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2025-11-30 - 20:21

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 Sun Nov 30, 2025 12:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
681321510sleep1121750irq/29-eth0_g0_10:24:471
855621220sleep1121750irq/29-eth0_g0_11:46:551
1860221110sleep1121750irq/29-eth0_g0_10:52:451
1211070ksoftirqd/1121850irq/30-eth0_g0_08:16:341
2677521040sleep1121750irq/29-eth0_g0_11:12:381
2065621030chrt121750irq/29-eth0_g0_12:16:021
1211030ksoftirqd/1121850irq/30-eth0_g0_12:23:351
1211010ksoftirqd/1121850irq/30-eth0_g0_09:55:111
121990ksoftirqd/1121750irq/29-eth0_g0_07:55:020
121980ksoftirqd/1121850irq/30-eth0_g0_11:31:151
121960ksoftirqd/1121750irq/29-eth0_g0_11:02:101
129662950sleep0121750irq/29-eth0_g0_11:58:070
121930ksoftirqd/1121750irq/29-eth0_g0_10:08:450
121890ksoftirqd/1121750irq/29-eth0_g0_07:15:140
121890ksoftirqd/1121750irq/29-eth0_g0_07:15:140
250472880sleep0121850irq/30-eth0_g0_12:27:110
121870ksoftirqd/1121750irq/29-eth0_g0_08:29:410
70272830sleep1121750irq/29-eth0_g0_11:44:011
251402810sleep1121850irq/30-eth0_g0_08:30:141
121790ksoftirqd/1121850irq/30-eth0_g0_11:16:331
121780ksoftirqd/1121850irq/30-eth0_g0_11:31:090
165112770sleep1121750irq/29-eth0_g0_12:05:551
221072760sleep1121850irq/30-eth0_g0_08:23:421
222252740sleep1121850irq/30-eth0_g0_09:42:281
107302740sleep1121850irq/30-eth0_g0_10:34:041
75302730sleep1121850irq/30-eth0_g0_10:25:151
236222730sleep1121850irq/30-eth0_g0_08:26:331
122862730sleep0121850irq/30-eth0_g0_09:18:470
121730ksoftirqd/1121850irq/30-eth0_g0_12:10:121
121720ksoftirqd/1121850irq/30-eth0_g0_12:33:180
121720ksoftirqd/1121850irq/30-eth0_g0_10:37:310
217542710sleep0121750irq/29-eth0_g0_09:40:350
121710ksoftirqd/1121850irq/30-eth0_g0_12:34:521
269442700chrt121850irq/30-eth0_g0_11:13:180
289942660chrt121750irq/29-eth0_g0_09:59:520
121660ksoftirqd/1121850irq/30-eth0_g0_10:33:330
118482660sleep1121850irq/30-eth0_g0_09:17:021
121650ksoftirqd/1121850irq/30-eth0_g0_07:05:091
121650ksoftirqd/1121750irq/29-eth0_g0_12:00:111
121630ksoftirqd/165082sleep011:41:570
294682620sleep1121850irq/30-eth0_g0_12:38:301
39682610sleep0121750irq/29-eth0_g0_10:16:360
39682610sleep0121750irq/29-eth0_g0_10:16:360
164662590chrt121850irq/30-eth0_g0_09:29:051
121590ksoftirqd/163782sleep009:04:440
121590ksoftirqd/1121850irq/30-eth0_g0_11:52:460
3542570sleep1121850irq/30-eth0_g0_10:08:471
147122560chrt121750irq/29-eth0_g0_12:01:550
121540ksoftirqd/124902chrt08:55:050
121520ksoftirqd/1121850irq/30-eth0_g0_08:05:130
311462510sleep0121750irq/29-eth0_g0_11:23:410
307992510sleep1121850irq/30-eth0_g0_10:03:541
121510ksoftirqd/1121850irq/30-eth0_g0_10:00:200
206962490chrt121750irq/29-eth0_g0_12:16:120
121750470irq/29-eth0_g0_31ksoftirqd/010:40:240
121750470irq/29-eth0_g0_31ksoftirqd/010:40:240
121470ksoftirqd/1121850irq/30-eth0_g0_08:14:141
60812460sleep1121850irq/30-eth0_g0_07:44:551
178042460sleep0121750irq/29-eth0_g0_09:31:130
121750460irq/29-eth0_g0_121ksoftirqd/109:22:180
121460ksoftirqd/181212sleep009:08:310
121460ksoftirqd/1121850irq/30-eth0_g0_09:28:310
162082450sleep1121850irq/30-eth0_g0_10:46:241
121850450irq/30-eth0_g0_31ksoftirqd/009:10:050
121750450irq/29-eth0_g0_31ksoftirqd/012:07:250
121750450irq/29-eth0_g0_31ksoftirqd/010:45:540
121750450irq/29-eth0_g0_220412sleep007:04:540
121450ksoftirqd/1121850irq/30-eth0_g0_11:56:541
295152440sleep0121850irq/30-eth0_g0_12:38:410
121750440irq/29-eth0_g0_0-21swapper/008:40:130
121440ksoftirqd/1121850irq/30-eth0_g0_08:49:580
