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2026-05-27 - 22:54
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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 rackdslot4.osadl.org (updated Wed May 27, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150752206172,22sleep30-21swapper/307:05:473
150782203168,23sleep10-21swapper/107:05:501
151262200167,22sleep20-21swapper/207:06:272
152812199166,21sleep00-21swapper/007:08:260
15699996431,5cyclictest9-21ksoftirqd/007:15:000
1570099622,11cyclictest7904-21sed10:10:011
18592610,4sleep31570299cyclictest07:45:193
1570099613,11cyclictest2858-21apt12:09:591
15699996029,5cyclictest9-21ksoftirqd/011:55:150
1570099592,11cyclictest32489-21sed10:55:271
1570099591,17cyclictest29864-21awk10:50:221
15699995930,5cyclictest9-21ksoftirqd/012:00:260
15699995928,5cyclictest9-21ksoftirqd/008:10:180
138491590,1ptp4l401ktimersoftd/309:45:113
1570099586,10cyclictest18319-21/usr/sbin/munin10:30:111
1570099573,15cyclictest0-21swapper/111:50:011
15699995753,2cyclictest9-21ksoftirqd/011:15:010
15699995725,5cyclictest9-21ksoftirqd/007:25:190
1570099562,10cyclictest15766-21latency_hist08:15:011
1570099561,11cyclictest4396-21kernelversion11:05:171
1570099560,17cyclictest0-21swapper/107:20:121
15699995628,3cyclictest9-21ksoftirqd/007:40:160
15699995627,5cyclictest9-21ksoftirqd/011:49:590
15699995625,5cyclictest9-21ksoftirqd/009:45:120
1570099555,15cyclictest2554-21users09:55:281
1570099553,10cyclictest20838-21grep09:30:121
1570099553,10cyclictest13328-21grep09:15:111
1570099551,11cyclictest7291-21grep12:15:261
15699995529,3cyclictest9-21ksoftirqd/012:25:000
15699995528,5cyclictest9-21ksoftirqd/007:20:120
15699995528,3cyclictest9-21ksoftirqd/011:05:230
15699995526,4cyclictest9-21ksoftirqd/009:20:170
15699995526,4cyclictest9-21ksoftirqd/009:15:260
15699995525,5cyclictest9-21ksoftirqd/007:45:240
15699995521,4cyclictest9-21ksoftirqd/008:00:000
170002540,7sleep01569999cyclictest11:30:200
1570099543,10cyclictest19310-21sed11:35:211
1570099543,10cyclictest12917-21/usr/sbin/munin12:30:131
1570099542,10cyclictest16721-21irqrtprio10:25:181
15699995427,4cyclictest9-21ksoftirqd/010:20:140
15699995426,4cyclictest9-21ksoftirqd/012:35:190
138491540,1ptp4l401ktimersoftd/308:21:183
1570099539,14cyclictest7329-21ptp4l09:00:241
1570099535,5cyclictest0-21swapper/109:50:001
1570099534,9cyclictest27021-21ptp4l09:40:211
1570099533,10cyclictest10628-21awk10:15:001
1570099532,11cyclictest9611-21needreboot09:05:211
1570099532,11cyclictest31680-21irqrtprio08:45:181
1570099532,10cyclictest13248-21latency_hist08:10:001
1570099531,11cyclictest9565-21switchtime12:20:261
1570099531,10cyclictest15892-21cpuspeed_turbos07:10:121
15699995325,4cyclictest9-21ksoftirqd/011:00:250
15699995321,4cyclictest9-21ksoftirqd/009:50:220
10212530,5sleep125-21ksoftirqd/107:45:131
1570099527,16cyclictest30988-21df_abs09:50:121
1570099525,6cyclictest0-21swapper/111:00:201
1570099525,6cyclictest0-21swapper/108:25:221
1570099524,9cyclictest11974-21missed_timers10:15:191
1570099522,12cyclictest14153-21sed11:25:201
1570099522,11cyclictest28405-21df_abs07:35:141
1570099522,10cyclictest3466-21df_abs12:10:141
1570099521,11cyclictest25392-21latency_hist09:40:011
1570099520,11cyclictest11624-21sed11:20:181
15699995225,4cyclictest9-21ksoftirqd/010:00:130
