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2026-07-02 - 03:30

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 Jul 02, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
767321410sleep1121650irq/29-eth0_g0_21:17:191
1211350ksoftirqd/1121750irq/30-eth0_g0_00:13:501
45872850sleep0121750irq/30-eth0_g0_23:16:150
121830ksoftirqd/1121750irq/30-eth0_g0_22:39:011
261662770sleep1121750irq/30-eth0_g0_22:33:251
121750ksoftirqd/1121650irq/29-eth0_g0_23:03:390
121700ksoftirqd/1105362sleep021:28:390
175152690sleep1121650irq/29-eth0_g0_21:57:411
94492680sleep1121650irq/29-eth0_g0_23:35:421
94492680sleep1121650irq/29-eth0_g0_23:35:421
105982640sleep1121650irq/29-eth0_g0_23:39:491
316852620sleep0121650irq/29-eth0_g0_22:53:430
121610ksoftirqd/1121750irq/30-eth0_g0_22:50:330
121520ksoftirqd/1121750irq/30-eth0_g0_00:23:511
121510ksoftirqd/1121750irq/30-eth0_g0_22:22:011
121500ksoftirqd/1121650irq/29-eth0_g0_22:29:260
247112490sleep0121650irq/29-eth0_g0_22:25:510
121480ksoftirqd/1121750irq/30-eth0_g0_00:29:590
121470ksoftirqd/1121750irq/30-eth0_g0_23:51:191
121470ksoftirqd/1121750irq/30-eth0_g0_23:25:161
121470ksoftirqd/1121650irq/29-eth0_g0_21:04:561
121750450irq/30-eth0_g0_11243-21chrt21:30:581
121450ksoftirqd/1121750irq/30-eth0_g0_23:04:261
121450ksoftirqd/1121750irq/30-eth0_g0_22:10:531
121450ksoftirqd/1121750irq/30-eth0_g0_21:11:201
121450ksoftirqd/1121650irq/29-eth0_g0_19:11:161
121440ksoftirqd/1121750irq/30-eth0_g0_22:42:230
121440ksoftirqd/1121650irq/29-eth0_g0_19:32:581
121650430irq/29-eth0_g0_0-21swapper/019:03:440
121430ksoftirqd/1121750irq/30-eth0_g0_22:12:210
121750420irq/30-eth0_g0_1219-21kworker/1:222:00:501
121420ksoftirqd/1121650irq/29-eth0_g0_22:45:001
121420ksoftirqd/1121650irq/29-eth0_g0_22:45:001
830299412cyclictest3640-21grep20:58:461
830299412cyclictest3640-21grep20:58:461
121750410irq/30-eth0_g0_1219-21kworker/1:200:12:381
121650410irq/29-eth0_g0_13-21kworker/0:123:38:160
121650410irq/29-eth0_g0_13-21kworker/0:123:38:160
121650410irq/29-eth0_g0_13-21kworker/0:123:11:210
8302994027cyclictest1964-21runrttasks22:49:401
235452400sleep0121650irq/29-eth0_g0_00:33:390
121750400irq/30-eth0_g0_13769-21missed_timers23:53:401
121750400irq/30-eth0_g0_1219-21kworker/1:222:14:471
121650400irq/29-eth0_g0_1964-21runrttasks20:05:510
121650400irq/29-eth0_g0_1964-21runrttasks20:05:510
121650400irq/29-eth0_g0_13-21kworker/0:122:02:000
121650400irq/29-eth0_g0_13-21kworker/0:121:55:480
121650400irq/29-eth0_g0_13-21kworker/0:121:18:300
121650400irq/29-eth0_g0_13-21kworker/0:121:08:500
121650400irq/29-eth0_g0_121ksoftirqd/123:25:360
121650400irq/29-eth0_g0_121ksoftirqd/123:18:461
121400ksoftirqd/1121750irq/30-eth0_g0_21:43:580
121400ksoftirqd/1121650irq/29-eth0_g0_00:33:381
830299391cyclictest24962-21cat22:28:251
830299391cyclictest11247-21seq19:18:411
121750390irq/30-eth0_g0_3255-21runrttasks23:09:581
121650390irq/29-eth0_g0_23509-21ntp_states20:08:420
121650390irq/29-eth0_g0_13578-21taskset21:39:380
121650390irq/29-eth0_g0_13-21kworker/0:122:13:460
121650390irq/29-eth0_g0_13-21kworker/0:121:34:530
121650390irq/29-eth0_g0_13-21kworker/0:121:23:260
121650390irq/29-eth0_g0_13-21kworker/0:100:15:270
121390ksoftirqd/1121750irq/30-eth0_g0_23:44:280
121390ksoftirqd/1121750irq/30-eth0_g0_23:41:220
121390ksoftirqd/1121750irq/30-eth0_g0_23:29:330
121390ksoftirqd/1121750irq/30-eth0_g0_23:21:280
121390ksoftirqd/1121750irq/30-eth0_g0_22:44:390
121390ksoftirqd/1121750irq/30-eth0_g0_22:44:390
121390ksoftirqd/1121750irq/30-eth0_g0_22:20:560
121390ksoftirqd/1121750irq/30-eth0_g0_22:05:330
121390ksoftirqd/1121750irq/30-eth0_g0_21:01:350
