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2026-06-26 - 16:49

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Fri Jun 26, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1404021150sleep0121650irq/29-eth0_g0_11:03:460
35342890sleep0121650irq/29-eth0_g0_12:33:410
121860ksoftirqd/1121650irq/29-eth0_g0_10:03:530
121760ksoftirqd/1121750irq/30-eth0_g0_07:34:051
248242730sleep1121750irq/30-eth0_g0_09:33:541
121640ksoftirqd/12127899cyclictest11:33:161
52612630chrt121750irq/30-eth0_g0_10:27:191
121600ksoftirqd/1121750irq/30-eth0_g0_11:18:511
16242570sleep1121750irq/30-eth0_g0_10:12:561
121490ksoftirqd/1121750irq/30-eth0_g0_07:13:590
308302480sleep0121750irq/30-eth0_g0_12:12:000
101912480sleep0121650irq/29-eth0_g0_10:47:400
121750470irq/30-eth0_g0_1958-21crond12:15:381
121470ksoftirqd/1121750irq/30-eth0_g0_09:17:201
121470ksoftirqd/1121750irq/30-eth0_g0_09:17:201
121750460irq/30-eth0_g0_1219-21kworker/1:209:58:471
121650450irq/29-eth0_g0_13-21kworker/0:111:28:540
121650450irq/29-eth0_g0_121ksoftirqd/111:58:120
121450ksoftirqd/1121750irq/30-eth0_g0_11:19:300
121750440irq/30-eth0_g0_1219-21kworker/1:211:24:341
121440ksoftirqd/1121750irq/30-eth0_g0_09:43:510
121440ksoftirqd/1121750irq/30-eth0_g0_08:58:550
121750430irq/30-eth0_g0_1219-21kworker/1:212:01:041
121650430irq/29-eth0_g0_1964-21runrttasks10:38:320
121650430irq/29-eth0_g0_1964-21runrttasks10:38:320
121430ksoftirqd/1121650irq/29-eth0_g0_11:07:141
121430ksoftirqd/1121650irq/29-eth0_g0_09:42:380
234142420sleep1121650irq/29-eth0_g0_11:39:491
121750420irq/30-eth0_g0_1219-21kworker/1:212:09:231
121750420irq/30-eth0_g0_1219-21kworker/1:210:50:301
121750410irq/30-eth0_g0_1219-21kworker/1:212:04:251
121750410irq/30-eth0_g0_1219-21kworker/1:209:46:301
121750410irq/30-eth0_g0_121ksoftirqd/110:22:501
121650410irq/29-eth0_g0_31ksoftirqd/010:28:470
121650410irq/29-eth0_g0_1964-21runrttasks07:07:100
121650410irq/29-eth0_g0_13-21kworker/0:111:44:440
121650410irq/29-eth0_g0_13-21kworker/0:110:23:590
121650410irq/29-eth0_g0_121ksoftirqd/112:07:300
121650410irq/29-eth0_g0_121ksoftirqd/111:11:460
121650410irq/29-eth0_g0_121ksoftirqd/111:01:320
121410ksoftirqd/1121750irq/30-eth0_g0_12:22:520
121410ksoftirqd/1121650irq/29-eth0_g0_10:14:291
121410ksoftirqd/1121650irq/29-eth0_g0_09:19:481
2127899401cyclictest26947-21unixbench_singl07:29:031
121750400irq/30-eth0_g0_13576-21chrt10:59:171
121750400irq/30-eth0_g0_1219-21kworker/1:210:29:501
121750400irq/30-eth0_g0_1219-21kworker/1:209:28:261
121650400irq/29-eth0_g0_31ksoftirqd/009:08:390
121650400irq/29-eth0_g0_23753-21latency_hist11:43:390
121650400irq/29-eth0_g0_13-21kworker/0:112:25:190
121650400irq/29-eth0_g0_13-21kworker/0:110:50:260
121650400irq/29-eth0_g0_13-21kworker/0:109:35:550
121650400irq/29-eth0_g0_13-21kworker/0:109:10:440
121400ksoftirqd/120512-21/usr/sbin/munin07:03:561
121400ksoftirqd/1121650irq/29-eth0_g0_12:17:580
2127899399cyclictest15956-21sed11:09:001
2127899391cyclictest25491-21proc_pri07:23:561
2127899391cyclictest23266-21seq07:14:041
2127899391cyclictest1964-21runrttasks08:09:451
121750390irq/30-eth0_g0_1219-21kworker/1:211:47:431
121750390irq/30-eth0_g0_1219-21kworker/1:211:15:381
121750390irq/30-eth0_g0_1219-21kworker/1:210:04:391
121750390irq/30-eth0_g0_1219-21kworker/1:209:13:091
121750390irq/30-eth0_g0_121ksoftirqd/112:34:071
121750390irq/30-eth0_g0_121ksoftirqd/110:34:371
121750390irq/30-eth0_g0_121ksoftirqd/110:34:371
121650390irq/29-eth0_g0_31ksoftirqd/011:23:530
121650390irq/29-eth0_g0_27697-21seq11:58:530
121650390irq/29-eth0_g0_1910-21df_abs10:13:490
121650390irq/29-eth0_g0_13-21kworker/0:112:28:510
121650390irq/29-eth0_g0_13-21kworker/0:110:56:300
