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2026-06-22 - 21:38

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 all highest latencies:
System rack3slot5s.osadl.org (updated Mon Jun 22, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211100ksoftirqd/1121750irq/30-eth0_g0_08:34:031
1211070ksoftirqd/1121750irq/30-eth0_g0_12:14:001
121840ksoftirqd/1121750irq/30-eth0_g0_09:34:101
63192770sleep1121750irq/30-eth0_g0_12:04:001
121670ksoftirqd/1121750irq/30-eth0_g0_08:23:170
68092650sleep0121650irq/29-eth0_g0_09:53:570
197362620sleep1121750irq/30-eth0_g0_10:44:131
115632570sleep1121750irq/30-eth0_g0_10:13:481
34782530sleep1121750irq/30-eth0_g0_11:51:501
251162520sleep0121750irq/30-eth0_g0_11:08:510
121650520irq/29-eth0_g0_31ksoftirqd/011:04:020
121500ksoftirqd/1121750irq/30-eth0_g0_10:49:000
121500ksoftirqd/1121750irq/30-eth0_g0_09:52:381
143732480sleep1121650irq/29-eth0_g0_12:35:161
121470ksoftirqd/1121750irq/30-eth0_g0_10:34:221
121650460irq/29-eth0_g0_31ksoftirqd/011:43:480
121460ksoftirqd/1121650irq/29-eth0_g0_09:26:110
121750450irq/30-eth0_g0_1219-21kworker/1:209:30:341
121450ksoftirqd/1121650irq/29-eth0_g0_09:11:180
121450ksoftirqd/1121650irq/29-eth0_g0_08:29:101
121440ksoftirqd/1121750irq/30-eth0_g0_11:08:321
121440ksoftirqd/1121750irq/30-eth0_g0_09:38:300
121440ksoftirqd/1121650irq/29-eth0_g0_09:22:591
121650430irq/29-eth0_g0_30570-21unixbench_singl07:04:080
121650430irq/29-eth0_g0_31ksoftirqd/010:23:530
121650430irq/29-eth0_g0_31ksoftirqd/010:07:130
121650430irq/29-eth0_g0_121ksoftirqd/111:19:210
121430ksoftirqd/1121750irq/30-eth0_g0_12:28:291
121430ksoftirqd/1121750irq/30-eth0_g0_10:28:271
121430ksoftirqd/1121650irq/29-eth0_g0_11:10:441
121430ksoftirqd/1121650irq/29-eth0_g0_08:47:421
121430ksoftirqd/1121650irq/29-eth0_g0_08:47:421
121750420irq/30-eth0_g0_32441-21cat11:38:481
121420ksoftirqd/1121750irq/30-eth0_g0_11:14:361
121420ksoftirqd/1121650irq/29-eth0_g0_09:24:031
121750410irq/30-eth0_g0_28035-21diskmemload10:54:051
121750410irq/30-eth0_g0_121ksoftirqd/110:49:051
121650410irq/29-eth0_g0_31ksoftirqd/010:45:320
121410ksoftirqd/1121650irq/29-eth0_g0_10:19:031
121410ksoftirqd/1121650irq/29-eth0_g0_10:02:291
121750400irq/30-eth0_g0_121ksoftirqd/112:19:551
121750400irq/30-eth0_g0_121ksoftirqd/112:19:551
121750400irq/30-eth0_g0_0-21swapper/109:16:161
121650400irq/29-eth0_g0_31701-21proc_pri11:34:080
121650400irq/29-eth0_g0_13-21kworker/0:112:32:170
121650400irq/29-eth0_g0_13-21kworker/0:112:02:560
121650400irq/29-eth0_g0_13-21kworker/0:110:58:300
121650400irq/29-eth0_g0_121ksoftirqd/112:29:371
121650400irq/29-eth0_g0_121ksoftirqd/110:02:440
121650400irq/29-eth0_g0_121ksoftirqd/109:13:461
121400ksoftirqd/1121750irq/30-eth0_g0_11:49:450
121400ksoftirqd/1121650irq/29-eth0_g0_09:08:491
3103299392cyclictest21147-21awk08:39:041
3103299392cyclictest21147-21awk08:39:041
3103299391cyclictest0-21swapper/107:25:571
176232390sleep117626-21sendmail_mailqu08:24:091
121750390irq/30-eth0_g0_1219-21kworker/1:211:54:441
121750390irq/30-eth0_g0_121ksoftirqd/109:43:521
121650390irq/29-eth0_g0_30674-21runrttasks07:04:491
121650390irq/29-eth0_g0_13-21kworker/0:112:22:580
121650390irq/29-eth0_g0_13-21kworker/0:112:22:580
121650390irq/29-eth0_g0_13-21kworker/0:112:04:270
121650390irq/29-eth0_g0_13-21kworker/0:110:18:500
121650390irq/29-eth0_g0_13-21kworker/0:109:15:410
121390ksoftirqd/1121750irq/30-eth0_g0_12:36:060
121390ksoftirqd/1121750irq/30-eth0_g0_11:57:510
121390ksoftirqd/1121750irq/30-eth0_g0_10:37:170
121390ksoftirqd/1121750irq/30-eth0_g0_10:15:420
121390ksoftirqd/1121750irq/30-eth0_g0_10:10:560
121390ksoftirqd/1121750irq/30-eth0_g0_09:44:460
121390ksoftirqd/1121750irq/30-eth0_g0_09:30:100
