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2026-06-10 - 18:36

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 Wed Jun 10, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211020ksoftirqd/1121650irq/29-eth0_g0_10:50:471
204172620sleep1121750irq/30-eth0_g0_10:54:581
121620ksoftirqd/1160152sleep008:24:370
89572580sleep0121650irq/29-eth0_g0_12:21:420
135942580chrt121650irq/29-eth0_g0_10:29:270
126712580sleep1121750irq/30-eth0_g0_12:37:161
177342540sleep1121750irq/30-eth0_g0_10:44:371
278472530sleep0121650irq/29-eth0_g0_11:26:000
121530ksoftirqd/1121750irq/30-eth0_g0_09:54:370
108842530sleep1121750irq/30-eth0_g0_12:29:331
121510ksoftirqd/1121750irq/30-eth0_g0_11:08:341
121490ksoftirqd/1121650irq/29-eth0_g0_11:59:180
121480ksoftirqd/1121750irq/30-eth0_g0_12:27:091
121480ksoftirqd/1121750irq/30-eth0_g0_11:26:591
121480ksoftirqd/1121750irq/30-eth0_g0_11:00:000
121480ksoftirqd/1121750irq/30-eth0_g0_11:00:000
121470ksoftirqd/1121750irq/30-eth0_g0_12:08:271
121470ksoftirqd/1121750irq/30-eth0_g0_11:12:471
121470ksoftirqd/1121750irq/30-eth0_g0_09:48:531
121470ksoftirqd/1121650irq/29-eth0_g0_12:07:580
59752460sleep1121650irq/29-eth0_g0_09:57:451
121460ksoftirqd/1121750irq/30-eth0_g0_09:40:301
121460ksoftirqd/1121650irq/29-eth0_g0_11:54:221
121460ksoftirqd/1121650irq/29-eth0_g0_10:40:531
121450ksoftirqd/1121750irq/30-eth0_g0_09:32:220
121750440irq/30-eth0_g0_1219-21kworker/1:212:09:281
121650440irq/29-eth0_g0_4685-21runrttasks07:39:320
121650440irq/29-eth0_g0_1964-21runrttasks07:04:580
121650440irq/29-eth0_g0_1964-21runrttasks07:04:580
121440ksoftirqd/1121750irq/30-eth0_g0_10:29:401
121440ksoftirqd/1121750irq/30-eth0_g0_10:24:320
121440ksoftirqd/1121650irq/29-eth0_g0_07:19:391
121750430irq/30-eth0_g0_272502sleep109:11:191
121750430irq/30-eth0_g0_1219-21kworker/1:209:22:271
121430ksoftirqd/1121750irq/30-eth0_g0_11:56:060
121430ksoftirqd/1121750irq/30-eth0_g0_10:07:141
121430ksoftirqd/1121650irq/29-eth0_g0_07:24:371
121420ksoftirqd/128981-21runrttasks07:05:071
121420ksoftirqd/128981-21runrttasks07:05:071
121750410irq/30-eth0_g0_1219-21kworker/1:210:27:071
121750410irq/30-eth0_g0_121ksoftirqd/109:29:511
121650410irq/29-eth0_g0_1964-21runrttasks10:34:170
121650410irq/29-eth0_g0_13-21kworker/0:112:11:110
121650410irq/29-eth0_g0_13-21kworker/0:111:21:360
121650410irq/29-eth0_g0_13-21kworker/0:110:44:310
121410ksoftirqd/1121750irq/30-eth0_g0_08:34:330
8322400sleep0121650irq/29-eth0_g0_09:35:160
8322400sleep0121650irq/29-eth0_g0_09:35:160
121650400irq/29-eth0_g0_31ksoftirqd/009:24:280
121650400irq/29-eth0_g0_25680-21pluginstate11:19:170
121650400irq/29-eth0_g0_13-21kworker/0:112:33:260
121650400irq/29-eth0_g0_13-21kworker/0:111:39:400
121650400irq/29-eth0_g0_13-21kworker/0:109:51:250
121400ksoftirqd/1121750irq/30-eth0_g0_12:34:320
121400ksoftirqd/1121750irq/30-eth0_g0_12:25:520
121400ksoftirqd/1121750irq/30-eth0_g0_11:50:400
121400ksoftirqd/1121650irq/29-eth0_g0_10:10:211
121400ksoftirqd/1121650irq/29-eth0_g0_08:41:061
2935299391cyclictest10162-21chrt10:14:291
121750390irq/30-eth0_g0_301782sleep111:34:411
121750390irq/30-eth0_g0_301782sleep111:34:411
121750390irq/30-eth0_g0_27952-21netstat09:14:321
121750390irq/30-eth0_g0_1219-21kworker/1:209:37:311
121750390irq/30-eth0_g0_1219-21kworker/1:209:37:311
121750390irq/30-eth0_g0_121ksoftirqd/112:16:211
121750390irq/30-eth0_g0_121ksoftirqd/112:16:211
121750390irq/30-eth0_g0_121ksoftirqd/111:52:081
121650390irq/29-eth0_g0_31ksoftirqd/011:30:360
121650390irq/29-eth0_g0_25826-21unixbench_singl09:04:370
121650390irq/29-eth0_g0_13-21kworker/0:111:35:220
121650390irq/29-eth0_g0_13-21kworker/0:111:35:220
121650390irq/29-eth0_g0_13-21kworker/0:110:54:350
121650390irq/29-eth0_g0_13-21kworker/0:110:19:250
121650390irq/29-eth0_g0_13-21kworker/0:110:15:180
