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2025-07-02 - 07:05

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Wed Jul 02, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193021310sleep12288650irq/29-eth0_g0_21:59:461
1211120ksoftirqd/12288750irq/30-eth0_g0_21:28:281
1211040ksoftirqd/12288750irq/30-eth0_g0_21:13:261
119702830sleep02288650irq/29-eth0_g0_22:42:180
35502690sleep02288750irq/30-eth0_g0_22:08:120
80112590sleep02288650irq/29-eth0_g0_22:24:000
4102520sleep02288750irq/30-eth0_g0_00:08:010
121520ksoftirqd/12288750irq/30-eth0_g0_00:23:170
282922480sleep12288650irq/29-eth0_g0_21:35:241
2288650480irq/29-eth0_g0_470-21kworker/1:100:06:081
121470ksoftirqd/12288750irq/30-eth0_g0_21:58:510
121470ksoftirqd/12288650irq/29-eth0_g0_22:05:161
121470ksoftirqd/12288650irq/29-eth0_g0_21:46:341
121460ksoftirqd/12288750irq/30-eth0_g0_22:06:390
121460ksoftirqd/12288650irq/29-eth0_g0_23:24:581
121460ksoftirqd/12288650irq/29-eth0_g0_22:49:091
121450ksoftirqd/12288650irq/29-eth0_g0_20:50:051
121450ksoftirqd/12288650irq/29-eth0_g0_00:31:161
121440ksoftirqd/12288750irq/30-eth0_g0_21:48:260
121440ksoftirqd/12288650irq/29-eth0_g0_22:38:561
121440ksoftirqd/12288650irq/29-eth0_g0_22:24:391
121440ksoftirqd/12288650irq/29-eth0_g0_21:38:531
2288650430irq/29-eth0_g0_470-21kworker/1:100:18:371
2288650430irq/29-eth0_g0_293012sleep123:53:151
121430ksoftirqd/12288650irq/29-eth0_g0_21:25:571
278772420sleep02288750irq/30-eth0_g0_23:46:520
121420ksoftirqd/12288750irq/30-eth0_g0_21:50:351
121420ksoftirqd/12288750irq/30-eth0_g0_00:34:291
121420ksoftirqd/12288650irq/29-eth0_g0_23:38:291
121420ksoftirqd/12288650irq/29-eth0_g0_22:18:351
121420ksoftirqd/12288650irq/29-eth0_g0_19:58:241
2288750410irq/30-eth0_g0_4554-21proc_pri19:58:260
2288750410irq/30-eth0_g0_31ksoftirqd/022:13:540
2288750410irq/30-eth0_g0_16918-21timerandwakeup20:48:240
2288650410irq/29-eth0_g0_470-21kworker/1:122:37:171
2288650410irq/29-eth0_g0_24863-21latency_hist21:23:051
2288650410irq/29-eth0_g0_21164-21diskmemload23:59:031
2288650410irq/29-eth0_g0_121ksoftirqd/100:24:411
2288650410irq/29-eth0_g0_0-21swapper/123:18:041
121410ksoftirqd/12288650irq/29-eth0_g0_23:04:480
2288750400irq/30-eth0_g0_7146-21taskset00:33:250
2288750400irq/30-eth0_g0_30907-21awk23:58:220
2288750400irq/30-eth0_g0_31ksoftirqd/023:27:170
2288750400irq/30-eth0_g0_31ksoftirqd/023:20:160
2288750400irq/30-eth0_g0_24314-21cat23:33:040
2288750400irq/30-eth0_g0_24314-21cat23:33:040
2288750400irq/30-eth0_g0_22885-21kworker/0:223:48:330
2288750400irq/30-eth0_g0_22885-21kworker/0:223:36:410
2288750400irq/30-eth0_g0_22885-21kworker/0:222:51:280
2288750400irq/30-eth0_g0_22885-21kworker/0:222:46:330
2288750400irq/30-eth0_g0_22885-21kworker/0:222:29:300
2288750400irq/30-eth0_g0_22885-21kworker/0:221:46:260
2288750400irq/30-eth0_g0_18951-21grep23:08:280
2288750400irq/30-eth0_g0_121ksoftirqd/121:29:470
2288650400irq/29-eth0_g0_2021-21runrttasks19:03:161
2288650400irq/29-eth0_g0_0-21swapper/122:44:281
121400ksoftirqd/12288750irq/30-eth0_g0_22:59:100
121400ksoftirqd/12288650irq/29-eth0_g0_21:16:060
121400ksoftirqd/12288650irq/29-eth0_g0_20:38:221
121400ksoftirqd/12288650irq/29-eth0_g0_00:08:131
2288750390irq/30-eth0_g0_24092-21awk21:18:220
2288750390irq/30-eth0_g0_22885-21kworker/0:223:55:340
2288750390irq/30-eth0_g0_22885-21kworker/0:223:39:280
2288750390irq/30-eth0_g0_22885-21kworker/0:223:13:380
2288750390irq/30-eth0_g0_22885-21kworker/0:221:26:280
2288750390irq/30-eth0_g0_22885-21kworker/0:221:12:460
2288750390irq/30-eth0_g0_22885-21kworker/0:200:13:260
2288750390irq/30-eth0_g0_22885-21kworker/0:200:08:240
2288750390irq/30-eth0_g0_1562-21sort19:48:050
2288650390irq/29-eth0_g0_470-21kworker/1:123:22:051
