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2026-08-11 - 19:47
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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 Tue Aug 11, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48202234168,21sleep20-21swapper/207:06:102
48982207174,22sleep30-21swapper/307:07:113
48512204170,22sleep10-21swapper/107:06:331
48232201166,23sleep00-21swapper/007:06:120
2093621350,2sleep20-21swapper/207:40:162
209332750,2sleep10-21swapper/112:00:151
541799550,25cyclictest26040-21grep10:00:173
541799541,50cyclictest20091-21ls09:50:003
541799530,49cyclictest9873-21unixbench_multi10:30:273
134991520,3getstats13350irq/39-mmc110:20:253
541799500,24cyclictest10309-21grep09:30:133
5415994741,3cyclictest2807-21apt12:30:001
541799460,15cyclictest0-21swapper/312:20:213
5417994526,16cyclictest41-21ksoftirqd/309:40:093
541799431,24cyclictest1319-21snmpd10:17:373
5416994338,3cyclictest7581-21cron11:35:002
138491420,0ptp4l401ktimersoftd/312:12:493
138491420,0ptp4l401ktimersoftd/310:25:503
138491420,0ptp4l401ktimersoftd/308:25:303
138491420,0ptp4l401ktimersoftd/307:52:373
5416994134,4cyclictest22602-21cron08:50:012
541599412,36cyclictest22604-21cron08:50:001
138491410,0ptp4l401ktimersoftd/307:32:323
138491410,0ptp4l401ktimersoftd/307:15:503
5414994032,5cyclictest9-21ksoftirqd/010:10:000
134991400,2getstats0-21swapper/310:05:263
541799380,35cyclictest30210-21cron12:20:003
5416993832,4cyclictest33-21ksoftirqd/209:13:472
541799370,24cyclictest21487-21expr08:45:193
5415993732,3cyclictest22483-21cron07:45:011
5415993730,4cyclictest25-21ksoftirqd/111:45:001
50798370,7rtkit-daemon0-21swapper/111:52:301
5417993629,4cyclictest41-21ksoftirqd/310:38:583
5417993614,19cyclictest32767-21/usr/sbin/munin08:05:183
5417993613,20cyclictest2775-21date11:25:013
5416993632,2cyclictest418-21in:imuxsock08:02:102
5416993631,3cyclictest33-21ksoftirqd/210:00:002
5416993630,4cyclictest33-21ksoftirqd/210:39:052
5416993630,4cyclictest33-21ksoftirqd/210:33:182
5415993631,3cyclictest25-21ksoftirqd/112:39:531
5415993631,3cyclictest25-21ksoftirqd/110:15:121
5415993630,4cyclictest25-21ksoftirqd/110:26:031
5415993630,4cyclictest25-21ksoftirqd/109:29:231
5414993630,4cyclictest9-21ksoftirqd/012:29:060
5414993630,4cyclictest9-21ksoftirqd/010:21:530
5414993630,4cyclictest9-21ksoftirqd/008:48:180
5417993529,4cyclictest41-21ksoftirqd/311:09:013
5417993529,4cyclictest41-21ksoftirqd/309:57:453
5417993529,4cyclictest41-21ksoftirqd/308:32:163
5417993529,4cyclictest41-21ksoftirqd/308:20:123
5417993513,18cyclictest3030-21/usr/sbin/munin12:30:253
5417993512,20cyclictest20344-21cat12:00:003
5416993530,3cyclictest33-21ksoftirqd/212:13:432
5416993529,4cyclictest33-21ksoftirqd/212:20:382
5416993529,4cyclictest33-21ksoftirqd/211:24:382
5416993529,4cyclictest33-21ksoftirqd/209:41:232
5416993529,4cyclictest33-21ksoftirqd/209:28:192
5416993529,4cyclictest33-21ksoftirqd/208:41:022
5415993529,4cyclictest25-21ksoftirqd/110:08:141
5415993529,4cyclictest25-21ksoftirqd/109:43:581
5415993529,4cyclictest25-21ksoftirqd/109:11:051
5415993529,4cyclictest25-21ksoftirqd/107:57:071
5415993529,3cyclictest25-21ksoftirqd/109:55:001
5414993531,3cyclictest9-21ksoftirqd/010:54:070
5414993530,3cyclictest9-21ksoftirqd/011:30:100
5414993529,4cyclictest9-21ksoftirqd/012:16:140
5414993529,4cyclictest9-21ksoftirqd/011:28:590
5414993529,4cyclictest9-21ksoftirqd/011:11:550
5414993529,4cyclictest9-21ksoftirqd/010:35:420
5414993529,4cyclictest9-21ksoftirqd/007:29:300
541499352,2cyclictest121rcu_preempt11:59:540
50798350,2rtkit-daemon0-21swapper/108:20:261
5417993428,4cyclictest41-21ksoftirqd/308:12:353
5417993427,4cyclictest41-21ksoftirqd/311:38:263
541799341,21cyclictest0-21swapper/307:10:123
5417993412,19cyclictest19955-21latency_hist07:40:013
5417993412,19cyclictest16055-21if_enp1s008:35:163
5417993412,19cyclictest10727-21df_abs11:40:143
5417993411,20cyclictest16425-21irqstats11:50:183
5417993411,20cyclictest11817-21mailstats07:20:243
5417993410,21cyclictest13882-21sed07:25:203
5416993429,3cyclictest33-21ksoftirqd/210:11:012
5416993429,3cyclictest33-21ksoftirqd/207:56:272
5416993429,3cyclictest33-21ksoftirqd/207:10:112
5416993428,4cyclictest33-21ksoftirqd/211:04:272
5416993428,4cyclictest33-21ksoftirqd/210:47:222
5416993428,4cyclictest33-21ksoftirqd/208:07:272
5416993427,4cyclictest33-21ksoftirqd/209:05:472
5415993429,3cyclictest25-21ksoftirqd/112:10:591
5415993429,3cyclictest25-21ksoftirqd/107:26:101
5415993428,4cyclictest25-21ksoftirqd/111:49:061
5415993428,4cyclictest25-21ksoftirqd/111:22:231
5415993428,4cyclictest25-21ksoftirqd/110:46:411
5415993428,4cyclictest25-21ksoftirqd/109:59:191
5415993428,4cyclictest25-21ksoftirqd/108:54:491
5415993427,5cyclictest25-21ksoftirqd/108:01:291
5415993427,4cyclictest25-21ksoftirqd/109:50:001
5414993428,4cyclictest9-21ksoftirqd/012:22:280
5414993428,4cyclictest9-21ksoftirqd/011:48:580
5414993428,4cyclictest9-21ksoftirqd/009:29:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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