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2026-05-27 - 12:26

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
Click here to display the system's profile data or here to proceed to next system.
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 Wed May 27, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312490ksoftirqd/0254222chrt19:05:070
380721680sleep1121750irq/30-eth0_g0_22:00:301
140321190sleep0121750irq/30-eth0_g0_21:51:130
2981221170sleep0121750irq/30-eth0_g0_23:49:270
1211010ksoftirqd/1121750irq/30-eth0_g0_23:12:251
306432730sleep1121750irq/30-eth0_g0_19:25:111
237852680sleep1121750irq/30-eth0_g0_21:10:121
121600ksoftirqd/1121750irq/30-eth0_g0_00:30:061
121520ksoftirqd/1121750irq/30-eth0_g0_23:15:060
121490ksoftirqd/1121750irq/30-eth0_g0_21:36:491
121470ksoftirqd/1121750irq/30-eth0_g0_22:11:581
121460ksoftirqd/1121750irq/30-eth0_g0_23:52:151
121460ksoftirqd/1121750irq/30-eth0_g0_00:08:151
201002450sleep0121650irq/29-eth0_g0_23:09:510
121750450irq/30-eth0_g0_1219-21kworker/1:222:49:201
121440ksoftirqd/1121650irq/29-eth0_g0_22:15:571
44792430sleep0121750irq/30-eth0_g0_00:16:310
121650430irq/29-eth0_g0_1964-21runrttasks23:22:180
121430ksoftirqd/1121650irq/29-eth0_g0_21:20:181
121750420irq/30-eth0_g0_1219-21kworker/1:223:09:081
121750420irq/30-eth0_g0_1219-21kworker/1:223:01:381
121750420irq/30-eth0_g0_1219-21kworker/1:200:39:301
121650420irq/29-eth0_g0_7986-21unixbench_singl00:30:130
121420ksoftirqd/1121650irq/29-eth0_g0_00:12:461
121420ksoftirqd/1121650irq/29-eth0_g0_00:01:501
121750410irq/30-eth0_g0_57972sleep100:22:381
121750410irq/30-eth0_g0_57972sleep100:22:381
121750410irq/30-eth0_g0_26263-21taskset19:09:501
121750410irq/30-eth0_g0_1219-21kworker/1:221:18:571
121650410irq/29-eth0_g0_1964-21runrttasks22:28:440
121650410irq/29-eth0_g0_12985-21/usr/sbin/munin20:25:130
121650410irq/29-eth0_g0_12985-21/usr/sbin/munin20:25:130
121410ksoftirqd/1121650irq/29-eth0_g0_23:20:151
121410ksoftirqd/1121650irq/29-eth0_g0_00:16:311
121650400irq/29-eth0_g0_31ksoftirqd/022:03:400
121650400irq/29-eth0_g0_31ksoftirqd/021:30:070
121650400irq/29-eth0_g0_26006-21missed_timers21:20:060
121650400irq/29-eth0_g0_13-21kworker/0:122:17:300
121650400irq/29-eth0_g0_121ksoftirqd/119:20:111
121650400irq/29-eth0_g0_10534-21df_inode22:30:020
121650400irq/29-eth0_g0_0-21swapper/022:55:130
121650400irq/29-eth0_g0_0-21swapper/021:55:100
121400ksoftirqd/1121750irq/30-eth0_g0_23:59:420
121400ksoftirqd/1121650irq/29-eth0_g0_23:16:591
2627399397cyclictest121750irq/30-eth0_g0_22:53:431
121750390irq/30-eth0_g0_29236-21chrt21:34:361
121750390irq/30-eth0_g0_23147-21diskmemload23:45:031
121750390irq/30-eth0_g0_0-21swapper/123:56:111
121650390irq/29-eth0_g0_31ksoftirqd/022:42:220
121650390irq/29-eth0_g0_31ksoftirqd/020:40:070
121650390irq/29-eth0_g0_1964-21runrttasks22:23:270
121650390irq/29-eth0_g0_13-21kworker/0:123:34:410
121650390irq/29-eth0_g0_121ksoftirqd/121:34:540
121650390irq/29-eth0_g0_121ksoftirqd/100:03:360
121390ksoftirqd/1121750irq/30-eth0_g0_22:10:520
121390ksoftirqd/1121750irq/30-eth0_g0_21:42:290
121390ksoftirqd/1121750irq/30-eth0_g0_19:47:360
121390ksoftirqd/1121750irq/30-eth0_g0_00:37:430
2627399382cyclictest32521-21/usr/sbin/munin19:35:011
2627399381cyclictest13519-21unixbench_singl22:40:121
121750380irq/30-eth0_g0_3960-21latency19:50:061
121750380irq/30-eth0_g0_31241-21/usr/sbin/munin19:30:091
121750380irq/30-eth0_g0_1901-21unixbench_multi19:40:111
121750380irq/30-eth0_g0_1219-21kworker/1:222:22:331
121750380irq/30-eth0_g0_1219-21kworker/1:221:27:171
121750380irq/30-eth0_g0_0-21swapper/122:34:511
121650380irq/29-eth0_g0_31642-21ntp_states19:30:070
121650380irq/29-eth0_g0_29984-21latency_hist19:24:520
