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2025-12-18 - 23:03

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Thu Dec 18, 2025 01:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211080ksoftirqd/1121550irq/30-eth0_g0_20:34:511
1211070ksoftirqd/1121550irq/30-eth0_g0_21:57:161
121860ksoftirqd/1121450irq/29-eth0_g0_20:26:490
121830ksoftirqd/1121550irq/30-eth0_g0_19:41:531
121820ksoftirqd/1121550irq/30-eth0_g0_19:24:241
121810ksoftirqd/1121450irq/29-eth0_g0_19:47:360
121750ksoftirqd/1121550irq/30-eth0_g0_19:46:501
121700ksoftirqd/1121450irq/29-eth0_g0_19:37:381
239142650sleep1121550irq/30-eth0_g0_23:54:151
121550ksoftirqd/1121550irq/30-eth0_g0_21:43:251
121540ksoftirqd/1121550irq/30-eth0_g0_22:54:331
121520ksoftirqd/1121550irq/30-eth0_g0_23:39:501
165912500sleep0121450irq/29-eth0_g0_23:24:260
313652490sleep0121450irq/29-eth0_g0_19:59:510
313652490sleep0121450irq/29-eth0_g0_19:59:510
121480ksoftirqd/1121550irq/30-eth0_g0_22:22:210
121480ksoftirqd/1121550irq/30-eth0_g0_22:20:051
121470ksoftirqd/1121550irq/30-eth0_g0_23:40:491
121460ksoftirqd/1121550irq/30-eth0_g0_23:58:001
121460ksoftirqd/1121550irq/30-eth0_g0_22:44:161
121460ksoftirqd/1121550irq/30-eth0_g0_22:29:001
121450ksoftirqd/1121450irq/29-eth0_g0_21:46:580
177492440sleep1121550irq/30-eth0_g0_23:28:401
121450440irq/29-eth0_g0_31ksoftirqd/022:57:370
121450440irq/29-eth0_g0_31ksoftirqd/022:57:370
121440ksoftirqd/1121550irq/30-eth0_g0_21:54:020
121440ksoftirqd/1121450irq/29-eth0_g0_21:12:371
121550430irq/30-eth0_g0_1221-21kworker/1:221:51:401
121430ksoftirqd/1121550irq/30-eth0_g0_00:24:200
121430ksoftirqd/1121450irq/29-eth0_g0_22:47:251
121550420irq/30-eth0_g0_1221-21kworker/1:222:30:301
121450420irq/29-eth0_g0_31ksoftirqd/000:13:250
121450420irq/29-eth0_g0_13-21kworker/0:121:12:400
121420ksoftirqd/1121450irq/29-eth0_g0_23:32:221
121550410irq/30-eth0_g0_18609-21ps19:07:321
121550410irq/30-eth0_g0_121ksoftirqd/121:16:101
121450410irq/29-eth0_g0_31227-21/usr/sbin/munin22:12:310
121450410irq/29-eth0_g0_23951-21memory21:42:310
121450410irq/29-eth0_g0_2071-21snmpd22:04:250
121450410irq/29-eth0_g0_13-21kworker/0:100:09:500
121450410irq/29-eth0_g0_13-21kworker/0:100:09:500
121450410irq/29-eth0_g0_121ksoftirqd/123:38:190
121410ksoftirqd/1121450irq/29-eth0_g0_20:26:251
1908999402cyclictest25203-21taskset19:34:501
1908999402cyclictest19228-21grep21:22:361
121550400irq/30-eth0_g0_14868-21ntp_offset23:17:321
121550400irq/30-eth0_g0_1221-21kworker/1:221:28:021
121450400irq/29-eth0_g0_31ksoftirqd/021:27:510
121450400irq/29-eth0_g0_31ksoftirqd/020:37:300
121450400irq/29-eth0_g0_1941-21runrttasks19:06:210
121450400irq/29-eth0_g0_13-21kworker/0:122:09:400
121450400irq/29-eth0_g0_121ksoftirqd/122:41:240
121450400irq/29-eth0_g0_121ksoftirqd/100:18:010
121450400irq/29-eth0_g0_121ksoftirqd/100:18:010
121550390irq/30-eth0_g0_31ksoftirqd/021:33:070
121550390irq/30-eth0_g0_31ksoftirqd/021:33:070
121550390irq/30-eth0_g0_1221-21kworker/1:222:17:291
121550390irq/30-eth0_g0_1221-21kworker/1:221:59:581
121550390irq/30-eth0_g0_1221-21kworker/1:200:24:131
121550390irq/30-eth0_g0_121ksoftirqd/100:34:511
121550390irq/30-eth0_g0_121ksoftirqd/100:06:091
121550390irq/30-eth0_g0_121ksoftirqd/100:06:091
121450390irq/29-eth0_g0_24259-21/usr/sbin/munin23:57:270
121450390irq/29-eth0_g0_2213-21runrttasks22:27:040
121450390irq/29-eth0_g0_1941-21runrttasks21:15:380
121450390irq/29-eth0_g0_1621-21/usr/sbin/munin20:12:320
121450390irq/29-eth0_g0_13-21kworker/0:123:33:280
121450390irq/29-eth0_g0_13-21kworker/0:123:02:350
121450390irq/29-eth0_g0_13-21kworker/0:122:50:300
121450390irq/29-eth0_g0_13-21kworker/0:122:17:320
121450390irq/29-eth0_g0_121ksoftirqd/122:13:221
121450390irq/29-eth0_g0_121ksoftirqd/121:39:381
121450390irq/29-eth0_g0_121ksoftirqd/121:39:381
121450390irq/29-eth0_g0_10723-21rt-features20:47:340