2403699431cyclictest29908-21ntp_kernel_err11:20:101
138252430chrt121850irq/30-eth0_g0_09:21:441
128442430sleep1121850irq/30-eth0_g0_10:39:201
121750430irq/29-eth0_g0_21111-21timerandwakeup08:20:150
121430ksoftirqd/1121750irq/29-eth0_g0_12:29:271
121430ksoftirqd/1121750irq/29-eth0_g0_11:37:171
121850420irq/30-eth0_g0_470-21kworker/1:110:16:271
121850420irq/30-eth0_g0_470-21kworker/1:110:16:271
121750420irq/29-eth0_g0_31ksoftirqd/010:21:590
121750420irq/29-eth0_g0_31ksoftirqd/007:53:300
121750420irq/29-eth0_g0_21721-21runrttasks12:19:590
121420ksoftirqd/1172602chrt08:10:420
66292410sleep1121850irq/30-eth0_g0_09:05:051
121750410irq/29-eth0_g0_9452sleep011:29:280
121750410irq/29-eth0_g0_3507-21iostat11:35:070
121750410irq/29-eth0_g0_2566-21runrttasks07:47:570
121750410irq/29-eth0_g0_2175-21runrttasks10:57:040
121750410irq/29-eth0_g0_1932-21runrttasks09:45:000
121410ksoftirqd/1121850irq/30-eth0_g0_08:18:330
2403699401cyclictest9330-21head09:10:151
2403699401cyclictest265802sleep109:53:261
2403699401cyclictest265802sleep109:53:261
2403699401cyclictest19424-21awk09:35:131
121850400irq/30-eth0_g0_470-21kworker/1:110:40:041
121850400irq/30-eth0_g0_470-21kworker/1:110:40:041
121750400irq/29-eth0_g0_2607-21snmpd08:34:330
121750400irq/29-eth0_g0_2566-21runrttasks11:16:590
121750400irq/29-eth0_g0_2566-21runrttasks09:49:570
121750400irq/29-eth0_g0_2566-21runrttasks09:49:570
121750400irq/29-eth0_g0_23685-21/usr/sbin/munin11:05:080
121400ksoftirqd/1121850irq/30-eth0_g0_07:59:590
121400ksoftirqd/1121750irq/29-eth0_g0_08:43:111
121400ksoftirqd/1121750irq/29-eth0_g0_07:56:201
2403699391cyclictest4520-21seq07:40:131
2403699391cyclictest4520-21seq07:40:131
2403699391cyclictest32277-21chrt08:48:201
2403699391cyclictest3003-21expr08:55:131
2403699391cyclictest193862sleep110:55:051
121850390irq/30-eth0_g0_470-21kworker/1:111:05:311
121850390irq/30-eth0_g0_1087-21sort11:29:521
121750390irq/29-eth0_g0_31ksoftirqd/010:29:370
121750390irq/29-eth0_g0_13-21kworker/0:112:13:120
121750390irq/29-eth0_g0_13-21kworker/0:110:10:150
121750390irq/29-eth0_g0_13-21kworker/0:109:37:200
121750390irq/29-eth0_g0_121ksoftirqd/111:48:430
121750390irq/29-eth0_g0_121ksoftirqd/109:47:381
121750390irq/29-eth0_g0_0-21swapper/007:34:580
2403699381cyclictest307342sleep107:25:121
2403699381cyclictest17094-21memory09:30:071
2403699381cyclictest161842sleep108:09:351
2403699381cyclictest0-21swapper/110:13:001
121750380irq/29-eth0_g0_31346-21timerandwakeup08:45:150
121750380irq/29-eth0_g0_17794-21mailstats10:50:160
2403699372cyclictest26276-21taskset07:15:051
2403699372cyclictest26276-21taskset07:15:051
2403699371cyclictest4800-21seq09:00:081
2403699371cyclictest2064-21cpu07:35:051
2403699371cyclictest13930-21taskset08:03:461
121750370irq/29-eth0_g0_601-21unixbench_multi07:30:140
121750370irq/29-eth0_g0_27179-21processes08:35:120
121750370irq/29-eth0_g0_21962-21grep11:00:240
121370ksoftirqd/1121750irq/29-eth0_g0_11:50:111
121370ksoftirqd/1121750irq/29-eth0_g0_07:30:071
2403699361cyclictest8435-21cat07:50:081
2403699361cyclictest286882sleep107:20:151
2403699361cyclictest26965-21cat08:35:091
121750360irq/29-eth0_g0_24157-21/usr/sbin/munin07:10:130
121750360irq/29-eth0_g0_2175-21runrttasks07:20:050
121750360irq/29-eth0_g0_0-21swapper/007:42:370
121750360irq/29-eth0_g0_0-21swapper/007:42:370
2403699351cyclictest24859-21taskset07:10:151
121750350irq/29-eth0_g0_2479-21lldpd07:27:130
121350ksoftirqd/1121750irq/29-eth0_g0_08:50:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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