15699995223,7cyclictest9-21ksoftirqd/008:35:130
15699995223,6cyclictest9-21ksoftirqd/008:25:140
15699995223,3cyclictest9-21ksoftirqd/008:05:240
15699995221,6cyclictest9-21ksoftirqd/009:05:130
15699995219,3cyclictest9-21ksoftirqd/008:15:250
138491520,0ptp4l401ktimersoftd/311:27:173
1570099517,7cyclictest6286-21df_abs11:10:141
1570099514,10cyclictest15169-21seq10:20:411
1570099512,11cyclictest7029-21netstat07:55:241
1570099512,11cyclictest25689-21cpuspeed_turbos07:30:131
1570099511,10cyclictest28197-21cstates11:55:121
1570099511,10cyclictest23819-21df_abs10:40:131
15699995126,3cyclictest9-21ksoftirqd/007:50:240
15699995123,6cyclictest9-21ksoftirqd/008:45:250
15699995120,5cyclictest9-21ksoftirqd/008:20:120
1570099505,10cyclictest17059-21/usr/sbin/munin09:20:201
1570099503,9cyclictest27384-21grep08:35:241
1570099503,16cyclictest5804-21sed08:59:591
1570099502,16cyclictest484-21latency_hist07:45:001
1570099501,7cyclictest25714-21awk08:34:591
1570099501,16cyclictest22935-21latency_hist11:45:011
15699995022,4cyclictest9-21ksoftirqd/009:25:140
15699995021,3cyclictest9-21ksoftirqd/011:25:240
15699995019,4cyclictest9-21ksoftirqd/008:00:240
138491500,0ptp4l401ktimersoftd/310:15:193
1570099496,7cyclictest26286-21chrt10:45:121
1570099492,19cyclictest16001-21cut08:15:121
1570099492,16cyclictest4176-21cut07:50:191
1570099492,16cyclictest20618-21latency_hist08:25:011
1570099491,16cyclictest18016-21latency_hist11:35:011
1570099491,11cyclictest1663-21irqrtprio08:50:181
15699994927,7cyclictest9-21ksoftirqd/012:10:120
15699994924,8cyclictest9-21ksoftirqd/009:35:220
15699994922,4cyclictest9-21ksoftirqd/011:40:160
15699994920,4cyclictest9-21ksoftirqd/007:30:240
1570099486,5cyclictest0-21swapper/107:20:011
1570099484,5cyclictest0-21swapper/112:05:001
1570099482,11cyclictest11556-21sed12:25:191
1570099482,10cyclictest9953-21ls11:15:251
1569999485,3cyclictest9-21ksoftirqd/012:15:250
1569999484,7cyclictest9-21ksoftirqd/012:10:010
15699994819,9cyclictest9-21ksoftirqd/011:15:140
15699994816,4cyclictest9-21ksoftirqd/007:15:150
15699994815,4cyclictest9-21ksoftirqd/012:25:200
1570099472,16cyclictest4818-21cat10:00:251
1570099470,9cyclictest0-21swapper/109:30:011
15699994736,3cyclictest9-21ksoftirqd/010:10:000
15699994723,8cyclictest9-21ksoftirqd/008:45:000
15699994718,4cyclictest9-21ksoftirqd/009:55:190
15699994716,4cyclictest9-21ksoftirqd/011:25:000
15699994714,3cyclictest9-21ksoftirqd/011:50:110
1570099463,11cyclictest17751-21dpkg12:40:011
1569999465,3cyclictest9-21ksoftirqd/008:50:270
1569999464,3cyclictest9-21ksoftirqd/010:40:230
15699994616,4cyclictest9-21ksoftirqd/009:40:250
1569999461,5cyclictest9-21ksoftirqd/010:55:270
1570099452,16cyclictest27214-21sed11:50:251
1569999455,2cyclictest9-21ksoftirqd/008:55:230
1569999455,2cyclictest9-21ksoftirqd/007:35:190
15699994518,3cyclictest9-21ksoftirqd/011:40:000
15699994513,4cyclictest9-21ksoftirqd/009:30:120
15699994433,3cyclictest9-21ksoftirqd/009:15:000
138491440,0ptp4l401ktimersoftd/310:09:303
1570099435,5cyclictest0-21swapper/109:10:141
1569999432,3cyclictest121rcu_preempt10:50:140
1569999432,3cyclictest121rcu_preempt10:35:000
1569999431,5cyclictest9-21ksoftirqd/008:30:160
15699994315,4cyclictest9-21ksoftirqd/010:15:130
1569999431,3cyclictest9-21ksoftirqd/010:14:050
