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2026-08-15 - 04:31
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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 Aug 15, 2026 00:49:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913140,306ptp4l0-21swapper/119:05:031
310179918413,136cyclictest0-21swapper/622:10:0028
310119917954,96cyclictest0-21swapper/522:33:4427
310119917547,126cyclictest0-21swapper/520:40:1727
310179916713,98cyclictest0-21swapper/619:55:0128
310179916713,98cyclictest0-21swapper/619:55:0128
311499916460,62cyclictest0-21swapper/2622:43:3219
31149991560,129cyclictest30661-21sed20:25:0019
311499915493,61cyclictest151rcu_preempt00:35:2419
311499915493,61cyclictest151rcu_preempt00:35:2419
310179915413,87cyclictest0-21swapper/623:29:5128
310119915430,120cyclictest0-21swapper/521:48:5027
298062150143,6sleep180-21swapper/1819:09:3310
31078991480,85cyclictest0-21swapper/1519:10:187
31078991480,85cyclictest0-21swapper/1519:10:177
31011991450,86cyclictest0-21swapper/500:35:0427
31011991450,86cyclictest0-21swapper/500:35:0327
31011991440,92cyclictest0-21swapper/500:20:2327
31011991440,92cyclictest0-21swapper/500:20:2327
31149991401,85cyclictest0-21swapper/2619:45:4519
31149991401,85cyclictest0-21swapper/2619:45:4519
31011991400,85cyclictest0-21swapper/520:39:2327
311499913933,66cyclictest0-21swapper/2600:03:4319
31078991380,76cyclictest0-21swapper/1520:20:177
310299913844,43cyclictest151rcu_preempt19:30:1630
310299913844,43cyclictest151rcu_preempt19:30:1630
311409913717,63cyclictest0-21swapper/2520:05:1618
311409913717,63cyclictest0-21swapper/2520:05:1618
310179913722,74cyclictest0-21swapper/621:13:5228
310119913742,45cyclictest0-21swapper/522:02:5427
310479913653,59cyclictest0-21swapper/1121:46:473
31021991360,88cyclictest0-21swapper/720:15:2029
310119913621,71cyclictest0-21swapper/523:42:0927
310179913413,81cyclictest0-21swapper/600:01:5728
310119913451,57cyclictest0-21swapper/522:13:2527
310479913352,66cyclictest0-21swapper/1121:29:093
310479913352,55cyclictest0-21swapper/1122:52:003
310479913328,66cyclictest0-21swapper/1120:00:433
310479913328,66cyclictest0-21swapper/1120:00:433
310179913353,57cyclictest0-21swapper/623:14:5428
310479913227,60cyclictest0-21swapper/1123:15:363
31029991320,79cyclictest0-21swapper/822:07:2330
310179913129,70cyclictest0-21swapper/600:17:5828
310179913128,69cyclictest0-21swapper/623:35:4428
310179913113,77cyclictest0-21swapper/620:30:1728
310119913147,56cyclictest0-21swapper/523:37:1927
310479913045,71cyclictest0-21swapper/1100:13:463
310479913029,67cyclictest0-21swapper/1123:14:313
310479913028,70cyclictest0-21swapper/1123:35:173
310479913028,69cyclictest0-21swapper/1123:40:363
310479913027,68cyclictest0-21swapper/1119:55:063
310479913027,68cyclictest0-21swapper/1119:55:063
310479913023,72cyclictest0-21swapper/1123:47:353
310179913030,71cyclictest0-21swapper/622:35:2028
310179913030,69cyclictest0-21swapper/622:50:1828
310179913028,69cyclictest0-21swapper/622:10:1328
310179913028,67cyclictest0-21swapper/619:40:3528
310179913028,67cyclictest0-21swapper/619:40:3528
310179913026,68cyclictest0-21swapper/621:43:2928
310179913025,67cyclictest0-21swapper/600:24:5428
310179913025,67cyclictest0-21swapper/600:24:5428
310119913049,54cyclictest0-21swapper/522:26:3127
310119913026,64cyclictest0-21swapper/522:05:1127
310479912931,75cyclictest0-21swapper/1120:52:173
310479912929,68cyclictest0-21swapper/1123:23:463
310479912929,67cyclictest0-21swapper/1123:29:563
310479912928,69cyclictest0-21swapper/1120:10:363
310479912928,69cyclictest0-21swapper/1120:10:363
310479912928,69cyclictest0-21swapper/1119:13:573
310479912928,69cyclictest0-21swapper/1119:13:573
310479912928,66cyclictest0-21swapper/1123:05:213
310479912923,62cyclictest0-21swapper/1122:22:043
31029991295,118cyclictest151rcu_preempt21:13:5730
310119912940,66cyclictest0-21swapper/521:58:5927
310119912931,61cyclictest0-21swapper/519:21:0027
310119912931,61cyclictest0-21swapper/519:20:5927
310119912927,67cyclictest0-21swapper/522:35:0627
310479912830,74cyclictest0-21swapper/1122:02:173
310479912829,70cyclictest0-21swapper/1122:56:483
310479912829,68cyclictest0-21swapper/1122:40:143
310479912826,59cyclictest0-21swapper/1100:15:233
310479912823,61cyclictest0-21swapper/1119:24:383
310479912823,61cyclictest0-21swapper/1119:24:383
310479912822,59cyclictest0-21swapper/1122:06:033
310179912829,61cyclictest0-21swapper/600:35:0428
310179912829,61cyclictest0-21swapper/600:35:0428
310179912813,82cyclictest0-21swapper/623:05:4828
310119912847,52cyclictest0-21swapper/522:45:1927
310119912845,53cyclictest0-21swapper/521:39:1227
310119912827,69cyclictest0-21swapper/523:04:1127
310119912827,66cyclictest0-21swapper/519:57:5127
310119912827,66cyclictest0-21swapper/519:57:5127
310119912827,65cyclictest0-21swapper/519:38:2627
310119912827,65cyclictest0-21swapper/519:38:2627
311789912751,52cyclictest0-21swapper/3019:21:1224
311789912751,52cyclictest0-21swapper/3019:21:1224
310479912732,75cyclictest0-21swapper/1120:45:203
310479912730,75cyclictest0-21swapper/1121:00:173
310479912726,58cyclictest0-21swapper/1119:30:323
310479912726,58cyclictest0-21swapper/1119:30:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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