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2026-05-15 - 18:09

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 highest latencies:
System rack3slot5s.osadl.org (updated Fri May 15, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
42521600sleep1121450irq/29-eth0_g0_11:08:361
260732680sleep1121550irq/30-eth0_g0_10:01:201
121650ksoftirqd/1121550irq/30-eth0_g0_07:33:350
121620ksoftirqd/1121550irq/30-eth0_g0_07:47:451
121500ksoftirqd/1121550irq/30-eth0_g0_11:38:161
121490ksoftirqd/1121550irq/30-eth0_g0_10:36:291
82392480sleep0121550irq/30-eth0_g0_12:24:160
121460ksoftirqd/1121550irq/30-eth0_g0_10:16:520
121550450irq/30-eth0_g0_1221-21kworker/1:212:17:371
121440ksoftirqd/1121550irq/30-eth0_g0_12:03:450
121440ksoftirqd/1121450irq/29-eth0_g0_08:53:521
6412430sleep1121550irq/30-eth0_g0_11:10:071
121550430irq/30-eth0_g0_1221-21kworker/1:212:12:441
121550430irq/30-eth0_g0_1221-21kworker/1:210:52:541
121550430irq/30-eth0_g0_1221-21kworker/1:210:52:541
121550430irq/30-eth0_g0_121ksoftirqd/110:56:071
121430ksoftirqd/1121450irq/29-eth0_g0_12:30:071
121430ksoftirqd/1121450irq/29-eth0_g0_09:11:541
121550420irq/30-eth0_g0_1221-21kworker/1:212:28:021
121550420irq/30-eth0_g0_1221-21kworker/1:211:50:181
121550420irq/30-eth0_g0_1221-21kworker/1:211:45:121
121550420irq/30-eth0_g0_1221-21kworker/1:211:42:261
121450420irq/29-eth0_g0_13-21kworker/0:111:05:040
321552410sleep1121550irq/30-eth0_g0_11:01:011
121550410irq/30-eth0_g0_1221-21kworker/1:212:23:071
121550410irq/30-eth0_g0_1221-21kworker/1:209:51:451
121550410irq/30-eth0_g0_1221-21kworker/1:209:51:451
121450410irq/29-eth0_g0_13-21kworker/0:111:25:170
121450410irq/29-eth0_g0_0-21swapper/007:04:210
121550400irq/30-eth0_g0_1221-21kworker/1:210:45:231
121550400irq/30-eth0_g0_1221-21kworker/1:210:13:051
121550400irq/30-eth0_g0_1221-21kworker/1:210:06:051
121550400irq/30-eth0_g0_1221-21kworker/1:209:36:111
121550400irq/30-eth0_g0_121ksoftirqd/111:29:321
121550400irq/30-eth0_g0_121ksoftirqd/109:58:381
121550400irq/30-eth0_g0_121ksoftirqd/109:41:521
121550400irq/30-eth0_g0_0-21swapper/110:15:211
121450400irq/29-eth0_g0_4067-21latency_hist11:43:530
121450400irq/29-eth0_g0_13-21kworker/0:112:11:590
121450400irq/29-eth0_g0_13-21kworker/0:111:14:370
121450400irq/29-eth0_g0_13-21kworker/0:110:55:490
121450400irq/29-eth0_g0_13-21kworker/0:110:07:290
121450400irq/29-eth0_g0_13-21kworker/0:109:52:230
121450400irq/29-eth0_g0_13-21kworker/0:109:52:230
121450400irq/29-eth0_g0_13-21kworker/0:109:16:030
121450400irq/29-eth0_g0_0-21swapper/012:08:040
8468993925cyclictest1966-21snmpd11:21:391
121550390irq/30-eth0_g0_13-21kworker/0:111:54:510
121550390irq/30-eth0_g0_1221-21kworker/1:212:38:351
121550390irq/30-eth0_g0_1221-21kworker/1:212:38:351
121550390irq/30-eth0_g0_1221-21kworker/1:210:29:381
121550390irq/30-eth0_g0_121ksoftirqd/111:25:341
121550390irq/30-eth0_g0_121ksoftirqd/109:15:301
121450390irq/29-eth0_g0_1911-21runrttasks11:49:060
121450390irq/29-eth0_g0_1911-21runrttasks10:24:530
121450390irq/29-eth0_g0_1911-21runrttasks08:56:420
121450390irq/29-eth0_g0_13-21kworker/0:112:30:270
121450390irq/29-eth0_g0_13-21kworker/0:111:44:500
121450390irq/29-eth0_g0_13-21kworker/0:111:37:340
121450390irq/29-eth0_g0_13-21kworker/0:111:29:220
121450390irq/29-eth0_g0_13-21kworker/0:111:02:080
121450390irq/29-eth0_g0_13-21kworker/0:110:41:160
121450390irq/29-eth0_g0_13-21kworker/0:109:35:300
121450390irq/29-eth0_g0_13-21kworker/0:109:32:240
121450390irq/29-eth0_g0_13-21kworker/0:109:25:480
8468993826cyclictest1972-21lldpd09:26:071
121550380irq/30-eth0_g0_29635-21taskset10:36:190
121550380irq/30-eth0_g0_1221-21kworker/1:211:16:441
121550380irq/30-eth0_g0_121ksoftirqd/112:08:191
121550380irq/30-eth0_g0_121ksoftirqd/111:59:121
121550380irq/30-eth0_g0_121ksoftirqd/109:44:291
121550380irq/30-eth0_g0_121ksoftirqd/109:19:521
121450380irq/29-eth0_g0_25359-21taskset09:53:560
