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2025-11-24 - 20:06

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 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2967821070sleep0121750irq/30-eth0_g0_12:24:300
121970ksoftirqd/1121750irq/30-eth0_g0_10:39:281
265122800sleep1121750irq/30-eth0_g0_09:59:411
220982770sleep1121750irq/30-eth0_g0_09:40:001
302342700sleep0121750irq/30-eth0_g0_08:00:030
75722680sleep0121650irq/29-eth0_g0_10:54:200
75722680sleep0121650irq/29-eth0_g0_10:54:200
258852630sleep1121650irq/29-eth0_g0_12:08:101
258852630sleep1121650irq/29-eth0_g0_12:08:101
321152540sleep0121750irq/30-eth0_g0_12:34:180
19272520sleep1121750irq/30-eth0_g0_10:29:581
121520ksoftirqd/1121650irq/29-eth0_g0_07:14:101
326602500chrt121750irq/30-eth0_g0_10:24:411
269752500sleep1121750irq/30-eth0_g0_12:11:351
121470ksoftirqd/1121750irq/30-eth0_g0_09:37:361
121470ksoftirqd/1121650irq/29-eth0_g0_09:31:021
121460ksoftirqd/1121650irq/29-eth0_g0_07:40:011
122702450sleep0121750irq/30-eth0_g0_11:11:530
121450ksoftirqd/1121750irq/30-eth0_g0_12:14:100
121750440irq/30-eth0_g0_1219-21kworker/1:211:54:581
121650440irq/29-eth0_g0_31ksoftirqd/010:37:280
121440ksoftirqd/1121650irq/29-eth0_g0_08:27:081
121750430irq/30-eth0_g0_16699-21unixbench_multi07:05:011
121750430irq/30-eth0_g0_1219-21kworker/1:211:19:581
121750430irq/30-eth0_g0_1219-21kworker/1:209:52:111
121650430irq/29-eth0_g0_121ksoftirqd/111:20:280
121430ksoftirqd/1121650irq/29-eth0_g0_09:19:411
121750420irq/30-eth0_g0_1219-21kworker/1:211:49:041
121750420irq/30-eth0_g0_121ksoftirqd/110:04:341
121650420irq/29-eth0_g0_31ksoftirqd/012:17:390
121650420irq/29-eth0_g0_31ksoftirqd/009:09:540
121650420irq/29-eth0_g0_1894-21runrttasks07:07:160
121420ksoftirqd/1121750irq/30-eth0_g0_12:25:050
121750410irq/30-eth0_g0_12192kworker/1:211:29:111
121750410irq/30-eth0_g0_1219-21kworker/1:212:02:571
121650410irq/29-eth0_g0_31ksoftirqd/012:00:010
121650410irq/29-eth0_g0_31ksoftirqd/009:24:540
121650410irq/29-eth0_g0_15608-21/usr/sbin/munin09:14:520
121650410irq/29-eth0_g0_13-21kworker/0:109:32:080
121650410irq/29-eth0_g0_121ksoftirqd/109:35:460
121410ksoftirqd/1121750irq/30-eth0_g0_11:50:021
121410ksoftirqd/1121650irq/29-eth0_g0_10:42:471
64592400sleep1121650irq/29-eth0_g0_10:49:451
64592400sleep1121650irq/29-eth0_g0_10:49:451
121750400irq/30-eth0_g0_1219-21kworker/1:212:34:491
121750400irq/30-eth0_g0_1219-21kworker/1:212:31:361
121750400irq/30-eth0_g0_1219-21kworker/1:211:36:081
121750400irq/30-eth0_g0_1219-21kworker/1:211:10:321
121650400irq/29-eth0_g0_1894-21runrttasks09:08:130
121650400irq/29-eth0_g0_13-21kworker/0:111:52:580
121650400irq/29-eth0_g0_13-21kworker/0:111:07:190
121650400irq/29-eth0_g0_13-21kworker/0:110:41:340
121650400irq/29-eth0_g0_13-21kworker/0:110:04:530
121650400irq/29-eth0_g0_121ksoftirqd/111:38:040
121400ksoftirqd/1121650irq/29-eth0_g0_12:25:051
175582390sleep0121750irq/30-eth0_g0_09:20:300
121750390irq/30-eth0_g0_31ksoftirqd/009:48:560
121750390irq/30-eth0_g0_1219-21kworker/1:212:19:141
121750390irq/30-eth0_g0_1219-21kworker/1:209:46:521
121650390irq/29-eth0_g0_1894-21runrttasks08:45:440
121650390irq/29-eth0_g0_13-21kworker/0:111:56:380
121650390irq/29-eth0_g0_13-21kworker/0:111:47:480
121650390irq/29-eth0_g0_13-21kworker/0:109:39:500
121390ksoftirqd/1121650irq/29-eth0_g0_10:56:361
121390ksoftirqd/1121650irq/29-eth0_g0_10:19:261
121390ksoftirqd/1121650irq/29-eth0_g0_07:20:001
1718299382cyclictest18654-21unixbench_multi09:25:051
121750380irq/30-eth0_g0_1219-21kworker/1:210:13:581
121750380irq/30-eth0_g0_121ksoftirqd/110:25:221
