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2025-12-02 - 03:14

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 Tue Dec 02, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267421240sleep0121750irq/29-eth0_g0_23:21:070
46332970sleep0121850irq/30-eth0_g0_22:07:580
235252920sleep1121850irq/30-eth0_g0_22:54:191
68332910sleep1121750irq/29-eth0_g0_23:31:171
46342910chrt121750irq/29-eth0_g0_22:07:581
216212910sleep1121750irq/29-eth0_g0_00:07:421
121900ksoftirqd/1121850irq/30-eth0_g0_00:14:191
121850ksoftirqd/1303522sleep020:33:150
121850ksoftirqd/1121850irq/30-eth0_g0_23:56:461
192712810sleep1121850irq/30-eth0_g0_22:43:481
209222800sleep1121850irq/30-eth0_g0_20:10:061
87872790sleep1121750irq/29-eth0_g0_19:40:111
121790ksoftirqd/1119752sleep021:06:400
121770ksoftirqd/1121850irq/30-eth0_g0_23:48:071
273542760sleep0121750irq/29-eth0_g0_00:20:560
253982760chrt121750irq/29-eth0_g0_00:16:200
219852760sleep1121850irq/30-eth0_g0_21:30:301
121760ksoftirqd/172732sleep020:55:120
119742760sleep1121750irq/29-eth0_g0_21:06:401
277022750sleep1121850irq/30-eth0_g0_00:22:181
169682740sleep1121750irq/29-eth0_g0_21:19:491
236242730chrt121850irq/30-eth0_g0_21:35:071
181792730sleep0121850irq/30-eth0_g0_21:21:440
289612720sleep1121850irq/30-eth0_g0_20:30:031
209942720sleep0121750irq/29-eth0_g0_21:29:430
150012700sleep0121850irq/30-eth0_g0_22:33:120
254592690sleep1121850irq/30-eth0_g0_21:40:041
242012680chrt121750irq/29-eth0_g0_22:55:080
242012680chrt121750irq/29-eth0_g0_22:55:080
169542680sleep0121850irq/30-eth0_g0_23:55:320
112132680sleep0121750irq/29-eth0_g0_22:24:320
69742670sleep0121850irq/30-eth0_g0_23:31:500
121660ksoftirqd/1121850irq/30-eth0_g0_21:10:350
4552650chrt121750irq/29-eth0_g0_21:57:560
121640ksoftirqd/1121850irq/30-eth0_g0_20:19:501
121610ksoftirqd/1121850irq/30-eth0_g0_20:00:121
130002600sleep1121850irq/30-eth0_g0_22:28:261
117212590sleep0121750irq/29-eth0_g0_23:44:180
311752550sleep0121850irq/30-eth0_g0_23:11:590
201662540sleep1121850irq/30-eth0_g0_20:08:471
121540ksoftirqd/1121850irq/30-eth0_g0_22:37:111
121540ksoftirqd/1121850irq/30-eth0_g0_20:20:101
270162530sleep0121850irq/30-eth0_g0_23:01:500
191172530sleep0121750irq/29-eth0_g0_22:43:110
121510ksoftirqd/1121850irq/30-eth0_g0_00:30:180
121510ksoftirqd/1121850irq/30-eth0_g0_00:04:180
121500ksoftirqd/1121850irq/30-eth0_g0_19:46:351
288552490sleep1121850irq/30-eth0_g0_00:25:051
121490ksoftirqd/1121850irq/30-eth0_g0_21:54:551
121490ksoftirqd/1121850irq/30-eth0_g0_19:58:351
121490ksoftirqd/1121850irq/30-eth0_g0_19:58:351
121490ksoftirqd/1121750irq/29-eth0_g0_23:21:451
121490ksoftirqd/1121750irq/29-eth0_g0_22:21:591
27152480sleep1121750irq/29-eth0_g0_22:03:321
121480ksoftirqd/1121850irq/30-eth0_g0_22:31:401
37602470sleep1121750irq/29-eth0_g0_23:25:011
121470ksoftirqd/1121850irq/30-eth0_g0_23:19:071
121470ksoftirqd/1121850irq/30-eth0_g0_19:34:121
121470ksoftirqd/1121750irq/29-eth0_g0_22:55:141
121470ksoftirqd/1121750irq/29-eth0_g0_22:55:141
121470ksoftirqd/1121750irq/29-eth0_g0_00:09:400
74712460sleep0121750irq/29-eth0_g0_22:15:020
296032460sleep1121850irq/30-eth0_g0_21:50:031
121460ksoftirqd/1121750irq/29-eth0_g0_23:54:040
121460ksoftirqd/1121750irq/29-eth0_g0_23:00:481
121460ksoftirqd/1121750irq/29-eth0_g0_22:25:100
121460ksoftirqd/1121750irq/29-eth0_g0_20:37:471
121850450irq/30-eth0_g0_12777-21diskmemload21:24:551
121750450irq/29-eth0_g0_2566-21runrttasks23:39:160