121390ksoftirqd/1121750irq/30-eth0_g0_21:01:350
121390ksoftirqd/1121750irq/30-eth0_g0_20:39:560
121390ksoftirqd/1121750irq/30-eth0_g0_20:38:230
121390ksoftirqd/1121750irq/30-eth0_g0_20:15:330
121390ksoftirqd/1121750irq/30-eth0_g0_19:42:300
121390ksoftirqd/1121750irq/30-eth0_g0_00:23:330
121390ksoftirqd/1121750irq/30-eth0_g0_00:20:350
121390ksoftirqd/1121750irq/30-eth0_g0_00:09:560
121750380irq/30-eth0_g0_32351-21latency_hist22:58:251
121750380irq/30-eth0_g0_31ksoftirqd/023:53:580
121750380irq/30-eth0_g0_1219-21kworker/1:221:24:211
121750380irq/30-eth0_g0_1219-21kworker/1:221:19:001
121750380irq/30-eth0_g0_0-21swapper/123:43:251
121650380irq/29-eth0_g0_32343-21unixbench_multi20:43:470
121650380irq/29-eth0_g0_31ksoftirqd/023:50:290
121650380irq/29-eth0_g0_13-21kworker/0:123:58:440
121650380irq/29-eth0_g0_13-21kworker/0:122:33:590
121650380irq/29-eth0_g0_10057-21open_inodes19:13:440
121380ksoftirqd/1121750irq/30-eth0_g0_21:52:040
121380ksoftirqd/1121750irq/30-eth0_g0_21:06:110
121380ksoftirqd/1121750irq/30-eth0_g0_20:19:050
121380ksoftirqd/1121750irq/30-eth0_g0_00:04:130
121380ksoftirqd/1121750irq/30-eth0_g0_00:04:130
121380ksoftirqd/1121650irq/29-eth0_g0_21:48:421
830299374cyclictest0-21swapper/121:40:491
830299371cyclictest7717-21seq23:28:411
830299371cyclictest754-21memory20:48:391
830299371cyclictest2109-21lldpd23:14:391
830299371cyclictest15160-21grep21:48:251
121750370irq/30-eth0_g0_830199cyclictest19:38:250
121750370irq/30-eth0_g0_19719-21taskset22:04:481
121750370irq/30-eth0_g0_1964-21runrttasks00:19:251
121750370irq/30-eth0_g0_1219-21kworker/1:222:33:331
121750370irq/30-eth0_g0_1219-21kworker/1:200:01:201
121750370irq/30-eth0_g0_121ksoftirqd/100:28:251
121650370irq/29-eth0_g0_28004-21sshd20:28:270
121650370irq/29-eth0_g0_13-21kworker/0:123:00:440
121650370irq/29-eth0_g0_13-21kworker/0:121:14:510
121650370irq/29-eth0_g0_11446-21cat19:18:450
830299361cyclictest29314-21df_abs20:33:361
830299361cyclictest23781-21sed20:08:461
830299361cyclictest22404-21chrt20:03:431
830299361cyclictest22404-21chrt20:03:431
830299361cyclictest19891-21proc_pri19:53:431
830299361cyclictest17710-21taskset19:43:471
830299361cyclictest11868-21grep21:33:421
121750360irq/30-eth0_g0_1964-21runrttasks19:05:291
121650360irq/29-eth0_g0_21380-21vmstat19:58:480
121650360irq/29-eth0_g0_1964-21runrttasks20:55:310
121650360irq/29-eth0_g0_1964-21runrttasks19:11:190
121360ksoftirqd/1121750irq/30-eth0_g0_19:53:020
121360ksoftirqd/1121750irq/30-eth0_g0_19:47:050
121360ksoftirqd/1121650irq/29-eth0_g0_19:33:501
830299351cyclictest24938-21sort20:13:471
121750350irq/30-eth0_g0_16144-21irqstats00:03:431
121750350irq/30-eth0_g0_16144-21irqstats00:03:431
121750350irq/30-eth0_g0_0-21swapper/122:59:121
121650350irq/29-eth0_g0_26945-21df_inode20:23:370
121350ksoftirqd/1121750irq/30-eth0_g0_19:25:130
121350ksoftirqd/1121650irq/29-eth0_g0_19:18:251
830299342cyclictest32083-21ntp_offset20:43:421
830299341cyclictest28659-21unixbench_multi20:28:451
830299341cyclictest21390-21vmstat19:58:481
830299341cyclictest16394-21unixbench_multi19:38:461
121750340irq/30-eth0_g0_12951-21sshd19:25:281
121650340irq/29-eth0_g0_1964-21runrttasks20:48:370
121650340irq/29-eth0_g0_19602-21taskset19:53:370
121650340irq/29-eth0_g0_13765-21ps19:28:430
830299331cyclictest30890-21/usr/sbin/munin20:38:431
830299331cyclictest0-21swapper/120:27:061
121650330irq/29-eth0_g0_830299cyclictest20:53:401
121650330irq/29-eth0_g0_0-21swapper/120:18:341
830299311cyclictest18504-21missed_timers19:48:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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