138491430,1ptp4l401ktimersoftd/310:13:133
1570099423,7cyclictest21892-21irqstats10:35:181
1569999429,4cyclictest9-21ksoftirqd/009:00:200
15699994229,4cyclictest9-21ksoftirqd/010:45:230
15699994227,8cyclictest9-21ksoftirqd/010:25:260
138491420,0ptp4l401ktimersoftd/311:16:453
15699994034,3cyclictest9-21ksoftirqd/010:30:130
15699994032,2cyclictest9-21ksoftirqd/012:30:240
1570199391,35cyclictest32759-21cron09:55:002
1570099392,8cyclictest23118-21apt-get07:25:121
1570099392,7cyclictest30057-21ls08:40:251
15701993831,5cyclictest33-21ksoftirqd/207:15:002
15702993731,4cyclictest41-21ksoftirqd/309:22:153
15701993731,4cyclictest33-21ksoftirqd/207:50:392
15702993630,4cyclictest41-21ksoftirqd/308:18:453
15701993630,4cyclictest33-21ksoftirqd/210:47:272
15701993630,4cyclictest33-21ksoftirqd/207:28:012
138491360,0ptp4l401ktimersoftd/310:20:213
15702993529,4cyclictest41-21ksoftirqd/311:46:453
15702993529,4cyclictest41-21ksoftirqd/311:40:523
15702993529,4cyclictest41-21ksoftirqd/311:08:103
15702993529,4cyclictest41-21ksoftirqd/311:02:043
15702993529,4cyclictest41-21ksoftirqd/310:42:213
15702993529,4cyclictest41-21ksoftirqd/309:38:243
15702993529,4cyclictest41-21ksoftirqd/309:02:253
15702993529,4cyclictest41-21ksoftirqd/308:35:543
15702993529,4cyclictest41-21ksoftirqd/308:32:003
15702993529,4cyclictest41-21ksoftirqd/308:13:273
15702993529,4cyclictest41-21ksoftirqd/307:23:283
15701993529,4cyclictest33-21ksoftirqd/212:26:242
15701993529,4cyclictest33-21ksoftirqd/212:20:382
15701993529,4cyclictest33-21ksoftirqd/212:05:542
15701993529,4cyclictest33-21ksoftirqd/211:44:112
15701993529,4cyclictest33-21ksoftirqd/211:17:072
15701993529,4cyclictest33-21ksoftirqd/211:09:362
15701993529,4cyclictest33-21ksoftirqd/210:06:542
15701993529,4cyclictest33-21ksoftirqd/209:38:352
15701993529,4cyclictest33-21ksoftirqd/209:34:212
15701993529,4cyclictest33-21ksoftirqd/207:15:372
138491350,0ptp4l401ktimersoftd/307:19:583
15702993429,3cyclictest982-21fschecks_count12:05:163
15702993429,3cyclictest41-21ksoftirqd/312:30:413
15702993428,4cyclictest41-21ksoftirqd/312:03:213
15702993428,4cyclictest41-21ksoftirqd/311:23:303
15702993428,4cyclictest41-21ksoftirqd/310:04:073
15702993428,4cyclictest41-21ksoftirqd/309:43:253
15702993428,4cyclictest41-21ksoftirqd/308:05:093
15702993428,4cyclictest41-21ksoftirqd/307:57:583
15702993428,4cyclictest41-21ksoftirqd/307:42:303
15701993429,3cyclictest33-21ksoftirqd/210:43:232
15701993429,3cyclictest33-21ksoftirqd/210:00:102
15701993429,3cyclictest33-21ksoftirqd/207:24:202
15701993428,4cyclictest33-21ksoftirqd/211:45:432
15701993428,4cyclictest33-21ksoftirqd/209:17:212
15701993428,4cyclictest33-21ksoftirqd/209:14:482
1570099341,4cyclictest241ktimersoftd/108:00:231
15702993328,3cyclictest41-21ksoftirqd/307:34:003
15702993327,4cyclictest41-21ksoftirqd/312:13:413
15702993327,4cyclictest41-21ksoftirqd/311:37:233
15702993327,4cyclictest41-21ksoftirqd/311:33:333
15702993327,4cyclictest41-21ksoftirqd/310:38:413
15701993329,3cyclictest33-21ksoftirqd/209:09:142
15701993328,3cyclictest33-21ksoftirqd/212:05:002
15701993328,3cyclictest33-21ksoftirqd/211:26:162
15701993328,3cyclictest33-21ksoftirqd/210:20:002
15701993327,4cyclictest33-21ksoftirqd/212:10:422
15701993327,4cyclictest33-21ksoftirqd/209:23:062
15701993327,4cyclictest33-21ksoftirqd/208:35:042
