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2026-03-14 - 07:12
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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 rackdslot3.osadl.org (updated Sat Mar 14, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
200112203170,22sleep00-21swapper/019:07:560
139491203170,22phc2sys0-21swapper/319:09:453
199822202169,22sleep10-21swapper/119:07:311
198152202169,22sleep20-21swapper/219:05:272
2247721750,1sleep20-21swapper/220:20:172
201722165125,13sleep10-21swapper/119:10:011
2874421490,6sleep12046499cyclictest23:55:221
593221340,4sleep32046699cyclictest00:15:173
1908221170,2sleep30-21swapper/321:20:193
2046399627,11cyclictest31029-21ls19:30:180
217412610,1sleep30-21swapper/323:40:233
2046399604,17cyclictest0-21swapper/022:25:260
2046399586,18cyclictest4608-21ls20:50:190
2046399575,11cyclictest22735-21cat20:20:190
2046399543,10cyclictest0-21swapper/021:35:160
2046399525,13cyclictest5918-21ls19:45:210
2046399514,7cyclictest1147-21ls21:50:200
2046399514,7cyclictest1147-21ls21:50:200
2046399496,8cyclictest18515-21hddtemp_smartct23:35:160
2046399495,13cyclictest11946-21apt-get20:00:090
2046399484,11cyclictest12072-21latency_hist22:15:000
2046399476,8cyclictest25479-21df23:50:140
2046399476,10cyclictest1398-21grep23:00:110
2046399466,8cyclictest7576-21diskstats19:50:170
2046399466,8cyclictest12749-21hddtemp_smartct00:30:140
2046399466,7cyclictest23796-21memory23:45:200
2046399465,7cyclictest20684-21python20:15:230
2046399455,7cyclictest21139-21iostat_ios19:10:170
20465994414,28cyclictest0-21swapper/222:40:232
2046399446,7cyclictest3991-21python21:55:230
2046399446,7cyclictest1809-21iostat20:45:160
2046399445,8cyclictest7688-21diskstats00:20:180
139391440,0ptp4l401ktimersoftd/323:50:403
2046599430,42cyclictest0-21swapper/220:05:232
2046399436,8cyclictest10714-21apt21:05:090
2046399435,7cyclictest5884-21irqstats22:00:180
2046499420,40cyclictest0-21swapper/122:27:231
2046399426,8cyclictest8751-21fschecks_count21:00:140
2046399415,7cyclictest30897-21irqstats21:45:200
20464994034,3cyclictest25-21ksoftirqd/120:05:181
2046399405,7cyclictest19081-21meminfo21:20:190
2046399395,8cyclictest20815-21diskstats21:25:150
20466993817,4cyclictest41-21ksoftirqd/319:28:593
2046399386,13cyclictest16480-21meminfo21:15:190
20466993731,3cyclictest41-21ksoftirqd/322:00:233
20466993715,3cyclictest30099-21needreboot22:50:213
20466993715,3cyclictest30099-21needreboot22:50:213
20465993730,5cyclictest33-21ksoftirqd/223:06:282
20464993731,4cyclictest25-21ksoftirqd/119:18:581
2046499370,2cyclictest0-21swapper/121:32:231
20466993630,4cyclictest41-21ksoftirqd/320:15:543
20466993630,4cyclictest41-21ksoftirqd/319:31:323
20465993630,4cyclictest33-21ksoftirqd/222:17:392
20465993630,4cyclictest33-21ksoftirqd/220:17:162
20464993630,4cyclictest25-21ksoftirqd/120:50:451
20464993630,4cyclictest25-21ksoftirqd/100:01:191
20464993629,4cyclictest25-21ksoftirqd/119:50:171
20466993529,4cyclictest41-21ksoftirqd/323:11:273
20466993529,4cyclictest41-21ksoftirqd/322:18:233
20466993529,4cyclictest41-21ksoftirqd/320:54:243
20466993529,4cyclictest41-21ksoftirqd/320:36:273
20466993529,4cyclictest41-21ksoftirqd/319:16:193
20466993529,4cyclictest41-21ksoftirqd/300:37:003
20466993528,5cyclictest41-21ksoftirqd/323:48:053
20465993530,3cyclictest33-21ksoftirqd/219:40:112
20465993529,4cyclictest33-21ksoftirqd/220:14:432
20465993529,4cyclictest33-21ksoftirqd/219:33:432
20465993528,5cyclictest33-21ksoftirqd/220:25:102
20465993528,5cyclictest33-21ksoftirqd/200:09:152
20465993528,4cyclictest33-21ksoftirqd/219:16:112
20464993530,3cyclictest25-21ksoftirqd/122:31:501
20464993530,3cyclictest25-21ksoftirqd/119:35:101
20464993529,4cyclictest25-21ksoftirqd/123:13:301
20464993529,4cyclictest25-21ksoftirqd/121:45:041
20464993529,4cyclictest25-21ksoftirqd/100:29:041
20464993529,4cyclictest25-21ksoftirqd/100:17:231
2046399357,17cyclictest27546-21/usr/sbin/munin23:55:250
20463993529,4cyclictest9-21ksoftirqd/023:12:360
20466993429,3cyclictest41-21ksoftirqd/321:00:103
20466993428,4cyclictest41-21ksoftirqd/322:39:103
20466993428,4cyclictest41-21ksoftirqd/322:29:473
20466993428,4cyclictest41-21ksoftirqd/321:13:453
20466993428,4cyclictest41-21ksoftirqd/320:29:083
20466993428,4cyclictest41-21ksoftirqd/319:21:183
20466993428,4cyclictest41-21ksoftirqd/300:04:343
20465993429,3cyclictest33-21ksoftirqd/223:49:172
20465993429,3cyclictest33-21ksoftirqd/223:25:492
20465993428,4cyclictest33-21ksoftirqd/222:50:402
20465993428,4cyclictest33-21ksoftirqd/222:50:392
20465993428,4cyclictest33-21ksoftirqd/222:13:542
20465993428,4cyclictest33-21ksoftirqd/221:56:292
20465993428,4cyclictest33-21ksoftirqd/221:32:212
20465993428,4cyclictest33-21ksoftirqd/220:50:542
20465993428,4cyclictest33-21ksoftirqd/200:33:012
20464993429,3cyclictest25-21ksoftirqd/122:45:151
20464993428,4cyclictest25-21ksoftirqd/123:41:451
20464993428,4cyclictest25-21ksoftirqd/123:28:581
20464993428,4cyclictest25-21ksoftirqd/123:08:321
20464993428,4cyclictest25-21ksoftirqd/122:17:141
20464993428,4cyclictest25-21ksoftirqd/120:28:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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