121650390irq/29-eth0_g0_13-21kworker/0:109:22:250
121650390irq/29-eth0_g0_121ksoftirqd/110:42:300
121650390irq/29-eth0_g0_10873-21latency_hist08:38:380
121390ksoftirqd/1121750irq/30-eth0_g0_11:38:230
121390ksoftirqd/1121750irq/30-eth0_g0_07:41:170
121390ksoftirqd/1121650irq/29-eth0_g0_10:57:541
2127899382cyclictest2361-21cat08:03:391
2127899382cyclictest1964-21runrttasks08:04:291
2127899382cyclictest1964-21runrttasks08:04:291
2127899381cyclictest18203-21diskmemload09:49:471
2127899381cyclictest18203-21diskmemload09:49:471
150162380sleep0121750irq/30-eth0_g0_08:53:560
121750380irq/30-eth0_g0_1219-21kworker/1:211:54:571
121750380irq/30-eth0_g0_1219-21kworker/1:210:38:541
121750380irq/30-eth0_g0_121ksoftirqd/112:24:281
121750380irq/30-eth0_g0_121ksoftirqd/111:49:111
121750380irq/30-eth0_g0_121ksoftirqd/111:49:111
121750380irq/30-eth0_g0_121ksoftirqd/109:32:591
121650380irq/29-eth0_g0_31ksoftirqd/010:19:160
121650380irq/29-eth0_g0_13-21kworker/0:110:09:350
121650380irq/29-eth0_g0_13-21kworker/0:109:28:490
121650380irq/29-eth0_g0_12184-21/usr/sbin/munin08:43:580
121380ksoftirqd/1121650irq/29-eth0_g0_09:57:111
2127899372cyclictest16303-21ps08:58:571
2127899371cyclictest9836-21sed10:44:011
121750370irq/30-eth0_g0_5517-21grep08:14:001
121750370irq/30-eth0_g0_2553-21irqstats12:28:511
121750370irq/30-eth0_g0_23879-21/usr/sbin/munin07:18:501
121750370irq/30-eth0_g0_121ksoftirqd/112:20:141
121650370irq/29-eth0_g0_5301-21grep08:13:570
121650370irq/29-eth0_g0_30477-21sendmail_mailtr07:44:000
121650370irq/29-eth0_g0_31ksoftirqd/009:55:430
121650370irq/29-eth0_g0_28474-21nfs_client09:48:550
121650370irq/29-eth0_g0_28474-21nfs_client09:48:550
121650370irq/29-eth0_g0_22060-21unixbench_singl07:09:060
121650370irq/29-eth0_g0_1964-21runrttasks10:00:450
121650370irq/29-eth0_g0_1964-21runrttasks08:31:400
121650370irq/29-eth0_g0_1964-21runrttasks08:28:020
121650370irq/29-eth0_g0_13-21kworker/0:111:50:530
121650370irq/29-eth0_g0_13-21kworker/0:111:50:530
121650370irq/29-eth0_g0_13-21kworker/0:109:16:140
121650370irq/29-eth0_g0_13-21kworker/0:109:16:140
121650370irq/29-eth0_g0_0-21swapper/011:13:590
121370ksoftirqd/1121650irq/29-eth0_g0_08:49:001
2127899368cyclictest121750irq/30-eth0_g0_09:43:101
2127899362cyclictest12856-21grep08:44:011
2127899361cyclictest6705-21tail08:19:001
2127899361cyclictest438-21zcat07:54:001
2127899361cyclictest17200-21df_abs09:03:491
121650360irq/29-eth0_g0_6527-21proc_pri08:18:580
121650360irq/29-eth0_g0_32288-21seq07:53:380
121650360irq/29-eth0_g0_27528-21cpu07:33:480
121650360irq/29-eth0_g0_26331-21df_abs07:28:510
121650360irq/29-eth0_g0_24509-21sed07:19:010
121650360irq/29-eth0_g0_11014-21chrt08:38:490
121650360irq/29-eth0_g0_11014-21chrt08:38:490
121360ksoftirqd/1121650irq/29-eth0_g0_09:23:540
2127899351cyclictest31782-21grep07:48:591
2127899351cyclictest31056-21munin-run07:48:391
2127899351cyclictest1964-21runrttasks07:39:501
2127899351cyclictest15245-21seq08:54:001
222322340sleep1121750irq/30-eth0_g0_11:35:191
2127899341cyclictest84922sleep108:28:391
2127899341cyclictest21606-21iostat07:08:571
2127899341cyclictest0-21swapper/108:42:511
2127899341cyclictest0-21swapper/108:42:511
121650340irq/29-eth0_g0_2863-21grep08:03:580
121650340irq/29-eth0_g0_2863-21grep08:03:580
121650340irq/29-eth0_g0_25708-21grep07:23:590
121650340irq/29-eth0_g0_2265-21runrttasks08:03:110
2127899331cyclictest9980-21cat08:33:521
121650330irq/29-eth0_g0_962-21runrttasks07:57:420
121650330irq/29-eth0_g0_1964-21runrttasks08:51:260
121650330irq/29-eth0_g0_0-21swapper/008:09:110
2127899321cyclictest0-21swapper/108:31:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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