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2026-06-02 - 20:36

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 50 highest latencies:
System rack3slot5s.osadl.org (updated Tue Jun 02, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211370ksoftirqd/1121750irq/30-eth0_g0_10:16:531
121950ksoftirqd/1121750irq/30-eth0_g0_10:09:361
121860ksoftirqd/1121750irq/30-eth0_g0_07:49:541
121820ksoftirqd/1121650irq/29-eth0_g0_11:10:010
121810ksoftirqd/1121750irq/30-eth0_g0_11:06:331
7382790sleep1121750irq/30-eth0_g0_07:19:541
121770ksoftirqd/1121750irq/30-eth0_g0_09:35:161
121760ksoftirqd/1121750irq/30-eth0_g0_08:09:460
121650ksoftirqd/1121750irq/30-eth0_g0_08:09:441
121630ksoftirqd/1121750irq/30-eth0_g0_11:59:461
3019199542cyclictest10701-21ntp_states12:24:501
3019199542cyclictest0-21swapper/110:34:531
3019199531cyclictest28650-21grep11:24:561
3019199531cyclictest15588-21/usr/sbin/munin08:19:531
3019199521cyclictest27209-21diskmemload11:49:481
3019199511cyclictest1964-21runrttasks12:18:461
121750510irq/30-eth0_g0_121ksoftirqd/110:39:561
66262500sleep0121650irq/29-eth0_g0_12:09:430
3019199501cyclictest3410-21unixbench_multi07:29:571
3019199501cyclictest30283-21rt-features09:19:541
3019199501cyclictest27209-21diskmemload09:44:351
3019199501cyclictest27209-21diskmemload09:44:351
121490ksoftirqd/1121750irq/30-eth0_g0_09:33:321
3019199482cyclictest0-21swapper/110:54:561
3019199481cyclictest4232-21seq07:34:501
121750480irq/30-eth0_g0_0-21swapper/111:03:021
121480ksoftirqd/1121750irq/30-eth0_g0_08:19:490
121480ksoftirqd/1121650irq/29-eth0_g0_11:29:160
3019199471cyclictest27209-21diskmemload12:21:291
3019199471cyclictest0-21swapper/107:54:561
121750470irq/30-eth0_g0_121ksoftirqd/112:33:431
121750470irq/30-eth0_g0_121ksoftirqd/107:43:571
121650470irq/29-eth0_g0_3019199cyclictest09:10:301
121470ksoftirqd/1121750irq/30-eth0_g0_12:38:511
121470ksoftirqd/1121650irq/29-eth0_g0_10:52:561
3019199461cyclictest27209-21diskmemload11:46:221
3019199461cyclictest27209-21diskmemload11:46:221
3019199461cyclictest27209-21diskmemload11:24:351
3019199461cyclictest0-21swapper/111:29:551
121750460irq/30-eth0_g0_121ksoftirqd/109:14:571
121650460irq/29-eth0_g0_0-21swapper/007:09:350
3019199452cyclictest23586-21latency_hist08:54:361
30191994516cyclictest12249-21if_eth010:19:481
3019199451cyclictest30931-21unixbench_multi07:09:571
121750450irq/30-eth0_g0_25945-21ntpq11:14:531
121750450irq/30-eth0_g0_121ksoftirqd/111:58:261
121750450irq/30-eth0_g0_121ksoftirqd/109:54:551
3019199441cyclictest0-21swapper/107:18:461
121750440irq/30-eth0_g0_121ksoftirqd/110:01:201
121750440irq/30-eth0_g0_121ksoftirqd/108:29:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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