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2026-06-07 - 14:55

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 Sun Jun 07, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
772421500sleep0121650irq/29-eth0_g0_09:21:380
2315321070sleep0121650irq/29-eth0_g0_12:34:460
209602880sleep0121750irq/30-eth0_g0_12:27:030
90422850sleep0121650irq/29-eth0_g0_09:27:410
123952670sleep0121750irq/30-eth0_g0_11:52:170
121570ksoftirqd/1121750irq/30-eth0_g0_12:29:401
324752490sleep1121750irq/30-eth0_g0_11:04:141
110812490chrt121750irq/30-eth0_g0_07:24:350
88132470sleep1121650irq/29-eth0_g0_11:38:261
121470ksoftirqd/1121650irq/29-eth0_g0_10:52:510
121750450irq/30-eth0_g0_1219-21kworker/1:211:20:401
121750450irq/30-eth0_g0_1219-21kworker/1:209:11:531
121450ksoftirqd/1121650irq/29-eth0_g0_11:50:581
121450ksoftirqd/1121650irq/29-eth0_g0_07:55:361
121650440irq/29-eth0_g0_31ksoftirqd/011:19:390
121650440irq/29-eth0_g0_18766-21ntp_offset07:54:410
121440ksoftirqd/1121750irq/30-eth0_g0_11:13:560
121650430irq/29-eth0_g0_6732-21unixbench_multi07:04:440
121650430irq/29-eth0_g0_13-21kworker/0:111:00:030
121650430irq/29-eth0_g0_0-21swapper/010:33:060
121650430irq/29-eth0_g0_0-21swapper/010:33:060
121430ksoftirqd/1217202sleep010:19:370
121430ksoftirqd/1121750irq/30-eth0_g0_10:12:280
121430ksoftirqd/1121650irq/29-eth0_g0_12:24:411
121430ksoftirqd/1121650irq/29-eth0_g0_12:05:331
121750420irq/30-eth0_g0_185952sleep112:18:051
121750420irq/30-eth0_g0_1219-21kworker/1:211:46:571
121750420irq/30-eth0_g0_1219-21kworker/1:209:22:581
121650420irq/29-eth0_g0_25751-21zcat10:34:440
121650420irq/29-eth0_g0_25751-21zcat10:34:440
121650420irq/29-eth0_g0_13-21kworker/0:111:59:370
121650420irq/29-eth0_g0_13-21kworker/0:111:17:510
121650420irq/29-eth0_g0_121ksoftirqd/109:51:270
121420ksoftirqd/1121750irq/30-eth0_g0_11:41:450
121420ksoftirqd/1121650irq/29-eth0_g0_12:20:151
121750410irq/30-eth0_g0_1219-21kworker/1:212:10:551
121750410irq/30-eth0_g0_1219-21kworker/1:212:04:001
121750410irq/30-eth0_g0_1219-21kworker/1:210:57:531
121650410irq/29-eth0_g0_31ksoftirqd/009:31:480
121650410irq/29-eth0_g0_132kworker/0:109:41:580
121410ksoftirqd/1121650irq/29-eth0_g0_09:45:151
112022410sleep0121750irq/30-eth0_g0_11:47:410
61392400sleep0121750irq/30-eth0_g0_09:14:440
121750400irq/30-eth0_g0_7241-21munin-run07:09:231
121750400irq/30-eth0_g0_25059-21chrt10:33:381
121750400irq/30-eth0_g0_25059-21chrt10:33:381
121750400irq/30-eth0_g0_1219-21kworker/1:211:14:471
121750400irq/30-eth0_g0_1219-21kworker/1:209:43:451
121750400irq/30-eth0_g0_121ksoftirqd/110:36:111
121750400irq/30-eth0_g0_121ksoftirqd/110:36:111
121750400irq/30-eth0_g0_121ksoftirqd/110:16:071
121750400irq/30-eth0_g0_121ksoftirqd/110:08:141
121750400irq/30-eth0_g0_121ksoftirqd/109:31:271
121650400irq/29-eth0_g0_31ksoftirqd/011:29:570
121650400irq/29-eth0_g0_31ksoftirqd/009:59:430
121650400irq/29-eth0_g0_13114-21df_inode09:44:360
121650400irq/29-eth0_g0_13-21kworker/0:112:29:470
121650400irq/29-eth0_g0_13-21kworker/0:112:18:350
121650400irq/29-eth0_g0_13-21kworker/0:112:10:120
121650400irq/29-eth0_g0_13-21kworker/0:111:34:360
121650400irq/29-eth0_g0_13-21kworker/0:111:05:420
121650400irq/29-eth0_g0_13-21kworker/0:110:42:100
121650400irq/29-eth0_g0_13-21kworker/0:110:27:010
121650400irq/29-eth0_g0_13-21kworker/0:110:19:120
121650400irq/29-eth0_g0_13-21kworker/0:109:57:300
121650400irq/29-eth0_g0_13-21kworker/0:109:57:300
121650400irq/29-eth0_g0_13-21kworker/0:109:37:210
121400ksoftirqd/1121650irq/29-eth0_g0_10:24:521
724499391cyclictest22171-21unixbench_multi10:19:451
