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2026-06-12 - 22:33

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 Fri Jun 12, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
703821530sleep1121650irq/29-eth0_g0_09:13:161
89172900chrt121750irq/30-eth0_g0_07:09:121
89172900chrt121750irq/30-eth0_g0_07:09:121
121870ksoftirqd/1121650irq/29-eth0_g0_10:49:230
72312810sleep0121650irq/29-eth0_g0_09:14:240
121770ksoftirqd/1121650irq/29-eth0_g0_11:19:321
150682660sleep0121650irq/29-eth0_g0_11:58:250
247092640sleep1121650irq/29-eth0_g0_12:36:331
247092640sleep1121650irq/29-eth0_g0_12:36:331
121580ksoftirqd/1121750irq/30-eth0_g0_10:33:401
121560ksoftirqd/1121750irq/30-eth0_g0_10:15:431
121550ksoftirqd/1121750irq/30-eth0_g0_09:23:481
121540ksoftirqd/1121750irq/30-eth0_g0_10:51:211
197132520sleep1121750irq/30-eth0_g0_12:15:251
121490ksoftirqd/1121750irq/30-eth0_g0_10:39:571
121490ksoftirqd/1121650irq/29-eth0_g0_09:04:340
121450ksoftirqd/1121750irq/30-eth0_g0_10:44:290
121650430irq/29-eth0_g0_1964-21runrttasks10:38:100
121650430irq/29-eth0_g0_1964-21runrttasks10:38:100
121430ksoftirqd/1121750irq/30-eth0_g0_11:41:001
121430ksoftirqd/1121650irq/29-eth0_g0_09:16:561
115682430sleep0121750irq/30-eth0_g0_09:29:340
121750420irq/30-eth0_g0_1219-21kworker/1:212:12:491
121750420irq/30-eth0_g0_1219-21kworker/1:209:59:571
121650420irq/29-eth0_g0_17926-21latency12:09:250
121650420irq/29-eth0_g0_14052-21grep09:39:340
121650420irq/29-eth0_g0_13-21kworker/0:111:31:590
121750410irq/30-eth0_g0_1219-21kworker/1:210:24:261
121750410irq/30-eth0_g0_1219-21kworker/1:209:43:501
121650410irq/29-eth0_g0_8322-21sendmail_mailqu07:04:330
121650410irq/29-eth0_g0_8322-21sendmail_mailqu07:04:330
121650410irq/29-eth0_g0_31ksoftirqd/010:08:360
121650410irq/29-eth0_g0_15207-21df07:34:250
121650410irq/29-eth0_g0_15207-21df07:34:250
121650410irq/29-eth0_g0_13-21kworker/0:110:32:100
121650410irq/29-eth0_g0_0-21swapper/008:54:220
121410ksoftirqd/1121650irq/29-eth0_g0_12:03:031
121410ksoftirqd/1121650irq/29-eth0_g0_10:37:221
121410ksoftirqd/1121650irq/29-eth0_g0_10:37:221
121410ksoftirqd/1121650irq/29-eth0_g0_10:21:021
892999401cyclictest325772sleep108:44:281
121750400irq/30-eth0_g0_1219-21kworker/1:211:12:021
121650400irq/29-eth0_g0_9563-21proc_pri11:34:300
121650400irq/29-eth0_g0_31ksoftirqd/011:48:270
121650400irq/29-eth0_g0_13-21kworker/0:112:03:480
121650400irq/29-eth0_g0_13-21kworker/0:111:19:580
121650400irq/29-eth0_g0_13-21kworker/0:111:03:390
121650400irq/29-eth0_g0_13-21kworker/0:110:15:590
121650400irq/29-eth0_g0_121ksoftirqd/112:18:470
121650400irq/29-eth0_g0_121ksoftirqd/109:10:580
121400ksoftirqd/1121750irq/30-eth0_g0_09:49:540
892999398cyclictest12468-21netstat09:34:271
892999392cyclictest1356-21latency08:49:271
892999391cyclictest5898-21diskmemload12:29:211
892999391cyclictest5898-21diskmemload12:29:211
892999391cyclictest27353-21cat08:24:131
121750390irq/30-eth0_g0_17316-21taskset09:54:271
121750390irq/30-eth0_g0_1219-21kworker/1:212:21:331
121750390irq/30-eth0_g0_1219-21kworker/1:211:34:221
121750390irq/30-eth0_g0_1219-21kworker/1:209:46:571
121750390irq/30-eth0_g0_0-21swapper/111:14:261
121750390irq/30-eth0_g0_0-21swapper/110:06:181
121750390irq/30-eth0_g0_0-21swapper/109:54:131
121750390irq/30-eth0_g0_0-21swapper/109:32:251
121650390irq/29-eth0_g0_31ksoftirqd/009:54:260
121650390irq/29-eth0_g0_31ksoftirqd/008:39:340
121650390irq/29-eth0_g0_13-21kworker/0:111:18:480
121650390irq/29-eth0_g0_13-21kworker/0:110:41:130
121650390irq/29-eth0_g0_13-21kworker/0:110:24:220
121650390irq/29-eth0_g0_13-21kworker/0:110:09:240
121650390irq/29-eth0_g0_0-21swapper/012:34:250
121650390irq/29-eth0_g0_0-21swapper/012:34:250
121390ksoftirqd/1121650irq/29-eth0_g0_08:30:521
892999382cyclictest14622-21grep07:29:371
892999381cyclictest17004-21sendmail_mailst12:04:321
121750380irq/30-eth0_g0_1219-21kworker/1:211:50:551
