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2026-08-09 - 21:36
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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 Aug 09, 2026 00:49:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
403599302105,1cyclictest151rcu_preempt00:04:403
4077991700,35cyclictest0-21swapper/1621:41:518
4077991700,35cyclictest0-21swapper/1621:41:518
40779916822,118cyclictest0-21swapper/1600:09:348
41439916628,94cyclictest0-21swapper/2621:29:2419
41439916628,94cyclictest0-21swapper/2621:29:2319
41439916528,87cyclictest0-21swapper/2622:45:1719
3273911640,156ptp4l0-21swapper/119:07:331
41439916316,123cyclictest151rcu_preempt22:35:2519
40449916032,95cyclictest0-21swapper/1223:05:164
40449916032,75cyclictest0-21swapper/1223:30:174
40449915829,84cyclictest0-21swapper/1222:45:234
41779915664,91cyclictest0-21swapper/3019:30:1724
41439915417,112cyclictest0-21swapper/2622:12:0919
41439915417,112cyclictest0-21swapper/2622:12:0919
41439915328,77cyclictest0-21swapper/2623:08:4819
41439915228,92cyclictest0-21swapper/2621:17:0619
41439915228,92cyclictest0-21swapper/2621:17:0619
41439915227,78cyclictest0-21swapper/2623:28:0419
40449915231,72cyclictest0-21swapper/1220:30:224
41439915124,81cyclictest0-21swapper/2600:25:1419
41189914725,98cyclictest151rcu_preempt23:09:4714
40449914630,54cyclictest0-21swapper/1221:40:134
40449914630,54cyclictest0-21swapper/1221:40:134
40779914517,104cyclictest112-21ksoftirqd/1623:27:138
40779914434,87cyclictest0-21swapper/1623:40:298
40779914318,111cyclictest0-21swapper/1622:13:238
40779914318,111cyclictest0-21swapper/1622:13:238
40779914260,60cyclictest0-21swapper/1621:55:148
40779914260,60cyclictest0-21swapper/1621:55:138
41439914013,85cyclictest151rcu_preempt23:35:3219
4118991400,88cyclictest0-21swapper/2122:39:2014
4118991400,83cyclictest0-21swapper/2123:00:3214
40779914066,48cyclictest0-21swapper/1620:15:178
4011991402,132cyclictest0-21swapper/821:15:4530
4011991402,132cyclictest0-21swapper/821:15:4530
41189913954,83cyclictest0-21swapper/2122:00:5114
41189913954,83cyclictest0-21swapper/2122:00:5014
4118991390,87cyclictest0-21swapper/2123:53:3714
4077991380,83cyclictest0-21swapper/1623:55:128
4044991370,86cyclictest0-21swapper/1220:05:224
40779913642,63cyclictest0-21swapper/1623:49:188
39839913622,113cyclictest0-21swapper/300:14:1023
4140991350,74cyclictest0-21swapper/2523:10:5518
40519913558,46cyclictest0-21swapper/1320:20:145
4011991352,95cyclictest0-21swapper/821:13:2430
4011991352,95cyclictest0-21swapper/821:13:2430
41779913444,56cyclictest0-21swapper/3019:22:1624
41779913426,88cyclictest0-21swapper/3021:51:2224
41779913426,88cyclictest0-21swapper/3021:51:2224
40779913447,54cyclictest0-21swapper/1622:36:558
41779913329,68cyclictest0-21swapper/3022:37:2024
41779913327,68cyclictest0-21swapper/3023:37:1124
40779913345,59cyclictest0-21swapper/1600:22:288
40779913343,57cyclictest0-21swapper/1621:45:088
40779913343,57cyclictest0-21swapper/1621:45:088
40779913341,60cyclictest0-21swapper/1621:31:568
40779913341,60cyclictest0-21swapper/1621:31:568
40779913337,62cyclictest0-21swapper/1622:30:008
39839913322,79cyclictest0-21swapper/323:31:4023
41779913246,59cyclictest0-21swapper/3021:39:0324
41779913246,59cyclictest0-21swapper/3021:39:0324
41779913228,69cyclictest0-21swapper/3023:58:3624
41779913228,68cyclictest0-21swapper/3000:25:1824
41779913227,68cyclictest0-21swapper/3021:17:1124
41779913227,68cyclictest0-21swapper/3021:17:1024
41779913226,62cyclictest0-21swapper/3000:37:2324
4140991320,88cyclictest0-21swapper/2522:30:1818
4140991320,88cyclictest0-21swapper/2522:30:1818
40779913248,53cyclictest0-21swapper/1623:54:568
40779913239,62cyclictest0-21swapper/1622:58:178
40779913228,69cyclictest0-21swapper/1623:07:238
40779913226,65cyclictest0-21swapper/1622:40:088
40779913225,64cyclictest0-21swapper/1621:50:568
40779913225,64cyclictest0-21swapper/1621:50:568
4077991320,76cyclictest0-21swapper/1623:00:258
4011991323,84cyclictest0-21swapper/822:02:3130
4011991323,84cyclictest0-21swapper/822:02:3130
4011991322,105cyclictest0-21swapper/822:27:0930
41779913131,75cyclictest0-21swapper/3000:14:2124
41779913130,71cyclictest0-21swapper/3020:46:1024
41779913129,74cyclictest0-21swapper/3023:19:0124
41779913129,69cyclictest0-21swapper/3022:45:5424
41779913129,67cyclictest0-21swapper/3022:01:3124
41779913129,67cyclictest0-21swapper/3022:01:3124
41779913128,67cyclictest0-21swapper/3000:31:1124
41779913127,64cyclictest0-21swapper/3019:15:1924
40779913139,65cyclictest0-21swapper/1621:17:498
40779913139,65cyclictest0-21swapper/1621:17:498
40779913129,69cyclictest0-21swapper/1622:21:258
40779913129,69cyclictest0-21swapper/1622:21:248
40779913127,64cyclictest0-21swapper/1600:10:268
4011991312,79cyclictest0-21swapper/822:19:3830
4011991312,79cyclictest0-21swapper/822:19:3730
39839913126,70cyclictest0-21swapper/321:31:1023
39839913126,70cyclictest0-21swapper/321:31:0923
41779913029,73cyclictest0-21swapper/3023:41:1224
41779913029,65cyclictest0-21swapper/3000:23:1024
41779913028,64cyclictest0-21swapper/3022:50:1124
41779913027,72cyclictest0-21swapper/3022:08:2924
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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