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2026-09-17 - 06:14

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 Thu Sep 17, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2802021290sleep0121750irq/30-eth0_g0_23:39:490
95412990sleep1121650irq/29-eth0_g0_22:23:491
270392720sleep0121650irq/29-eth0_g0_19:10:360
121650600irq/29-eth0_g0_2547499cyclictest21:52:410
142102560sleep1121750irq/30-eth0_g0_22:41:051
121530ksoftirqd/1121750irq/30-eth0_g0_23:27:591
121650520irq/29-eth0_g0_2547499cyclictest22:15:370
121650520irq/29-eth0_g0_2547499cyclictest00:33:110
121650520irq/29-eth0_g0_2547499cyclictest00:25:360
180942480sleep1121750irq/30-eth0_g0_22:58:331
121750480irq/30-eth0_g0_2547499cyclictest21:05:390
121480ksoftirqd/1121650irq/29-eth0_g0_00:02:131
6212470sleep0121750irq/30-eth0_g0_19:35:320
121650470irq/29-eth0_g0_2547499cyclictest23:15:350
121450ksoftirqd/1121750irq/30-eth0_g0_00:20:111
121440ksoftirqd/1121750irq/30-eth0_g0_00:07:571
121750430irq/30-eth0_g0_1851-21head21:50:421
121750430irq/30-eth0_g0_1219-21kworker/1:222:32:341
121750430irq/30-eth0_g0_1219-21kworker/1:222:02:461
121430ksoftirqd/1121650irq/29-eth0_g0_21:28:000
121750420irq/30-eth0_g0_121ksoftirqd/121:37:031
121420ksoftirqd/1121750irq/30-eth0_g0_20:15:331
58792410sleep0121750irq/30-eth0_g0_22:08:590
121750410irq/30-eth0_g0_121ksoftirqd/121:45:371
121750410irq/30-eth0_g0_121ksoftirqd/121:15:251
121410ksoftirqd/1121750irq/30-eth0_g0_21:45:270
121750400irq/30-eth0_g0_1219-21kworker/1:223:54:041
121750400irq/30-eth0_g0_1219-21kworker/1:223:50:201
121750400irq/30-eth0_g0_121ksoftirqd/122:10:021
121750400irq/30-eth0_g0_121ksoftirqd/121:55:411
121750400irq/30-eth0_g0_121ksoftirqd/100:14:441
121650400irq/29-eth0_g0_241362sleep123:22:291
121650400irq/29-eth0_g0_1964-21runrttasks19:02:510
121650400irq/29-eth0_g0_19543-21tail20:50:430
121650400irq/29-eth0_g0_13-21kworker/0:123:11:330
121650400irq/29-eth0_g0_13-21kworker/0:122:30:380
121400ksoftirqd/1121750irq/30-eth0_g0_22:45:500
121750390irq/30-eth0_g0_1219-21kworker/1:223:31:151
121750390irq/30-eth0_g0_1219-21kworker/1:223:31:151
121750390irq/30-eth0_g0_1219-21kworker/1:222:11:101
121750390irq/30-eth0_g0_1219-21kworker/1:221:43:081
121750390irq/30-eth0_g0_1219-21kworker/1:221:43:081
121750390irq/30-eth0_g0_121ksoftirqd/119:43:581
121750390irq/30-eth0_g0_121ksoftirqd/100:30:211
121650390irq/29-eth0_g0_13-21kworker/0:121:12:140
121650390irq/29-eth0_g0_0-21swapper/020:00:330
121750380irq/30-eth0_g0_13-21kworker/0:121:57:050
121750380irq/30-eth0_g0_1219-21kworker/1:200:33:021
121750380irq/30-eth0_g0_121ksoftirqd/123:16:041
121750380irq/30-eth0_g0_121ksoftirqd/121:31:271
121650380irq/29-eth0_g0_4158-21/usr/sbin/munin22:00:400
121650380irq/29-eth0_g0_31318-21sed23:50:420
121650380irq/29-eth0_g0_31ksoftirqd/023:47:480
121650380irq/29-eth0_g0_1964-21runrttasks19:09:400
121650380irq/29-eth0_g0_16051-21/usr/sbin/munin22:50:350
121650380irq/29-eth0_g0_13-21kworker/0:123:09:560
121650380irq/29-eth0_g0_13-21kworker/0:121:19:240
121650380irq/29-eth0_g0_13-21kworker/0:100:02:560
121650380irq/29-eth0_g0_121ksoftirqd/121:11:241
121650380irq/29-eth0_g0_121ksoftirqd/119:15:411
121380ksoftirqd/1121750irq/30-eth0_g0_23:57:010
121380ksoftirqd/1121750irq/30-eth0_g0_23:38:231
121380ksoftirqd/1121650irq/29-eth0_g0_23:28:120
121380ksoftirqd/1121650irq/29-eth0_g0_00:22:281
25475993713cyclictest1219-21kworker/1:223:02:451
121750370irq/30-eth0_g0_1219-21kworker/1:223:11:511
121750370irq/30-eth0_g0_1219-21kworker/1:223:07:411
121750370irq/30-eth0_g0_1219-21kworker/1:221:23:301
