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2026-08-15 - 03:56

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
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 all highest latencies:
System rack3slot5s.osadl.org (updated Sat Aug 15, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1946121050sleep1121650irq/29-eth0_g0_22:19:291
40662910sleep0121750irq/30-eth0_g0_23:27:360
202832810chrt121750irq/30-eth0_g0_22:21:591
202832810chrt121750irq/30-eth0_g0_22:21:591
305812690sleep0121650irq/29-eth0_g0_23:05:200
88542670sleep1121750irq/30-eth0_g0_21:36:501
121600ksoftirqd/1121750irq/30-eth0_g0_19:45:521
109872560sleep0121650irq/29-eth0_g0_21:45:480
121530ksoftirqd/1121750irq/30-eth0_g0_23:31:151
121510ksoftirqd/1121650irq/29-eth0_g0_22:00:571
121500ksoftirqd/1121750irq/30-eth0_g0_21:06:481
167942490sleep0121750irq/30-eth0_g0_19:56:540
147142490sleep1121750irq/30-eth0_g0_00:11:551
121480ksoftirqd/1121650irq/29-eth0_g0_22:54:301
121650460irq/29-eth0_g0_20131-21ntp_offset22:21:570
121650460irq/29-eth0_g0_20131-21ntp_offset22:21:570
121460ksoftirqd/1121750irq/30-eth0_g0_23:05:201
92922440sleep0121650irq/29-eth0_g0_23:51:140
77642440sleep0121650irq/29-eth0_g0_23:42:450
121750440irq/30-eth0_g0_1219-21kworker/1:223:59:301
121650440irq/29-eth0_g0_13-21kworker/0:122:20:560
121440ksoftirqd/1121750irq/30-eth0_g0_22:43:560
121440ksoftirqd/1121750irq/30-eth0_g0_21:21:500
121440ksoftirqd/1121750irq/30-eth0_g0_21:21:500
4187994337cyclictest17310-21chrt00:21:591
121750430irq/30-eth0_g0_1219-21kworker/1:223:09:481
121750430irq/30-eth0_g0_1219-21kworker/1:221:31:131
121750430irq/30-eth0_g0_1219-21kworker/1:200:09:001
121750430irq/30-eth0_g0_121ksoftirqd/122:40:411
121750430irq/30-eth0_g0_121ksoftirqd/122:09:451
121650430irq/29-eth0_g0_31ksoftirqd/021:52:270
121430ksoftirqd/1121650irq/29-eth0_g0_21:32:011
4187994236cyclictest8255-21taskset23:46:491
121750420irq/30-eth0_g0_15950-21ntp_states00:16:561
121750420irq/30-eth0_g0_1219-21kworker/1:221:46:541
121650420irq/29-eth0_g0_31ksoftirqd/023:40:140
121650420irq/29-eth0_g0_13-21kworker/0:123:33:010
121650420irq/29-eth0_g0_0-21swapper/000:35:370
121750410irq/30-eth0_g0_1219-21kworker/1:222:42:361
121750410irq/30-eth0_g0_1219-21kworker/1:221:54:451
121650410irq/29-eth0_g0_31ksoftirqd/023:22:340
121650410irq/29-eth0_g0_31ksoftirqd/022:10:400
121650410irq/29-eth0_g0_13-21kworker/0:123:19:500
121650410irq/29-eth0_g0_13-21kworker/0:123:19:500
121650410irq/29-eth0_g0_13-21kworker/0:122:49:480
121650410irq/29-eth0_g0_13-21kworker/0:122:14:590
121650410irq/29-eth0_g0_13-21kworker/0:121:16:510
121650410irq/29-eth0_g0_13-21kworker/0:100:27:550
121410ksoftirqd/1121650irq/29-eth0_g0_19:51:591
4187994035cyclictest19011-21/usr/sbin/munin20:06:501
4187994035cyclictest17094-21sendmail_mailqu19:57:001
4187994032cyclictest23332-21unixbench_multi20:21:591
121750400irq/30-eth0_g0_1219-21kworker/1:223:44:071
121750400irq/30-eth0_g0_1219-21kworker/1:221:12:501
121750400irq/30-eth0_g0_121ksoftirqd/121:25:411
121750400irq/30-eth0_g0_121ksoftirqd/121:25:411
121750400irq/30-eth0_g0_121ksoftirqd/121:16:541
121750400irq/30-eth0_g0_121ksoftirqd/100:35:041
121750400irq/30-eth0_g0_0-21swapper/100:27:521
121650400irq/29-eth0_g0_31959-21grep20:57:010
121650400irq/29-eth0_g0_31562-21chrt23:07:290
121650400irq/29-eth0_g0_13-21kworker/0:123:13:210
121650400irq/29-eth0_g0_13-21kworker/0:122:01:170
121650400irq/29-eth0_g0_13-21kworker/0:100:17:050
121650400irq/29-eth0_g0_13-21kworker/0:100:15:490
121650400irq/29-eth0_g0_0-21swapper/019:01:500
121400ksoftirqd/1121750irq/30-eth0_g0_21:36:160
121400ksoftirqd/1121650irq/29-eth0_g0_22:31:441
4187993934cyclictest10352-21taskset21:41:561
4187993933cyclictest21656-21unixbench_singl22:27:001
