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2026-05-17 - 23:33
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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 Sun May 17, 2026 12:49:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3154199308109,1cyclictest151rcu_preempt12:05:5417
3154199308109,1cyclictest151rcu_preempt12:05:5417
314339919931,111cyclictest0-21swapper/912:38:2631
3273911760,159ptp4l0-21swapper/107:05:161
314929915231,114cyclictest0-21swapper/1710:49:319
314339915011,113cyclictest0-21swapper/907:25:0131
314929914333,109cyclictest0-21swapper/1709:20:169
314929914332,110cyclictest0-21swapper/1712:07:029
314929914332,110cyclictest0-21swapper/1712:07:029
314929914331,111cyclictest0-21swapper/1709:31:309
314929914330,25cyclictest0-21swapper/1709:41:089
313989914329,112cyclictest0-21swapper/411:15:1926
313989914329,112cyclictest0-21swapper/411:15:1926
314929914235,78cyclictest0-21swapper/1711:26:569
314929914235,78cyclictest0-21swapper/1711:26:569
314339914032,53cyclictest0-21swapper/909:18:1931
315789913953,65cyclictest0-21swapper/2911:28:1322
315789913953,65cyclictest0-21swapper/2911:28:1322
31499991391,86cyclictest0-21swapper/1811:03:2510
31499991391,86cyclictest0-21swapper/1811:03:2510
31398991390,85cyclictest0-21swapper/411:14:2826
31398991390,85cyclictest0-21swapper/411:14:2826
315789913868,45cyclictest9093-21taskset09:21:1722
315789913847,67cyclictest0-21swapper/2912:13:0722
315789913847,67cyclictest0-21swapper/2912:13:0722
314929913827,94cyclictest0-21swapper/1710:30:509
315789913745,67cyclictest0-21swapper/2912:04:3422
315789913745,67cyclictest0-21swapper/2912:04:3422
314929913735,64cyclictest0-21swapper/1712:18:009
314339913726,74cyclictest0-21swapper/912:01:0131
314339913726,74cyclictest0-21swapper/912:01:0131
314339913726,17cyclictest0-21swapper/907:35:2531
315789913645,60cyclictest0-21swapper/2909:35:5922
315789913644,60cyclictest0-21swapper/2908:36:3922
315789913640,65cyclictest0-21swapper/2911:19:4022
315789913640,65cyclictest0-21swapper/2911:19:4022
315789913630,76cyclictest0-21swapper/2910:00:5322
315789913625,64cyclictest0-21swapper/2910:31:0222
313989913622,93cyclictest0-21swapper/410:12:3026
315789913553,59cyclictest0-21swapper/2910:46:3222
315789913551,61cyclictest0-21swapper/2907:50:4322
315789913550,61cyclictest0-21swapper/2910:09:0722
315789913537,67cyclictest0-21swapper/2911:54:5722
315789913537,67cyclictest0-21swapper/2911:54:5722
315789913537,62cyclictest0-21swapper/2910:21:5722
314419913548,56cyclictest0-21swapper/1011:50:212
314419913548,56cyclictest0-21swapper/1011:50:212
314419913546,56cyclictest0-21swapper/1012:34:172
314339913536,58cyclictest0-21swapper/912:25:3731
314339913536,58cyclictest0-21swapper/912:25:3731
315789913446,58cyclictest0-21swapper/2911:21:1622
315789913446,58cyclictest0-21swapper/2911:21:1622
315789913446,57cyclictest0-21swapper/2912:06:1022
315789913446,57cyclictest0-21swapper/2912:06:1022
314419913440,64cyclictest0-21swapper/1011:14:322
314419913440,64cyclictest0-21swapper/1011:14:322
314339913424,94cyclictest0-21swapper/909:41:3231
313989913421,86cyclictest0-21swapper/410:30:5426
313759913418,69cyclictest0-21swapper/010:45:190
315789913345,63cyclictest0-21swapper/2910:27:4922
315789913331,69cyclictest0-21swapper/2911:03:3822
315789913331,69cyclictest0-21swapper/2911:03:3822
315789913329,64cyclictest0-21swapper/2908:05:0722
314419913326,65cyclictest0-21swapper/1010:17:532
315789913256,63cyclictest0-21swapper/2911:59:1322
315789913256,63cyclictest0-21swapper/2911:59:1322
315789913246,57cyclictest0-21swapper/2911:30:2122
315789913246,57cyclictest0-21swapper/2911:30:2122
315789913245,64cyclictest0-21swapper/2908:55:2222
315789913239,60cyclictest0-21swapper/2911:14:5122
315789913239,60cyclictest0-21swapper/2911:14:5122
315789913230,76cyclictest0-21swapper/2907:24:0022
315789913230,64cyclictest0-21swapper/2909:48:4922
315789913225,64cyclictest0-21swapper/2910:57:1322
315789913225,63cyclictest0-21swapper/2911:47:2822
315789913225,63cyclictest0-21swapper/2911:47:2822
314339913229,58cyclictest0-21swapper/908:48:1231
314339913223,86cyclictest0-21swapper/910:50:4631
314339913223,84cyclictest0-21swapper/910:10:2331
313989913230,67cyclictest0-21swapper/407:30:5326
313989913229,60cyclictest0-21swapper/410:08:1226
313759913217,115cyclictest0-21swapper/008:20:570
315789913159,64cyclictest0-21swapper/2910:12:5222
315789913128,64cyclictest0-21swapper/2908:40:5622
314929913127,102cyclictest0-21swapper/1711:36:019
314929913127,102cyclictest0-21swapper/1711:36:019
314419913155,64cyclictest0-21swapper/1009:55:262
314419913147,51cyclictest0-21swapper/1009:37:162
314419913128,66cyclictest0-21swapper/1011:30:022
314419913128,66cyclictest0-21swapper/1011:30:022
314419913125,66cyclictest0-21swapper/1011:20:252
314419913125,66cyclictest0-21swapper/1011:20:252
315789913061,64cyclictest0-21swapper/2910:36:5522
315789913041,67cyclictest0-21swapper/2912:24:2022
315789913041,67cyclictest0-21swapper/2912:24:2022
315789913030,78cyclictest0-21swapper/2908:19:0222
315789913030,71cyclictest0-21swapper/2911:06:1822
315789913030,71cyclictest0-21swapper/2911:06:1822
315789913030,65cyclictest0-21swapper/2909:56:1722
315789913028,65cyclictest0-21swapper/2910:42:1522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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