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2026-03-17 - 18:15
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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 Mar 17, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236832203170,22sleep30-21swapper/307:09:243
235182200167,22sleep10-21swapper/107:07:211
236902199166,22sleep00-21swapper/007:09:290
235762198166,21sleep20-21swapper/207:08:062
2904321660,2sleep20-21swapper/207:20:132
2515021430,6sleep22402699cyclictest09:20:242
25092660,4sleep3391rcuc/310:45:213
138491660,1ptp4l32553-21grep11:45:233
24025996110,16cyclictest11886-21hddtemp_smartct10:00:141
24025996010,11cyclictest5420-21/usr/sbin/munin11:55:271
2402599598,11cyclictest20189-21fgrep09:10:231
2402599597,18cyclictest21822-21/usr/sbin/munin10:20:121
138491590,1ptp4l401ktimersoftd/311:55:253
2402599589,12cyclictest20791-21taskset10:16:141
2402599587,11cyclictest9388-21fschecks_count08:50:131
2402599586,17cyclictest26156-21apt-get09:25:111
2402599585,18cyclictest30174-21sensors11:40:251
24025995810,10cyclictest6839-21/usr/sbin/munin07:40:131
2402599578,10cyclictest5903-21/usr/sbin/munin07:35:261
2402499574,6cyclictest5611-21ps07:35:220
161232570,1sleep30-21swapper/309:05:003
2402599558,11cyclictest26032-21taskset08:18:161
2402599558,11cyclictest16333-21chrt11:15:071
2402599558,11cyclictest13196-21chrt12:13:081
2402599558,10cyclictest30733-21taskset10:37:231
2402599557,11cyclictest25610-21chrt12:39:321
2402599549,11cyclictest13865-21taskset07:54:571
2402599548,11cyclictest8438-21chrt08:47:121
2402599547,16cyclictest16713-21if_enp1s012:20:151
2402599546,18cyclictest10470-21taskset07:45:221
24025995411,16cyclictest32546-21load07:25:211
2402599539,11cyclictest23488-21cron11:30:001
2402599538,9cyclictest32454-21runrttasks09:35:221
2402599536,11cyclictest18097-21sensors08:00:231
24025995310,17cyclictest20722-21seq12:29:531
138491530,1ptp4l401ktimersoftd/308:02:143
43142520,2sleep00-21swapper/008:40:140
2402599527,9cyclictest957-21chrt10:44:301
2402599526,11cyclictest8600-21latency_hist09:55:001
2402599526,11cyclictest232152sleep109:17:291
2402599526,11cyclictest232152sleep109:17:291
2402599526,10cyclictest156872sleep112:18:331
2402599524,11cyclictest2803-21grep08:35:221
2402599515,10cyclictest39222sleep107:34:201
155142510,2sleep20-21swapper/207:55:232
2402599505,11cyclictest4819-21irqrtprio09:45:211
2402599498,11cyclictest31002-21chrt07:22:391
2402599498,10cyclictest26179-21chrt07:13:581
2402599497,13cyclictest1550-21df11:50:131
2402599497,12cyclictest21708-21iostat12:30:211
2402599496,14cyclictest17409-21memory09:05:211
2402599487,17cyclictest23095-21timedrift08:10:261
2402599487,13cyclictest27614-21memory07:15:191
2402599486,14cyclictest2520-21memory09:40:211
2402599486,13cyclictest19826-21irqstats11:20:181
24027994724,20cyclictest6488-21cron07:40:003
2402599478,11cyclictest11948-21perl08:55:181
2402599477,11cyclictest29709-21meminfo09:30:201
2402499477,5cyclictest9-21ksoftirqd/012:08:180
2402499476,5cyclictest9-21ksoftirqd/011:05:140
2402499471,7cyclictest27311-21wc11:35:210
2402499471,6cyclictest9-21ksoftirqd/010:55:130
2402599467,9cyclictest15753-21chrt09:01:171
2402599467,10cyclictest25785-21taskset11:33:011
2402599466,12cyclictest24800-21meminfo09:20:191
2402499467,5cyclictest9-21ksoftirqd/009:45:480
2402499466,5cyclictest9-21ksoftirqd/008:38:090
50798450,10rtkit-daemon0-21swapper/211:30:102
2402599458,7cyclictest5940-21chrt08:41:381
2402599458,17cyclictest8417-21runrttasks12:04:441
2402599457,11cyclictest4360-21/usr/sbin/munin10:50:141
2402499456,5cyclictest9-21ksoftirqd/010:10:580
2402499456,5cyclictest9-21ksoftirqd/009:15:260
2402499456,5cyclictest9-21ksoftirqd/009:15:260
2402499452,6cyclictest9695-21uniq07:45:150
2402499452,6cyclictest9-21ksoftirqd/007:25:200
2402499452,6cyclictest18891-21dpkg10:15:110
2402499451,6cyclictest20229-21mailstats09:10:240
2402499446,9cyclictest9-21ksoftirqd/009:25:210
2402499446,5cyclictest9-21ksoftirqd/011:40:190
2402499445,4cyclictest9-21ksoftirqd/012:24:340
2402499444,5cyclictest9-21ksoftirqd/007:57:540
2402499443,6cyclictest25771-21latency_hist12:40:000
2402499443,6cyclictest101ktimersoftd/010:20:100
24024994421,6cyclictest9-21ksoftirqd/007:40:100
2402499440,6cyclictest9-21ksoftirqd/009:25:010
2402599438,18cyclictest15987-21chrt11:13:391
2402599438,10cyclictest13622-21taskset11:09:451
2402599436,10cyclictest3425-21taskset10:48:431
2402599432,10cyclictest0-21swapper/110:10:151
2402499435,5cyclictest9-21ksoftirqd/009:30:130
2402499434,5cyclictest9-21ksoftirqd/010:38:240
2402499432,5cyclictest9-21ksoftirqd/007:20:160
2402599426,11cyclictest27554-21/usr/sbin/munin08:20:201
2402499426,6cyclictest9-21ksoftirqd/010:25:260
2402499426,5cyclictest9-21ksoftirqd/012:25:240
2402499425,5cyclictest9-21ksoftirqd/011:27:190
2402499422,6cyclictest101ktimersoftd/010:00:190
138491420,1ptp4l0-21swapper/308:05:153
138491420,0ptp4l401ktimersoftd/311:10:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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