4187993930cyclictest0-21swapper/123:56:141
34572390sleep0121650irq/29-eth0_g0_21:13:550
121750390irq/30-eth0_g0_1219-21kworker/1:223:16:541
121750390irq/30-eth0_g0_1219-21kworker/1:223:16:541
121750390irq/30-eth0_g0_1219-21kworker/1:222:15:111
121650390irq/29-eth0_g0_9393-21awk21:37:000
121650390irq/29-eth0_g0_8655-21head19:22:010
121650390irq/29-eth0_g0_7935-21latency_hist19:21:390
121650390irq/29-eth0_g0_1964-21runrttasks22:52:590
121650390irq/29-eth0_g0_1964-21runrttasks19:42:010
121650390irq/29-eth0_g0_18338-21mailstats20:02:000
121650390irq/29-eth0_g0_13-21kworker/0:123:55:430
121650390irq/29-eth0_g0_13-21kworker/0:122:02:530
121650390irq/29-eth0_g0_13-21kworker/0:121:09:400
121650390irq/29-eth0_g0_13-21kworker/0:100:00:290
4187993832cyclictest4764-21latency23:31:541
121750380irq/30-eth0_g0_1219-21kworker/1:222:58:461
121750380irq/30-eth0_g0_1219-21kworker/1:222:01:481
121750380irq/30-eth0_g0_0-21swapper/123:13:141
121750380irq/30-eth0_g0_0-21swapper/100:04:001
121650380irq/29-eth0_g0_31ksoftirqd/000:22:350
121650380irq/29-eth0_g0_1964-21runrttasks20:42:350
121650380irq/29-eth0_g0_1964-21runrttasks19:39:590
121650380irq/29-eth0_g0_13-21kworker/0:122:59:050
121650380irq/29-eth0_g0_13-21kworker/0:122:37:320
121650380irq/29-eth0_g0_13-21kworker/0:122:33:290
121650380irq/29-eth0_g0_13-21kworker/0:121:49:470
121650380irq/29-eth0_g0_13-21kworker/0:121:31:220
121650380irq/29-eth0_g0_13-21kworker/0:100:09:580
121650380irq/29-eth0_g0_13-21kworker/0:100:01:410
121380ksoftirqd/1121650irq/29-eth0_g0_20:50:041
121380ksoftirqd/1121650irq/29-eth0_g0_20:12:411
4187993732cyclictest14777-21unixbench_singl19:47:001
121750370irq/30-eth0_g0_6886-21sort23:41:391
121750370irq/30-eth0_g0_1219-21kworker/1:223:21:501
121750370irq/30-eth0_g0_0-21swapper/121:06:391
121650370irq/29-eth0_g0_5418-21latency_hist19:11:390
121650370irq/29-eth0_g0_5418-21latency_hist19:11:390
121650370irq/29-eth0_g0_28835-21/usr/sbin/munin20:47:020
121650370irq/29-eth0_g0_21049-21df_abs22:26:500
121650370irq/29-eth0_g0_1964-21runrttasks20:52:100
121650370irq/29-eth0_g0_1964-21runrttasks20:39:320
121650370irq/29-eth0_g0_1964-21runrttasks20:28:160
121650370irq/29-eth0_g0_1964-21runrttasks20:20:230
121650370irq/29-eth0_g0_1964-21runrttasks20:15:500
121650370irq/29-eth0_g0_15925-21grep19:51:580
4187993631cyclictest26029-21df_inode22:46:511
4187993630cyclictest7879-21latency_hist19:21:391
4187993623cyclictest5704-21if_eth019:11:541
4187993623cyclictest5704-21if_eth019:11:541
418799361cyclictest24317-21taskset20:26:541
121750360irq/30-eth0_g0_1964-21runrttasks19:05:211
121650360irq/29-eth0_g0_9508-21cat19:26:520
121650360irq/29-eth0_g0_1964-21runrttasks21:01:450
121650360irq/29-eth0_g0_1964-21runrttasks20:32:570
121650360irq/29-eth0_g0_1964-21runrttasks20:08:530
121650360irq/29-eth0_g0_10417-21/usr/sbin/munin19:31:560
4187993532cyclictest0-21swapper/119:21:511
4187993532cyclictest0-21swapper/119:07:041
4187993532cyclictest0-21swapper/119:07:041
4187993530cyclictest25385-21irqstats20:31:551
121750350irq/30-eth0_g0_11820-21/usr/sbin/munin19:36:511
121650350irq/29-eth0_g0_23217-21grep20:21:570
121650350irq/29-eth0_g0_14170-21df_abs19:46:500
4187993431cyclictest0-21swapper/119:26:511
4187993430cyclictest0-21swapper/120:41:501
4187993427cyclictest11318-21runrttasks19:33:561
418799341cyclictest18924-21latency_hist20:06:391
121650340irq/29-eth0_g0_0-21swapper/019:11:580
121650340irq/29-eth0_g0_0-21swapper/019:11:580
4187993327cyclictest22229-21runrttasks20:17:221
4187993326cyclictest31088-21runrttasks20:55:241
4187993227cyclictest264412sleep120:36:501
418799312cyclictest31667-21awk20:56:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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