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2025-05-23 - 10:32

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 Fri May 23, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3159621210sleep12288650irq/29-eth0_g0_22:53:311
145292810chrt2288750irq/30-eth0_g0_21:44:381
121710ksoftirqd/12288750irq/30-eth0_g0_00:10:041
104952600sleep12288650irq/29-eth0_g0_21:25:321
121590ksoftirqd/12288750irq/30-eth0_g0_23:06:060
211522530sleep12288650irq/29-eth0_g0_00:22:231
211522530sleep12288650irq/29-eth0_g0_00:22:231
121520ksoftirqd/12288650irq/29-eth0_g0_00:37:051
121520ksoftirqd/1164212sleep000:04:230
271182510sleep12288650irq/29-eth0_g0_20:22:271
151662500sleep12288650irq/29-eth0_g0_23:59:011
121490ksoftirqd/12288650irq/29-eth0_g0_23:40:541
121470ksoftirqd/12288650irq/29-eth0_g0_19:42:341
121470ksoftirqd/12288650irq/29-eth0_g0_00:09:391
121460ksoftirqd/12288650irq/29-eth0_g0_21:54:271
121450ksoftirqd/12288750irq/30-eth0_g0_23:14:561
121450ksoftirqd/12288750irq/30-eth0_g0_21:14:520
121450ksoftirqd/12288650irq/29-eth0_g0_23:30:401
121450ksoftirqd/12288650irq/29-eth0_g0_23:07:361
121450ksoftirqd/12288650irq/29-eth0_g0_22:44:561
121440ksoftirqd/12288750irq/30-eth0_g0_22:12:270
121440ksoftirqd/12288750irq/30-eth0_g0_00:04:560
121440ksoftirqd/12288650irq/29-eth0_g0_23:24:591
121430ksoftirqd/12288750irq/30-eth0_g0_22:35:120
121430ksoftirqd/12288650irq/29-eth0_g0_23:46:071
2288750420irq/30-eth0_g0_22885-21kworker/0:223:24:250
2288750420irq/30-eth0_g0_22885-21kworker/0:200:36:070
2288750420irq/30-eth0_g0_121ksoftirqd/121:19:550
2288750420irq/30-eth0_g0_10227-21seq23:38:370
121420ksoftirqd/12288750irq/30-eth0_g0_22:58:171
121420ksoftirqd/12288750irq/30-eth0_g0_21:50:550
2288750410irq/30-eth0_g0_27542-21seq20:24:540
2288750410irq/30-eth0_g0_2021-21runrttasks19:04:570
121410ksoftirqd/12288750irq/30-eth0_g0_21:37:590
2288750400irq/30-eth0_g0_22885-21kworker/0:223:48:560
2288750400irq/30-eth0_g0_22885-21kworker/0:222:42:340
2288750400irq/30-eth0_g0_22885-21kworker/0:200:15:010
2288750400irq/30-eth0_g0_22885-21kworker/0:200:15:010
2288750400irq/30-eth0_g0_14628-21sendmail_mailqu23:55:020
2288750400irq/30-eth0_g0_11480-21sshd23:43:560
2288650400irq/29-eth0_g0_121ksoftirqd/121:10:070
121400ksoftirqd/12288650irq/29-eth0_g0_22:27:551
121400ksoftirqd/12288650irq/29-eth0_g0_20:00:361
2288750390irq/30-eth0_g0_22885-21kworker/0:223:12:290
2288750390irq/30-eth0_g0_22885-21kworker/0:222:49:560
2288750390irq/30-eth0_g0_22885-21kworker/0:222:33:200
2288750390irq/30-eth0_g0_22885-21kworker/0:221:42:420
2288750390irq/30-eth0_g0_21443-21forks19:59:520
2288650390irq/29-eth0_g0_8699-21runrttasks19:07:241
2288650390irq/29-eth0_g0_470-21kworker/1:123:20:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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