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2026-06-09 - 19:30

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 Tue Jun 09, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
605121330sleep0121650irq/29-eth0_g0_09:31:020
388121050sleep0121650irq/29-eth0_g0_09:24:160
270362690sleep0121650irq/29-eth0_g0_10:57:480
20162600sleep0121750irq/30-eth0_g0_11:28:180
121570ksoftirqd/1121750irq/30-eth0_g0_07:49:361
155062490sleep0121650irq/29-eth0_g0_12:23:180
181672470sleep0121750irq/30-eth0_g0_08:09:290
121750470irq/30-eth0_g0_121ksoftirqd/109:14:201
118052470sleep1121650irq/29-eth0_g0_12:07:571
121750460irq/30-eth0_g0_1219-21kworker/1:210:34:291
121650460irq/29-eth0_g0_19315-21unixbench_multi10:24:400
122122440chrt121650irq/29-eth0_g0_09:56:241
121750440irq/30-eth0_g0_1219-21kworker/1:209:31:461
121750440irq/30-eth0_g0_121ksoftirqd/110:27:501
121650440irq/29-eth0_g0_121ksoftirqd/112:14:301
121750430irq/30-eth0_g0_1219-21kworker/1:211:52:471
121650430irq/29-eth0_g0_121ksoftirqd/108:44:341
121750420irq/30-eth0_g0_121ksoftirqd/112:25:351
121750420irq/30-eth0_g0_121ksoftirqd/109:49:351
121750420irq/30-eth0_g0_121ksoftirqd/108:14:411
121650420irq/29-eth0_g0_2078-21/usr/sbin/munin07:04:390
121650420irq/29-eth0_g0_13-21kworker/0:110:49:310
121650420irq/29-eth0_g0_121ksoftirqd/111:59:371
121650420irq/29-eth0_g0_121ksoftirqd/110:59:341
121750410irq/30-eth0_g0_121ksoftirqd/107:59:381
121650410irq/29-eth0_g0_13-21kworker/0:111:35:370
121410ksoftirqd/1121750irq/30-eth0_g0_11:49:390
181962400sleep0121750irq/30-eth0_g0_10:19:470
121750400irq/30-eth0_g0_154602sleep112:22:471
121750400irq/30-eth0_g0_1219-21kworker/1:212:38:221
121750400irq/30-eth0_g0_1219-21kworker/1:211:31:091
121750400irq/30-eth0_g0_1219-21kworker/1:211:09:591
121750400irq/30-eth0_g0_1219-21kworker/1:209:41:241
121750400irq/30-eth0_g0_1219-21kworker/1:209:22:021
121750400irq/30-eth0_g0_121ksoftirqd/111:21:191
121750400irq/30-eth0_g0_121ksoftirqd/111:06:471
121750400irq/30-eth0_g0_121ksoftirqd/110:39:291
121650400irq/29-eth0_g0_2178-21unixbench_multi09:14:411
121650400irq/29-eth0_g0_2178-21unixbench_multi09:14:411
121650400irq/29-eth0_g0_13-21kworker/0:112:27:300
121650400irq/29-eth0_g0_13-21kworker/0:111:33:230
121650400irq/29-eth0_g0_121ksoftirqd/111:34:331
121650400irq/29-eth0_g0_121ksoftirqd/107:54:341
121650400irq/29-eth0_g0_0-21swapper/011:59:410
121400ksoftirqd/1121750irq/30-eth0_g0_10:36:290
57592390sleep0121650irq/29-eth0_g0_11:43:570
121750390irq/30-eth0_g0_32626-21diskmemload10:47:281
121750390irq/30-eth0_g0_14458-21unixbench_singl10:04:451
121650390irq/29-eth0_g0_13-21kworker/0:112:05:550
121650390irq/29-eth0_g0_13-21kworker/0:110:40:280
121650390irq/29-eth0_g0_13-21kworker/0:109:40:460
121650390irq/29-eth0_g0_121ksoftirqd/112:32:051
121650390irq/29-eth0_g0_121ksoftirqd/111:46:251
121650390irq/29-eth0_g0_121ksoftirqd/111:46:251
121650390irq/29-eth0_g0_121ksoftirqd/108:34:191
121650390irq/29-eth0_g0_0-21swapper/007:15:470
322222380sleep0121650irq/29-eth0_g0_11:19:310
121750380irq/30-eth0_g0_1219-21kworker/1:211:26:241
121750380irq/30-eth0_g0_1219-21kworker/1:210:29:591
121750380irq/30-eth0_g0_1219-21kworker/1:210:10:131
121750380irq/30-eth0_g0_121ksoftirqd/109:28:521
121750380irq/30-eth0_g0_121ksoftirqd/109:28:521
121750380irq/30-eth0_g0_121ksoftirqd/107:22:301
121750380irq/30-eth0_g0_11066-21ntp_offset07:39:371
121750380irq/30-eth0_g0_0-21swapper/111:14:331
121650380irq/29-eth0_g0_8353-21df_abs07:29:310
121650380irq/29-eth0_g0_8353-21df_abs07:29:310
121650380irq/29-eth0_g0_31187-21latency11:14:340
121650380irq/29-eth0_g0_27793-21wc10:59:390
121650380irq/29-eth0_g0_1964-21runrttasks07:25:450
121650380irq/29-eth0_g0_13804-21unixbench_singl07:49:410
121650380irq/29-eth0_g0_13-21kworker/0:110:47:090
