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2026-06-21 - 05:00

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 Jun 21, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46552970sleep0121650irq/29-eth0_g0_22:18:280
121820ksoftirqd/1121750irq/30-eth0_g0_21:59:340
121630ksoftirqd/1121750irq/30-eth0_g0_22:34:091
121520ksoftirqd/183012sleep022:33:050
2294299491cyclictest31750-21/usr/sbin/munin00:09:141
2294299491cyclictest31750-21/usr/sbin/munin00:09:141
121490ksoftirqd/1121750irq/30-eth0_g0_22:55:271
121490ksoftirqd/1121650irq/29-eth0_g0_00:26:391
121470ksoftirqd/1121750irq/30-eth0_g0_22:15:171
121470ksoftirqd/1121750irq/30-eth0_g0_19:35:381
121470ksoftirqd/1121650irq/29-eth0_g0_23:06:421
121460ksoftirqd/1121650irq/29-eth0_g0_22:21:421
121460ksoftirqd/1121650irq/29-eth0_g0_20:27:321
121750450irq/30-eth0_g0_0-21swapper/120:14:151
121750450irq/30-eth0_g0_0-21swapper/120:14:151
121650450irq/29-eth0_g0_121ksoftirqd/123:20:430
121450ksoftirqd/1121750irq/30-eth0_g0_21:36:001
121450ksoftirqd/1121650irq/29-eth0_g0_20:19:401
313892440sleep0121750irq/30-eth0_g0_00:05:470
121650440irq/29-eth0_g0_13-21kworker/0:100:29:030
121440ksoftirqd/1121750irq/30-eth0_g0_23:50:491
121440ksoftirqd/1121750irq/30-eth0_g0_21:27:261
121750430irq/30-eth0_g0_1219-21kworker/1:223:38:591
121750430irq/30-eth0_g0_1219-21kworker/1:223:27:211
121650430irq/29-eth0_g0_22496-21unixbench_singl19:04:140
121650430irq/29-eth0_g0_13-21kworker/0:122:44:060
121650430irq/29-eth0_g0_13-21kworker/0:121:36:500
121650430irq/29-eth0_g0_13-21kworker/0:100:09:330
121650430irq/29-eth0_g0_13-21kworker/0:100:09:330
121430ksoftirqd/112232chrt19:50:160
121650420irq/29-eth0_g0_0-21swapper/020:29:010
121420ksoftirqd/1121750irq/30-eth0_g0_19:34:080
121420ksoftirqd/1121650irq/29-eth0_g0_21:33:001
2294299411cyclictest28086-21unixbench_singl21:39:141
2294299411cyclictest26161-21which23:44:111
155982410sleep0121750irq/30-eth0_g0_23:02:240
121650410irq/29-eth0_g0_19947-21munin-run21:08:510
121650410irq/29-eth0_g0_13-21kworker/0:123:40:230
121650410irq/29-eth0_g0_13-21kworker/0:123:38:130
121650410irq/29-eth0_g0_13-21kworker/0:123:17:170
121650410irq/29-eth0_g0_13-21kworker/0:123:17:170
121650410irq/29-eth0_g0_13-21kworker/0:121:55:510
121650410irq/29-eth0_g0_13-21kworker/0:121:42:170
121650410irq/29-eth0_g0_13-21kworker/0:121:21:310
121650410irq/29-eth0_g0_121ksoftirqd/121:18:280
121410ksoftirqd/1121750irq/30-eth0_g0_22:03:560
121410ksoftirqd/1121650irq/29-eth0_g0_23:58:551
121410ksoftirqd/1121650irq/29-eth0_g0_21:49:081
2294299402cyclictest17330-21memory23:09:051
2294299401cyclictest3334-21ps19:59:101
2294299401cyclictest15597-21ps20:49:121
129302400sleep0121650irq/29-eth0_g0_22:49:550
121750400irq/30-eth0_g0_1219-21kworker/1:223:57:101
121750400irq/30-eth0_g0_1219-21kworker/1:222:49:071
121750400irq/30-eth0_g0_1219-21kworker/1:222:05:101
121750400irq/30-eth0_g0_1219-21kworker/1:200:29:571
121750400irq/30-eth0_g0_121ksoftirqd/122:26:351
121750400irq/30-eth0_g0_121ksoftirqd/121:13:231
121650400irq/29-eth0_g0_31ksoftirqd/021:44:090
121650400irq/29-eth0_g0_13-21kworker/0:123:45:190
121650400irq/29-eth0_g0_13-21kworker/0:123:32:510
121650400irq/29-eth0_g0_13-21kworker/0:123:06:360
121650400irq/29-eth0_g0_13-21kworker/0:122:58:230
121650400irq/29-eth0_g0_13-21kworker/0:122:36:540
121650400irq/29-eth0_g0_13-21kworker/0:122:25:100
121650400irq/29-eth0_g0_13-21kworker/0:121:53:360
121650400irq/29-eth0_g0_13-21kworker/0:100:36:070
121650400irq/29-eth0_g0_13-21kworker/0:100:26:200
121400ksoftirqd/1121650irq/29-eth0_g0_23:36:481
