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2026-06-01 - 20:21

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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Click here to display the system's profile data or here to proceed to next system.
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 Mon Jun 01, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34321550sleep1121650irq/29-eth0_g0_09:42:451
322422760chrt121750irq/30-eth0_g0_11:52:010
156782750sleep1121750irq/30-eth0_g0_08:33:211
249142700sleep1121750irq/30-eth0_g0_09:09:561
89992690sleep0121650irq/29-eth0_g0_10:17:550
139172670sleep0121750irq/30-eth0_g0_10:38:010
259592620sleep0121750irq/30-eth0_g0_11:25:210
3422520sleep0121650irq/29-eth0_g0_09:42:440
121520ksoftirqd/1121750irq/30-eth0_g0_12:00:031
27343995114cyclictest1073-21proc_pri09:44:561
64632500sleep1121750irq/30-eth0_g0_07:54:551
2734399498cyclictest637-21sendmail_mailqu11:54:581
121650480irq/29-eth0_g0_26859-21unixbench_multi07:04:590
121480ksoftirqd/1121750irq/30-eth0_g0_10:53:591
121480ksoftirqd/1121750irq/30-eth0_g0_09:16:181
27343994724cyclictest11680-21unixbench_singl08:15:001
200012470sleep0121650irq/29-eth0_g0_11:02:260
121650470irq/29-eth0_g0_2734399cyclictest10:57:491
27343994619cyclictest14816-21unixbench_singl10:39:581
27343994617cyclictest0-21swapper/110:18:291
2734399461cyclictest71572sleep110:09:511
2734399461cyclictest124062sleep110:30:001
2734399461cyclictest124062sleep110:30:001
2734399461cyclictest1219-21kworker/1:207:49:491
121750460irq/30-eth0_g0_2734399cyclictest09:34:371
27343994525cyclictest0-21swapper/107:19:381
2734399452cyclictest9406-21taskset10:19:501
2734399452cyclictest8640-21munin-run12:29:381
2734399451cyclictest29509-21unixbench_multi11:39:581
2734399451cyclictest21326-21sendmail_mailqu08:54:581
121750450irq/30-eth0_g0_2734399cyclictest11:05:371
2734399444cyclictest19398-21runrttasks08:48:491
2734399443cyclictest9529-21runrttasks08:08:121
2734399443cyclictest32500-21runrttasks07:29:501
2734399443cyclictest277172sleep107:09:531
2734399443cyclictest10615-21unixbench_multi12:34:581
27343994420cyclictest5746-21grep12:14:581
2734399442cyclictest27873-21runrttasks09:22:221
2734399442cyclictest10388-21unixbench_multi08:09:581
27343994419cyclictest7352-21runrttasks07:59:481
27343994419cyclictest7352-21runrttasks07:59:481
2734399441cyclictest9820-21runrttasks12:34:061
2734399441cyclictest6185-21grep10:04:581
2734399441cyclictest4990-21latency_hist12:14:381
2734399441cyclictest16544-21grep08:34:591
121750440irq/30-eth0_g0_2734399cyclictest10:02:231
2734399434cyclictest3258-21runrttasks07:41:381
27343994324cyclictest12667-21proc_pri08:19:571
2734399432cyclictest31392-21/usr/sbin/munin11:49:481
2734399432cyclictest24384-21diskmemload11:19:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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