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2025-11-19 - 22:23
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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 Nov 19, 2025 12:49:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1730899302105,30cyclictest151rcu_preempt11:55:2415
1730899301105,34cyclictest151rcu_preempt12:13:3415
1730899301104,1cyclictest151rcu_preempt09:16:4115
1730899301104,1cyclictest151rcu_preempt09:16:4115
2482912600,252ptp4l0-21swapper/107:09:351
329891186177,6phc2sys0-21swapper/207:05:2812
172819918225,125cyclictest0-21swapper/1710:52:479
172119918259,57cyclictest151rcu_preempt10:21:0428
172819917924,111cyclictest0-21swapper/1710:00:259
172819917924,111cyclictest0-21swapper/1710:00:259
17308991646,98cyclictest0-21swapper/2209:23:0615
172819916019,113cyclictest20412-21taskset07:10:149
173489915413,84cyclictest0-21swapper/2911:33:3622
173489915212,109cyclictest0-21swapper/2908:25:0122
172819915022,86cyclictest0-21swapper/1710:12:019
172819915022,86cyclictest0-21swapper/1710:12:019
172949914521,95cyclictest20232-21ssh09:18:4611
172949914521,95cyclictest20232-21ssh09:18:4611
17228991450,87cyclictest0-21swapper/908:10:1331
17281991440,87cyclictest0-21swapper/1711:14:429
17228991439,133cyclictest0-21swapper/910:15:1531
173489914112,94cyclictest0-21swapper/2909:44:2222
173489914112,94cyclictest0-21swapper/2909:44:2222
172949914148,59cyclictest0-21swapper/1909:10:4511
172949914148,59cyclictest0-21swapper/1909:10:4511
172949914129,70cyclictest0-21swapper/1907:34:3211
171799914156,59cyclictest0-21swapper/010:07:420
171799914145,63cyclictest0-21swapper/009:58:520
171799914145,63cyclictest0-21swapper/009:58:520
171799914130,63cyclictest0-21swapper/010:02:520
171799914130,63cyclictest0-21swapper/010:02:520
172949914053,62cyclictest0-21swapper/1910:57:0311
172619914016,20cyclictest0-21swapper/1411:10:236
17252991400,86cyclictest0-21swapper/1209:19:314
17252991400,86cyclictest0-21swapper/1209:19:314
172289914011,103cyclictest0-21swapper/909:34:3831
172289914011,103cyclictest0-21swapper/909:34:3831
171799914046,64cyclictest0-21swapper/012:23:410
17348991380,81cyclictest0-21swapper/2909:31:4722
17348991380,81cyclictest0-21swapper/2909:31:4622
173359913823,66cyclictest0-21swapper/2710:09:4020
172819913824,76cyclictest0-21swapper/1711:52:399
171799913853,53cyclictest0-21swapper/012:37:350
171799913831,63cyclictest0-21swapper/011:25:590
172949913725,71cyclictest0-21swapper/1907:54:5011
172029913746,59cyclictest0-21swapper/411:45:1826
172029913723,77cyclictest0-21swapper/410:51:1826
171799913752,62cyclictest0-21swapper/009:25:210
171799913752,62cyclictest0-21swapper/009:25:210
171799913729,63cyclictest0-21swapper/010:42:520
173359913629,63cyclictest0-21swapper/2710:26:1320
172949913629,63cyclictest0-21swapper/1911:40:2311
172029913649,59cyclictest0-21swapper/412:05:1326
172029913638,66cyclictest0-21swapper/410:25:2126
171799913628,66cyclictest0-21swapper/011:15:170
172949913529,60cyclictest0-21swapper/1909:05:2511
172949913529,60cyclictest0-21swapper/1909:05:2511
172949913529,59cyclictest0-21swapper/1912:38:0611
17261991351,78cyclictest0-21swapper/1408:09:146
172029913547,60cyclictest0-21swapper/410:32:0426
172029913544,60cyclictest0-21swapper/412:00:1826
172029913542,61cyclictest0-21swapper/410:40:2526
171799913552,62cyclictest0-21swapper/007:15:220
171799913532,68cyclictest0-21swapper/012:20:000
171799913530,62cyclictest0-21swapper/009:19:030
171799913530,62cyclictest0-21swapper/009:19:030
171799913529,64cyclictest0-21swapper/011:50:010
173359913429,65cyclictest0-21swapper/2711:56:3320
172819913424,74cyclictest0-21swapper/1709:28:219
172819913424,74cyclictest0-21swapper/1709:28:219
172029913442,64cyclictest0-21swapper/411:38:3426
172029913441,60cyclictest0-21swapper/408:33:5026
172029913429,61cyclictest0-21swapper/411:06:5926
172029913424,68cyclictest0-21swapper/411:26:1426
171799913433,60cyclictest0-21swapper/009:35:230
171799913433,60cyclictest0-21swapper/009:35:230
171799913430,62cyclictest0-21swapper/007:11:510
171799913427,63cyclictest0-21swapper/011:05:400
173359913328,71cyclictest0-21swapper/2711:33:0220
173359913328,64cyclictest0-21swapper/2711:15:2420
172949913329,61cyclictest0-21swapper/1911:55:2111
172819913347,62cyclictest0-21swapper/1712:37:229
1726199133131,1cyclictest0-21swapper/1412:24:086
17228991339,67cyclictest0-21swapper/911:02:1731
172029913351,66cyclictest0-21swapper/411:56:1026
172029913343,62cyclictest0-21swapper/410:02:4026
172029913343,62cyclictest0-21swapper/410:02:4026
172029913342,65cyclictest0-21swapper/407:58:0226
172029913334,66cyclictest0-21swapper/407:30:2526
171799913342,67cyclictest0-21swapper/012:30:350
171799913329,60cyclictest0-21swapper/008:40:190
171799913327,62cyclictest0-21swapper/011:10:580
173359913229,70cyclictest0-21swapper/2712:27:3320
173359913228,62cyclictest0-21swapper/2712:21:4020
173359913226,63cyclictest0-21swapper/2712:39:1820
17319991320,87cyclictest0-21swapper/2409:20:1917
172819913250,57cyclictest0-21swapper/1707:20:399
172819913246,58cyclictest0-21swapper/1709:40:089
172819913246,58cyclictest0-21swapper/1709:40:089
17228991329,92cyclictest0-21swapper/907:20:1831
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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