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2026-06-28 - 20:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #5

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackaslot5s.osadl.org (updated Sun Jun 28, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811430,0rcu_preempt19-21ksoftirqd/110:22:421
811130,0rcu_preempt19-21ksoftirqd/109:37:451
811080,0rcu_preempt19-21ksoftirqd/110:33:111
81850,0rcu_preempt19-21ksoftirqd/110:12:291
81760,0rcu_preempt0-21swapper/108:32:501
2214999762,0cyclictest0-21swapper/010:07:310
81740,0rcu_preempt1190-1kworker/1:1H09:44:581
81720,0rcu_preempt19-21ksoftirqd/112:07:421
81700,0rcu_preempt19-21ksoftirqd/111:16:281
10250680,0irq/333-mmc015364-21ssh11:37:350
2214999672,0cyclictest5041-21seq11:59:460
81650,0rcu_preempt3-21ksoftirqd/011:42:470
2214999652,0cyclictest0-21swapper/012:34:220
2214999651,0cyclictest14790-1kworker/0:2H12:13:010
81640,0rcu_preempt19-21ksoftirqd/111:00:041
2214999644,0cyclictest28843-1kworker/0:1H09:08:440
2214999641,0cyclictest13813-21fschecks_time09:57:350
81630,0rcu_preempt54-21kswapd010:16:410
81630,0rcu_preempt19-21ksoftirqd/109:24:381
22149996316,0cyclictest5351-21ssh09:15:440
2214999631,0cyclictest20433-21apt-get10:37:290
2214999631,0cyclictest20433-21apt-get10:37:290
81620,0rcu_preempt19-21ksoftirqd/111:07:441
2214999622,0cyclictest14408-21ssh12:09:060
2214999621,0cyclictest8497-21taskset10:24:560
2214999621,0cyclictest31951-21ssh11:21:470
81610,0rcu_preempt5388-1kworker/1:3H10:57:181
81610,0rcu_preempt29146-21diskmemload11:26:081
81610,0rcu_preempt19-21ksoftirqd/110:27:411
2214999613,0cyclictest508-1kworker/0:0H12:31:520
2214999612,0cyclictest22772-21aten_rapower_en11:12:290
2214999612,0cyclictest0-21swapper/009:52:370
2214999611,0cyclictest15853-1kworker/0:3H10:03:410
10050610,0irq/346-484840029858-21aten_rapower_en11:52:291
81600,0rcu_preempt3-21ksoftirqd/010:36:260
2214999602,0cyclictest6677-21ssh11:28:080
2214999602,0cyclictest0-21swapper/009:44:440
22149996014,0cyclictest30734-21munin-node0
2214999601,0cyclictest3728-21apt-get09:47:290
2214999601,0cyclictest21360-21idleruntime08:42:360
81590,0rcu_preempt28869-21apt-get07:27:311
81590,0rcu_preempt19-21ksoftirqd/111:47:391
81590,0rcu_preempt19-21ksoftirqd/111:47:391
2214999592,0cyclictest26995-21munin-node0
2214999592,0cyclictest22231-21munin-node0
2214999592,0cyclictest0-21swapper/009:07:180
2214999592,0cyclictest0-21swapper/009:07:180
2214999591,0cyclictest4660-21taskset07:52:290
2214999591,0cyclictest2973-21munin-node0
81580,0rcu_preempt3-21ksoftirqd/010:57:370
81580,0rcu_preempt16923-21php-cgi09:27:331
2214999582,0cyclictest893-21ssh10:50:030
2214999582,0cyclictest7733-21if_eth112:02:380
2214999582,0cyclictest22277-21diskstats12:17:320
2214999582,0cyclictest19442-21munin-node0
2214999582,0cyclictest0-21swapper/011:48:430
2214999582,0cyclictest0-21swapper/011:48:430
2214999582,0cyclictest0-21swapper/011:32:270
22149995816,0cyclictest0-21swapper/008:12:280
2214999581,0cyclictest6579-21rm07:57:360
2214999581,0cyclictest32614-21apt-get11:22:290
2214999581,0cyclictest29146-21diskmemload09:17:280
10050580,0irq/346-48484001067-21lighttpd11:29:201
81570,0rcu_preempt19-21ksoftirqd/108:22:471
81570,0rcu_preempt19-21ksoftirqd/107:47:181
2214999572,0cyclictest19278-21munin-run08:37:180
2214999571,0cyclictest859-21aten_rapower_vo10:17:310
2214999571,0cyclictest26414-21apt-get09:37:300
2214999571,0cyclictest25138-1kworker/0:1H11:02:450
2214999571,0cyclictest17347-21ssh09:27:390