121650380irq/29-eth0_g0_2627299cyclictest22:46:140
121650380irq/29-eth0_g0_1964-21runrttasks21:01:450
121650380irq/29-eth0_g0_13-21kworker/0:123:13:030
121650380irq/29-eth0_g0_13-21kworker/0:100:24:000
121650380irq/29-eth0_g0_13-21kworker/0:100:24:000
121380ksoftirqd/1121750irq/30-eth0_g0_23:02:080
121380ksoftirqd/1121750irq/30-eth0_g0_22:06:171
2627399372cyclictest30568-21/usr/sbin/munin21:40:101
2627399372cyclictest11344-21memory20:20:071
2627399371cyclictest281312sleep119:15:101
2627399371cyclictest21259-21ps21:00:111
121750370irq/30-eth0_g0_1219-21kworker/1:223:37:151
121750370irq/30-eth0_g0_1219-21kworker/1:222:57:231
121750370irq/30-eth0_g0_1219-21kworker/1:221:54:331
121750370irq/30-eth0_g0_1219-21kworker/1:200:26:391
121650370irq/29-eth0_g0_282942sleep023:41:020
121650370irq/29-eth0_g0_24463-21unixbench_multi23:25:120
121650370irq/29-eth0_g0_1964-21runrttasks20:46:090
121650370irq/29-eth0_g0_13483-21/usr/sbin/munin20:30:070
121650370irq/29-eth0_g0_13483-21/usr/sbin/munin20:30:070
121650370irq/29-eth0_g0_13-21kworker/0:122:54:300
121370ksoftirqd/124516-21awk23:25:121
121370ksoftirqd/1121650irq/29-eth0_g0_19:10:401
2627399362cyclictest18533-21if_err_eth020:50:041
2627399361cyclictest9737-21cat22:25:121
2627399361cyclictest5467-21zcat19:55:091
2627399361cyclictest25421-21seq23:30:061
2627399361cyclictest12125-21rt-features22:35:091
121750360irq/30-eth0_g0_7152-21chrt20:03:081
121750360irq/30-eth0_g0_2218-21grep21:55:081
121750360irq/30-eth0_g0_16288-21netstat20:40:061
121650360irq/29-eth0_g0_6736-21unixbench_multi00:25:090
121650360irq/29-eth0_g0_1964-21runrttasks20:57:410
121650360irq/29-eth0_g0_1964-21runrttasks20:17:460
121650360irq/29-eth0_g0_1964-21runrttasks20:12:220
121650360irq/29-eth0_g0_1964-21runrttasks19:42:340
121650360irq/29-eth0_g0_1870-21grep00:05:160
121650360irq/29-eth0_g0_13-21kworker/0:121:19:270
121360ksoftirqd/1121750irq/30-eth0_g0_00:09:540
121360ksoftirqd/1121650irq/29-eth0_g0_19:48:341
2627399351cyclictest32430-21unixbench_multi21:45:121
2627399351cyclictest27860-21nfs_client23:40:051
121650350irq/29-eth0_g0_6817-21grep20:00:130
121650350irq/29-eth0_g0_26825-21grep19:10:100
121650350irq/29-eth0_g0_1964-21runrttasks22:39:080
121650350irq/29-eth0_g0_1964-21runrttasks20:35:390
121650350irq/29-eth0_g0_1964-21runrttasks20:35:390
121650350irq/29-eth0_g0_1964-21runrttasks19:36:000
121650350irq/29-eth0_g0_13-21kworker/0:123:54:240
121650350irq/29-eth0_g0_13-21kworker/0:122:08:460
121650350irq/29-eth0_g0_13-21kworker/0:121:47:550
121350ksoftirqd/1121750irq/30-eth0_g0_21:27:480
121350ksoftirqd/1121750irq/30-eth0_g0_19:29:180
2627399342cyclictest7458-21df_abs20:05:031
2627399341cyclictest15266-21sendmail_mailtr20:35:131
2627399341cyclictest15266-21sendmail_mailtr20:35:131
2627399341cyclictest0-21swapper/120:48:371
2627399341cyclictest0-21swapper/120:30:041
2627399341cyclictest0-21swapper/120:30:041
121750340irq/30-eth0_g0_2627299cyclictest21:06:360
121650340irq/29-eth0_g0_5595-21unixbench_multi19:55:110
121650340irq/29-eth0_g0_28271-21unixbench_singl19:15:120
121650340irq/29-eth0_g0_26511-21chrt23:35:050
121650340irq/29-eth0_g0_1964-21runrttasks21:13:260
121650340irq/29-eth0_g0_11347-21chrt20:20:070
121650340irq/29-eth0_g0_0-21swapper/020:09:520
121340ksoftirqd/1121750irq/30-eth0_g0_20:53:220
2627399331cyclictest126042sleep120:25:071
2627399331cyclictest126042sleep120:25:071
2627399331cyclictest0-21swapper/120:59:511
121750330irq/30-eth0_g0_0-21swapper/120:10:101
121650330irq/29-eth0_g0_1964-21runrttasks19:52:380
121750320irq/30-eth0_g0_10244-21ntpq20:15:091
2627399311cyclictest0-21swapper/121:07:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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