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2026-03-15 - 06:02
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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 rackdslot1.osadl.org (updated Sun Mar 15, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158821540,2sleep2569699cyclictest21:20:122
134491690,10ptp4l241ktimersoftd/119:15:171
134491620,5ptp4l0-21swapper/023:30:210
134491620,3ptp4l31334-21apt-get23:35:043
134491590,3ptp4l25250-21iostat23:20:171
134491590,3ptp4l0-21swapper/119:10:271
134491580,5ptp4l0-21swapper/019:35:180
134491580,4ptp4l0-21swapper/222:35:032
134491570,5ptp4l0-21swapper/121:10:131
134491570,4ptp4l0-21swapper/121:31:231
134491570,3ptp4l30285-21meminfo22:20:181
134491570,3ptp4l0-21swapper/120:15:171
134491560,5ptp4l0-21swapper/100:35:151
134491560,4ptp4l0-21swapper/321:45:173
134491550,3ptp4l0-21swapper/219:40:202
134491550,3ptp4l0-21swapper/120:48:311
134491550,3ptp4l0-21swapper/120:10:201
134491540,4ptp4l0-21swapper/019:40:010
134491540,3ptp4l8835-21hddtemp_smartct20:25:171
134491540,12ptp4l0-21swapper/023:50:240
134491540,11ptp4l0-21swapper/121:00:131
134491530,3ptp4l0-21swapper/223:40:222
134491530,3ptp4l0-21swapper/122:48:111
134491530,3ptp4l0-21swapper/122:48:111
134491530,3ptp4l0-21swapper/121:47:511
134491520,5ptp4l0-21swapper/319:08:223
134491520,4ptp4l0-21swapper/222:30:022
134491520,4ptp4l0-21swapper/020:18:160
134491520,3ptp4l0-21swapper/122:30:241
134491510,4ptp4l0-21swapper/020:56:160
134491510,10ptp4l5027-21users19:05:260
134491500,4ptp4l0-21swapper/200:05:112
134491500,4ptp4l0-21swapper/123:41:511
134491500,4ptp4l0-21swapper/122:37:401
134491500,4ptp4l0-21swapper/121:40:111
134491500,4ptp4l0-21swapper/121:05:151
134491500,3ptp4l0-21swapper/123:05:181
134491500,11ptp4l3411-21/usr/sbin/munin19:05:111
282972490,6sleep30-21swapper/323:25:253
134491490,5ptp4l0-21swapper/219:08:422
134491490,4ptp4l0-21swapper/321:44:353
134491490,4ptp4l0-21swapper/200:10:072
134491490,4ptp4l0-21swapper/122:54:501
134491490,4ptp4l0-21swapper/122:44:211
134491490,4ptp4l0-21swapper/122:12:241
134491490,4ptp4l0-21swapper/121:52:231
134491490,4ptp4l0-21swapper/119:56:141
134491490,3ptp4l0-21swapper/223:34:442
134491490,3ptp4l0-21swapper/123:11:541
134491490,3ptp4l0-21swapper/121:24:261
5697994831,3cyclictest41-21ksoftirqd/300:20:153
134491480,4ptp4l0-21swapper/320:49:323
134491480,4ptp4l0-21swapper/021:31:080
134491480,3ptp4l0-21swapper/119:26:171
134491470,4ptp4l0-21swapper/220:29:222
134491470,4ptp4l0-21swapper/123:18:311
134491470,3ptp4l0-21swapper/120:59:011
134491470,3ptp4l0-21swapper/120:35:181
134491470,3ptp4l0-21swapper/120:35:181
134491470,3ptp4l0-21swapper/119:32:341
134491470,3ptp4l0-21swapper/119:22:201
134491470,3ptp4l0-21swapper/023:55:530
134491460,7ptp4l0-21swapper/023:15:020
134491460,4ptp4l0-21swapper/200:25:572
134491460,4ptp4l0-21swapper/120:51:351
134491460,4ptp4l0-21swapper/021:50:360
134491460,3ptp4l0-21swapper/120:00:341
134491460,3ptp4l0-21swapper/021:19:120
134491450,4ptp4l3780-21apt-get20:15:142
134491450,4ptp4l0-21swapper/321:53:193
134491450,4ptp4l0-21swapper/100:16:431
134491450,3ptp4l0-21swapper/120:22:341
134491450,2ptp4l5693-21cyclictest00:02:552
134491440,9ptp4l0-21swapper/022:44:060
134491440,9ptp4l0-21swapper/022:12:040
134491440,5ptp4l21736-21ntp_states00:20:230
134491440,4ptp4l101ktimersoftd/019:25:020
134491440,4ptp4l0-21swapper/121:15:351
134491440,4ptp4l0-21swapper/120:32:031
134491440,3ptp4l121rcu_preempt19:33:063
134491440,3ptp4l0-21swapper/123:48:471
134491440,3ptp4l0-21swapper/022:45:220
134491440,3ptp4l0-21swapper/022:45:220
134491440,3ptp4l0-21swapper/022:25:430
5696994338,3cyclictest33-21ksoftirqd/220:00:002
134491430,9ptp4l0-21swapper/222:43:202
134491430,9ptp4l0-21swapper/000:19:050
134491430,5ptp4l0-21swapper/022:05:260
134491430,5ptp4l0-21swapper/019:20:260
134491430,4ptp4l24687-21apt-get23:20:100
134491430,3ptp4l0-21swapper/122:55:141
134491430,3ptp4l0-21swapper/121:36:451
134491430,3ptp4l0-21swapper/120:42:461
134491430,3ptp4l0-21swapper/100:09:571
134491430,10ptp4l0-21swapper/023:05:210
134491420,9ptp4l0-21swapper/221:09:462
134491420,9ptp4l0-21swapper/220:22:502
134491420,9ptp4l0-21swapper/020:25:320
134491420,6ptp4l17963-21diskstats19:35:141
134491420,5ptp4l0-21swapper/022:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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