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2026-09-06 - 22:15

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Sun Sep 06, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137422770sleep1121750irq/30-eth0_g0_07:16:051
320562740sleep1121650irq/29-eth0_g0_10:43:011
109332730sleep1121750irq/30-eth0_g0_09:16:071
118952560sleep1121650irq/29-eth0_g0_11:32:511
121750490irq/30-eth0_g0_121ksoftirqd/107:41:071
182262480sleep0121650irq/29-eth0_g0_12:00:100
121750470irq/30-eth0_g0_1219-21kworker/1:210:28:591
216092460sleep1121750irq/30-eth0_g0_12:11:441
121750460irq/30-eth0_g0_121ksoftirqd/109:50:351
121750450irq/30-eth0_g0_121ksoftirqd/110:15:561
9702440sleep0121650irq/29-eth0_g0_10:49:420
155042440sleep1121750irq/30-eth0_g0_11:47:001
155042440sleep1121750irq/30-eth0_g0_11:47:001
121750440irq/30-eth0_g0_121ksoftirqd/111:51:071
121750440irq/30-eth0_g0_121ksoftirqd/110:46:071
121750440irq/30-eth0_g0_121ksoftirqd/109:05:591
121650440irq/29-eth0_g0_9657-21grep07:00:560
121750430irq/30-eth0_g0_121ksoftirqd/108:51:031
285082420sleep0121750irq/30-eth0_g0_10:29:320
121750420irq/30-eth0_g0_1219-21kworker/1:212:26:411
121750420irq/30-eth0_g0_121ksoftirqd/110:56:081
121650420irq/29-eth0_g0_24471-21unixbench_singl10:11:070
121650420irq/29-eth0_g0_121ksoftirqd/112:06:011
121650420irq/29-eth0_g0_121ksoftirqd/111:16:041
121650420irq/29-eth0_g0_121ksoftirqd/109:36:061
121650420irq/29-eth0_g0_0-21swapper/009:58:160
121650420irq/29-eth0_g0_0-21swapper/009:44:460
44382410sleep0121750irq/30-eth0_g0_11:01:480
197822410sleep1121750irq/30-eth0_g0_09:52:561
197822410sleep1121750irq/30-eth0_g0_09:52:561
136902410sleep0121650irq/29-eth0_g0_09:28:240
121750410irq/30-eth0_g0_1219-21kworker/1:212:17:501
121750410irq/30-eth0_g0_121ksoftirqd/112:33:411
121750410irq/30-eth0_g0_121ksoftirqd/110:55:111
121750410irq/30-eth0_g0_121ksoftirqd/110:06:521
121750410irq/30-eth0_g0_121ksoftirqd/108:21:021
121750410irq/30-eth0_g0_121ksoftirqd/108:01:011
121650410irq/29-eth0_g0_9783-21/usr/sbin/munin11:25:570
121650410irq/29-eth0_g0_5176-21missed_timers11:06:010
121650410irq/29-eth0_g0_3488-21taskset11:00:010
121650410irq/29-eth0_g0_121ksoftirqd/107:21:061
121410ksoftirqd/1121750irq/30-eth0_g0_09:50:050
121410ksoftirqd/110270-21grep07:01:061
308932400sleep1121750irq/30-eth0_g0_10:38:451
241712400sleep1121750irq/30-eth0_g0_12:22:591
121750400irq/30-eth0_g0_6332-21iostat11:10:591
121750400irq/30-eth0_g0_121ksoftirqd/111:44:021
121750400irq/30-eth0_g0_121ksoftirqd/109:23:181
121750400irq/30-eth0_g0_121ksoftirqd/108:56:061
121750400irq/30-eth0_g0_121ksoftirqd/108:06:051
211432390sleep1121750irq/30-eth0_g0_09:59:311
121750390irq/30-eth0_g0_29132-21chrt08:20:451
121750390irq/30-eth0_g0_121ksoftirqd/108:39:491
121650390irq/29-eth0_g0_30654-21chrt10:36:090
121650390irq/29-eth0_g0_23872-21timerandwakeup12:21:070
121650390irq/29-eth0_g0_23296-21vmstat10:06:090
121650390irq/29-eth0_g0_1964-21runrttasks11:49:230
121650390irq/29-eth0_g0_1964-21runrttasks11:49:230
121650390irq/29-eth0_g0_13-21kworker/0:112:33:180
121650390irq/29-eth0_g0_13-21kworker/0:112:10:450
121650390irq/29-eth0_g0_13-21kworker/0:111:43:550
121650390irq/29-eth0_g0_13-21kworker/0:110:30:590
121650390irq/29-eth0_g0_13-21kworker/0:110:19:230
121650390irq/29-eth0_g0_13-21kworker/0:109:10:270
121650390irq/29-eth0_g0_121ksoftirqd/109:27:371
121650390irq/29-eth0_g0_121ksoftirqd/107:11:061
121750380irq/30-eth0_g0_21920-21timerandwakeup10:01:061
121750380irq/30-eth0_g0_14545-21mailstats09:31:061
121750380irq/30-eth0_g0_1219-21kworker/1:210:30:571
121750380irq/30-eth0_g0_121ksoftirqd/112:01:111
121650380irq/29-eth0_g0_6164-21chrt11:10:560
121650380irq/29-eth0_g0_28462-21ps08:16:030
