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2026-06-24 - 14:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rack0slot6s.osadl.org (updated Wed Jun 24, 2026 00:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40156422220203,10sleep100-21swapper/1019:05:252
41111562640,0sleep150-21swapper/1520:59:197
187098510,48rtkit-daemon0-21swapper/1119:08:093
4016600995024,3cyclictest3377361-21thunderbird19:43:0111
401593924842,3sleep60-21swapper/619:08:2116
401601924742,3sleep150-21swapper/1519:09:097
401570924438,3sleep20-21swapper/219:05:5612
205199440,0ntpd0-21swapper/423:27:5314
205199440,0ntpd0-21swapper/423:27:5214
401609824337,3sleep180-21swapper/1819:09:5310
401598824339,2sleep120-21swapper/1219:08:464
401597324339,2sleep30-21swapper/319:08:3713
205199430,37ntpd0-21swapper/119:05:191
4016560994215,27cyclictest851irq_work/722:59:2617
4016546994230,11cyclictest0-21swapper/300:28:2913
401654699420,0cyclictest0-21swapper/300:20:4013
4016582994111,29cyclictest4106595-40tracker-miner-f20:52:596
4016562994140,1cyclictest4158070-40tracker-miner-f21:55:0118
401599324136,3sleep160-21swapper/1619:08:518
4016593994011,28cyclictest3377361-21thunderbird22:59:269
4016590994040,0cyclictest0-21swapper/1623:50:338
4016590994038,1cyclictest0-21swapper/1619:59:318
4016582994032,8cyclictest3377361-21thunderbird22:58:216
4016576994031,8cyclictest0-21swapper/1221:28:524
4016546994031,9cyclictest0-21swapper/323:29:4513
4016546994031,9cyclictest0-21swapper/323:29:4413
401654699400,32cyclictest4128361-40tracker-miner-f21:20:1513
4016543994018,21cyclictest0-21swapper/220:24:3812
4016543994018,21cyclictest0-21swapper/220:24:3712
4016540994013,26cyclictest311irq_work/121:28:351
401609924034,3sleep190-21swapper/1919:09:5311
401592524035,3sleep140-21swapper/1419:08:086
401581624037,2sleep40-21swapper/419:06:5814
401659399390,38cyclictest3377361-21thunderbird20:59:179
4016582993931,8cyclictest0-21swapper/1419:29:246
401658299390,33cyclictest0-21swapper/1400:12:346
4016576993929,9cyclictest3379382-21firefox00:20:404
401657099390,0cyclictest0-21swapper/1021:19:522
4016566993938,1cyclictest3379774-21Socket08:26:5419
4016546993931,8cyclictest0-21swapper/300:08:0613
4016546993930,8cyclictest4051307-40tracker-miner-f19:49:2913
4016576993829,8cyclictest0-21swapper/1222:41:414
4016572993838,0cyclictest0-21swapper/1123:50:333
4016572993837,0cyclictest0-21swapper/1119:59:303
4016540993837,1cyclictest3379433-21Socket08:26:541
401653699380,1cyclictest3379433-21Socket08:26:540
401610323833,3sleep00-21swapper/019:09:550
401589223835,2sleep90-21swapper/919:07:4319
401659799370,36cyclictest53676-40tracker-miner-f23:38:5910
401659799370,36cyclictest53676-40tracker-miner-f23:38:5810
401659799370,36cyclictest3377361-21thunderbird21:40:0310
4016590993735,1cyclictest0-21swapper/1623:15:228
4016582993730,7cyclictest0-21swapper/1421:19:516
4016582993728,9cyclictest0-21swapper/1421:33:456
401658299370,0cyclictest0-21swapper/1421:54:416
4016576993729,7cyclictest0-21swapper/1220:59:444
401657699370,1cyclictest0-21swapper/1220:24:384
401657699370,1cyclictest0-21swapper/1220:24:374
401657299370,33cyclictest3377361-21thunderbird22:02:013
401657099370,30cyclictest3379634-21IPC2
401657099370,1cyclictest0-21swapper/1021:54:412
4016566993735,2cyclictest3377361-21thunderbird19:49:2819
4016566993735,1cyclictest3379615-21URL08:26:5419
401656099379,27cyclictest851irq_work/723:55:3417
4016546993731,5cyclictest0-21swapper/319:19:1313
4016546993729,8cyclictest0-21swapper/300:35:4313
401654699370,31cyclictest0-21swapper/322:41:4113
401574923731,3sleep70-21swapper/719:06:2217
4016600993636,0cyclictest0-21swapper/1921:28:5011
4016600993635,1cyclictest0-21swapper/1919:54:3111
401660099360,35cyclictest3377361-21thunderbird23:17:1211
401660099360,35cyclictest0-21swapper/1923:52:4211
401660099360,35cyclictest0-21swapper/1923:28:5911
401660099360,35cyclictest0-21swapper/1923:28:5811
401660099360,35cyclictest0-21swapper/1921:09:4111
401660099360,35cyclictest0-21swapper/1920:29:4511
401660099360,1cyclictest3377361-21thunderbird00:08:0211
401660099360,1cyclictest0-21swapper/1922:38:4811
4016597993635,1cyclictest79343-40tracker-miner-f00:09:2510
4016597993633,2cyclictest3379752-21Isolated08:26:5410
401659799360,35cyclictest4132591-40tracker-miner-f21:24:2310
401659799360,35cyclictest3377361-21thunderbird22:58:2110
401659799360,35cyclictest0-21swapper/1823:28:2510
401659799360,35cyclictest0-21swapper/1823:28:2510
401659799360,35cyclictest0-21swapper/1821:10:2710
401659799360,1cyclictest3377361-21thunderbird19:48:5010
4016590993634,1cyclictest0-21swapper/1620:05:578
401658699360,35cyclictest4162320-21StreamT~s7
4016582993630,5cyclictest0-21swapper/1419:39:276
4016582993627,9cyclictest0-21swapper/1420:29:396
4016576993631,4cyclictest74919-40tracker-miner-f00:03:104
4016576993630,3cyclictest0-21swapper/1220:09:204
4016576993627,9cyclictest0-21swapper/1200:08:064
4016572993634,1cyclictest32602-40tracker-miner-f23:15:223
4016570993631,1cyclictest0-21swapper/1022:58:212
4016570993628,8cyclictest0-21swapper/1021:49:592
4016570993628,5cyclictest0-21swapper/1020:29:382
4016566993635,1cyclictest79272-40tracker-miner-f00:08:0119
4016566993635,0cyclictest0-21swapper/900:12:3519
401656699360,35cyclictest0-21swapper/919:53:3019
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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