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2026-05-27 - 19:32
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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 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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