2881993529,4cyclictest25-21ksoftirqd/111:27:461
2881993529,4cyclictest25-21ksoftirqd/110:47:591
2881993529,4cyclictest25-21ksoftirqd/109:11:301
2881993529,4cyclictest25-21ksoftirqd/108:56:141
2881993529,4cyclictest25-21ksoftirqd/107:44:531
2881993529,3cyclictest25-21ksoftirqd/109:46:591
2881993529,3cyclictest25-21ksoftirqd/107:38:511
2880993529,4cyclictest9-21ksoftirqd/009:29:230
2880993529,4cyclictest9-21ksoftirqd/007:32:570
2880993528,4cyclictest9-21ksoftirqd/007:28:270
41298340,2rtkit-daemon0-21swapper/011:26:420
2881993429,3cyclictest25-21ksoftirqd/112:15:101
2881993429,3cyclictest25-21ksoftirqd/107:15:201
2881993428,4cyclictest25-21ksoftirqd/110:32:021
2881993428,4cyclictest25-21ksoftirqd/109:42:271
2881993428,3cyclictest25-21ksoftirqd/109:00:461
2881993428,3cyclictest25-21ksoftirqd/108:05:181
2881993427,4cyclictest25-21ksoftirqd/111:47:561
2881993427,4cyclictest25-21ksoftirqd/109:33:331
2881993427,4cyclictest25-21ksoftirqd/109:08:411
2880993429,3cyclictest9-21ksoftirqd/009:34:250
2880993428,4cyclictest9-21ksoftirqd/011:07:030
2880993427,4cyclictest9-21ksoftirqd/011:30:590
2881993328,3cyclictest25-21ksoftirqd/110:43:041
2881993328,3cyclictest25-21ksoftirqd/109:55:001
2881993328,3cyclictest25-21ksoftirqd/108:00:191
2881993327,4cyclictest25-21ksoftirqd/110:52:111
2881993327,4cyclictest25-21ksoftirqd/107:24:311
2881993326,4cyclictest25-21ksoftirqd/112:38:181
2881993326,4cyclictest25-21ksoftirqd/111:41:541
2881993326,4cyclictest25-21ksoftirqd/111:41:531
2881993326,4cyclictest25-21ksoftirqd/108:24:091
2881993326,4cyclictest25-21ksoftirqd/107:53:561
2880993327,4cyclictest9-21ksoftirqd/011:04:430
2880993326,4cyclictest9-21ksoftirqd/009:07:200
110252330,6sleep111024-21sed08:35:001
2881993227,3cyclictest25-21ksoftirqd/111:03:591
2881993227,3cyclictest25-21ksoftirqd/110:29:281
2881993227,3cyclictest25-21ksoftirqd/109:38:371
2881993227,3cyclictest25-21ksoftirqd/108:38:161
2881993227,3cyclictest25-21ksoftirqd/108:28:091
2881993226,4cyclictest25-21ksoftirqd/110:38:001
2881993226,3cyclictest25-21ksoftirqd/109:15:351
2881993225,4cyclictest25-21ksoftirqd/111:35:441
2881993225,4cyclictest25-21ksoftirqd/107:28:401
2880993227,3cyclictest9-21ksoftirqd/008:52:200
2880993226,4cyclictest9-21ksoftirqd/010:40:430
2881993126,3cyclictest25-21ksoftirqd/110:21:501
2881993126,3cyclictest25-21ksoftirqd/110:04:121
2881993125,3cyclictest25-21ksoftirqd/111:33:391
2881993125,3cyclictest25-21ksoftirqd/110:10:201
288099314,9cyclictest20549-21memory10:00:220
288099314,6cyclictest0-21swapper/009:45:000
2880993125,4cyclictest9-21ksoftirqd/009:53:140
2880993125,4cyclictest9-21ksoftirqd/008:48:430
2880993125,4cyclictest9-21ksoftirqd/008:39:510
2881993025,3cyclictest25-21ksoftirqd/111:14:301
2881993025,3cyclictest25-21ksoftirqd/110:57:561
2880993025,3cyclictest9-21ksoftirqd/011:41:290
2880993025,3cyclictest9-21ksoftirqd/011:41:290
2880993025,3cyclictest9-21ksoftirqd/011:19:150
2881992924,3cyclictest25-21ksoftirqd/108:40:131
2881992923,4cyclictest25-21ksoftirqd/112:13:401
2881992824,3cyclictest25-21ksoftirqd/109:20:191
2880992823,3cyclictest9-21ksoftirqd/008:56:570
2880992822,4cyclictest9-21ksoftirqd/011:38:360
2881992723,3cyclictest25-21ksoftirqd/110:05:081
2881992722,3cyclictest25-21ksoftirqd/112:30:251
2880992722,3cyclictest9-21ksoftirqd/010:15:110
2880992722,3cyclictest9-21ksoftirqd/007:10:100
2880992722,3cyclictest9-21ksoftirqd/007:10:100
2880992621,3cyclictest9-21ksoftirqd/012:09:490
2880992620,4cyclictest9-21ksoftirqd/010:36:530
2880992518,4cyclictest9-21ksoftirqd/009:13:420
288099250,9cyclictest0-21swapper/010:55:200
2880992318,3cyclictest9-21ksoftirqd/007:16:160
2880992115,4cyclictest9-21ksoftirqd/008:00:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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