121750390irq/30-eth0_g0_2740-21chrt11:14:131
121750390irq/30-eth0_g0_121ksoftirqd/112:36:501
121750390irq/30-eth0_g0_121ksoftirqd/109:49:541
121650390irq/29-eth0_g0_29808-21ntp_kernel_pll_08:39:400
121650390irq/29-eth0_g0_13-21kworker/0:110:58:420
121650390irq/29-eth0_g0_13-21kworker/0:110:44:480
121650390irq/29-eth0_g0_121ksoftirqd/112:21:180
121390ksoftirqd/1121650irq/29-eth0_g0_10:43:081
121390ksoftirqd/1121650irq/29-eth0_g0_08:36:511
121390ksoftirqd/1121650irq/29-eth0_g0_08:06:571
724499382cyclictest22265-21if_eth008:09:371
724499381cyclictest9677-21runrttasks11:39:441
724499381cyclictest9233-21unixbench_singl07:14:461
724499381cyclictest2646-21awk08:59:451
724499381cyclictest15986-21df07:44:351
121750380irq/30-eth0_g0_1219-21kworker/1:211:31:221
121750380irq/30-eth0_g0_1219-21kworker/1:211:06:331
121750380irq/30-eth0_g0_1219-21kworker/1:210:01:591
121750380irq/30-eth0_g0_1219-21kworker/1:209:34:401
121750380irq/30-eth0_g0_1219-21kworker/1:209:25:371
121750380irq/30-eth0_g0_121ksoftirqd/111:54:281
121750380irq/30-eth0_g0_121ksoftirqd/110:53:101
121650380irq/29-eth0_g0_654-21egrep08:54:340
121650380irq/29-eth0_g0_13862-21latency_hist11:59:240
121650380irq/29-eth0_g0_13-21kworker/0:112:05:570
121650380irq/29-eth0_g0_13-21kworker/0:111:26:490
121650380irq/29-eth0_g0_13-21kworker/0:110:04:350
121650380irq/29-eth0_g0_0-21swapper/008:21:370
121380ksoftirqd/1121650irq/29-eth0_g0_07:42:071
121380ksoftirqd/1121650irq/29-eth0_g0_07:34:431
724499371cyclictest6001-21runrttasks09:14:421
724499371cyclictest29727-21sort08:39:381
724499371cyclictest23521-21seq08:14:391
724499371cyclictest20150-21mailstats07:59:441
724499371cyclictest1364-21grep08:54:451
724499371cyclictest13389-21sort07:34:241
121750370irq/30-eth0_g0_1219-21kworker/1:211:29:171
121750370irq/30-eth0_g0_1219-21kworker/1:210:46:391
121750370irq/30-eth0_g0_1219-21kworker/1:210:09:331
121650370irq/29-eth0_g0_26129-21ntp_offset08:24:400
121650370irq/29-eth0_g0_13-21kworker/0:109:10:030
121370ksoftirqd/1121650irq/29-eth0_g0_08:21:131
724499362cyclictest3787-21tail09:04:451
724499361cyclictest0-21swapper/107:49:431
121750360irq/30-eth0_g0_1219-21kworker/1:209:55:321
121750360irq/30-eth0_g0_1219-21kworker/1:209:55:321
121650360irq/29-eth0_g0_31115-21proc_pri08:44:420
121650360irq/29-eth0_g0_22380-21taskset08:09:390
121650360irq/29-eth0_g0_20185-21timerandwakeup07:59:440
121650360irq/29-eth0_g0_10255-21proc_pri07:19:430
724499351cyclictest7865-21zcat07:09:431
724499351cyclictest30914-21cat08:44:381
724499351cyclictest103082sleep107:19:431
121650350irq/29-eth0_g0_9703-21latency_hist07:19:240
121650350irq/29-eth0_g0_28817-21unixbench_multi08:34:450
121650350irq/29-eth0_g0_2436-21processes08:59:420
121650350irq/29-eth0_g0_20833-21/usr/sbin/munin08:04:350
121650350irq/29-eth0_g0_1964-21runrttasks07:45:380
121650350irq/29-eth0_g0_12938-21grep07:29:450
121350ksoftirqd/111684-21chrt07:24:451
121650340irq/29-eth0_g0_7972-21unixbench_multi07:09:450
121650340irq/29-eth0_g0_32537-21unixbench_multi08:49:450
121650340irq/29-eth0_g0_23662-21chrt08:14:410
121650340irq/29-eth0_g0_1964-21runrttasks08:31:500
121650340irq/29-eth0_g0_17747-21cat07:49:440
121650340irq/29-eth0_g0_0-21swapper/007:39:360
724499331cyclictest0-21swapper/108:50:441
121650330irq/29-eth0_g0_3420-21chrt09:04:380
724499321cyclictest0-21swapper/108:24:391
121750320irq/30-eth0_g0_27158-21if_eth008:29:351
121650320irq/29-eth0_g0_14089-21unixbench_multi07:34:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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