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2025-04-11 - 22:48

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 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 792 highest latencies:
System rackaslot5s.osadl.org (updated Fri Apr 11, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811220,0rcu_preempt3-21ksoftirqd/010:18:310
811210,0rcu_preempt19-21ksoftirqd/109:48:161
811120,0rcu_preempt3-21ksoftirqd/010:35:090
811110,0rcu_preempt25613-21kworker/0:207:18:370
811110,0rcu_preempt25613-21kworker/0:207:18:370
811060,0rcu_preempt19-21ksoftirqd/111:28:331
811020,0rcu_preempt54-21kswapd010:48:081
811010,0rcu_preempt3-21ksoftirqd/011:38:360
81990,0rcu_preempt19-21ksoftirqd/112:33:261
81930,0rcu_preempt3-21ksoftirqd/009:33:260
81880,0rcu_preempt3-21ksoftirqd/009:18:240
81880,0rcu_preempt3-21ksoftirqd/008:43:290
81870,0rcu_preempt3-21ksoftirqd/009:08:390
81860,0rcu_preempt3-21ksoftirqd/011:53:290
81860,0rcu_preempt3-21ksoftirqd/007:58:350
81860,0rcu_preempt3-21ksoftirqd/007:24:170
81810,0rcu_preempt3-21ksoftirqd/011:18:330
81810,0rcu_preempt3-21ksoftirqd/010:54:530
81800,0rcu_preempt3-21ksoftirqd/010:13:350
81800,0rcu_preempt3-21ksoftirqd/009:48:170
81800,0rcu_preempt3-21ksoftirqd/008:48:350
81800,0rcu_preempt19-21ksoftirqd/112:08:161
81790,0rcu_preempt3-21ksoftirqd/009:58:270
81790,0rcu_preempt3-21ksoftirqd/007:53:270
81790,0rcu_preempt19-21ksoftirqd/111:38:301
81780,0rcu_preempt3-21ksoftirqd/011:47:140
81780,0rcu_preempt3-21ksoftirqd/008:38:330
81780,0rcu_preempt3-21ksoftirqd/007:28:230
81780,0rcu_preempt19-21ksoftirqd/111:23:081
81770,0rcu_preempt19-21ksoftirqd/111:08:261
81760,0rcu_preempt25613-21kworker/0:207:38:080
81760,0rcu_preempt24385-1kworker/1:2H11:56:471
81750,0rcu_preempt3-21ksoftirqd/008:28:330
81750,0rcu_preempt3-21ksoftirqd/007:13:250
81740,0rcu_preempt7897-21latency09:58:301
81740,0rcu_preempt3-21ksoftirqd/011:28:240
81740,0rcu_preempt3-21ksoftirqd/010:48:200
81730,0rcu_preempt6693-21grep07:33:440
81730,0rcu_preempt3-21ksoftirqd/009:38:370
81710,0rcu_preempt3-21ksoftirqd/009:13:290
81710,0rcu_preempt3-21ksoftirqd/007:08:240
81700,0rcu_preempt3-21ksoftirqd/012:18:300
81700,0rcu_preempt3-21ksoftirqd/011:33:200
81700,0rcu_preempt3-21ksoftirqd/011:08:070
81700,0rcu_preempt3-21ksoftirqd/010:38:280
81690,0rcu_preempt3-21ksoftirqd/009:31:410
81690,0rcu_preempt3-21ksoftirqd/008:58:310
81690,0rcu_preempt19-21ksoftirqd/111:13:271
81680,0rcu_preempt3-21ksoftirqd/009:44:440
81680,0rcu_preempt19-21ksoftirqd/110:41:391
81670,0rcu_preempt19-21ksoftirqd/110:18:281
81660,0rcu_preempt3-21ksoftirqd/011:08:290
81660,0rcu_preempt3-21ksoftirqd/008:03:240
81660,0rcu_preempt16805-21kworker/0:211:15:130
81650,0rcu_preempt3-21ksoftirqd/012:36:050
81650,0rcu_preempt3-21ksoftirqd/010:58:370
81650,0rcu_preempt3-21ksoftirqd/008:23:220
81650,0rcu_preempt19-21ksoftirqd/109:38:371
81640,0rcu_preempt3-21ksoftirqd/012:25:050
81640,0rcu_preempt3-21ksoftirqd/011:59:110
81620,0rcu_preempt3-21ksoftirqd/008:33:070
81620,0rcu_preempt3-21ksoftirqd/008:18:360
81620,0rcu_preempt19-21ksoftirqd/111:58:351
81620,0rcu_preempt19-21ksoftirqd/111:48:151
81610,0rcu_preempt3-21ksoftirqd/012:28:170
81610,0rcu_preempt3-21ksoftirqd/010:43:540