121750370irq/30-eth0_g0_121ksoftirqd/122:45:241
121750370irq/30-eth0_g0_121ksoftirqd/122:35:311
121750370irq/30-eth0_g0_121ksoftirqd/122:26:511
121650370irq/29-eth0_g0_5701-21memory19:55:360
121650370irq/29-eth0_g0_3285-21if_err_eth000:10:330
121650370irq/29-eth0_g0_25123-21runrttasks19:01:251
121650370irq/29-eth0_g0_23652-21ntp_states23:20:390
121650370irq/29-eth0_g0_1964-21runrttasks21:03:120
121650370irq/29-eth0_g0_17665-21/usr/sbin/munin20:45:450
121650370irq/29-eth0_g0_14022-21cat22:40:420
121650370irq/29-eth0_g0_13-21kworker/0:123:40:280
121650370irq/29-eth0_g0_13-21kworker/0:123:03:270
121650370irq/29-eth0_g0_13-21kworker/0:122:58:490
121650370irq/29-eth0_g0_13-21kworker/0:122:35:390
121650370irq/29-eth0_g0_0-21swapper/019:30:410
121750360irq/30-eth0_g0_1219-21kworker/1:223:55:431
121650360irq/29-eth0_g0_9764-21head20:10:450
121650360irq/29-eth0_g0_2547499cyclictest00:07:310
121650360irq/29-eth0_g0_20785-21unixbench_singl20:55:420
121650360irq/29-eth0_g0_1964-21runrttasks20:06:240
121650360irq/29-eth0_g0_1964-21runrttasks19:54:350
121650360irq/29-eth0_g0_1964-21runrttasks19:41:110
121650360irq/29-eth0_g0_15124-21munin-run20:35:220
121650360irq/29-eth0_g0_13-21kworker/0:121:37:140
121650360irq/29-eth0_g0_13-21kworker/0:121:35:090
121650360irq/29-eth0_g0_13-21kworker/0:121:20:520
121650360irq/29-eth0_g0_0-21swapper/022:29:350
121750350irq/30-eth0_g0_29780-21find19:20:391
121750350irq/30-eth0_g0_1219-21kworker/1:222:51:171
121750350irq/30-eth0_g0_1219-21kworker/1:221:28:031
121650350irq/29-eth0_g0_8921-21chrt22:20:380
121650350irq/29-eth0_g0_28225-21if_eth019:15:350
121650350irq/29-eth0_g0_1964-21runrttasks23:31:530
121650350irq/29-eth0_g0_1964-21runrttasks23:31:530
121650350irq/29-eth0_g0_1964-21runrttasks20:38:500
121650350irq/29-eth0_g0_1964-21runrttasks20:25:380
121650350irq/29-eth0_g0_1964-21runrttasks00:16:420
121650350irq/29-eth0_g0_13-21kworker/0:122:12:280
121650350irq/29-eth0_g0_121ksoftirqd/123:40:221
121650350irq/29-eth0_g0_11960-21awk20:20:390
121650350irq/29-eth0_g0_10378-21df_abs20:15:330
2547599341cyclictest168432sleep120:40:401
121750340irq/30-eth0_g0_5503-21sed19:55:321
121750340irq/30-eth0_g0_4247-21df_abs19:50:321
121750340irq/30-eth0_g0_1219-21kworker/1:221:06:261
121750340irq/30-eth0_g0_11809-21ls20:20:351
121650340irq/29-eth0_g0_31164-21sed19:25:430
121650340irq/29-eth0_g0_1964-21runrttasks20:44:480
121650340irq/29-eth0_g0_0-21swapper/019:20:390
2547599332cyclictest18831-21latency_hist20:50:221
121750330irq/30-eth0_g0_8496-21unixbench_multi20:05:421
121750330irq/30-eth0_g0_3618-21unixbench_multi19:45:431
121750330irq/30-eth0_g0_13989-21/usr/sbin/munin20:30:331
121750330irq/30-eth0_g0_10259-21sort20:15:221
121650330irq/29-eth0_g0_7963-21unixbench_multi22:15:421
121650330irq/29-eth0_g0_13-21kworker/0:121:41:240
121650330irq/29-eth0_g0_13-21kworker/0:121:41:240
121650330irq/29-eth0_g0_0-21swapper/000:20:240
2547599321cyclictest25890-21missed_timers19:05:361
2547599320cyclictest0-21swapper/120:52:531
121750320irq/30-eth0_g0_670-21if_eth019:35:331
121750320irq/30-eth0_g0_31006-21sendmail_mailqu19:25:411
121750320irq/30-eth0_g0_26818-21cpu19:10:331
121750320irq/30-eth0_g0_20810-21unixbench_singl20:55:421
121750320irq/30-eth0_g0_15469-21sed20:35:351
121750320irq/30-eth0_g0_12921-21taskset20:25:331
121650320irq/29-eth0_g0_0-21swapper/019:45:370
2547599310cyclictest0-21swapper/121:01:201
121750310irq/30-eth0_g0_7298-21/usr/sbin/munin20:00:411
121750310irq/30-eth0_g0_2547599cyclictest19:30:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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