121650390irq/29-eth0_g0_13-21kworker/0:109:19:300
121650390irq/29-eth0_g0_13-21kworker/0:109:17:460
121390ksoftirqd/1121750irq/30-eth0_g0_12:15:410
121390ksoftirqd/1121750irq/30-eth0_g0_12:15:410
121390ksoftirqd/1121750irq/30-eth0_g0_11:47:260
121390ksoftirqd/1121750irq/30-eth0_g0_11:11:520
121390ksoftirqd/1121750irq/30-eth0_g0_11:07:350
121390ksoftirqd/1121750irq/30-eth0_g0_10:53:200
121390ksoftirqd/1121750irq/30-eth0_g0_10:43:250
121390ksoftirqd/1121750irq/30-eth0_g0_10:08:150
121390ksoftirqd/1121750irq/30-eth0_g0_09:47:420
121390ksoftirqd/1121750irq/30-eth0_g0_09:02:290
121390ksoftirqd/1121750irq/30-eth0_g0_08:43:080
121390ksoftirqd/1121750irq/30-eth0_g0_08:15:090
121390ksoftirqd/1121750irq/30-eth0_g0_08:15:090
121390ksoftirqd/1121750irq/30-eth0_g0_08:11:350
121390ksoftirqd/1121750irq/30-eth0_g0_08:11:350
121390ksoftirqd/1121750irq/30-eth0_g0_08:07:030
121390ksoftirqd/1121750irq/30-eth0_g0_07:48:430
121390ksoftirqd/1121750irq/30-eth0_g0_07:16:050
121390ksoftirqd/1121750irq/30-eth0_g0_07:16:050
121390ksoftirqd/1121650irq/29-eth0_g0_10:01:300
2935299382cyclictest7484-21grep07:49:371
2935299382cyclictest7484-21grep07:49:371
2935299381cyclictest94252sleep107:59:291
2935299381cyclictest8417-21grep07:54:331
2935299381cyclictest4354-21taskset12:04:171
2935299381cyclictest26279-21diskmemload11:16:461
2935299381cyclictest17270-21head08:29:361
121750380irq/30-eth0_g0_121ksoftirqd/110:00:181
121750380irq/30-eth0_g0_0-21swapper/111:47:111
121750380irq/30-eth0_g0_0-21swapper/111:42:171
121650380irq/29-eth0_g0_27412-21taskset09:13:130
121650380irq/29-eth0_g0_1964-21runrttasks08:22:100
121650380irq/29-eth0_g0_121ksoftirqd/111:33:281
2935299372cyclictest5841-21/usr/sbin/munin07:44:321
2935299371cyclictest30767-21/usr/sbin/munin09:24:371
2935299371cyclictest23372-21sed08:54:371
121750370irq/30-eth0_g0_1219-21kworker/1:211:00:351
121750370irq/30-eth0_g0_1219-21kworker/1:211:00:351
121750370irq/30-eth0_g0_1219-21kworker/1:209:50:171
121750370irq/30-eth0_g0_121ksoftirqd/112:20:241
121650370irq/29-eth0_g0_29440-21/usr/sbin/munin07:09:300
121650370irq/29-eth0_g0_172122sleep008:29:360
121650370irq/29-eth0_g0_13-21kworker/0:110:09:570
121650370irq/29-eth0_g0_10413-21date08:04:170
2935299361cyclictest3665-21grep07:34:361
2935299361cyclictest30122-21unixbench_singl07:09:371
2935299361cyclictest2109-21lldpd08:53:261
2935299361cyclictest14541-21grep08:19:341
2935299361cyclictest13592-21chrt08:14:391
2935299361cyclictest13592-21chrt08:14:391
2935299361cyclictest11987-21load08:09:311
2935299361cyclictest11987-21load08:09:311
2935299361cyclictest11099-21egrep10:19:261
121750360irq/30-eth0_g0_1219-21kworker/1:211:19:391
121750360irq/30-eth0_g0_0-21swapper/110:38:111
121650360irq/29-eth0_g0_7181-21taskset07:49:320
121650360irq/29-eth0_g0_7181-21taskset07:49:320
121650360irq/29-eth0_g0_1696-21ntpq09:39:340
2935299352cyclictest2012-21df_abs07:29:271
2935299351cyclictest25778-21grep09:04:371
2935299351cyclictest20425-21forks08:44:291
2935299351cyclictest18171-21netstat08:34:341
2935299351cyclictest0-21swapper/107:39:341
121650350irq/29-eth0_g0_8564-21find07:54:360
121650350irq/29-eth0_g0_0-21swapper/007:34:310
121350ksoftirqd/1121650irq/29-eth0_g0_08:59:381
2935299341cyclictest10550-21grep08:04:291
121750340irq/30-eth0_g0_30908-21latency07:14:301
121750340irq/30-eth0_g0_30908-21latency07:14:301
121650340irq/29-eth0_g0_23232-21find08:54:350
121650340irq/29-eth0_g0_1303-21tail07:24:380
121750330irq/30-eth0_g0_0-21swapper/108:24:331
121650330irq/29-eth0_g0_21862-21ntp_kernel_pll_08:49:320
121650330irq/29-eth0_g0_2144-21iostat07:29:300
121650330irq/29-eth0_g0_0-21swapper/007:19:380
121650320irq/29-eth0_g0_20512-21taskset08:44:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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