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2025-11-23 - 00:24

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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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 Sat Nov 22, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2048621220sleep0121650irq/29-eth0_g0_10:03:240
1211060ksoftirqd/1121750irq/30-eth0_g0_09:18:221
191062880sleep1121750irq/30-eth0_g0_09:56:351
121870ksoftirqd/1121750irq/30-eth0_g0_11:30:081
149942740sleep1121750irq/30-eth0_g0_07:29:261
168652670sleep1121750irq/30-eth0_g0_09:49:031
121560ksoftirqd/1121750irq/30-eth0_g0_08:42:261
121510ksoftirqd/1121750irq/30-eth0_g0_11:01:221
258202500sleep0121750irq/30-eth0_g0_12:35:410
62682490sleep0121650irq/29-eth0_g0_11:16:180
121490ksoftirqd/1121750irq/30-eth0_g0_09:33:451
182112480sleep1121750irq/30-eth0_g0_12:05:061
150162480sleep0121650irq/29-eth0_g0_07:29:400
121480ksoftirqd/1121750irq/30-eth0_g0_09:28:311
121470ksoftirqd/1121650irq/29-eth0_g0_12:34:591
99142460sleep0121650irq/29-eth0_g0_11:30:530
121750460irq/30-eth0_g0_1219-21kworker/1:211:26:511
121450ksoftirqd/1121750irq/30-eth0_g0_11:10:301
121450ksoftirqd/1121750irq/30-eth0_g0_11:10:301
121450ksoftirqd/1121750irq/30-eth0_g0_10:35:471
121450ksoftirqd/1121650irq/29-eth0_g0_09:35:121
121450ksoftirqd/1121650irq/29-eth0_g0_08:56:071
121450ksoftirqd/1121650irq/29-eth0_g0_08:49:551
121450ksoftirqd/1121650irq/29-eth0_g0_08:10:011
121450ksoftirqd/1121650irq/29-eth0_g0_08:07:031
121750440irq/30-eth0_g0_121ksoftirqd/111:50:061
121440ksoftirqd/1126752chrt07:20:000
121440ksoftirqd/1121650irq/29-eth0_g0_12:32:081
121440ksoftirqd/1121650irq/29-eth0_g0_07:05:081
121650430irq/29-eth0_g0_121ksoftirqd/109:27:230
121430ksoftirqd/1121750irq/30-eth0_g0_11:59:491
121430ksoftirqd/1121750irq/30-eth0_g0_11:59:491
121430ksoftirqd/1121750irq/30-eth0_g0_11:47:100
121430ksoftirqd/1121750irq/30-eth0_g0_10:17:080
121750420irq/30-eth0_g0_1219-21kworker/1:210:00:481
121750420irq/30-eth0_g0_121ksoftirqd/111:55:031
121750420irq/30-eth0_g0_121ksoftirqd/111:55:031
121650420irq/29-eth0_g0_31ksoftirqd/012:11:020
121420ksoftirqd/1121750irq/30-eth0_g0_11:42:021
121420ksoftirqd/1121750irq/30-eth0_g0_11:34:510
121750410irq/30-eth0_g0_1219-21kworker/1:212:20:371
121650410irq/29-eth0_g0_31ksoftirqd/012:04:590
121650410irq/29-eth0_g0_20827-21unixbench_singl12:15:080
121650410irq/29-eth0_g0_1894-21runrttasks07:07:360
121650410irq/29-eth0_g0_1714-21unixbench_multi08:45:070
121650410irq/29-eth0_g0_16858-21ntp_offset12:00:040
121650410irq/29-eth0_g0_16858-21ntp_offset12:00:040
121650410irq/29-eth0_g0_13-21kworker/0:110:12:010
121410ksoftirqd/1121750irq/30-eth0_g0_09:10:200
121410ksoftirqd/1121650irq/29-eth0_g0_10:56:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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