121390ksoftirqd/1121550irq/30-eth0_g0_19:21:040
121390ksoftirqd/1121550irq/30-eth0_g0_00:36:420
121550380irq/30-eth0_g0_1221-21kworker/1:222:08:481
121550380irq/30-eth0_g0_1221-21kworker/1:200:19:271
121550380irq/30-eth0_g0_1221-21kworker/1:200:19:271
121550380irq/30-eth0_g0_0-21swapper/123:20:031
121550380irq/30-eth0_g0_0-21swapper/123:12:171
121550380irq/30-eth0_g0_0-21swapper/123:12:171
121550380irq/30-eth0_g0_0-21swapper/123:08:581
121550380irq/30-eth0_g0_0-21swapper/100:03:011
121450380irq/29-eth0_g0_748-21awk20:07:320
121450380irq/29-eth0_g0_31ksoftirqd/021:21:010
121450380irq/29-eth0_g0_29464-21missed_timers19:52:310
121450380irq/29-eth0_g0_20986-21awk23:42:330
121450380irq/29-eth0_g0_1941-21runrttasks21:00:180
121450380irq/29-eth0_g0_1941-21runrttasks20:16:000
121450380irq/29-eth0_g0_1941-21runrttasks19:38:440
121450380irq/29-eth0_g0_1908899cyclictest22:47:110
121450380irq/29-eth0_g0_13-21kworker/0:123:27:320
121450380irq/29-eth0_g0_13-21kworker/0:122:35:360
121450380irq/29-eth0_g0_13-21kworker/0:121:35:040
121450380irq/29-eth0_g0_13-21kworker/0:121:35:040
121450380irq/29-eth0_g0_13-21kworker/0:100:24:590
121450380irq/29-eth0_g0_121ksoftirqd/123:05:470
1908999372cyclictest32197-21timerandwakeup20:02:391
1908999372cyclictest32197-21timerandwakeup20:02:391
1908999372cyclictest13934-21df21:02:281
1908999371cyclictest21149-21sendmail_mailqu19:17:371
121550370irq/30-eth0_g0_20138-21taskset19:12:501
121550370irq/30-eth0_g0_1221-21kworker/1:223:01:201
121550370irq/30-eth0_g0_1221-21kworker/1:200:34:001
121550370irq/30-eth0_g0_121ksoftirqd/123:49:221
121550370irq/30-eth0_g0_121ksoftirqd/122:37:151
121450370irq/29-eth0_g0_89452sleep020:42:070
121450370irq/29-eth0_g0_1941-21runrttasks23:46:050
121450370irq/29-eth0_g0_1941-21runrttasks23:10:190
121450370irq/29-eth0_g0_1941-21runrttasks23:10:190
121450370irq/29-eth0_g0_1941-21runrttasks20:49:580
121450370irq/29-eth0_g0_1941-21runrttasks20:02:550
121450370irq/29-eth0_g0_1941-21runrttasks20:02:550
121450370irq/29-eth0_g0_1908899cyclictest19:12:410
121450370irq/29-eth0_g0_13-21kworker/0:123:50:290
121450370irq/29-eth0_g0_13-21kworker/0:123:17:280
121450370irq/29-eth0_g0_13-21kworker/0:122:31:280
121450370irq/29-eth0_g0_13-21kworker/0:100:32:480
121450370irq/29-eth0_g0_121ksoftirqd/121:30:091
121450370irq/29-eth0_g0_121ksoftirqd/121:30:091
121370ksoftirqd/1121550irq/30-eth0_g0_21:57:300
121370ksoftirqd/1121550irq/30-eth0_g0_21:48:501
121370ksoftirqd/1121450irq/29-eth0_g0_00:27:151
121370ksoftirqd/1121450irq/29-eth0_g0_00:12:341
1908999362cyclictest1074-21unixbench_singl20:07:381
1908999361cyclictest9900-21taskset20:44:491
1908999361cyclictest8438-21unixbench_singl20:37:371
1908999361cyclictest31031-21unixbench_multi19:57:401
1908999361cyclictest31031-21unixbench_multi19:57:401
1908999361cyclictest29882-21taskset19:52:381
1908999361cyclictest12153-21vmstat20:52:371
121450360irq/29-eth0_g0_7190-21unixbench_multi20:32:380
121450360irq/29-eth0_g0_4618-21sendmail_mailqu20:22:360
121450360irq/29-eth0_g0_1941-21runrttasks21:05:500
121450360irq/29-eth0_g0_1941-21runrttasks19:32:520
121450360irq/29-eth0_g0_13-21kworker/0:100:03:210
121360ksoftirqd/1121450irq/29-eth0_g0_22:57:171
121360ksoftirqd/1121450irq/29-eth0_g0_22:57:171
1908999351cyclictest15526-21taskset21:07:341
1908999351cyclictest13353-21grep20:57:381
1908999351cyclictest0-21swapper/120:23:021
121450350irq/29-eth0_g0_20837-21iostat19:17:300
121450350irq/29-eth0_g0_1941-21runrttasks19:43:250
121450350irq/29-eth0_g0_12648-21/usr/sbin/munin20:57:400
1908999346cyclictest121550irq/30-eth0_g0_20:47:331
1908999341cyclictest3256-21grep20:17:331
1908999341cyclictest239732sleep119:29:501
121450340irq/29-eth0_g0_1941-21runrttasks19:25:520
1908999331cyclictest20332sleep120:12:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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