121400ksoftirqd/1121650irq/29-eth0_g0_19:50:161
2294299391cyclictest32744-21munin-run19:48:521
2294299391cyclictest270842sleep119:24:081
2294299391cyclictest25606-21df_abs19:19:031
169112390sleep0121650irq/29-eth0_g0_20:54:120
169112390sleep0121650irq/29-eth0_g0_20:54:120
121750390irq/30-eth0_g0_1219-21kworker/1:200:14:421
121750390irq/30-eth0_g0_121ksoftirqd/123:33:441
121750390irq/30-eth0_g0_121ksoftirqd/121:56:001
121750390irq/30-eth0_g0_121ksoftirqd/121:21:171
121750390irq/30-eth0_g0_121ksoftirqd/100:38:321
121650390irq/29-eth0_g0_13-21kworker/0:123:27:170
121650390irq/29-eth0_g0_13-21kworker/0:123:13:390
121650390irq/29-eth0_g0_13-21kworker/0:122:41:280
121650390irq/29-eth0_g0_13-21kworker/0:121:09:440
121390ksoftirqd/1121750irq/30-eth0_g0_23:56:440
121390ksoftirqd/1121750irq/30-eth0_g0_23:52:330
2294299381cyclictest215012sleep121:14:071
2294299381cyclictest19722-21sh23:19:051
2294299381cyclictest18265-21grep20:59:131
121750380irq/30-eth0_g0_121ksoftirqd/122:59:581
121750380irq/30-eth0_g0_121ksoftirqd/122:39:561
121750380irq/30-eth0_g0_121ksoftirqd/122:31:571
121650380irq/29-eth0_g0_9464-21proc_pri20:24:110
121650380irq/29-eth0_g0_3418-21mailstats19:59:110
121650380irq/29-eth0_g0_13-21kworker/0:122:09:100
121650380irq/29-eth0_g0_13-21kworker/0:121:32:180
121650380irq/29-eth0_g0_13-21kworker/0:100:15:150
121380ksoftirqd/1121650irq/29-eth0_g0_22:45:111
2294299372cyclictest2109-21lldpd22:00:421
2294299371cyclictest30637-21latency19:39:051
2294299371cyclictest18666-21sh23:14:101
2294299371cyclictest18666-21sh23:14:101
2294299371cyclictest16678-21cat20:54:071
2294299371cyclictest16678-21cat20:54:071
2294299371cyclictest10229-21/usr/sbin/munin20:29:131
2294299371cyclictest0-21swapper/119:14:121
121750370irq/30-eth0_g0_22939-21munin-run19:08:521
121750370irq/30-eth0_g0_0-21swapper/100:04:241
121650370irq/29-eth0_g0_31911-21missed_timers19:44:060
121650370irq/29-eth0_g0_24026-21sshd19:12:160
121650370irq/29-eth0_g0_1964-21runrttasks20:50:560
121650370irq/29-eth0_g0_13-21kworker/0:122:23:210
121650370irq/29-eth0_g0_13-21kworker/0:100:21:450
121650370irq/29-eth0_g0_13-21kworker/0:100:01:330
121650370irq/29-eth0_g0_121ksoftirqd/121:46:241
121650370irq/29-eth0_g0_0-21swapper/021:24:040
2294299361cyclictest19945-21diskmemload00:19:491
121650360irq/29-eth0_g0_5997-21unixbench_singl20:09:140
121650360irq/29-eth0_g0_30651-21cat19:39:050
121650360irq/29-eth0_g0_28008-21df_abs19:29:040
121650360irq/29-eth0_g0_18263-21unixbench_singl20:59:130
121650360irq/29-eth0_g0_121ksoftirqd/122:10:321
2294299352cyclictest0-21swapper/120:34:081
2294299351cyclictest6146-21sshd20:10:161
2294299351cyclictest282292sleep119:29:071
2294299351cyclictest19184-21ntp_kernel_err21:04:071
2294299351cyclictest13292-21cat20:39:121
121650350irq/29-eth0_g0_31ksoftirqd/020:07:140
121650350irq/29-eth0_g0_2330-21unixbench_singl19:54:140
121650350irq/29-eth0_g0_1964-21runrttasks20:38:530
121650350irq/29-eth0_g0_1964-21runrttasks20:19:240
2294299341cyclictest0-21swapper/119:54:041
121650340irq/29-eth0_g0_7173-21grep20:14:130
121650340irq/29-eth0_g0_7173-21grep20:14:130
121650340irq/29-eth0_g0_1964-21runrttasks20:35:250
121650330irq/29-eth0_g0_26713-21/usr/sbin/munin19:24:120
121650330irq/29-eth0_g0_24501-21cat19:14:060
121650330irq/29-eth0_g0_13971-21df20:44:040
121650330irq/29-eth0_g0_0-21swapper/019:19:060
2294299321cyclictest0-21swapper/120:07:511
121750320irq/30-eth0_g0_23420-21awk19:09:091
121750320irq/30-eth0_g0_14514-21sort20:44:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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