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2026-04-04 - 07:35
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackcslot8.osadl.org (updated Sat Apr 04, 2026 00:49:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912430,233ptp4l0-21swapper/119:05:231
187179919318,117cyclictest0-21swapper/021:05:150
187179919318,117cyclictest0-21swapper/021:05:150
187179918949,42cyclictest13-21ksoftirqd/021:18:370
187179918949,42cyclictest13-21ksoftirqd/021:18:370
188469916842,99cyclictest0-21swapper/2322:19:3416
188469916334,128cyclictest0-21swapper/2300:15:0316
188629915714,141cyclictest0-21swapper/2621:29:5619
188629915714,141cyclictest0-21swapper/2621:29:5619
188469915626,129cyclictest0-21swapper/2321:35:1516
18862991549,142cyclictest0-21swapper/2621:31:5219
18862991549,142cyclictest0-21swapper/2621:31:5119
188629914314,128cyclictest0-21swapper/2622:01:2819
187179914318,38cyclictest0-21swapper/023:44:590
188199914231,59cyclictest0-21swapper/1700:10:069
18819991410,82cyclictest0-21swapper/1720:47:019
18819991410,82cyclictest0-21swapper/1720:47:019
187179914118,98cyclictest0-21swapper/023:03:220
187179914118,98cyclictest0-21swapper/022:23:220
187179914118,86cyclictest0-21swapper/022:45:130
187179914118,71cyclictest0-21swapper/021:57:210
187689914029,110cyclictest64-21ksoftirqd/822:02:0230
18890991390,82cyclictest0-21swapper/3021:10:1324
18890991390,82cyclictest0-21swapper/3021:10:1324
188199913945,65cyclictest0-21swapper/1700:25:249
187179913918,76cyclictest0-21swapper/022:04:350
188199913853,59cyclictest0-21swapper/1721:08:239
188199913853,59cyclictest0-21swapper/1721:08:239
188199913852,60cyclictest0-21swapper/1723:20:139
187179913818,88cyclictest0-21swapper/022:11:590
188039913725,21cyclictest0-21swapper/1521:17:357
188039913725,21cyclictest0-21swapper/1521:17:357
18890991361,83cyclictest0-21swapper/3023:44:1024
187179913614,104cyclictest0-21swapper/019:30:080
188199913551,60cyclictest0-21swapper/1723:34:519
188199913548,57cyclictest0-21swapper/1720:51:349
188199913548,57cyclictest0-21swapper/1720:51:349
188199913544,61cyclictest0-21swapper/1723:08:409
188199913543,59cyclictest0-21swapper/1723:50:269
188199913528,62cyclictest0-21swapper/1722:11:469
188039913553,59cyclictest0-21swapper/1522:20:317
188039913547,64cyclictest0-21swapper/1522:00:137
188039913530,72cyclictest0-21swapper/1500:17:027
188039913526,68cyclictest0-21swapper/1522:40:187
187179913518,116cyclictest0-21swapper/022:36:380
188909913417,90cyclictest1338-21snmpd22:38:1124
188699913448,61cyclictest0-21swapper/2722:53:5220
188199913442,60cyclictest0-21swapper/1721:24:269
188199913428,63cyclictest0-21swapper/1722:40:209
188039913430,63cyclictest0-21swapper/1522:54:457
188039913428,70cyclictest0-21swapper/1523:49:157
188039913426,70cyclictest0-21swapper/1500:31:287
187349913448,63cyclictest0-21swapper/322:46:3123
188629913314,85cyclictest0-21swapper/2621:50:0119
188469913329,48cyclictest0-21swapper/2320:25:1416
18824991331,86cyclictest0-21swapper/1821:42:3810
18824991331,86cyclictest0-21swapper/1821:42:3810
188199913354,65cyclictest0-21swapper/1721:44:139
188199913354,65cyclictest0-21swapper/1721:44:139
188199913352,58cyclictest0-21swapper/1722:00:479
188199913350,60cyclictest0-21swapper/1700:06:569
188199913329,65cyclictest0-21swapper/1720:56:389
188199913329,65cyclictest0-21swapper/1720:56:389
188199913326,63cyclictest0-21swapper/1722:55:189
187349913339,65cyclictest0-21swapper/323:08:1123
330891132124,6phc2sys0-21swapper/219:07:2612
188629913212,100cyclictest0-21swapper/2600:17:4519
188199913235,61cyclictest0-21swapper/1700:22:259
188199913235,57cyclictest0-21swapper/1722:50:299
188199913224,74cyclictest0-21swapper/1722:16:499
188039913248,60cyclictest0-21swapper/1500:01:007
188039913248,58cyclictest0-21swapper/1523:06:307
188039913245,58cyclictest0-21swapper/1521:29:457
188039913245,58cyclictest0-21swapper/1521:29:457
188039913230,75cyclictest0-21swapper/1522:25:527
188039913230,72cyclictest0-21swapper/1521:34:507
188039913230,72cyclictest0-21swapper/1521:34:507
188039913230,70cyclictest0-21swapper/1500:35:137
188039913229,74cyclictest0-21swapper/1520:50:127
188039913229,74cyclictest0-21swapper/1520:50:127
187349913245,54cyclictest0-21swapper/321:34:5423
187349913245,54cyclictest0-21swapper/321:34:5423
187349913225,62cyclictest0-21swapper/323:32:2923
188469913122,66cyclictest0-21swapper/2300:00:0416
188199913144,56cyclictest0-21swapper/1721:39:119
188199913131,74cyclictest0-21swapper/1720:16:539
188199913131,73cyclictest0-21swapper/1721:15:539
188199913131,73cyclictest0-21swapper/1721:15:539
188199913129,68cyclictest0-21swapper/1721:26:019
188199913129,68cyclictest0-21swapper/1721:26:019
188199913129,65cyclictest0-21swapper/1721:31:549
188199913129,65cyclictest0-21swapper/1721:31:549
188199913128,68cyclictest0-21swapper/1723:35:249
188039913160,67cyclictest0-21swapper/1520:24:337
188039913146,62cyclictest0-21swapper/1520:35:157
188039913146,62cyclictest0-21swapper/1520:35:157
188039913129,61cyclictest0-21swapper/1523:33:447
188039913126,73cyclictest0-21swapper/1519:59:597
188039913126,61cyclictest0-21swapper/1521:35:387
187349913128,69cyclictest0-21swapper/322:03:4423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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