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2026-08-22 - 08:49

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 Sat Aug 22, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1433821610sleep1121650irq/29-eth0_g0_22:27:041
963721300sleep0121750irq/30-eth0_g0_22:08:520
1710821180sleep0121650irq/29-eth0_g0_22:41:050
112182930sleep0121650irq/29-eth0_g0_00:27:230
168022900sleep1121750irq/30-eth0_g0_22:37:321
121860ksoftirqd/1121750irq/30-eth0_g0_23:32:211
239352790sleep1121750irq/30-eth0_g0_23:06:451
180042710sleep1121750irq/30-eth0_g0_22:42:161
23372600sleep0121750irq/30-eth0_g0_21:38:560
34292550sleep1121750irq/30-eth0_g0_21:42:281
254062550sleep0121650irq/29-eth0_g0_23:13:230
121520ksoftirqd/1121650irq/29-eth0_g0_22:44:380
156632500sleep0121750irq/30-eth0_g0_22:33:240
121500ksoftirqd/1121750irq/30-eth0_g0_21:54:361
121500ksoftirqd/1121650irq/29-eth0_g0_21:22:191
121490ksoftirqd/1121750irq/30-eth0_g0_23:20:231
121490ksoftirqd/1121750irq/30-eth0_g0_23:20:231
266822480sleep0121650irq/29-eth0_g0_23:18:550
266822480sleep0121650irq/29-eth0_g0_23:18:550
121470ksoftirqd/1121750irq/30-eth0_g0_21:48:221
38302460sleep0121750irq/30-eth0_g0_21:46:220
121750460irq/30-eth0_g0_31ksoftirqd/019:01:390
121650460irq/29-eth0_g0_31ksoftirqd/023:01:220
121650460irq/29-eth0_g0_13-21kworker/0:121:46:590
121460ksoftirqd/1121750irq/30-eth0_g0_22:51:511
230702450sleep0121750irq/30-eth0_g0_23:04:380
14802450sleep1121650irq/29-eth0_g0_23:47:501
14802450sleep1121650irq/29-eth0_g0_23:47:501
121450ksoftirqd/1121650irq/29-eth0_g0_22:56:341
121450ksoftirqd/1121650irq/29-eth0_g0_22:24:380
121750440irq/30-eth0_g0_1219-21kworker/1:223:42:261
121750440irq/30-eth0_g0_1219-21kworker/1:223:14:091
121650430irq/29-eth0_g0_31ksoftirqd/021:06:240
121650430irq/29-eth0_g0_31ksoftirqd/021:01:380
121430ksoftirqd/1121650irq/29-eth0_g0_00:11:111
121750420irq/30-eth0_g0_1219-21kworker/1:221:35:091
121750420irq/30-eth0_g0_1219-21kworker/1:221:11:431
121650420irq/29-eth0_g0_5704-21df_inode00:06:340
121650420irq/29-eth0_g0_31ksoftirqd/023:35:270
121650420irq/29-eth0_g0_31ksoftirqd/022:51:340
121650420irq/29-eth0_g0_18813-21netstat22:46:380
121650420irq/29-eth0_g0_13-21kworker/0:100:25:520
121420ksoftirqd/1121650irq/29-eth0_g0_23:53:001
121750410irq/30-eth0_g0_1219-21kworker/1:200:11:371
121650410irq/29-eth0_g0_31ksoftirqd/000:04:430
121650410irq/29-eth0_g0_13-21kworker/0:123:51:540
121650410irq/29-eth0_g0_13-21kworker/0:123:22:490
121650410irq/29-eth0_g0_13-21kworker/0:122:16:440
121650410irq/29-eth0_g0_13-21kworker/0:100:18:160
121650410irq/29-eth0_g0_121ksoftirqd/123:38:560
121650410irq/29-eth0_g0_121ksoftirqd/123:38:560
121650410irq/29-eth0_g0_0-21swapper/019:51:450
121410ksoftirqd/1121750irq/30-eth0_g0_22:21:091
121750400irq/30-eth0_g0_1219-21kworker/1:221:29:501
121750400irq/30-eth0_g0_121ksoftirqd/122:05:471
121750400irq/30-eth0_g0_121ksoftirqd/100:25:411
121650400irq/29-eth0_g0_6438-21df_inode21:56:340
121650400irq/29-eth0_g0_31ksoftirqd/022:11:450
121650400irq/29-eth0_g0_13-21kworker/0:123:46:260
121650400irq/29-eth0_g0_13-21kworker/0:123:46:260
121650400irq/29-eth0_g0_13-21kworker/0:122:01:330
2961399392cyclictest10042-21awk19:56:421
2961399391cyclictest0-21swapper/123:58:191
121750390irq/30-eth0_g0_422-21latency21:31:370
121750390irq/30-eth0_g0_31ksoftirqd/000:01:220
121750390irq/30-eth0_g0_1219-21kworker/1:223:40:411
121750390irq/30-eth0_g0_1219-21kworker/1:223:40:411
121750390irq/30-eth0_g0_1219-21kworker/1:221:08:081
121750390irq/30-eth0_g0_121ksoftirqd/121:21:131
121750390irq/30-eth0_g0_121ksoftirqd/100:32:251
121750390irq/30-eth0_g0_11612-21chrt20:03:551