121450380irq/29-eth0_g0_1911-21runrttasks10:30:510
121450380irq/29-eth0_g0_1911-21runrttasks09:13:460
121450380irq/29-eth0_g0_1911-21runrttasks07:54:270
121450380irq/29-eth0_g0_1911-21runrttasks07:54:270
121450380irq/29-eth0_g0_13-21kworker/0:112:37:380
121450380irq/29-eth0_g0_13-21kworker/0:112:37:380
121450380irq/29-eth0_g0_13-21kworker/0:112:16:070
121450380irq/29-eth0_g0_121ksoftirqd/111:57:391
121450380irq/29-eth0_g0_0-21swapper/009:41:320
8468993725cyclictest0-21swapper/108:46:121
8468993725cyclictest0-21swapper/108:26:341
8468993725cyclictest0-21swapper/108:14:041
121550370irq/30-eth0_g0_1221-21kworker/1:210:39:581
121550370irq/30-eth0_g0_1221-21kworker/1:210:18:551
121550370irq/30-eth0_g0_1221-21kworker/1:209:30:011
121450370irq/29-eth0_g0_8410-21runrttasks07:08:211
121450370irq/29-eth0_g0_1911-21runrttasks10:01:230
121450370irq/29-eth0_g0_1911-21runrttasks08:19:240
121450370irq/29-eth0_g0_1911-21runrttasks07:22:120
121450370irq/29-eth0_g0_13-21kworker/0:110:45:430
121450370irq/29-eth0_g0_13-21kworker/0:110:20:420
121450370irq/29-eth0_g0_13-21kworker/0:109:46:440
121450370irq/29-eth0_g0_0-21swapper/009:23:450
8468993624cyclictest0-21swapper/108:36:531
8468993624cyclictest0-21swapper/108:36:531
121550360irq/30-eth0_g0_7771-21runrttasks12:19:440
121550360irq/30-eth0_g0_1221-21kworker/1:210:26:041
121450360irq/29-eth0_g0_1911-21runrttasks10:09:480
121450360irq/29-eth0_g0_1911-21runrttasks08:49:370
121450360irq/29-eth0_g0_1911-21runrttasks08:39:360
121450360irq/29-eth0_g0_1911-21runrttasks08:16:560
121450360irq/29-eth0_g0_1911-21runrttasks07:53:380
121450360irq/29-eth0_g0_1911-21runrttasks07:53:380
121450360irq/29-eth0_g0_1911-21runrttasks07:37:540
121450360irq/29-eth0_g0_1911-21runrttasks07:09:440
121450350irq/29-eth0_g0_1911-21runrttasks11:22:000
121450350irq/29-eth0_g0_1911-21runrttasks09:03:590
121450350irq/29-eth0_g0_1911-21runrttasks08:26:020
121450350irq/29-eth0_g0_1911-21runrttasks07:46:350
121450350irq/29-eth0_g0_1911-21runrttasks07:27:480
121450350irq/29-eth0_g0_1911-21runrttasks07:18:240
121450350irq/29-eth0_g0_13-21kworker/0:111:11:470
8468993428cyclictest11151-21sshd07:34:351
8468993423cyclictest0-21swapper/107:19:561
121450340irq/29-eth0_g0_1911-21runrttasks07:42:440
121450340irq/29-eth0_g0_0-21swapper/010:50:260
121450340irq/29-eth0_g0_0-21swapper/010:50:260
121450330irq/29-eth0_g0_1972-21lldpd08:34:350
121450330irq/29-eth0_g0_1972-21lldpd08:34:350
121450330irq/29-eth0_g0_1911-21runrttasks08:59:110
121450330irq/29-eth0_g0_1911-21runrttasks08:11:070
121450330irq/29-eth0_g0_1911-21runrttasks08:07:300
121450330irq/29-eth0_g0_1911-21runrttasks07:58:580
121450330irq/29-eth0_g0_1911-21runrttasks07:58:580
121450320irq/29-eth0_g0_1911-21runrttasks08:45:490
121450320irq/29-eth0_g0_1911-21runrttasks08:33:050
121450320irq/29-eth0_g0_1911-21runrttasks08:33:050
121450320irq/29-eth0_g0_17717-21runrttasks08:38:551
121450320irq/29-eth0_g0_0-21swapper/108:29:351
121450320irq/29-eth0_g0_0-21swapper/108:29:351
8468993126cyclictest20186-21/usr/sbin/munin09:03:521
8468993125cyclictest12827-21runrttasks07:51:201
8468993125cyclictest12827-21runrttasks07:51:201
8468993123cyclictest14763-21runrttasks08:10:071
8468993122cyclictest10667-21runrttasks07:29:531
121310ksoftirqd/1121450irq/29-eth0_g0_08:56:071
121310ksoftirqd/1121450irq/29-eth0_g0_07:27:231
8468993024cyclictest13252-21runrttasks07:55:211
8468993024cyclictest13252-21runrttasks07:55:211
8468993021cyclictest20329-21runrttasks09:04:391
121450300irq/29-eth0_g0_14151-21runrttasks08:03:561
121450300irq/29-eth0_g0_13863-21runrttasks08:01:321
121450300irq/29-eth0_g0_13863-21runrttasks08:01:321
121450300irq/29-eth0_g0_12020-21runrttasks07:43:461
8468992923cyclictest9496-21ls07:18:531
121450290irq/29-eth0_g0_15824-21runrttasks08:20:361
8468992823cyclictest8965-21runrttasks07:13:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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