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2026-06-14 - 14:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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  Eltec
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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 highest latencies:
System rack3slot5s.osadl.org (updated Sun Jun 14, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1229121370sleep0121650irq/29-eth0_g0_11:12:380
275922520sleep1121650irq/29-eth0_g0_10:03:221
121500ksoftirqd/1121750irq/30-eth0_g0_12:04:561
121480ksoftirqd/1121650irq/29-eth0_g0_09:25:461
121650470irq/29-eth0_g0_31ksoftirqd/012:34:240
121650460irq/29-eth0_g0_31ksoftirqd/011:19:190
121650450irq/29-eth0_g0_31ksoftirqd/009:44:260
121650450irq/29-eth0_g0_31ksoftirqd/009:44:260
121650450irq/29-eth0_g0_121ksoftirqd/112:04:220
121450ksoftirqd/1121750irq/30-eth0_g0_12:38:261
121450ksoftirqd/1121650irq/29-eth0_g0_10:47:191
121650440irq/29-eth0_g0_26946-21open_files09:59:260
12452430sleep1121650irq/29-eth0_g0_10:27:491
121650430irq/29-eth0_g0_1964-21runrttasks07:05:300
121430ksoftirqd/1121650irq/29-eth0_g0_11:34:081
121750420irq/30-eth0_g0_13-21kworker/0:110:23:390
121750420irq/30-eth0_g0_1219-21kworker/1:211:20:521
121650420irq/29-eth0_g0_31ksoftirqd/010:59:180
121650420irq/29-eth0_g0_31ksoftirqd/009:20:510
121650420irq/29-eth0_g0_24227-21unixbench_multi11:59:300
121650420irq/29-eth0_g0_13-21kworker/0:112:27:470
121650420irq/29-eth0_g0_13-21kworker/0:111:45:340
121650420irq/29-eth0_g0_13-21kworker/0:111:04:370
121650410irq/29-eth0_g0_31ksoftirqd/011:49:190
121650410irq/29-eth0_g0_31ksoftirqd/010:28:550
121650410irq/29-eth0_g0_31ksoftirqd/009:56:510
121650410irq/29-eth0_g0_31ksoftirqd/009:35:090
121650410irq/29-eth0_g0_21825-21if_eth009:39:200
121650410irq/29-eth0_g0_20180-21sendmail_mailqu07:19:280
121650410irq/29-eth0_g0_13-21kworker/0:112:21:330
121650410irq/29-eth0_g0_13-21kworker/0:111:43:280
121650410irq/29-eth0_g0_13-21kworker/0:109:17:020
121650410irq/29-eth0_g0_121ksoftirqd/110:54:270
121650410irq/29-eth0_g0_121ksoftirqd/110:16:280
121750400irq/30-eth0_g0_1219-21kworker/1:211:39:371
121750400irq/30-eth0_g0_121ksoftirqd/112:03:111
121650400irq/29-eth0_g0_31ksoftirqd/012:29:210
121650400irq/29-eth0_g0_17891-21seq11:34:260
121650400irq/29-eth0_g0_17891-21seq11:34:260
121650400irq/29-eth0_g0_13-21kworker/0:111:55:290
121650400irq/29-eth0_g0_13-21kworker/0:111:26:440
121650400irq/29-eth0_g0_13-21kworker/0:110:41:500
121650400irq/29-eth0_g0_13-21kworker/0:110:41:500
121650400irq/29-eth0_g0_13-21kworker/0:110:37:020
121650400irq/29-eth0_g0_13-21kworker/0:109:25:370
799390migration/021554-21unixbench_singl07:24:290
121650390irq/29-eth0_g0_31ksoftirqd/010:49:190
121650390irq/29-eth0_g0_26912sleep110:34:131
121650390irq/29-eth0_g0_1964-21runrttasks07:42:110
121650390irq/29-eth0_g0_13-21kworker/0:112:13:160
121650390irq/29-eth0_g0_13-21kworker/0:111:33:020
121650390irq/29-eth0_g0_13-21kworker/0:110:48:080
121650390irq/29-eth0_g0_13-21kworker/0:110:32:560
121650390irq/29-eth0_g0_13-21kworker/0:109:30:080
121650390irq/29-eth0_g0_121ksoftirqd/112:14:250
121650390irq/29-eth0_g0_121ksoftirqd/110:09:160
121650390irq/29-eth0_g0_121ksoftirqd/109:09:220
121390ksoftirqd/1121650irq/29-eth0_g0_10:44:071
121390ksoftirqd/1121650irq/29-eth0_g0_10:44:071
121390ksoftirqd/1121650irq/29-eth0_g0_09:29:271
121750380irq/30-eth0_g0_1219-21kworker/1:212:09:491
121750380irq/30-eth0_g0_1219-21kworker/1:211:09:271
121750380irq/30-eth0_g0_1219-21kworker/1:210:09:241
121750380irq/30-eth0_g0_1219-21kworker/1:209:55:241
121750380irq/30-eth0_g0_121ksoftirqd/110:54:491
121750380irq/30-eth0_g0_0-21swapper/111:07:391
121650380irq/29-eth0_g0_317422sleep112:30:241
121650380irq/29-eth0_g0_13-21kworker/0:109:53:270
294232370sleep1121650irq/29-eth0_g0_12:21:581
121750370irq/30-eth0_g0_12515-21/usr/sbin/munin11:14:201
121750370irq/30-eth0_g0_1219-21kworker/1:211:38:131
121750370irq/30-eth0_g0_1219-21kworker/1:211:38:131
121750370irq/30-eth0_g0_1219-21kworker/1:211:01:391