121650380irq/29-eth0_g0_2376-21unixbench_multi08:41:070
121650380irq/29-eth0_g0_1964-21runrttasks08:27:580
121650380irq/29-eth0_g0_1964-21runrttasks08:08:240
121650380irq/29-eth0_g0_1964-21runrttasks07:58:530
121650380irq/29-eth0_g0_1964-21runrttasks07:58:530
121650380irq/29-eth0_g0_16862-21munin-run07:30:460
121650380irq/29-eth0_g0_15261-21cpu09:35:570
121650380irq/29-eth0_g0_13-21kworker/0:112:28:210
121650380irq/29-eth0_g0_13-21kworker/0:112:14:430
121650380irq/29-eth0_g0_13-21kworker/0:111:37:220
121650380irq/29-eth0_g0_13-21kworker/0:111:25:260
121650380irq/29-eth0_g0_13-21kworker/0:111:16:060
121650380irq/29-eth0_g0_13-21kworker/0:110:04:530
121650380irq/29-eth0_g0_0-21swapper/007:41:050
121650380irq/29-eth0_g0_0-21swapper/007:11:030
121380ksoftirqd/1121650irq/29-eth0_g0_11:23:081
10732993824cyclictest3899-21sort11:01:001
121650370irq/29-eth0_g0_1964-21runrttasks08:11:030
121650370irq/29-eth0_g0_16513-21df_abs09:40:581
121650370irq/29-eth0_g0_1559-21awk10:51:010
121650370irq/29-eth0_g0_13-21kworker/0:112:18:360
121650370irq/29-eth0_g0_13-21kworker/0:109:54:270
121650370irq/29-eth0_g0_13-21kworker/0:109:54:270
121650370irq/29-eth0_g0_13-21kworker/0:109:35:280
121650370irq/29-eth0_g0_121ksoftirqd/109:11:101
121650370irq/29-eth0_g0_11992-21proc_pri09:21:030
121650370irq/29-eth0_g0_11168-21df_inode11:30:580
121650370irq/29-eth0_g0_0-21swapper/008:40:460
121370ksoftirqd/1121650irq/29-eth0_g0_07:31:131
121750360irq/30-eth0_g0_1219-21kworker/1:211:26:351
121750360irq/30-eth0_g0_0-21swapper/110:24:381
121650360irq/29-eth0_g0_6025-21unixbench_multi08:56:060
121650360irq/29-eth0_g0_4812-21unixbench_multi08:51:090
121650360irq/29-eth0_g0_3576-21unixbench_multi08:46:060
121650360irq/29-eth0_g0_31686-21/usr/sbin/munin08:31:020
121650360irq/29-eth0_g0_29926-21unixbench_singl08:21:070
121650360irq/29-eth0_g0_22513-21tail07:51:070
121650360irq/29-eth0_g0_22513-21tail07:51:070
121650360irq/29-eth0_g0_1964-21runrttasks07:48:570
121650360irq/29-eth0_g0_1964-21runrttasks07:22:590
121650360irq/29-eth0_g0_13970-21head07:16:080
121650360irq/29-eth0_g0_13-21kworker/0:112:00:590
121650360irq/29-eth0_g0_13-21kworker/0:110:20:570
121650360irq/29-eth0_g0_13-21kworker/0:109:10:500
121650360irq/29-eth0_g0_11509-21unixbench_singl07:06:060
121360ksoftirqd/1121750irq/30-eth0_g0_10:13:251
121750350irq/30-eth0_g0_20767-21df_abs07:45:571
121750350irq/30-eth0_g0_1219-21kworker/1:211:57:041
121750350irq/30-eth0_g0_1219-21kworker/1:211:39:251
121650350irq/29-eth0_g0_7153-21grep09:01:060
121650350irq/29-eth0_g0_7153-21grep09:01:060
121650350irq/29-eth0_g0_31833-21grep10:41:070
121650350irq/29-eth0_g0_1964-21runrttasks08:04:030
121650350irq/29-eth0_g0_1964-21runrttasks07:31:100
121650350irq/29-eth0_g0_18815-21grep07:36:070
121650350irq/29-eth0_g0_15991-21df_abs11:50:580
121650350irq/29-eth0_g0_0-21swapper/009:17:450
10732993521cyclictest3465-21awk08:46:041
10732993424cyclictest18184-21/usr/sbin/munin07:35:571
121750330irq/30-eth0_g0_26845-21df_abs08:10:571
121330ksoftirqd/1121650irq/29-eth0_g0_07:25:591
10732993321cyclictest306672sleep108:25:581
10732993321cyclictest11367-21chrt07:06:051
10732993319cyclictest5132-21seq11:06:001
121750320irq/30-eth0_g0_0-21swapper/108:41:051
121750320irq/30-eth0_g0_0-21swapper/107:51:041
121750320irq/30-eth0_g0_0-21swapper/107:51:041
121650320irq/29-eth0_g0_23757-21unixbench_singl07:56:071
121650320irq/29-eth0_g0_23757-21unixbench_singl07:56:071
10732993118cyclictest0-21swapper/108:35:301
121750300irq/30-eth0_g0_1964-21runrttasks09:04:501
121750300irq/30-eth0_g0_1964-21runrttasks09:04:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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