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2026-06-05 - 08:52

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 Fri Jun 05, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2150321260sleep0121750irq/30-eth0_g0_21:50:330
75862980sleep1121650irq/29-eth0_g0_23:07:201
120092730sleep1121750irq/30-eth0_g0_23:24:481
121700ksoftirqd/1121750irq/30-eth0_g0_21:18:001
121570ksoftirqd/1121750irq/30-eth0_g0_00:09:371
236092560sleep0121750irq/30-eth0_g0_21:59:500
121560ksoftirqd/11393099cyclictest23:34:511
121520ksoftirqd/1121750irq/30-eth0_g0_22:40:551
147452510sleep0121750irq/30-eth0_g0_23:35:070
121480ksoftirqd/1121650irq/29-eth0_g0_23:59:441
139332470sleep1121750irq/30-eth0_g0_23:34:301
121650470irq/29-eth0_g0_30866-21netstat22:29:450
121470ksoftirqd/1121750irq/30-eth0_g0_22:49:510
121460ksoftirqd/1121650irq/29-eth0_g0_21:27:481
121450ksoftirqd/1121650irq/29-eth0_g0_22:16:240
121650440irq/29-eth0_g0_31ksoftirqd/023:34:110
121440ksoftirqd/1121650irq/29-eth0_g0_20:57:591
121650430irq/29-eth0_g0_2037-21memory22:44:450
121650430irq/29-eth0_g0_13480-21grep19:04:500
121430ksoftirqd/1121650irq/29-eth0_g0_20:45:511
1393099428cyclictest10470-21df23:19:411
1393099421cyclictest6059-21unixbench_multi22:59:521
121750420irq/30-eth0_g0_246472sleep100:16:261
121750420irq/30-eth0_g0_1219-21kworker/1:223:55:581
121750420irq/30-eth0_g0_1219-21kworker/1:221:41:461
121750420irq/30-eth0_g0_1219-21kworker/1:200:07:241
121650420irq/29-eth0_g0_131kworker/0:123:41:350
121650420irq/29-eth0_g0_131kworker/0:123:41:350
121420ksoftirqd/1121650irq/29-eth0_g0_21:47:311
1393099411cyclictest26902-21unixbench_singl00:24:541
1393099411cyclictest26294-21unixbench_singl22:09:511
1393099411cyclictest15545-21wc19:14:441
121750410irq/30-eth0_g0_13-21kworker/0:123:19:400
121750410irq/30-eth0_g0_1219-21kworker/1:222:45:001
121650410irq/29-eth0_g0_31ksoftirqd/000:17:090
121650410irq/29-eth0_g0_13-21kworker/0:123:12:040
121650410irq/29-eth0_g0_13-21kworker/0:123:06:010
121650410irq/29-eth0_g0_0-21swapper/021:39:410
13930994024cyclictest2109-21lldpd19:44:451
1393099401cyclictest8545-21grep23:09:511
121750400irq/30-eth0_g0_1219-21kworker/1:223:39:491
121750400irq/30-eth0_g0_1219-21kworker/1:223:39:491
121750400irq/30-eth0_g0_1219-21kworker/1:222:22:511
121750400irq/30-eth0_g0_0-21swapper/122:30:551
121650400irq/29-eth0_g0_31ksoftirqd/000:12:170
121650400irq/29-eth0_g0_20084-21timerandwakeup21:44:510
121650400irq/29-eth0_g0_13-21kworker/0:123:01:310
121650400irq/29-eth0_g0_13-21kworker/0:122:54:590
121650400irq/29-eth0_g0_13-21kworker/0:122:35:150
121650400irq/29-eth0_g0_13-21kworker/0:121:24:520
121650400irq/29-eth0_g0_13-21kworker/0:121:22:360
121650400irq/29-eth0_g0_13-21kworker/0:100:33:000
121650400irq/29-eth0_g0_13-21kworker/0:100:22:550
121650400irq/29-eth0_g0_13-21kworker/0:100:03:540
121400ksoftirqd/1121650irq/29-eth0_g0_22:58:411
121400ksoftirqd/1121650irq/29-eth0_g0_21:05:431
1393099391cyclictest30544-21grep20:14:491
1393099391cyclictest30544-21grep20:14:491
121750390irq/30-eth0_g0_99202sleep123:15:591
121750390irq/30-eth0_g0_31ksoftirqd/023:49:360
121750390irq/30-eth0_g0_21620-21latency19:39:441
121750390irq/30-eth0_g0_21620-21latency19:39:441
121750390irq/30-eth0_g0_121ksoftirqd/123:51:261
121750390irq/30-eth0_g0_121ksoftirqd/121:24:181
121750390irq/30-eth0_g0_121ksoftirqd/100:33:261
121750390irq/30-eth0_g0_10833-21diskmemload22:34:471
121750390irq/30-eth0_g0_0-21swapper/121:09:421
121650390irq/29-eth0_g0_31812-21unixbench_singl20:19:520
121650390irq/29-eth0_g0_31ksoftirqd/022:39:420
121650390irq/29-eth0_g0_13-21kworker/0:123:17:300
121650390irq/29-eth0_g0_13-21kworker/0:121:19:120
121650390irq/29-eth0_g0_121ksoftirqd/121:33:050
