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2025-12-19 - 22:15

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 Fri Dec 19, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811010,0rcu_preempt3-21ksoftirqd/011:45:070
811010,0rcu_preempt3-21ksoftirqd/011:32:100
81990,0rcu_preempt3-21ksoftirqd/012:35:510
81990,0rcu_preempt3-21ksoftirqd/012:27:270
81970,0rcu_preempt19-21ksoftirqd/107:40:011
81960,0rcu_preempt3-21ksoftirqd/011:21:170
81960,0rcu_preempt3-21ksoftirqd/010:38:390
81940,0rcu_preempt3-21ksoftirqd/010:11:560
81940,0rcu_preempt3-21ksoftirqd/009:19:130
81850,0rcu_preempt19-21ksoftirqd/108:35:181
81750,0rcu_preempt3-21ksoftirqd/010:19:510
81740,0rcu_preempt19-21ksoftirqd/109:12:211
81740,0rcu_preempt0-21swapper/009:14:550
81720,0rcu_preempt19-21ksoftirqd/112:07:391
81690,0rcu_preempt3-21ksoftirqd/011:25:220
81690,0rcu_preempt3-21ksoftirqd/011:18:230
81690,0rcu_preempt3-21ksoftirqd/009:45:040
81690,0rcu_preempt20713-21diskmemload12:14:121
81690,0rcu_preempt1372-21php-cgi09:54:130
81680,0rcu_preempt19-21ksoftirqd/109:44:021
1372599682,0cyclictest17002-21ping07:45:110
81670,0rcu_preempt19-21ksoftirqd/108:05:181
10050670,0irq/346-4848400181ktimersoftd/112:03:331
81660,0rcu_preempt757-21rngd12:33:130
81660,0rcu_preempt0-21swapper/111:57:491
1372599661,0cyclictest17002-21ping07:22:030
1372599661,0cyclictest0-21swapper/011:08:250
81650,0rcu_preempt19-21ksoftirqd/110:15:241
1372599653,0cyclictest0-21swapper/012:20:400
1372599653,0cyclictest0-21swapper/011:04:080
1372599652,0cyclictest0-21swapper/010:53:180
1372599652,0cyclictest0-21swapper/009:27:580
81640,0rcu_preempt20713-21diskmemload12:38:121
81640,0rcu_preempt20713-21diskmemload11:49:011
81640,0rcu_preempt13724-21cyclictest11:10:010
1372599646,0cyclictest23749-1kworker/0:0H11:51:530
1372599642,0cyclictest9418-1kworker/0:1H10:05:300
1372599642,0cyclictest17002-21ping07:35:180
1372599641,0cyclictest17002-21ping07:25:120
81630,0rcu_preempt3-21ksoftirqd/010:47:570
1372599632,0cyclictest0-21swapper/009:22:010
1372599631,0cyclictest17741-1kworker/0:3H10:55:390
81620,0rcu_preempt3-21ksoftirqd/008:10:180
81620,0rcu_preempt19-21ksoftirqd/110:06:331
1372599622,0cyclictest21582-21seq09:41:420
13725996211,0cyclictest0-21swapper/008:00:310
1372599621,0cyclictest17741-1kworker/0:3H10:44:030
1372599621,0cyclictest0-21swapper/010:00:490
81610,0rcu_preempt3-21ksoftirqd/011:35:180
81610,0rcu_preempt3-21ksoftirqd/011:35:180
81610,0rcu_preempt20713-21diskmemload11:15:431
81610,0rcu_preempt19-21ksoftirqd/110:59:051
81610,0rcu_preempt19-21ksoftirqd/110:39:571
81610,0rcu_preempt19-21ksoftirqd/109:16:231
81610,0rcu_preempt19-21ksoftirqd/107:10:011
1372599612,0cyclictest0-21swapper/012:14:030
1372599611,0cyclictest11449-21ssh11:40:050
81600,0rcu_preempt20713-21diskmemload12:29:391
81600,0rcu_preempt20713-21diskmemload10:42:451
81600,0rcu_preempt20713-21diskmemload09:22:451
81600,0rcu_preempt19-21ksoftirqd/109:25:581
81600,0rcu_preempt13416-21ps08:45:250
1372599605,0cyclictest11430-1kworker/0:1H12:15:280
1372599602,0cyclictest17002-21ping07:30:100
81590,0rcu_preempt20713-21diskmemload11:13:301
81590,0rcu_preempt20713-21diskmemload10:13:451
81590,0rcu_preempt19-21ksoftirqd/111:30:271
81590,0rcu_preempt19-21ksoftirqd/110:20:451