2288650390irq/29-eth0_g0_470-21kworker/1:123:13:041
2288650390irq/29-eth0_g0_470-21kworker/1:121:56:201
2288650390irq/29-eth0_g0_23978-21runrttasks19:06:110
2288650390irq/29-eth0_g0_105892sleep120:23:231
2288650390irq/29-eth0_g0_0-21swapper/123:49:031
2288750380irq/30-eth0_g0_6932-21grep20:08:230
2288750380irq/30-eth0_g0_28999-21ntpdc21:38:220
2288750380irq/30-eth0_g0_22885-21kworker/0:221:53:180
2288750380irq/30-eth0_g0_22885-21kworker/0:221:34:050
2288750380irq/30-eth0_g0_121ksoftirqd/119:18:041
2288750380irq/30-eth0_g0_10524-21sort20:23:220
2288650380irq/29-eth0_g0_470-21kworker/1:123:30:491
2288650380irq/29-eth0_g0_470-21kworker/1:123:30:491
2288650380irq/29-eth0_g0_121ksoftirqd/122:16:441
121380ksoftirqd/12288650irq/29-eth0_g0_23:47:501
121380ksoftirqd/12288650irq/29-eth0_g0_19:38:051
32822370sleep03283-21open_files19:53:250
2288750370irq/30-eth0_g0_31ksoftirqd/000:32:590
2288750370irq/30-eth0_g0_22885-21kworker/0:222:53:420
2288750370irq/30-eth0_g0_22885-21kworker/0:222:33:270
2288750370irq/30-eth0_g0_22885-21kworker/0:222:20:000
2288750370irq/30-eth0_g0_22885-21kworker/0:200:21:240
2288650370irq/29-eth0_g0_8163-21ntp_states20:13:221
2288650370irq/29-eth0_g0_8163-21ntp_states20:13:221
2288650370irq/29-eth0_g0_470-21kworker/1:122:56:271
2288650370irq/29-eth0_g0_470-21kworker/1:122:11:451
2288650370irq/29-eth0_g0_2331-21awk00:13:251
2288650370irq/29-eth0_g0_21787-21seq21:08:261
2288650370irq/29-eth0_g0_15752-21grep20:43:261
2288650370irq/29-eth0_g0_121ksoftirqd/123:03:571
2288650370irq/29-eth0_g0_1069-21unixbench_singl19:43:281
121370ksoftirqd/12288650irq/29-eth0_g0_23:00:531
121370ksoftirqd/12288650irq/29-eth0_g0_20:58:221
2288750360irq/30-eth0_g0_31ksoftirqd/019:48:220
2288750360irq/30-eth0_g0_2021-21runrttasks21:04:240
2288750360irq/30-eth0_g0_18719-21sort20:58:050
2288650360irq/29-eth0_g0_470-21kworker/1:122:29:411
2288650360irq/29-eth0_g0_12133-21unixbench_singl20:28:281
2288650350irq/29-eth0_g0_9689-21unixbench_singl20:18:261
2288650350irq/29-eth0_g0_9689-21unixbench_singl20:18:261
2288650350irq/29-eth0_g0_6034-21vmstat20:03:281
2288650350irq/29-eth0_g0_28556-21tail19:23:271
121350ksoftirqd/12288650irq/29-eth0_g0_23:33:201
121350ksoftirqd/12288650irq/29-eth0_g0_20:11:011
121350ksoftirqd/12288650irq/29-eth0_g0_19:38:231
2288750340irq/30-eth0_g0_2021-21runrttasks20:31:380
2288750340irq/30-eth0_g0_2021-21runrttasks20:13:090
2288750340irq/30-eth0_g0_2021-21runrttasks20:13:090
2288750340irq/30-eth0_g0_2021-21runrttasks19:43:000
2288750340irq/30-eth0_g0_2021-21runrttasks19:20:100
2288750340irq/30-eth0_g0_2021-21runrttasks19:17:590
2288650340irq/29-eth0_g0_3462-21timerandwakeup19:53:271
2288650340irq/29-eth0_g0_29303-21df_inode19:28:191
2288650340irq/29-eth0_g0_20678-21unixbench_multi21:03:261
2288650340irq/29-eth0_g0_13133-21wc20:33:261
2288650340irq/29-eth0_g0_0-21swapper/119:48:191
2288650340irq/29-eth0_g0_0-21swapper/119:18:201
2288750330irq/30-eth0_g0_30509-21df_abs19:33:180
2288750330irq/30-eth0_g0_24512-21latency19:08:210
2288750330irq/30-eth0_g0_2021-21runrttasks20:42:460
2288750330irq/30-eth0_g0_2021-21runrttasks20:06:280
2288750330irq/30-eth0_g0_19029-21/usr/sbin/munin20:58:190
2288750330irq/30-eth0_g0_13344-21sed20:33:290
2288650330irq/29-eth0_g0_2021-21runrttasks19:28:170
2288650330irq/29-eth0_g0_0-21swapper/120:58:051
2288650330irq/29-eth0_g0_0-21swapper/119:08:261
2288750320irq/30-eth0_g0_2021-21runrttasks19:25:440
2288750310irq/30-eth0_g0_9388-21ntp_states20:18:220
2288750310irq/30-eth0_g0_9388-21ntp_states20:18:220
2288750300irq/30-eth0_g0_15296-21forks20:43:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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