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2026-04-03 - 22:10
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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 Fri Apr 03, 2026 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74421970,6sleep1705-21execl07:06:491
86021900,5sleep0838-21execl07:07:450
79721750,3sleep3391rcuc/307:07:113
84521740,5sleep2836-21execl07:07:352
1563821730,6sleep1141199cyclictest09:10:211
1597821670,6sleep0141099cyclictest07:28:100
841521460,4sleep341-21ksoftirqd/307:27:563
1560621240,3sleep00-21swapper/009:10:200
35132760,4sleep23482-21sh07:27:052
119972650,4sleep312003-21spawn07:20:473
198162640,6sleep119814-21sort07:29:471
134491640,3ptp4l1301-21snmpd10:58:043
134491610,3ptp4l0-21swapper/008:25:000
134491600,5ptp4l0-21swapper/109:40:161
134491590,3ptp4l841-21/usr/sbin/munin09:50:310
134491590,3ptp4l0-21swapper/208:55:172
134491580,21ptp4l5291-21users12:15:272
83722570,3sleep18390-21spawn07:20:371
299462570,6sleep2141299cyclictest07:24:242
134491570,4ptp4l24036-21apt-get10:40:121
134491550,3ptp4l3888-21tail08:45:222
134491550,3ptp4l3687-21fstime07:14:551
134491550,3ptp4l0-21swapper/112:10:161
134491550,19ptp4l1317-21runrttasks12:23:000
141099547,4cyclictest9-21ksoftirqd/007:23:550
134491540,4ptp4l31034-21cpuspeed_turbos10:55:131
134491540,4ptp4l0-21swapper/309:55:013
134491540,4ptp4l0-21swapper/210:08:092
134491540,4ptp4l0-21swapper/007:54:580
134491540,3ptp4l0-21swapper/211:07:092
134491540,2ptp4l0-21swapper/008:25:360
134491530,3ptp4l0-21swapper/108:00:231
134491520,4ptp4l0-21swapper/208:23:312
134491510,4ptp4l0-21swapper/208:18:122
134491510,4ptp4l0-21swapper/107:35:151
134491500,4ptp4l0-21swapper/208:11:432
134491500,4ptp4l0-21swapper/111:13:111
134491500,3ptp4l0-21swapper/308:30:183
134491490,4ptp4l0-21swapper/111:28:501
134491490,4ptp4l0-21swapper/012:25:420
134491490,4ptp4l0-21swapper/011:15:460
134491490,3ptp4l0-21swapper/208:34:072
109552490,3sleep310951-21find07:50:233
134491480,4ptp4l0-21swapper/209:02:412
134491480,4ptp4l0-21swapper/112:33:271
134491480,4ptp4l0-21swapper/111:44:241
134491480,4ptp4l0-21swapper/107:51:051
134491480,4ptp4l0-21swapper/008:56:210
134491470,4ptp4l16773-21taskset11:34:341
134491470,4ptp4l0-21swapper/311:54:453
134491470,4ptp4l0-21swapper/311:41:463
134491470,4ptp4l0-21swapper/210:25:002
134491470,4ptp4l0-21swapper/009:19:410
134491470,12ptp4l0-21swapper/210:55:142
1410994618,4cyclictest9-21ksoftirqd/009:40:530
1410994618,4cyclictest9-21ksoftirqd/009:05:000
134491460,9ptp4l0-21swapper/209:05:172
134491460,4ptp4l0-21swapper/109:36:381
134491460,3ptp4l0-21swapper/210:52:552
134491460,3ptp4l0-21swapper/208:36:272
134491460,3ptp4l0-21swapper/208:36:262
134491460,3ptp4l0-21swapper/108:10:001
1410994513,6cyclictest9-21ksoftirqd/010:20:000
134491450,9ptp4l0-21swapper/208:05:562
134491450,4ptp4l7439-21ls12:20:263
134491450,4ptp4l0-21swapper/008:03:080
134491450,4ptp4l0-21swapper/007:43:530
134491440,9ptp4l0-21swapper/310:45:303
134491440,9ptp4l0-21swapper/010:58:580
134491440,4ptp4l24394-21apt-get11:50:122
134491440,4ptp4l0-21swapper/308:50:093
134491440,4ptp4l0-21swapper/210:25:192
134491440,4ptp4l0-21swapper/112:05:021
134491440,4ptp4l0-21swapper/107:15:241
134491440,4ptp4l0-21swapper/011:49:370
134491440,4ptp4l0-21swapper/007:10:590
134491440,3ptp4l3465-21fstime07:13:123
134491440,3ptp4l0-21swapper/109:18:351
134491440,11ptp4l0-21swapper/010:45:270
134491440,10ptp4l0-21swapper/211:43:592
134491440,10ptp4l0-21swapper/008:31:370
1413994337,3cyclictest41-21ksoftirqd/309:40:003
1413994330,6cyclictest41-21ksoftirqd/308:25:183
141399430,3cyclictest134491ptp4l07:17:233
1410994314,7cyclictest9-21ksoftirqd/007:58:470
134491430,9ptp4l0-21swapper/210:42:112
134491430,5ptp4l10248-21iostat_ios07:50:172
134491430,5ptp4l0-21swapper/108:25:231
134491430,4ptp4l7383-21apt-get07:45:112
134491430,4ptp4l16250-21ls10:20:260
134491430,4ptp4l11976-21apt-get07:55:112
134491430,4ptp4l0-21swapper/011:37:310
134491430,4ptp4l0-21swapper/008:40:210
134491430,3ptp4l0-21swapper/112:03:461
134491430,3ptp4l0-21swapper/108:17:511
134491430,3ptp4l0-21swapper/011:56:580
1413994237,3cyclictest41-21ksoftirqd/309:30:003
1413994236,3cyclictest41-21ksoftirqd/307:30:053
134691420,11getstats0-21swapper/110:32:071
134691420,11getstats0-21swapper/110:01:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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