121750370irq/30-eth0_g0_1219-21kworker/1:210:31:461
121750370irq/30-eth0_g0_1219-21kworker/1:210:21:391
121750370irq/30-eth0_g0_1219-21kworker/1:209:09:211
121650370irq/29-eth0_g0_1964-21runrttasks08:44:200
121650370irq/29-eth0_g0_1964-21runrttasks08:34:160
121650370irq/29-eth0_g0_1964-21runrttasks08:01:050
121650370irq/29-eth0_g0_1964-21runrttasks07:47:270
121650370irq/29-eth0_g0_1964-21runrttasks07:31:420
121650370irq/29-eth0_g0_13-21kworker/0:111:15:030
121650370irq/29-eth0_g0_13-21kworker/0:110:08:130
121750360irq/30-eth0_g0_27876-21chrt07:50:561
121750360irq/30-eth0_g0_1219-21kworker/1:212:28:101
121750360irq/30-eth0_g0_1219-21kworker/1:211:54:261
121750360irq/30-eth0_g0_121ksoftirqd/111:28:161
121750360irq/30-eth0_g0_0-21swapper/109:38:541
121650360irq/29-eth0_g0_9731-21ntp_offset08:49:250
121650360irq/29-eth0_g0_1964-21runrttasks08:27:210
121650360irq/29-eth0_g0_1964-21runrttasks08:27:210
121650360irq/29-eth0_g0_1964-21runrttasks07:57:100
121650360irq/29-eth0_g0_1964-21runrttasks07:12:230
121650360irq/29-eth0_g0_1964-21runrttasks07:12:230
121650360irq/29-eth0_g0_16744-21runrttasks07:05:071
121360ksoftirqd/1121650irq/29-eth0_g0_09:49:291
121750350irq/30-eth0_g0_7313-21taskset08:39:251
121750350irq/30-eth0_g0_1516-21runrttasks08:15:121
121750350irq/30-eth0_g0_1516-21runrttasks08:15:121
121750350irq/30-eth0_g0_1219-21kworker/1:209:40:221
121750350irq/30-eth0_g0_1219-21kworker/1:209:19:241
121750350irq/30-eth0_g0_0-21swapper/111:50:141
121750350irq/30-eth0_g0_0-21swapper/110:07:521
121650350irq/29-eth0_g0_1964-21runrttasks08:40:150
121650350irq/29-eth0_g0_1964-21runrttasks08:15:270
121650350irq/29-eth0_g0_1964-21runrttasks08:15:270
121650350irq/29-eth0_g0_1964-21runrttasks07:49:320
1710299344cyclictest22841-21/usr/sbin/munin09:44:181
1710299344cyclictest22841-21/usr/sbin/munin09:44:181
1710299341cyclictest22042-21latency_hist07:29:081
121750340irq/30-eth0_g0_26626-21taskset07:45:401
121750340irq/30-eth0_g0_1219-21kworker/1:212:18:291
121750340irq/30-eth0_g0_1219-21kworker/1:210:50:381
121750340irq/30-eth0_g0_1219-21kworker/1:209:14:351
121650340irq/29-eth0_g0_2201-21/usr/sbin/munin08:19:210
121650340irq/29-eth0_g0_2201-21/usr/sbin/munin08:19:210
121650340irq/29-eth0_g0_1964-21runrttasks08:55:110
121650340irq/29-eth0_g0_1964-21runrttasks08:29:390
121650340irq/29-eth0_g0_13678-21unixbench_multi09:04:290
121650340irq/29-eth0_g0_12479-21unixbench_singl08:59:280
121650340irq/29-eth0_g0_0-21swapper/007:34:190
121340ksoftirqd/110281-21taskset08:51:581
121750330irq/30-eth0_g0_30501-21runrttasks10:14:231
121750330irq/30-eth0_g0_13385-21netstat09:04:231
121650330irq/29-eth0_g0_20836-21runrttasks11:47:021
121650330irq/29-eth0_g0_1964-21runrttasks08:13:230
121650330irq/29-eth0_g0_1964-21runrttasks08:13:230
121650330irq/29-eth0_g0_1964-21runrttasks08:05:140
121330ksoftirqd/13160-21cat08:24:081
121330ksoftirqd/13160-21cat08:24:081
121750320irq/30-eth0_g0_23930-21timerandwakeup07:34:281
121750320irq/30-eth0_g0_2060-21sendmail08:08:311
121750320irq/30-eth0_g0_0-21swapper/108:37:441
121650320irq/29-eth0_g0_1964-21runrttasks07:14:350
121320ksoftirqd/1401-21taskset08:11:531
121320ksoftirqd/1401-21taskset08:11:531
17102993125cyclictest22229-21df_abs07:29:201
1710299312cyclictest5196-21runrttasks08:29:571
121750310irq/30-eth0_g0_0-21swapper/108:54:421
121650310irq/29-eth0_g0_20329-21unixbench_singl07:19:301
121650310irq/29-eth0_g0_17826-21sed07:09:271
121650310irq/29-eth0_g0_17826-21sed07:09:271
121650310irq/29-eth0_g0_12557-21runrttasks08:59:521
121650300irq/29-eth0_g0_28373-21df_abs07:54:201
121650300irq/29-eth0_g0_19059-21unixbench_multi07:14:291
121300ksoftirqd/1121650irq/29-eth0_g0_08:44:241
121650290irq/29-eth0_g0_4181-21runrttasks08:27:261
121650290irq/29-eth0_g0_4181-21runrttasks08:27:261
121650290irq/29-eth0_g0_30582-21runrttasks08:03:501
121650280irq/29-eth0_g0_25408-21runrttasks07:40:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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