15701993327,4cyclictest33-21ksoftirqd/207:37:442
15702993228,2cyclictest41-21ksoftirqd/312:28:383
15702993226,4cyclictest41-21ksoftirqd/311:53:393
15702993225,4cyclictest41-21ksoftirqd/309:16:333
15701993227,3cyclictest33-21ksoftirqd/211:01:282
15701993227,3cyclictest33-21ksoftirqd/210:37:062
15701993227,3cyclictest33-21ksoftirqd/210:33:002
15701993226,4cyclictest33-21ksoftirqd/212:17:242
15701993226,4cyclictest33-21ksoftirqd/208:53:262
15702993125,4cyclictest41-21ksoftirqd/311:59:483
15702993125,4cyclictest41-21ksoftirqd/310:54:213
15702993125,4cyclictest41-21ksoftirqd/308:56:323
15702993125,4cyclictest41-21ksoftirqd/308:52:183
15702993125,4cyclictest41-21ksoftirqd/307:13:213
15702993124,5cyclictest41-21ksoftirqd/312:25:003
15701993125,4cyclictest33-21ksoftirqd/211:51:142
15701993125,4cyclictest33-21ksoftirqd/208:56:392
138491310,9ptp4l401ktimersoftd/308:28:283
138491310,8ptp4l401ktimersoftd/307:27:543
138491310,0ptp4l401ktimersoftd/312:35:403
138491310,0ptp4l401ktimersoftd/310:46:473
138491310,0ptp4l401ktimersoftd/310:33:333
15701993025,3cyclictest33-21ksoftirqd/211:59:382
15701993025,3cyclictest33-21ksoftirqd/210:24:462
15701993025,3cyclictest33-21ksoftirqd/209:46:582
15701993025,3cyclictest33-21ksoftirqd/208:10:002
15701993025,3cyclictest33-21ksoftirqd/207:45:002
15701993024,3cyclictest33-21ksoftirqd/210:13:232
138491300,0ptp4l401ktimersoftd/310:55:583
138491300,0ptp4l401ktimersoftd/310:26:413
138491300,0ptp4l401ktimersoftd/309:30:173
138491300,0ptp4l401ktimersoftd/309:26:333
138491300,0ptp4l401ktimersoftd/308:48:173
15702992923,4cyclictest41-21ksoftirqd/309:59:583
15702992923,4cyclictest41-21ksoftirqd/307:38:133
15701992924,3cyclictest33-21ksoftirqd/211:37:132
15701992924,3cyclictest33-21ksoftirqd/208:23:392
15701992924,3cyclictest33-21ksoftirqd/208:12:042
15701992924,3cyclictest33-21ksoftirqd/207:45:222
15701992923,4cyclictest33-21ksoftirqd/212:38:342
15701992923,4cyclictest33-21ksoftirqd/210:50:282
15701992923,4cyclictest33-21ksoftirqd/208:34:022
138491290,0ptp4l401ktimersoftd/312:17:523
138491290,0ptp4l401ktimersoftd/311:11:053
138491290,0ptp4l401ktimersoftd/308:42:033
15701992823,3cyclictest33-21ksoftirqd/211:13:002
15701992823,3cyclictest33-21ksoftirqd/210:58:162
15701992823,3cyclictest33-21ksoftirqd/209:29:452
15701992823,3cyclictest33-21ksoftirqd/208:19:182
15701992823,3cyclictest33-21ksoftirqd/207:30:392
15701992822,4cyclictest33-21ksoftirqd/209:02:242
15701992815,11cyclictest0-21swapper/211:30:232
15702992721,4cyclictest41-21ksoftirqd/309:54:533
15701992723,3cyclictest33-21ksoftirqd/208:03:482
15701992722,3cyclictest33-21ksoftirqd/211:23:322
15701992722,3cyclictest33-21ksoftirqd/209:55:462
15701992722,3cyclictest33-21ksoftirqd/208:27:042
15701992721,4cyclictest33-21ksoftirqd/212:34:462
15701992621,3cyclictest33-21ksoftirqd/207:55:332
138491260,0ptp4l401ktimersoftd/307:50:123
15701992520,3cyclictest33-21ksoftirqd/208:41:342
138491250,0ptp4l401ktimersoftd/309:10:213
138491250,0ptp4l401ktimersoftd/309:05:113
15701992418,4cyclictest33-21ksoftirqd/209:44:452
138491240,0ptp4l401ktimersoftd/308:00:203
1570199234,17cyclictest0-21swapper/210:27:242
1570199212,8cyclictest0-21swapper/208:45:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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