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2025-09-17 - 08:32
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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 Wed Sep 17, 2025 00:49:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482913410,331ptp4l0-21swapper/119:05:181
256379918920,142cyclictest0-21swapper/2122:31:1614
256379918920,123cyclictest0-21swapper/2100:01:0314
256379918820,139cyclictest0-21swapper/2122:17:5314
256259918337,146cyclictest0-21swapper/1822:40:1810
256259917836,114cyclictest0-21swapper/1823:04:5310
256259917832,98cyclictest0-21swapper/1823:32:0710
256259917232,126cyclictest0-21swapper/1819:48:4410
256259917232,126cyclictest0-21swapper/1819:48:4310
255459917233,84cyclictest0-21swapper/219:10:0112
256259916933,83cyclictest0-21swapper/1822:25:1910
256379916620,106cyclictest0-21swapper/2122:00:1614
256259916628,92cyclictest0-21swapper/1822:00:1310
256259916324,90cyclictest0-21swapper/1821:54:4910
256259916126,93cyclictest0-21swapper/1820:14:2310
256259916120,136cyclictest0-21swapper/1822:53:0510
255969914849,98cyclictest0-21swapper/1123:42:413
256259914630,63cyclictest0-21swapper/1800:05:1610
256379914520,78cyclictest0-21swapper/2122:21:3814
256259914531,58cyclictest0-21swapper/1820:55:0010
256379914416,96cyclictest0-21swapper/2122:46:1314
25611991420,87cyclictest0-21swapper/1522:50:247
256379914149,54cyclictest0-21swapper/2119:52:3214
256379914149,54cyclictest0-21swapper/2119:52:3214
25611991410,87cyclictest0-21swapper/1500:28:447
255929914147,58cyclictest0-21swapper/1020:17:292
256379913926,70cyclictest0-21swapper/2123:56:0814
255889913929,72cyclictest151rcu_preempt23:37:1131
25588991390,83cyclictest0-21swapper/923:15:2431
256379913849,58cyclictest0-21swapper/2121:36:4514
256379913831,71cyclictest0-21swapper/2123:16:0914
256379913747,58cyclictest0-21swapper/2120:25:0414
256379913652,59cyclictest0-21swapper/2123:54:0614
256379913651,55cyclictest0-21swapper/2119:20:3014
256379913651,55cyclictest0-21swapper/2119:20:2914
25637991360,80cyclictest0-21swapper/2121:17:3014
255969913637,88cyclictest0-21swapper/1121:22:093
256379913545,56cyclictest0-21swapper/2122:10:5614
256379913543,60cyclictest0-21swapper/2122:25:2614
256379913530,75cyclictest0-21swapper/2122:44:3714
256379913530,69cyclictest0-21swapper/2100:28:1814
256379913528,69cyclictest0-21swapper/2121:54:2314
256259913528,66cyclictest0-21swapper/1822:12:3010
256379913431,72cyclictest0-21swapper/2123:26:1814
256379913430,73cyclictest0-21swapper/2123:24:1014
256379913428,71cyclictest0-21swapper/2123:37:1814
256379913427,70cyclictest0-21swapper/2100:07:5814
256379913427,66cyclictest0-21swapper/2120:02:1014
256379913427,66cyclictest0-21swapper/2120:02:0914
256379913426,73cyclictest0-21swapper/2100:23:2914
256379913426,73cyclictest0-21swapper/2100:23:2814
25637991340,81cyclictest0-21swapper/2121:05:1314
25637991340,79cyclictest0-21swapper/2100:30:1314
25637991340,79cyclictest0-21swapper/2100:30:1214
256379913348,58cyclictest0-21swapper/2120:57:1114
256379913329,69cyclictest0-21swapper/2119:40:0314
256379913329,69cyclictest0-21swapper/2119:40:0214
256379913327,70cyclictest0-21swapper/2123:48:4514
25637991330,81cyclictest0-21swapper/2121:24:5914
256259913330,71cyclictest0-21swapper/1800:28:4610
256259913329,71cyclictest0-21swapper/1820:15:2810
2557099133132,0cyclictest52-21ksoftirqd/621:46:3828
256379913231,70cyclictest0-21swapper/2123:44:4614
256379913230,66cyclictest0-21swapper/2121:13:1714
256379913226,70cyclictest0-21swapper/2100:17:0514
25637991320,81cyclictest0-21swapper/2121:29:0114
256259913230,71cyclictest0-21swapper/1821:13:4110
256259913229,72cyclictest0-21swapper/1822:33:2110
256259913228,69cyclictest0-21swapper/1823:14:2910
255969913231,100cyclictest0-21swapper/1121:25:543
255929913248,53cyclictest0-21swapper/1023:20:152
255929913216,67cyclictest0-21swapper/1020:00:232
255929913216,67cyclictest0-21swapper/1020:00:232
256379913160,66cyclictest0-21swapper/2121:04:4114
256379913147,55cyclictest0-21swapper/2123:08:0714
256379913128,71cyclictest0-21swapper/2121:45:1714
256379913127,65cyclictest0-21swapper/2121:31:5614
256379913125,60cyclictest0-21swapper/2119:35:1114
256379913125,60cyclictest0-21swapper/2119:35:1114
256259913130,75cyclictest0-21swapper/1823:37:2710
256259913129,70cyclictest0-21swapper/1822:38:4010
256259913127,70cyclictest0-21swapper/1820:38:2410
256259913126,68cyclictest0-21swapper/1820:45:2310
25603991313,93cyclictest0-21swapper/1321:44:555
25603991313,74cyclictest0-21swapper/1300:13:435
255889913126,76cyclictest0-21swapper/923:49:5431
25588991310,81cyclictest0-21swapper/923:44:4931
256379913039,60cyclictest0-21swapper/2122:05:3614
25637991300,74cyclictest0-21swapper/2120:00:0214
256259913029,65cyclictest0-21swapper/1819:20:2710
256259913029,65cyclictest0-21swapper/1819:20:2610
256259913028,65cyclictest0-21swapper/1819:25:1510
256259913028,65cyclictest0-21swapper/1819:25:1410
256259913027,70cyclictest0-21swapper/1823:50:3210
25603991303,77cyclictest0-21swapper/1300:34:245
25603991303,77cyclictest0-21swapper/1300:34:245
25603991302,83cyclictest0-21swapper/1323:10:405
25592991302,46cyclictest0-21swapper/1020:45:142
25588991300,77cyclictest0-21swapper/922:30:3131
255709913040,88cyclictest0-21swapper/622:10:2628
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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