81560,0rcu_preempt29146-21diskmemload11:42:351
81560,0rcu_preempt19-21ksoftirqd/112:12:321
81560,0rcu_preempt19-21ksoftirqd/111:02:281
81560,0rcu_preempt14044-1kworker/1:0H08:22:191
2214999563,0cyclictest0-21swapper/011:07:430
2214999562,0cyclictest25431-21ping07:17:320
2214999562,0cyclictest14841-21ssh10:31:480
2214999562,0cyclictest147122sleep008:22:340
2214999562,0cyclictest12213-21ssh09:22:380
2214999562,0cyclictest0-21swapper/010:42:350
81550,0rcu_preempt23616-21runrttasks10:07:351
2214999553,0cyclictest0-21swapper/008:07:440
2214999552,0cyclictest26263-21cut08:57:350
2214999552,0cyclictest24203-21idleruntime07:12:350
2214999552,0cyclictest24203-21idleruntime07:12:350
2214999551,0cyclictest24213-21awk08:52:170
10050550,0irq/346-484840054-21kswapd009:54:151
2214999543,0cyclictest0-21swapper/007:10:420
2214999542,0cyclictest8144-21dropbear08:02:330
2214999542,0cyclictest25431-21ping07:32:300
2214999542,0cyclictest0-21swapper/008:52:340
2214999542,0cyclictest0-21swapper/008:27:370
2214999542,0cyclictest0-21swapper/008:27:370
81530,0rcu_preempt19-21ksoftirqd/108:57:441
2214999532,0cyclictest13863-21grep08:17:480
2214999522,0cyclictest0-21swapper/007:47:430
10050520,0irq/346-484840017924-1kworker/1:1H10:39:321
10050520,0irq/346-484840017924-1kworker/1:1H10:39:321
81510,0rcu_preempt19-21ksoftirqd/109:07:421
2214999512,0cyclictest32352-21dropbear07:37:360
2214999512,0cyclictest25431-21ping07:27:310
81500,0rcu_preempt19-21ksoftirqd/112:34:361
10050500,0irq/346-484840054-21kswapd009:57:441
9950490,0irq/345-48484009066-1kworker/1:0H09:20:441
81490,0rcu_preempt4420-21meminfo09:47:391
81490,0rcu_preempt19-21ksoftirqd/110:47:351
2214999492,0cyclictest25431-21ping07:42:290
2214999491,0cyclictest25431-21ping07:22:360
9950480,0irq/345-48484000-21swapper/112:31:281
81480,0rcu_preempt19-21ksoftirqd/112:17:331
81470,0rcu_preempt0-21swapper/107:47:291
81460,0rcu_preempt3-21ksoftirqd/007:02:420
81460,0rcu_preempt19-21ksoftirqd/109:32:351
81460,0rcu_preempt19-21ksoftirqd/108:02:351
81460,0rcu_preempt0-21swapper/110:42:421
10050460,0irq/346-484840019-21ksoftirqd/111:57:201
9950450,0irq/345-48484000-21swapper/111:32:221
81450,0rcu_preempt0-21swapper/112:22:481
81440,0rcu_preempt18432-21aten_rapower_cu10:02:301
81430,0rcu_preempt19-21ksoftirqd/110:19:071
81430,0rcu_preempt19-21ksoftirqd/107:57:451
81430,0rcu_preempt19-21ksoftirqd/107:22:531
81430,0rcu_preempt19-21ksoftirqd/107:17:331
81420,0rcu_preempt19-21ksoftirqd/111:19:591
81420,0rcu_preempt19-21ksoftirqd/109:14:031
81420,0rcu_preempt19-21ksoftirqd/108:12:451
81420,0rcu_preempt19-21ksoftirqd/108:07:361
81420,0rcu_preempt19-21ksoftirqd/107:37:401
81410,0rcu_preempt25142-21gzip08:52:451
81410,0rcu_preempt19-21ksoftirqd/111:39:371
81410,0rcu_preempt19-21ksoftirqd/107:32:381
10050410,0irq/346-48484009833-1kworker/1:1H12:06:351
81400,0rcu_preempt19-21ksoftirqd/109:02:291
81400,0rcu_preempt19-21ksoftirqd/109:02:291
81400,0rcu_preempt19-21ksoftirqd/108:37:371
81400,0rcu_preempt19-21ksoftirqd/107:07:411
81390,0rcu_preempt23198-21if_eth308:47:361
81390,0rcu_preempt19-21ksoftirqd/107:57:171
81390,0rcu_preempt19-21ksoftirqd/107:12:301
81390,0rcu_preempt19-21ksoftirqd/107:12:301
81380,0rcu_preempt19-21ksoftirqd/108:42:301
81370,0rcu_preempt19-21ksoftirqd/107:05:001
81370,0rcu_preempt16157-21apt-get08:27:301
81370,0rcu_preempt16157-21apt-get08:27:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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