81600,0rcu_preempt9159-21df_inode07:43:251
81600,0rcu_preempt3-21ksoftirqd/012:17:550
81600,0rcu_preempt3-21ksoftirqd/010:09:330
81600,0rcu_preempt3-21ksoftirqd/009:53:340
81600,0rcu_preempt19-21ksoftirqd/110:47:171
81600,0rcu_preempt19-21ksoftirqd/109:33:421
81590,0rcu_preempt3-21ksoftirqd/012:08:180
81590,0rcu_preempt3-21ksoftirqd/012:05:450
81590,0rcu_preempt3-21ksoftirqd/011:51:310
81590,0rcu_preempt19-21ksoftirqd/110:33:261
81580,0rcu_preempt3-21ksoftirqd/007:48:360
81580,0rcu_preempt3-21ksoftirqd/007:43:080
81570,0rcu_preempt3-21ksoftirqd/011:24:100
81570,0rcu_preempt3-21ksoftirqd/010:28:560
81570,0rcu_preempt3-21ksoftirqd/009:25:250
81570,0rcu_preempt3-21ksoftirqd/009:03:320
81570,0rcu_preempt19-21ksoftirqd/112:18:281
81570,0rcu_preempt0-21swapper/010:26:420
81570,0rcu_preempt0-21swapper/008:13:330
81560,0rcu_preempt3-21ksoftirqd/010:04:030
81530,0rcu_preempt3520-21apt-get09:53:161
81530,0rcu_preempt19-21ksoftirqd/111:18:191
9950520,0irq/345-484840019-21ksoftirqd/107:38:441
81520,0rcu_preempt19-21ksoftirqd/109:25:501
81520,0rcu_preempt19-21ksoftirqd/107:48:301
81510,0rcu_preempt19-21ksoftirqd/109:28:191
81500,0rcu_preempt19-21ksoftirqd/112:28:231
81500,0rcu_preempt19-21ksoftirqd/111:45:281
81500,0rcu_preempt12148-21ssh09:18:301
81490,0rcu_preempt3-21ksoftirqd/008:08:320
81490,0rcu_preempt19-21ksoftirqd/110:27:271
10050490,0irq/346-484840028838-21munin-node0
81480,0rcu_preempt19-21ksoftirqd/108:03:081
81470,0rcu_preempt19-21ksoftirqd/110:54:011
81470,0rcu_preempt19-21ksoftirqd/108:33:281
81470,0rcu_preempt19-21ksoftirqd/108:21:141
81470,0rcu_preempt19-21ksoftirqd/108:03:071
81460,0rcu_preempt5840-21kworker/u4:110:13:341
81460,0rcu_preempt19-21ksoftirqd/112:13:211
81460,0rcu_preempt19-21ksoftirqd/112:07:151
81460,0rcu_preempt19-21ksoftirqd/111:33:241
81460,0rcu_preempt19-21ksoftirqd/109:16:191
81460,0rcu_preempt19-21ksoftirqd/107:08:281
81450,0rcu_preempt3-21ksoftirqd/008:53:330
81450,0rcu_preempt19-21ksoftirqd/110:28:201
81450,0rcu_preempt19-21ksoftirqd/108:23:281
81450,0rcu_preempt19-21ksoftirqd/107:13:311
81440,0rcu_preempt32520-21ntp_states08:53:321
81440,0rcu_preempt1077-21apt-get08:58:151
10050440,0irq/346-484840018267-21ssh10:59:561
81430,0rcu_preempt29762-21cyclictest08:33:071
81430,0rcu_preempt19-21ksoftirqd/110:08:411
81430,0rcu_preempt19-21ksoftirqd/109:11:121
81410,0rcu_preempt19-21ksoftirqd/107:08:071
81400,0rcu_preempt19-21ksoftirqd/110:06:551
81400,0rcu_preempt19-21ksoftirqd/108:13:381
81390,0rcu_preempt19-21ksoftirqd/111:07:481
81390,0rcu_preempt19-21ksoftirqd/108:48:281
81390,0rcu_preempt19-21ksoftirqd/107:33:431
81380,0rcu_preempt19-21ksoftirqd/112:25:551
81380,0rcu_preempt19-21ksoftirqd/108:47:451
81370,0rcu_preempt7648-21kworker/1:208:08:261
81370,0rcu_preempt19-21ksoftirqd/109:46:471
81370,0rcu_preempt19-21ksoftirqd/109:03:171
81370,0rcu_preempt19-21ksoftirqd/107:23:181
81360,0rcu_preempt19-21ksoftirqd/108:38:321
81360,0rcu_preempt19-21ksoftirqd/107:18:231
81360,0rcu_preempt19-21ksoftirqd/107:18:231
1699340,0migration/112789-21munin-node1
81320,0rcu_preempt19-21ksoftirqd/107:31:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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