121650390irq/29-eth0_g0_0-21swapper/022:24:510
121650390irq/29-eth0_g0_0-21swapper/022:09:290
121390ksoftirqd/113076-21/usr/sbin/munin19:04:431
121390ksoftirqd/1121650irq/29-eth0_g0_23:45:311
121390ksoftirqd/1121650irq/29-eth0_g0_22:07:261
121390ksoftirqd/1121650irq/29-eth0_g0_21:59:071
121390ksoftirqd/1121650irq/29-eth0_g0_20:28:311
1393099381cyclictest27518-21unixbench_singl22:14:501
1393099381cyclictest20036-21seq19:34:301
1393099381cyclictest10833-21diskmemload00:20:321
121750380irq/30-eth0_g0_1512-21/usr/sbin/munin20:29:461
121750380irq/30-eth0_g0_1219-21kworker/1:222:25:001
121750380irq/30-eth0_g0_1219-21kworker/1:200:35:431
121750380irq/30-eth0_g0_121ksoftirqd/121:31:321
121750380irq/30-eth0_g0_0-21swapper/121:38:481
121650380irq/29-eth0_g0_17720-21unixbench_singl21:34:520
121650380irq/29-eth0_g0_13-21kworker/0:123:54:330
121650380irq/29-eth0_g0_13-21kworker/0:123:44:550
121650380irq/29-eth0_g0_13-21kworker/0:122:21:320
121650380irq/29-eth0_g0_13-21kworker/0:121:55:490
121650380irq/29-eth0_g0_13-21kworker/0:121:12:100
121650380irq/29-eth0_g0_13-21kworker/0:100:36:490
121650380irq/29-eth0_g0_13-21kworker/0:100:25:520
121380ksoftirqd/1121650irq/29-eth0_g0_22:50:151
1393099371cyclictest8775-21cat20:59:441
1393099371cyclictest2437-21taskset20:34:411
121750370irq/30-eth0_g0_0-21swapper/121:53:051
121650370irq/29-eth0_g0_405-21processes20:24:480
121650370irq/29-eth0_g0_13-21kworker/0:122:13:320
121650370irq/29-eth0_g0_13-21kworker/0:100:06:020
121650370irq/29-eth0_g0_11540-21/usr/sbin/munin23:24:460
121650370irq/29-eth0_g0_10406-21unixbench_singl21:04:510
121370ksoftirqd/1121650irq/29-eth0_g0_20:04:441
121370ksoftirqd/1121650irq/29-eth0_g0_19:24:511
1393099360cyclictest0-21swapper/120:19:491
121650360irq/29-eth0_g0_7382-21df_abs20:54:390
121650360irq/29-eth0_g0_3512-21latency_hist20:39:300
121650360irq/29-eth0_g0_25708-21unixbench_singl19:54:500
121650360irq/29-eth0_g0_1964-21runrttasks20:59:390
121650360irq/29-eth0_g0_1964-21runrttasks20:12:070
121650360irq/29-eth0_g0_1964-21runrttasks20:12:070
121650360irq/29-eth0_g0_121ksoftirqd/122:00:561
121360ksoftirqd/1121650irq/29-eth0_g0_19:19:511
1393099351cyclictest151052sleep119:13:571
1393099351cyclictest0-21swapper/120:04:301
121750350irq/30-eth0_g0_24479-21unixbench_singl19:49:501
121650350irq/29-eth0_g0_26880-21unixbench_multi19:59:520
121650350irq/29-eth0_g0_23025-21proc_pri19:44:470
121650350irq/29-eth0_g0_20811-21unixbench_singl19:34:511
121650350irq/29-eth0_g0_20811-21unixbench_singl19:34:511
121650350irq/29-eth0_g0_20646-21/usr/sbin/munin19:34:480
121650350irq/29-eth0_g0_20646-21/usr/sbin/munin19:34:480
121650350irq/29-eth0_g0_1964-21runrttasks20:17:080
121650350irq/29-eth0_g0_1964-21runrttasks20:17:080
121650350irq/29-eth0_g0_18974-21df19:29:400
121650350irq/29-eth0_g0_17884-21if_err_eth019:24:420
121650350irq/29-eth0_g0_0-21swapper/020:39:510
1393099341cyclictest65632sleep120:49:481
121650340irq/29-eth0_g0_4889-21df_abs20:44:400
121650340irq/29-eth0_g0_27678-21ethtool20:04:430
121650340irq/29-eth0_g0_24441-21unixbench_multi19:49:500
121650340irq/29-eth0_g0_22472-21munin-run19:44:290
121650340irq/29-eth0_g0_22472-21munin-run19:44:290
121650340irq/29-eth0_g0_1964-21runrttasks20:49:310
121650330irq/29-eth0_g0_25983-21runrttasks19:57:351
121650330irq/29-eth0_g0_16912-21/usr/sbin/munin19:19:480
121650330irq/29-eth0_g0_15400-21df_inode19:14:410
121650330irq/29-eth0_g0_14125-21df_abs19:09:410
121650330irq/29-eth0_g0_1188-21df20:29:400
1393099321cyclictest298242sleep120:14:301
1393099321cyclictest298242sleep120:14:301
121750320irq/30-eth0_g0_2093-21snmpd20:44:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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