121750390irq/30-eth0_g0_0-21swapper/122:47:421
121750390irq/30-eth0_g0_0-21swapper/122:22:241
121650390irq/29-eth0_g0_31ksoftirqd/000:34:070
121650390irq/29-eth0_g0_2961299cyclictest23:27:150
121650390irq/29-eth0_g0_24619-21sendmail_mailqu20:56:400
121650390irq/29-eth0_g0_22037-21ntp_offset20:46:400
121650390irq/29-eth0_g0_16248-21unixbench_singl20:21:430
121650390irq/29-eth0_g0_13-21kworker/0:123:42:210
121650390irq/29-eth0_g0_13-21kworker/0:123:11:200
121650390irq/29-eth0_g0_13-21kworker/0:121:14:450
121390ksoftirqd/1121750irq/30-eth0_g0_21:52:240
2961399381cyclictest8238-21latency00:16:371
2961399381cyclictest22022-21taskset20:46:391
121750380irq/30-eth0_g0_23436-21swap20:51:431
121750380irq/30-eth0_g0_1219-21kworker/1:223:22:391
121750380irq/30-eth0_g0_1219-21kworker/1:222:32:251
121750380irq/30-eth0_g0_0-21swapper/123:04:461
121650380irq/29-eth0_g0_31ksoftirqd/022:27:560
121650380irq/29-eth0_g0_29191-21iostat21:16:360
121650380irq/29-eth0_g0_23114-21sort20:51:360
121650380irq/29-eth0_g0_13-21kworker/0:121:23:350
121650380irq/29-eth0_g0_13-21kworker/0:100:15:350
121380ksoftirqd/1121750irq/30-eth0_g0_20:11:441
121380ksoftirqd/1121750irq/30-eth0_g0_19:17:271
121380ksoftirqd/1121750irq/30-eth0_g0_19:17:271
121380ksoftirqd/1121650irq/29-eth0_g0_20:29:581
121380ksoftirqd/1121650irq/29-eth0_g0_19:33:051
121380ksoftirqd/1121650irq/29-eth0_g0_19:33:051
2961399372cyclictest9392-21munin-run19:56:221
2961399372cyclictest24237-21df_inode20:56:331
2961399371cyclictest4333-21egrep00:01:331
2961399371cyclictest31182-21chrt19:11:371
2961399371cyclictest19421-21ethtool20:36:361
2961399371cyclictest0-21swapper/119:46:431
121750370irq/30-eth0_g0_25601-21cat21:01:371
121750370irq/30-eth0_g0_18456-21proc_pri20:31:401
121750370irq/30-eth0_g0_1219-21kworker/1:223:26:321
121750370irq/30-eth0_g0_1219-21kworker/1:221:38:011
121750370irq/30-eth0_g0_121ksoftirqd/100:28:091
121650370irq/29-eth0_g0_19640-21open_inodes20:36:410
121650370irq/29-eth0_g0_13-21kworker/0:121:29:370
121650370irq/29-eth0_g0_0-21swapper/019:11:410
2961399362cyclictest1964-21runrttasks21:57:431
2961399361cyclictest5834-21egrep19:41:321
2961399361cyclictest12510-21cat20:06:411
2961399361cyclictest10459-21awk22:11:431
2961399361cyclictest0-21swapper/119:36:381
121750360irq/30-eth0_g0_2961399cyclictest22:06:441
121650360irq/29-eth0_g0_6540-21unixbench_singl19:41:450
121650360irq/29-eth0_g0_4669-21df_abs19:36:330
121650360irq/29-eth0_g0_32398-21sort19:16:360
121650360irq/29-eth0_g0_32398-21sort19:16:360
121650360irq/29-eth0_g0_30237-21sendmail_mailqu19:06:420
121650360irq/29-eth0_g0_21134-21grep20:41:420
121650360irq/29-eth0_g0_14731-21ntpdc20:16:390
121650360irq/29-eth0_g0_11916-21egrep20:06:320
121360ksoftirqd/128623-21runrttasks19:01:351
121360ksoftirqd/1121650irq/29-eth0_g0_19:26:221
2961399351cyclictest20643-21/usr/sbin/munin20:41:341
121650350irq/29-eth0_g0_8187-21ls19:51:230
121650350irq/29-eth0_g0_2426-21latency19:26:370
121650350irq/29-eth0_g0_1964-21runrttasks20:34:280
121650350irq/29-eth0_g0_1964-21runrttasks19:57:000
121650350irq/29-eth0_g0_1038-21sed19:21:310
121650340irq/29-eth0_g0_1964-21runrttasks20:30:070
121650340irq/29-eth0_g0_10955-21latency20:01:390
2961399331cyclictest2423-21runrttasks19:26:371
121750330irq/30-eth0_g0_0-21swapper/120:16:361
121650330irq/29-eth0_g0_1964-21runrttasks20:14:410
121650330irq/29-eth0_g0_16744-21taskset20:26:221
121650320irq/29-eth0_g0_1964-21runrttasks19:34:340
121650320irq/29-eth0_g0_1964-21runrttasks19:34:340
121750300irq/30-eth0_g0_29767-21df19:06:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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