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2025-11-24 - 01:52

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 Mon Nov 24, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67972760sleep1121750irq/30-eth0_g0_21:35:051
240612660chrt121750irq/30-eth0_g0_20:34:591
121650ksoftirqd/1168272sleep020:05:000
313602600sleep0121650irq/29-eth0_g0_23:15:130
267652600sleep0121750irq/30-eth0_g0_22:58:460
188812540sleep0121650irq/29-eth0_g0_00:38:490
89532520sleep1121750irq/30-eth0_g0_21:44:591
121500ksoftirqd/1121650irq/29-eth0_g0_19:35:030
121490ksoftirqd/1121750irq/30-eth0_g0_23:50:021
121650470irq/29-eth0_g0_131kworker/0:121:24:270
121470ksoftirqd/1121750irq/30-eth0_g0_22:52:191
121470ksoftirqd/1121750irq/30-eth0_g0_00:26:561
145182460sleep1121750irq/30-eth0_g0_19:55:031
121650460irq/29-eth0_g0_31ksoftirqd/019:09:590
121650460irq/29-eth0_g0_31ksoftirqd/019:09:590
121750450irq/30-eth0_g0_1219-21kworker/1:221:25:181
121650450irq/29-eth0_g0_1703-21cpu19:04:540
121650450irq/29-eth0_g0_10447-21unixbench_multi21:50:040
121450ksoftirqd/1121750irq/30-eth0_g0_23:34:531
121450ksoftirqd/1121650irq/29-eth0_g0_23:44:561
121450ksoftirqd/1121650irq/29-eth0_g0_20:21:551
253432440sleep0121650irq/29-eth0_g0_22:51:270
121750440irq/30-eth0_g0_1219-21kworker/1:200:06:081
121750440irq/30-eth0_g0_121ksoftirqd/119:05:001
121650440irq/29-eth0_g0_13-21kworker/0:122:18:160
121440ksoftirqd/1121650irq/29-eth0_g0_22:39:421
121440ksoftirqd/1121650irq/29-eth0_g0_22:39:421
121440ksoftirqd/1121650irq/29-eth0_g0_21:09:541
121430ksoftirqd/1121750irq/30-eth0_g0_23:11:171
121430ksoftirqd/1121650irq/29-eth0_g0_00:17:010
121750420irq/30-eth0_g0_1219-21kworker/1:200:15:201
121650420irq/29-eth0_g0_31ksoftirqd/022:37:280
121650420irq/29-eth0_g0_31ksoftirqd/022:37:280
121650420irq/29-eth0_g0_31ksoftirqd/000:02:050
121650420irq/29-eth0_g0_13-21kworker/0:121:55:020
121650420irq/29-eth0_g0_121ksoftirqd/100:29:390
121420ksoftirqd/1121750irq/30-eth0_g0_22:43:040
121420ksoftirqd/1121650irq/29-eth0_g0_19:10:061
121420ksoftirqd/1121650irq/29-eth0_g0_19:10:061
121420ksoftirqd/1121650irq/29-eth0_g0_00:36:011
121750410irq/30-eth0_g0_32280-21diskmemload23:00:131
121750410irq/30-eth0_g0_2266-21ntp_kernel_err23:29:591
121750410irq/30-eth0_g0_0-21swapper/123:07:521
121750410irq/30-eth0_g0_0-21swapper/123:07:521
121650410irq/29-eth0_g0_13-21kworker/0:123:29:090
121650410irq/29-eth0_g0_121ksoftirqd/123:48:200
121410ksoftirqd/1121650irq/29-eth0_g0_23:14:571
285999401cyclictest16441-21grep22:15:021
121750400irq/30-eth0_g0_121ksoftirqd/121:16:581
121650400irq/29-eth0_g0_31ksoftirqd/023:01:490
121650400irq/29-eth0_g0_31ksoftirqd/021:34:570
121650400irq/29-eth0_g0_31ksoftirqd/020:24:580
121650400irq/29-eth0_g0_13-21kworker/0:123:13:450
121650400irq/29-eth0_g0_13-21kworker/0:122:30:290
121650400irq/29-eth0_g0_13-21kworker/0:122:27:270
121650400irq/29-eth0_g0_13-21kworker/0:121:29:580
121650400irq/29-eth0_g0_13-21kworker/0:121:10:490
121650400irq/29-eth0_g0_13-21kworker/0:100:13:530
121650400irq/29-eth0_g0_13-21kworker/0:100:13:530
121650400irq/29-eth0_g0_12947-21unixbench_singl22:00:070
121650400irq/29-eth0_g0_12947-21unixbench_singl22:00:070
121650400irq/29-eth0_g0_121ksoftirqd/123:39:561
121400ksoftirqd/1121650irq/29-eth0_g0_21:52:331
121750390irq/30-eth0_g0_32280-21diskmemload23:59:451
121750390irq/30-eth0_g0_31ksoftirqd/023:58:530
121750390irq/30-eth0_g0_1219-21kworker/1:223:21:221
121750390irq/30-eth0_g0_1219-21kworker/1:222:01:241
121750390irq/30-eth0_g0_1219-21kworker/1:222:01:241
121750390irq/30-eth0_g0_121ksoftirqd/122:48:081
121650390irq/29-eth0_g0_30815-21chrt21:01:560
121650390irq/29-eth0_g0_25405-21awk20:39:590
121650390irq/29-eth0_g0_1894-21runrttasks23:19:510