121650380irq/29-eth0_g0_13-21kworker/0:110:32:320
121650380irq/29-eth0_g0_13-21kworker/0:109:14:180
121650380irq/29-eth0_g0_12656-21unixbench_multi12:09:420
121650380irq/29-eth0_g0_121ksoftirqd/107:34:201
121650380irq/29-eth0_g0_121ksoftirqd/107:34:201
121650380irq/29-eth0_g0_11651-21chrt09:54:350
121650380irq/29-eth0_g0_0-21swapper/109:34:411
121380ksoftirqd/1121750irq/30-eth0_g0_10:19:080
121380ksoftirqd/1121750irq/30-eth0_g0_10:19:080
121750370irq/30-eth0_g0_1219-21kworker/1:212:12:421
121750370irq/30-eth0_g0_1219-21kworker/1:211:56:111
121750370irq/30-eth0_g0_1219-21kworker/1:210:56:301
121750370irq/30-eth0_g0_1219-21kworker/1:210:02:271
121750370irq/30-eth0_g0_0-21swapper/111:43:501
121650370irq/29-eth0_g0_27815-21/usr/sbin/munin08:49:380
121650370irq/29-eth0_g0_2657-21latency_hist09:19:180
121650370irq/29-eth0_g0_2657-21latency_hist09:19:180
121650370irq/29-eth0_g0_22884-21ls08:29:200
121650370irq/29-eth0_g0_1964-21runrttasks07:44:300
121650370irq/29-eth0_g0_1964-21runrttasks07:44:300
121650370irq/29-eth0_g0_18045-21munin-run12:34:190
121650370irq/29-eth0_g0_17179-21ntp_offset08:04:360
121650370irq/29-eth0_g0_13-21kworker/0:109:51:400
121650370irq/29-eth0_g0_121ksoftirqd/109:46:051
121650370irq/29-eth0_g0_0-21swapper/011:45:200
121650370irq/29-eth0_g0_0-21swapper/011:45:200
121750360irq/30-eth0_g0_2722-21grep07:04:401
121650360irq/29-eth0_g0_9565-21unixbench_singl09:44:420
121650360irq/29-eth0_g0_30894-21unixbench_multi08:59:390
121650360irq/29-eth0_g0_31ksoftirqd/007:42:180
121650360irq/29-eth0_g0_29194-21df_inode08:54:310
121650360irq/29-eth0_g0_20712-21latency08:19:330
121650360irq/29-eth0_g0_1964-21runrttasks10:23:031
121650360irq/29-eth0_g0_1964-21runrttasks08:15:090
121650360irq/29-eth0_g0_1964-21runrttasks07:20:520
121650360irq/29-eth0_g0_18274-21df_abs12:34:320
121650360irq/29-eth0_g0_15632-21df_abs07:59:300
121650360irq/29-eth0_g0_15211-21ethtool10:09:310
121650360irq/29-eth0_g0_13227-21/usr/sbin/munin09:59:410
121650360irq/29-eth0_g0_13-21kworker/0:111:59:100
121650360irq/29-eth0_g0_13-21kworker/0:111:04:400
121650360irq/29-eth0_g0_0-21swapper/010:06:390
121650360irq/29-eth0_g0_0-21swapper/009:29:160
121650360irq/29-eth0_g0_0-21swapper/009:29:160
3226993523cyclictest8168-21grep07:29:201
121750350irq/30-eth0_g0_1219-21kworker/1:210:50:181
121750350irq/30-eth0_g0_0-21swapper/110:17:091
121750350irq/30-eth0_g0_0-21swapper/110:17:091
121650350irq/29-eth0_g0_6729-21missed_timers09:34:350
121650350irq/29-eth0_g0_3607-21memory07:09:330
121650350irq/29-eth0_g0_30622-21taskset11:11:460
121650350irq/29-eth0_g0_27723-21munin-run08:49:190
121650350irq/29-eth0_g0_25494-21df_abs08:39:310
121650350irq/29-eth0_g0_23147-21iostat08:29:330
121650350irq/29-eth0_g0_20873-21open_files08:19:361
121650350irq/29-eth0_g0_1964-21runrttasks07:37:200
121650350irq/29-eth0_g0_13-21kworker/0:112:14:260
121650340irq/29-eth0_g0_31895-21open_files09:04:360
121650340irq/29-eth0_g0_24200-21df08:34:290
121650340irq/29-eth0_g0_14810-21chrt07:54:390
3226993322cyclictest1964-21runrttasks09:06:061
3226993319cyclictest3706-21grep07:09:351
121750330irq/30-eth0_g0_24405-21latency08:34:331
3226993219cyclictest28370-21sendmail_mailtr08:49:391
3226993219cyclictest21990-21missed_timers08:24:331
121750320irq/30-eth0_g0_1964-21runrttasks09:02:141
121750310irq/30-eth0_g0_4838-21missed_timers07:14:341
121750310irq/30-eth0_g0_29251-21awk08:54:321
121750310irq/30-eth0_g0_26075-21unixbench_singl08:39:411
121750310irq/30-eth0_g0_12188-21memory07:44:351
121750310irq/30-eth0_g0_12188-21memory07:44:351
3226993019cyclictest10048-21ls07:34:391
322699301cyclictest121750irq/30-eth0_g0_08:04:391
121750300irq/30-eth0_g0_18699-21unixbench_singl08:09:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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