121390ksoftirqd/1121750irq/30-eth0_g0_09:23:430
3103299383cyclictest32585-21irqstats07:14:031
3103299381cyclictest728-21head11:39:091
3103299381cyclictest6521-21ps07:39:051
3103299381cyclictest12377-21chrt08:04:021
3103299381cyclictest10364-21chrt10:08:491
127682380sleep1121650irq/29-eth0_g0_10:18:391
121750380irq/30-eth0_g0_31ksoftirqd/012:14:580
121750380irq/30-eth0_g0_31ksoftirqd/009:39:230
121750380irq/30-eth0_g0_31ksoftirqd/009:39:230
121750380irq/30-eth0_g0_29048-21taskset11:24:011
121750380irq/30-eth0_g0_0-21swapper/109:41:051
121750380irq/30-eth0_g0_0-21swapper/109:41:051
121650380irq/29-eth0_g0_32501-21seq07:14:000
121650380irq/29-eth0_g0_1964-21runrttasks08:47:330
121650380irq/29-eth0_g0_1964-21runrttasks08:47:330
121650380irq/29-eth0_g0_1964-21runrttasks08:02:370
121650380irq/29-eth0_g0_13-21kworker/0:112:24:330
121650380irq/29-eth0_g0_13-21kworker/0:111:31:340
121650380irq/29-eth0_g0_13-21kworker/0:111:26:310
121650380irq/29-eth0_g0_13-21kworker/0:110:40:100
121380ksoftirqd/1121750irq/30-eth0_g0_10:29:580
121380ksoftirqd/1121750irq/30-eth0_g0_09:53:410
121380ksoftirqd/1121750irq/30-eth0_g0_08:27:360
121380ksoftirqd/1121650irq/29-eth0_g0_10:39:011
121380ksoftirqd/1121650irq/29-eth0_g0_09:54:061
3103299371cyclictest15830-21cat08:18:491
121650370irq/29-eth0_g0_27520-21latency_hist11:18:490
121650370irq/29-eth0_g0_1964-21runrttasks12:12:300
121650370irq/29-eth0_g0_1964-21runrttasks09:06:330
121650370irq/29-eth0_g0_1964-21runrttasks07:27:060
121650370irq/29-eth0_g0_1964-21runrttasks07:10:280
121650370irq/29-eth0_g0_13-21kworker/0:111:45:430
121650370irq/29-eth0_g0_13-21kworker/0:110:59:400
121370ksoftirqd/1121750irq/30-eth0_g0_12:08:531
121370ksoftirqd/1121650irq/29-eth0_g0_11:19:551
3103299362cyclictest4165-21awk07:29:091
3103299361cyclictest30273-21taskset11:29:041
3103299361cyclictest25861-21chrt08:59:021
3103299361cyclictest1788-21unixbench_multi07:19:101
3103299361cyclictest15924-21chrt08:18:581
3103299361cyclictest15905-21cat10:29:111
121750360irq/30-eth0_g0_1219-21kworker/1:211:00:451
121750360irq/30-eth0_g0_0-21swapper/111:59:071
121750360irq/30-eth0_g0_0-21swapper/111:45:471
121650360irq/29-eth0_g0_4249-21unixbench_multi07:29:100
121650360irq/29-eth0_g0_23347-21df_abs08:49:000
121650360irq/29-eth0_g0_1964-21runrttasks08:55:140
121650360irq/29-eth0_g0_1964-21runrttasks08:41:110
121650360irq/29-eth0_g0_1964-21runrttasks08:41:110
121650360irq/29-eth0_g0_1964-21runrttasks08:38:100
121650360irq/29-eth0_g0_1964-21runrttasks07:53:020
121650360irq/29-eth0_g0_1964-21runrttasks07:53:020
121650360irq/29-eth0_g0_1964-21runrttasks07:39:430
121650360irq/29-eth0_g0_1964-21runrttasks07:35:230
121650360irq/29-eth0_g0_10381-21sed07:54:110
121360ksoftirqd/1121750irq/30-eth0_g0_09:03:320
3103299351cyclictest31765-21grep07:09:111
3103299351cyclictest24707-21latency08:54:031
3103299351cyclictest10072-21cat07:54:051
121650350irq/29-eth0_g0_1964-21runrttasks08:30:080
121650350irq/29-eth0_g0_1964-21runrttasks07:44:490
121650350irq/29-eth0_g0_1964-21runrttasks07:44:490
121650350irq/29-eth0_g0_0-21swapper/008:04:050
121350ksoftirqd/1121750irq/30-eth0_g0_08:16:380
121350ksoftirqd/1121750irq/30-eth0_g0_08:09:260
3103299341cyclictest7992-21grep07:44:111
3103299341cyclictest7992-21grep07:44:111
3103299341cyclictest23216-21/usr/sbin/munin08:49:041
121650340irq/29-eth0_g0_1964-21runrttasks07:18:550
3103299331cyclictest9141-21unixbench_multi07:49:101
3103299331cyclictest9141-21unixbench_multi07:49:101
3103299330cyclictest0-21swapper/107:34:071
3103299321cyclictest0-21swapper/108:09:051
121320ksoftirqd/111717-21taskset07:59:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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