121750380irq/30-eth0_g0_1219-21kworker/1:211:50:551
121750380irq/30-eth0_g0_1219-21kworker/1:211:05:121
121750380irq/30-eth0_g0_121ksoftirqd/110:10:181
121750380irq/30-eth0_g0_0-21swapper/112:28:541
121650380irq/29-eth0_g0_3632-21unixbench_multi11:09:330
121650380irq/29-eth0_g0_31ksoftirqd/010:20:500
121650380irq/29-eth0_g0_1964-21runrttasks07:19:530
121650380irq/29-eth0_g0_13-21kworker/0:112:22:430
121650380irq/29-eth0_g0_13-21kworker/0:112:08:080
121650380irq/29-eth0_g0_13-21kworker/0:111:05:030
121650380irq/29-eth0_g0_13-21kworker/0:110:54:570
121650380irq/29-eth0_g0_13-21kworker/0:109:59:300
892999372cyclictest16332-21latency_hist07:39:131
892999372cyclictest16332-21latency_hist07:39:131
121750370irq/30-eth0_g0_7392-21taskset11:24:421
121750370irq/30-eth0_g0_1219-21kworker/1:211:58:461
121750370irq/30-eth0_g0_1219-21kworker/1:211:45:551
121750370irq/30-eth0_g0_1219-21kworker/1:211:31:191
121750370irq/30-eth0_g0_1219-21kworker/1:211:00:511
121750370irq/30-eth0_g0_1219-21kworker/1:210:46:321
121750370irq/30-eth0_g0_1219-21kworker/1:209:24:551
121750370irq/30-eth0_g0_1219-21kworker/1:209:24:551
121650370irq/29-eth0_g0_8817-21/usr/sbin/munin09:19:290
121650370irq/29-eth0_g0_15201-21awk09:44:330
121650370irq/29-eth0_g0_13-21kworker/0:111:53:330
121650370irq/29-eth0_g0_13-21kworker/0:111:53:330
121650370irq/29-eth0_g0_13-21kworker/0:111:28:510
121650370irq/29-eth0_g0_13-21kworker/0:109:38:120
121650370irq/29-eth0_g0_0-21swapper/012:26:020
892999362cyclictest2109-21lldpd07:14:191
892999361cyclictest5234-21runrttasks09:04:311
892999361cyclictest28029-21grep08:24:331
121750360irq/30-eth0_g0_1219-21kworker/1:210:55:571
121650360irq/29-eth0_g0_4200-21unixbench_multi08:59:340
121650360irq/29-eth0_g0_31ksoftirqd/012:30:180
121650360irq/29-eth0_g0_31ksoftirqd/012:30:180
121650360irq/29-eth0_g0_31ksoftirqd/007:46:040
121650360irq/29-eth0_g0_31ksoftirqd/007:46:040
121650360irq/29-eth0_g0_28820-21if_eth008:29:250
121650360irq/29-eth0_g0_28070-21unixbench_singl08:24:340
121650360irq/29-eth0_g0_24381-21unixbench_singl08:09:360
121650360irq/29-eth0_g0_20688-21unixbench_multi07:54:320
121650360irq/29-eth0_g0_1964-21runrttasks08:44:570
121650360irq/29-eth0_g0_1964-21runrttasks08:36:130
121650360irq/29-eth0_g0_1964-21runrttasks08:00:090
121650360irq/29-eth0_g0_19484-21unixbench_singl07:49:350
121650360irq/29-eth0_g0_13-21kworker/0:111:42:290
121650360irq/29-eth0_g0_13-21kworker/0:109:26:000
121650360irq/29-eth0_g0_13-21kworker/0:109:26:000
121650360irq/29-eth0_g0_0-21swapper/008:04:250
892999352cyclictest4199-21unixbench_multi08:59:341
892999351cyclictest31460-21seq08:39:301
892999351cyclictest30155-21grep08:34:281
892999351cyclictest24918-21chrt08:14:131
892999351cyclictest22793-21expr08:04:291
892999351cyclictest21914-21sed07:59:331
892999351cyclictest18946-21sed07:49:251
892999351cyclictest0-21swapper/108:09:211
892999351cyclictest0-21swapper/107:19:351
121750350irq/30-eth0_g0_18224-21grep07:44:351
121750350irq/30-eth0_g0_18224-21grep07:44:351
121650350irq/29-eth0_g0_26129-21latency_hist08:19:130
121650350irq/29-eth0_g0_17042-21unixbench_singl07:39:360
121650350irq/29-eth0_g0_17042-21unixbench_singl07:39:360
121650350irq/29-eth0_g0_14610-21unixbench_singl07:29:370
121650350irq/29-eth0_g0_13453-21runrttasks07:24:490
121350ksoftirqd/1121650irq/29-eth0_g0_08:54:261
892999341cyclictest93122sleep107:09:271
121650340irq/29-eth0_g0_9569-21awk07:09:320
121650340irq/29-eth0_g0_27331-21sort08:24:130
892999331cyclictest20041-21egrep07:54:211
892999321cyclictest13158-21proc_pri07:24:351
121650320irq/29-eth0_g0_1964-21runrttasks07:18:150
121650320irq/29-eth0_g0_16898-21taskset07:39:341
121650320irq/29-eth0_g0_16898-21taskset07:39:341
121650320irq/29-eth0_g0_1342-21latency08:49:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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