121750450irq/29-eth0_g0_210242sleep022:47:350
121750450irq/29-eth0_g0_1932-21runrttasks19:07:380
121450ksoftirqd/1121750irq/29-eth0_g0_23:05:590
121450ksoftirqd/1121750irq/29-eth0_g0_19:22:021
267502440sleep0121750irq/29-eth0_g0_21:43:020
121440ksoftirqd/1235302sleep022:54:200
121440ksoftirqd/1121750irq/29-eth0_g0_19:26:490
121850430irq/30-eth0_g0_470-21kworker/1:123:37:481
121850430irq/30-eth0_g0_470-21kworker/1:100:30:491
121750430irq/29-eth0_g0_31ksoftirqd/023:16:530
121750430irq/29-eth0_g0_209012sleep122:47:061
121430ksoftirqd/1121850irq/30-eth0_g0_23:12:131
121430ksoftirqd/1121850irq/30-eth0_g0_19:30:070
2808899421cyclictest12800-21processes19:50:091
121750420irq/29-eth0_g0_31ksoftirqd/021:15:390
121750420irq/29-eth0_g0_2566-21runrttasks21:36:180
121750420irq/29-eth0_g0_13-21kworker/0:123:45:000
121750420irq/29-eth0_g0_13-21kworker/0:122:35:140
121420ksoftirqd/1236372chrt00:12:310
121420ksoftirqd/1121850irq/30-eth0_g0_22:15:111
121420ksoftirqd/1121750irq/29-eth0_g0_21:48:471
121420ksoftirqd/1121750irq/29-eth0_g0_20:58:151
28088994124cyclictest2566-21runrttasks21:04:231
121850410irq/30-eth0_g0_470-21kworker/1:121:20:461
121750410irq/29-eth0_g0_31ksoftirqd/023:29:260
121750410irq/29-eth0_g0_31ksoftirqd/021:48:110
121750400irq/29-eth0_g0_31ksoftirqd/020:19:500
121750400irq/29-eth0_g0_199992sleep100:04:251
121750400irq/29-eth0_g0_1687-21timerandwakeup22:00:110
121750400irq/29-eth0_g0_13-21kworker/0:100:35:040
121400ksoftirqd/1121850irq/30-eth0_g0_20:44:581
121400ksoftirqd/1121850irq/30-eth0_g0_19:39:211
121400ksoftirqd/1121750irq/29-eth0_g0_23:50:391
121400ksoftirqd/1121750irq/29-eth0_g0_00:35:211
121750390irq/29-eth0_g0_21536-21/usr/sbin/munin21:30:050
121750390irq/29-eth0_g0_13-21kworker/0:122:11:280
121750390irq/29-eth0_g0_13-21kworker/0:100:27:560
121390ksoftirqd/1121850irq/30-eth0_g0_19:21:440
121390ksoftirqd/1121750irq/29-eth0_g0_23:41:491
121390ksoftirqd/1121750irq/29-eth0_g0_22:14:491
121390ksoftirqd/1121750irq/29-eth0_g0_19:29:291
121390ksoftirqd/1121750irq/29-eth0_g0_19:15:111
121390ksoftirqd/1121750irq/29-eth0_g0_00:19:431
121750380irq/29-eth0_g0_29449-21df21:50:010
121750380irq/29-eth0_g0_26924-21runrttasks19:05:161
121380ksoftirqd/1121750irq/29-eth0_g0_21:10:111
121380ksoftirqd/1121750irq/29-eth0_g0_20:54:161
121380ksoftirqd/1121750irq/29-eth0_g0_19:10:121
2808899371cyclictest27049-21taskset20:25:061
2808899370cyclictest0-21swapper/120:44:071
121850370irq/30-eth0_g0_28483-21which23:05:121
121750370irq/29-eth0_g0_2566-21runrttasks19:16:440
121750370irq/29-eth0_g0_2175-21runrttasks20:24:460
121750370irq/29-eth0_g0_20824-21sort20:10:050
121750360irq/29-eth0_g0_544-21df20:40:010
121750360irq/29-eth0_g0_5368-21unixbench_singl20:50:120
121750360irq/29-eth0_g0_31134-21wc20:35:040
121750360irq/29-eth0_g0_2455-21lldpd19:14:030
121750360irq/29-eth0_g0_2175-21runrttasks20:26:270
121750360irq/29-eth0_g0_2175-21runrttasks19:42:000
121750360irq/29-eth0_g0_19570-21taskset20:06:240
121750360irq/29-eth0_g0_1932-21runrttasks20:03:260
121750360irq/29-eth0_g0_1932-21runrttasks19:45:590
121750360irq/29-eth0_g0_0-21swapper/019:51:460
121750350irq/29-eth0_g0_10565-21taskset21:04:130
121350ksoftirqd/1121750irq/29-eth0_g0_19:55:120
121350ksoftirqd/1121750irq/29-eth0_g0_19:55:120
121750340irq/29-eth0_g0_6239-21df_abs19:35:010
121750340irq/29-eth0_g0_3154-21rt-features20:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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