121650390irq/29-eth0_g0_13-21kworker/0:123:40:540
121650390irq/29-eth0_g0_13-21kworker/0:122:20:080
121650390irq/29-eth0_g0_13-21kworker/0:122:11:430
121650390irq/29-eth0_g0_1171-21taskset21:14:520
121390ksoftirqd/1121750irq/30-eth0_g0_21:20:051
121390ksoftirqd/1121650irq/29-eth0_g0_23:29:401
121390ksoftirqd/1121650irq/29-eth0_g0_21:08:511
121390ksoftirqd/1121650irq/29-eth0_g0_20:41:221
121390ksoftirqd/1121650irq/29-eth0_g0_19:39:531
121390ksoftirqd/1121650irq/29-eth0_g0_19:27:061
285999387cyclictest0-21swapper/121:43:271
285999381cyclictest19059-21head22:25:061
121750380irq/30-eth0_g0_1219-21kworker/1:222:13:391
121750380irq/30-eth0_g0_121ksoftirqd/123:56:301
121750380irq/30-eth0_g0_121ksoftirqd/122:29:511
121750380irq/30-eth0_g0_0-21swapper/122:23:051
121750380irq/30-eth0_g0_0-21swapper/122:06:331
121650380irq/29-eth0_g0_24042-21cat20:34:580
121650380irq/29-eth0_g0_1894-21runrttasks23:31:430
121650380irq/29-eth0_g0_1894-21runrttasks00:32:140
121650380irq/29-eth0_g0_13-21kworker/0:123:08:190
121650380irq/29-eth0_g0_13-21kworker/0:123:08:190
121650380irq/29-eth0_g0_13-21kworker/0:122:48:310
121650380irq/29-eth0_g0_13-21kworker/0:122:05:370
121650380irq/29-eth0_g0_13-21kworker/0:121:49:380
121650380irq/29-eth0_g0_13-21kworker/0:121:39:580
121650380irq/29-eth0_g0_13-21kworker/0:121:29:290
121650380irq/29-eth0_g0_13-21kworker/0:100:23:490
121650380irq/29-eth0_g0_13-21kworker/0:100:08:570
121380ksoftirqd/1121650irq/29-eth0_g0_20:26:431
285999372cyclictest29981-21df20:59:561
285999371cyclictest9723-21unixbench_multi19:35:041
285999371cyclictest54052sleep119:19:541
285999371cyclictest1894-21runrttasks21:31:101
285999371cyclictest14830-21unixbench_singl00:20:031
121750370irq/30-eth0_g0_18130-21proc_pri20:10:031
121750370irq/30-eth0_g0_121ksoftirqd/100:14:301
121750370irq/30-eth0_g0_121ksoftirqd/100:14:301
121750370irq/30-eth0_g0_0-21swapper/122:42:161
121650370irq/29-eth0_g0_31797-21unixbench_multi21:05:040
121650370irq/29-eth0_g0_28091-21unixbench_multi20:50:040
121650370irq/29-eth0_g0_23273-21grep20:30:030
121650370irq/29-eth0_g0_13-21kworker/0:123:36:270
121650370irq/29-eth0_g0_121ksoftirqd/122:59:281
121650370irq/29-eth0_g0_0-21swapper/023:53:390
285999362cyclictest12161-21tail19:45:051
285999361cyclictest26545-21cat20:44:571
285999361cyclictest23259-21sed20:30:031
285999361cyclictest11449-21open_inodes21:55:021
121650360irq/29-eth0_g0_20652-21sendmail_mailqu20:20:030
121650360irq/29-eth0_g0_13026-21latency19:49:570
121650360irq/29-eth0_g0_13026-21latency19:49:570
121650360irq/29-eth0_g0_11869-21missed_timers19:44:590
285999351cyclictest289272sleep120:54:551
285999351cyclictest27593-21seq20:49:541
121750350irq/30-eth0_g0_8521-21unixbench_multi19:30:051
121750350irq/30-eth0_g0_0-21swapper/100:31:481
121650350irq/29-eth0_g0_5869-21proc_pri19:20:030
121650350irq/29-eth0_g0_4469-21memory19:14:560
121650350irq/29-eth0_g0_26507-21/usr/sbin/munin20:44:570
121650350irq/29-eth0_g0_18954-21df20:14:560
121650350irq/29-eth0_g0_15411-21sshd19:59:560
121650350irq/29-eth0_g0_15411-21sshd19:59:560
121650350irq/29-eth0_g0_13985-21/usr/sbin/munin19:54:590
285999341cyclictest0-21swapper/119:49:561
285999341cyclictest0-21swapper/119:49:561
121650340irq/29-eth0_g0_7213-21cat19:25:040
121650340irq/29-eth0_g0_0-21swapper/020:55:020
121650340irq/29-eth0_g0_0-21swapper/019:30:050
285999331cyclictest15856-21sed20:00:041
285999331cyclictest15856-21sed20:00:041
121650330irq/29-eth0_g0_10347-21cpu19:39:550
285999321cyclictest0-21swapper/119:14:591
121750320irq/30-eth0_g0_18996-21df_abs20:14:561
121650320irq/29-eth0_g0_17664-21/usr/sbin/munin20:09:550
121320ksoftirqd/1121650irq/29-eth0_g0_20:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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