121650380irq/29-eth0_g0_9502-21cat11:00:020
121650380irq/29-eth0_g0_1894-21runrttasks08:58:080
121650380irq/29-eth0_g0_13-21kworker/0:112:07:250
121650380irq/29-eth0_g0_13-21kworker/0:112:07:250
121650380irq/29-eth0_g0_13-21kworker/0:111:25:150
121650380irq/29-eth0_g0_13-21kworker/0:110:16:170
121650380irq/29-eth0_g0_121ksoftirqd/112:35:230
121650380irq/29-eth0_g0_0-21swapper/010:57:200
121380ksoftirqd/1121650irq/29-eth0_g0_11:05:071
1718299372cyclictest5026-21processes08:30:021
1718299371cyclictest31168-21ntpq08:05:001
134842370sleep0121650irq/29-eth0_g0_11:16:440
121750370irq/30-eth0_g0_1219-21kworker/1:211:31:251
121750370irq/30-eth0_g0_1219-21kworker/1:211:03:191
121750370irq/30-eth0_g0_1219-21kworker/1:209:19:591
121750370irq/30-eth0_g0_1219-21kworker/1:209:14:361
121650370irq/29-eth0_g0_7277-21missed_timers08:39:590
121650370irq/29-eth0_g0_31ksoftirqd/010:00:290
121650370irq/29-eth0_g0_28708-21awk07:54:580
121650370irq/29-eth0_g0_24873-21/usr/sbin/munin07:39:550
121650370irq/29-eth0_g0_1894-21runrttasks10:19:510
121650370irq/29-eth0_g0_1894-21runrttasks09:02:080
121650370irq/29-eth0_g0_1894-21runrttasks08:26:010
121650370irq/29-eth0_g0_1894-21runrttasks07:50:060
121650370irq/29-eth0_g0_1894-21runrttasks07:14:360
121650370irq/29-eth0_g0_13-21kworker/0:111:30:500
121650370irq/29-eth0_g0_13-21kworker/0:109:57:070
121650370irq/29-eth0_g0_13-21kworker/0:109:51:120
121650370irq/29-eth0_g0_121ksoftirqd/110:27:110
121370ksoftirqd/1121650irq/29-eth0_g0_08:44:541
1718299362cyclictest6428-21taskset08:35:031
1718299362cyclictest26240-21/usr/sbin/munin07:44:561
1718299361cyclictest30746-21sort08:04:411
1718299361cyclictest2041-21lldpd07:58:001
1718299361cyclictest13537-21proc_pri09:05:011
1718299361cyclictest0-21swapper/108:10:231
121750360irq/30-eth0_g0_13-21kworker/0:111:43:250
121750360irq/30-eth0_g0_1219-21kworker/1:211:16:311
121750360irq/30-eth0_g0_1219-21kworker/1:210:08:171
121650360irq/29-eth0_g0_31ksoftirqd/008:49:580
121650360irq/29-eth0_g0_31ksoftirqd/008:49:580
121650360irq/29-eth0_g0_22723-21sendmail_mailqu07:30:010
121650360irq/29-eth0_g0_1894-21runrttasks08:12:230
121650360irq/29-eth0_g0_13-21kworker/0:110:46:000
121650360irq/29-eth0_g0_13-21kworker/0:110:30:160
121360ksoftirqd/1121650irq/29-eth0_g0_11:40:211
1718299351cyclictest2697-21grep08:20:041
1718299351cyclictest21642-21unixbench_singl07:25:041
1718299351cyclictest11051-21ntpq08:55:081
121750350irq/30-eth0_g0_5307-21df_abs10:44:531
121750350irq/30-eth0_g0_1219-21kworker/1:212:20:251
121650350irq/29-eth0_g0_31967-21latency_hist08:09:410
121650350irq/29-eth0_g0_31ksoftirqd/010:13:430
121650350irq/29-eth0_g0_19207-21sed07:15:040
121650350irq/29-eth0_g0_1894-21runrttasks07:26:060
121650350irq/29-eth0_g0_1894-21runrttasks07:20:390
121650350irq/29-eth0_g0_0-21swapper/007:45:010
1718299341cyclictest27625-21rt-features07:50:011
1718299341cyclictest22888-21head07:30:031
1718299341cyclictest1357-21mailstats08:15:011
121750340irq/30-eth0_g0_23420-21cpu07:34:521
121650340irq/29-eth0_g0_1894-21runrttasks07:36:520
121650340irq/29-eth0_g0_1451-21unixbench_multi08:15:030
121340ksoftirqd/17638-21unixbench_singl08:40:061
1718299332cyclictest18807-21cat07:14:571
121330ksoftirqd/110520-21taskset08:54:221
121330ksoftirqd/110520-21taskset08:54:221
17182993215cyclictest12519-21unixbench_multi09:00:081
121650320irq/29-eth0_g0_5062-21sendmail_mailtr08:30:030
121650320irq/29-eth0_g0_0-21swapper/008:34:530
121650310irq/29-eth0_g0_0-21swapper/008:20:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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