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2026-07-20 - 01:35

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 Jul 19, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312230ksoftirqd/04292chrt07:03:190
121990ksoftirqd/1121750irq/30-eth0_g0_08:52:421
121970ksoftirqd/1121750irq/30-eth0_g0_11:45:121
121950ksoftirqd/114112sleep009:21:150
121830ksoftirqd/1121750irq/30-eth0_g0_09:44:491
144932780sleep1121650irq/29-eth0_g0_12:27:371
121700ksoftirqd/1262652sleep011:02:540
121680ksoftirqd/1121750irq/30-eth0_g0_12:15:400
306022570sleep1121750irq/30-eth0_g0_11:18:181
208372520sleep0121750irq/30-eth0_g0_10:38:520
69042510sleep0121650irq/29-eth0_g0_11:54:550
134292500sleep1121750irq/30-eth0_g0_10:08:121
134292500sleep1121750irq/30-eth0_g0_10:08:121
32382490sleep0121650irq/29-eth0_g0_11:40:030
62662470sleep0121650irq/29-eth0_g0_09:40:270
21332470sleep0121750irq/30-eth0_g0_11:36:270
121470ksoftirqd/1121750irq/30-eth0_g0_10:00:381
121650460irq/29-eth0_g0_1963-21ntpd12:10:260
121650460irq/29-eth0_g0_1963-21ntpd12:10:260
121460ksoftirqd/1121750irq/30-eth0_g0_10:45:320
121460ksoftirqd/1121750irq/30-eth0_g0_10:05:171
121460ksoftirqd/1121650irq/29-eth0_g0_10:21:071
219402450sleep1121750irq/30-eth0_g0_10:43:051
121450ksoftirqd/1121650irq/29-eth0_g0_10:29:060
121450ksoftirqd/1121650irq/29-eth0_g0_08:13:011
121650440irq/29-eth0_g0_16213-21grep12:32:590
121650440irq/29-eth0_g0_121ksoftirqd/111:06:591
121440ksoftirqd/1121750irq/30-eth0_g0_09:37:120
121440ksoftirqd/1121650irq/29-eth0_g0_10:27:421
121440ksoftirqd/1121650irq/29-eth0_g0_09:49:031
121750430irq/30-eth0_g0_5738-21taskset07:27:251
121750430irq/30-eth0_g0_209772sleep110:40:301
121750420irq/30-eth0_g0_1219-21kworker/1:211:33:461
121750420irq/30-eth0_g0_121ksoftirqd/110:54:171
121650420irq/29-eth0_g0_31ksoftirqd/011:18:460
121420ksoftirqd/1121650irq/29-eth0_g0_12:00:321
121420ksoftirqd/1121650irq/29-eth0_g0_09:56:051
121420ksoftirqd/1121650irq/29-eth0_g0_09:24:371
296752410sleep0121650irq/29-eth0_g0_11:16:500
121750410irq/30-eth0_g0_1219-21kworker/1:210:35:481
121750410irq/30-eth0_g0_121ksoftirqd/109:11:551
121650410irq/29-eth0_g0_31ksoftirqd/010:57:520
121650410irq/29-eth0_g0_24952-21unixbench_singl08:43:040
121650410irq/29-eth0_g0_13-21kworker/0:112:02:570
121650410irq/29-eth0_g0_13-21kworker/0:110:57:300
121650410irq/29-eth0_g0_13-21kworker/0:110:13:440
121650410irq/29-eth0_g0_121ksoftirqd/111:24:260
121650410irq/29-eth0_g0_121ksoftirqd/109:13:150
121410ksoftirqd/1121750irq/30-eth0_g0_10:19:140
121410ksoftirqd/1121750irq/30-eth0_g0_08:25:100
826994028cyclictest10918-21/usr/sbin/munin12:12:581
82699401cyclictest30289-21diskmemload09:42:251
55472400sleep0121750irq/30-eth0_g0_11:48:220
121750400irq/30-eth0_g0_121ksoftirqd/112:21:361
121750400irq/30-eth0_g0_121ksoftirqd/109:20:381
121750400irq/30-eth0_g0_0-21swapper/109:07:071
121650400irq/29-eth0_g0_13-21kworker/0:112:32:090
121650400irq/29-eth0_g0_13-21kworker/0:112:26:430
121650400irq/29-eth0_g0_13-21kworker/0:109:28:250
121650400irq/29-eth0_g0_13-21kworker/0:109:28:250
121400ksoftirqd/1121750irq/30-eth0_g0_12:02:330
121400ksoftirqd/1121750irq/30-eth0_g0_11:08:320
121400ksoftirqd/1121750irq/30-eth0_g0_10:49:310
121400ksoftirqd/1121750irq/30-eth0_g0_10:10:020
121400ksoftirqd/1121750irq/30-eth0_g0_10:10:020
121400ksoftirqd/1121750irq/30-eth0_g0_09:07:020
121400ksoftirqd/1121750irq/30-eth0_g0_08:53:530
121400ksoftirqd/1121750irq/30-eth0_g0_08:51:350
121400ksoftirqd/1121750irq/30-eth0_g0_08:08:510
121400ksoftirqd/1121750irq/30-eth0_g0_07:19:190
121400ksoftirqd/1121650irq/29-eth0_g0_11:52:111
121400ksoftirqd/1121650irq/29-eth0_g0_07:46:361
101132400sleep0121650irq/29-eth0_g0_07:43:040