1372599592,0cyclictest3449-21tr08:15:250
1372599592,0cyclictest0-21swapper/012:00:020
1372599592,0cyclictest0-21swapper/009:56:060
1372599592,0cyclictest0-21swapper/007:40:190
13725995911,0cyclictest7725-21apt-get08:30:110
1372599591,0cyclictest7615-1kworker/0:2H10:34:320
1372599591,0cyclictest0-21swapper/011:56:030
81580,0rcu_preempt3-21ksoftirqd/009:30:090
81580,0rcu_preempt20713-21diskmemload11:54:491
81580,0rcu_preempt19-21ksoftirqd/110:25:181
81580,0rcu_preempt19-21ksoftirqd/109:45:271
81580,0rcu_preempt19-21ksoftirqd/109:33:251
81580,0rcu_preempt0-21swapper/111:42:311
1372599583,0cyclictest0-21swapper/012:08:440
1372599582,0cyclictest9565-21runrttasks08:35:160
1372599582,0cyclictest0-21swapper/008:20:270
81570,0rcu_preempt28846-21diskstats07:55:160
81570,0rcu_preempt28846-21diskstats07:55:160
81570,0rcu_preempt20713-21diskmemload09:36:191
81570,0rcu_preempt19-21ksoftirqd/112:32:041
81570,0rcu_preempt19-21ksoftirqd/111:09:391
81570,0rcu_preempt19-21ksoftirqd/108:15:181
1372599579,0cyclictest14277-21ssh09:35:130
81560,0rcu_preempt19-21ksoftirqd/110:54:461
81560,0rcu_preempt19-21ksoftirqd/110:45:201
81560,0rcu_preempt19-21ksoftirqd/107:41:331
1372599562,0cyclictest15512-1kworker/0:2H09:00:130
1372599561,0cyclictest0-21swapper/010:20:110
81550,0rcu_preempt3-21ksoftirqd/010:27:280
81550,0rcu_preempt29890-21ping08:00:521
81550,0rcu_preempt19-21ksoftirqd/112:15:571
81550,0rcu_preempt19-21ksoftirqd/109:54:461
1372599553,0cyclictest0-21swapper/008:05:110
1372599552,0cyclictest0-21swapper/008:55:270
81540,0rcu_preempt19-21ksoftirqd/111:28:421
81540,0rcu_preempt19-21ksoftirqd/110:32:441
81540,0rcu_preempt19-21ksoftirqd/109:59:011
81530,0rcu_preempt3-21ksoftirqd/007:15:010
81530,0rcu_preempt19-21ksoftirqd/112:20:591
81530,0rcu_preempt18082-21irqstats09:00:211
81530,0rcu_preempt14295-21apt-get08:50:120
1372599532,0cyclictest11215-21dropbear08:40:160
1372599532,0cyclictest0-21swapper/008:27:470
1372599531,0cyclictest19257-21aten_rapower_cu09:05:130
10050530,0irq/346-48484003631-1kworker/1:2H11:35:391
10050530,0irq/346-48484003631-1kworker/1:2H11:35:391
81520,0rcu_preempt19-21ksoftirqd/110:02:481
81520,0rcu_preempt15505-21apt-get07:15:120
13725995110,0cyclictest26564-1kworker/0:4H07:50:140
81500,0rcu_preempt19-21ksoftirqd/111:00:391
10050500,0irq/346-484840025929-1kworker/1:3H11:22:431
1372599487,0cyclictest13713-21munin-run07:10:010
81470,0rcu_preempt19-21ksoftirqd/107:20:331
81460,0rcu_preempt19-21ksoftirqd/109:06:491
81460,0rcu_preempt19-21ksoftirqd/108:10:221
81460,0rcu_preempt0-21swapper/107:50:111
10050450,0irq/346-48484008478-1kworker/1:1H07:20:011
81440,0rcu_preempt19-21ksoftirqd/108:42:221
10050440,0irq/346-48484000-21swapper/107:50:011
81430,0rcu_preempt19-21ksoftirqd/107:55:211
81430,0rcu_preempt19-21ksoftirqd/107:55:211
81410,0rcu_preempt19-21ksoftirqd/108:45:191
81410,0rcu_preempt19-21ksoftirqd/108:30:441
81410,0rcu_preempt19-21ksoftirqd/108:22:311
81410,0rcu_preempt19-21ksoftirqd/107:30:201
81400,0rcu_preempt19-21ksoftirqd/108:54:581
81400,0rcu_preempt19-21ksoftirqd/107:05:261
81390,0rcu_preempt19-21ksoftirqd/108:56:191
81390,0rcu_preempt19-21ksoftirqd/108:29:481
81360,0rcu_preempt19-21ksoftirqd/107:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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