121750390irq/30-eth0_g0_30289-21diskmemload10:47:471
121750390irq/30-eth0_g0_1219-21kworker/1:211:53:001
121750390irq/30-eth0_g0_1219-21kworker/1:211:29:181
121750390irq/30-eth0_g0_1219-21kworker/1:209:31:041
121750390irq/30-eth0_g0_1219-21kworker/1:209:31:041
121750390irq/30-eth0_g0_121ksoftirqd/111:41:351
121750390irq/30-eth0_g0_121ksoftirqd/110:27:491
121750390irq/30-eth0_g0_0-21swapper/109:13:011
121750390irq/30-eth0_g0_0-21swapper/108:52:581
121650390irq/29-eth0_g0_13-21kworker/0:111:46:110
121650390irq/29-eth0_g0_13-21kworker/0:110:23:060
121650390irq/29-eth0_g0_13-21kworker/0:109:42:470
121650390irq/29-eth0_g0_13-21kworker/0:109:22:480
121390ksoftirqd/1121750irq/30-eth0_g0_12:21:170
121390ksoftirqd/1121750irq/30-eth0_g0_10:06:590
121390ksoftirqd/1121750irq/30-eth0_g0_09:58:430
121390ksoftirqd/1121750irq/30-eth0_g0_08:42:030
121390ksoftirqd/1121750irq/30-eth0_g0_08:42:030
121390ksoftirqd/1121750irq/30-eth0_g0_07:49:560
121390ksoftirqd/1121750irq/30-eth0_g0_07:33:280
121390ksoftirqd/1121650irq/29-eth0_g0_09:33:321
121390ksoftirqd/1121650irq/29-eth0_g0_07:33:541
82699381cyclictest1574-21sed07:08:041
121750380irq/30-eth0_g0_32261-21df_abs07:02:541
121750380irq/30-eth0_g0_1219-21kworker/1:212:31:101
121750380irq/30-eth0_g0_1219-21kworker/1:211:23:191
121750380irq/30-eth0_g0_1219-21kworker/1:211:00:411
121650380irq/29-eth0_g0_82599cyclictest09:55:160
121650380irq/29-eth0_g0_1964-21runrttasks08:22:430
121650380irq/29-eth0_g0_13673-21ps07:58:010
121650380irq/29-eth0_g0_121ksoftirqd/112:07:201
121380ksoftirqd/1121750irq/30-eth0_g0_08:36:480
121380ksoftirqd/1121750irq/30-eth0_g0_08:36:480
121380ksoftirqd/1121650irq/29-eth0_g0_12:09:511
121380ksoftirqd/1121650irq/29-eth0_g0_12:09:511
121380ksoftirqd/1121650irq/29-eth0_g0_07:58:211
121380ksoftirqd/1121650irq/29-eth0_g0_07:29:431
121380ksoftirqd/1121650irq/29-eth0_g0_07:29:431
82699372cyclictest15132-21grep08:03:061
82699371cyclictest30289-21diskmemload11:11:261
82699371cyclictest21801-21egrep08:32:531
82699371cyclictest21801-21egrep08:32:531
82699371cyclictest16220-21taskset12:33:001
121750370irq/30-eth0_g0_1219-21kworker/1:211:15:231
121750370irq/30-eth0_g0_1219-21kworker/1:210:13:221
121650370irq/29-eth0_g0_9007-21unixbench_singl07:38:050
121650370irq/29-eth0_g0_13-21kworker/0:111:29:000
121650370irq/29-eth0_g0_13-21kworker/0:110:33:340
121650370irq/29-eth0_g0_13-21kworker/0:109:48:100
121650370irq/29-eth0_g0_13-21kworker/0:109:12:340
82699361cyclictest8772-21ps07:38:021
82699361cyclictest3987-21cat07:18:051
82699361cyclictest24803-21sendmail_mailtr08:43:031
82699361cyclictest15675-21cpu08:07:531
82699361cyclictest11470-21head07:48:051
121650360irq/29-eth0_g0_6530-21unixbench_singl07:28:060
121650360irq/29-eth0_g0_6530-21unixbench_singl07:28:060
121650360irq/29-eth0_g0_5328-21unixbench_singl07:23:040
121650360irq/29-eth0_g0_28062-21df_abs08:57:540
121650360irq/29-eth0_g0_15120-21unixbench_singl08:03:060
121650360irq/29-eth0_g0_12296-21missed_timers07:52:590
121650360irq/29-eth0_g0_0-21swapper/007:07:540
82699351cyclictest0-21swapper/107:13:571
121650350irq/29-eth0_g0_2245-21df07:12:550
121650350irq/29-eth0_g0_21032-21wc08:28:020
121650350irq/29-eth0_g0_17492-21timerandwakeup08:13:020
82699341cyclictest20572-21/usr/sbin/munin08:28:001
82699331cyclictest23659-21unixbench_multi08:38:051
82699331cyclictest23659-21unixbench_multi08:38:051
82699331cyclictest20040-21unixbench_singl08:23:061
82699331cyclictest11996-21egrep07:52:541
82699331cyclictest0-21swapper/109:02:421
82699321cyclictest18701-21timerandwakeup08:18:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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