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2026-08-31 - 15:05

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 Mon Aug 31, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211130ksoftirqd/1121750irq/30-eth0_g0_09:21:271
1211040ksoftirqd/1121750irq/30-eth0_g0_08:01:101
121650ksoftirqd/1121750irq/30-eth0_g0_12:21:221
121650ksoftirqd/1121650irq/29-eth0_g0_09:47:401
198192590sleep1121650irq/29-eth0_g0_11:45:141
121550ksoftirqd/1121750irq/30-eth0_g0_10:50:451
182922530sleep0121650irq/29-eth0_g0_11:36:400
121520ksoftirqd/1121750irq/30-eth0_g0_11:55:161
25352510sleep0121750irq/30-eth0_g0_10:33:400
121500ksoftirqd/1121650irq/29-eth0_g0_11:06:331
121500ksoftirqd/1121650irq/29-eth0_g0_09:22:170
121490ksoftirqd/1121750irq/30-eth0_g0_10:58:151
121490ksoftirqd/1121750irq/30-eth0_g0_10:40:321
121490ksoftirqd/1121750irq/30-eth0_g0_10:40:321
121490ksoftirqd/1121650irq/29-eth0_g0_09:07:070
121470ksoftirqd/1121750irq/30-eth0_g0_12:01:491
121470ksoftirqd/1121650irq/29-eth0_g0_12:20:090
204762460sleep0121650irq/29-eth0_g0_09:34:520
121650460irq/29-eth0_g0_1964-21runrttasks07:03:570
121460ksoftirqd/1121650irq/29-eth0_g0_10:54:500
121460ksoftirqd/1121650irq/29-eth0_g0_08:39:351
121460ksoftirqd/1121650irq/29-eth0_g0_08:39:351
121460ksoftirqd/1121650irq/29-eth0_g0_08:07:371
121750450irq/30-eth0_g0_121ksoftirqd/112:26:111
121450ksoftirqd/1121650irq/29-eth0_g0_11:04:211
121450ksoftirqd/1121650irq/29-eth0_g0_10:00:461
121750440irq/30-eth0_g0_1219-21kworker/1:210:31:221
121440ksoftirqd/1121650irq/29-eth0_g0_11:18:291
121650430irq/29-eth0_g0_1964-21runrttasks08:29:100
121430ksoftirqd/1121650irq/29-eth0_g0_10:23:201
121750420irq/30-eth0_g0_1219-21kworker/1:209:15:391
121650420irq/29-eth0_g0_31949-21awk10:21:160
121650420irq/29-eth0_g0_31ksoftirqd/010:39:390
121650420irq/29-eth0_g0_31ksoftirqd/010:39:390
121650420irq/29-eth0_g0_25083-21awk12:06:140
121420ksoftirqd/1121750irq/30-eth0_g0_10:15:241
1624499411cyclictest207932sleep111:47:191
121650410irq/29-eth0_g0_1624399cyclictest11:20:460
121650410irq/29-eth0_g0_121ksoftirqd/109:47:180
121650410irq/29-eth0_g0_0-21swapper/010:45:190
121410ksoftirqd/1121750irq/30-eth0_g0_10:16:561
121410ksoftirqd/1121650irq/29-eth0_g0_08:56:211
121750400irq/30-eth0_g0_1219-21kworker/1:212:10:311
121750400irq/30-eth0_g0_121ksoftirqd/112:18:161
121750400irq/30-eth0_g0_121ksoftirqd/111:24:471
121650400irq/29-eth0_g0_9543-21timerandwakeup11:01:200
121650400irq/29-eth0_g0_31ksoftirqd/009:39:220
121650400irq/29-eth0_g0_1624399cyclictest10:46:170
121650400irq/29-eth0_g0_13-21kworker/0:111:53:530
121650400irq/29-eth0_g0_13-21kworker/0:111:08:120
121650400irq/29-eth0_g0_121ksoftirqd/112:21:150
121400ksoftirqd/1121750irq/30-eth0_g0_09:44:490
121400ksoftirqd/1121650irq/29-eth0_g0_11:34:521
121400ksoftirqd/1121650irq/29-eth0_g0_09:05:321
121400ksoftirqd/1121650irq/29-eth0_g0_09:05:321
190722390sleep0121650irq/29-eth0_g0_07:16:150
16244993910cyclictest0-21swapper/111:27:221
121750390irq/30-eth0_g0_326992sleep108:11:191
121750390irq/30-eth0_g0_1219-21kworker/1:209:37:221
121750390irq/30-eth0_g0_121ksoftirqd/111:37:011
121650390irq/29-eth0_g0_13-21kworker/0:110:29:500
121390ksoftirqd/1121750irq/30-eth0_g0_12:27:040
121390ksoftirqd/1121750irq/30-eth0_g0_12:13:170
121390ksoftirqd/1121750irq/30-eth0_g0_11:42:020
121390ksoftirqd/1121750irq/30-eth0_g0_11:25:150
121390ksoftirqd/1121750irq/30-eth0_g0_10:57:160
121390ksoftirqd/1121750irq/30-eth0_g0_10:18:260
121390ksoftirqd/1121750irq/30-eth0_g0_10:15:220
121390ksoftirqd/1121750irq/30-eth0_g0_10:10:200
121390ksoftirqd/1121750irq/30-eth0_g0_10:01:020
121390ksoftirqd/1121750irq/30-eth0_g0_09:58:090
121390ksoftirqd/1121750irq/30-eth0_g0_09:53:290
121390ksoftirqd/1121750irq/30-eth0_g0_09:30:260
121390ksoftirqd/1121750irq/30-eth0_g0_08:54:080
121390ksoftirqd/1121750irq/30-eth0_g0_08:43:510
121390ksoftirqd/1121750irq/30-eth0_g0_08:34:300
121390ksoftirqd/1121750irq/30-eth0_g0_07:27:530
121390ksoftirqd/1121750irq/30-eth0_g0_07:23:130
121390ksoftirqd/1121750irq/30-eth0_g0_07:08:040
121390ksoftirqd/1121650irq/29-eth0_g0_12:15:211
121390ksoftirqd/1121650irq/29-eth0_g0_08:26:041
121390ksoftirqd/1121650irq/29-eth0_g0_07:31:121
117012390sleep0121650irq/29-eth0_g0_08:57:290
1624499387cyclictest2109-21lldpd08:32:541
16244993833cyclictest25436-21sendmail_mailqu07:41:201
1624499381cyclictest19495-21/usr/sbin/munin07:16:221
121750380irq/30-eth0_g0_31ksoftirqd/011:32:250
121750380irq/30-eth0_g0_0-21swapper/110:52:461
121650380irq/29-eth0_g0_26533-21taskset07:46:180
121650380irq/29-eth0_g0_1964-21runrttasks12:04:240
121650380irq/29-eth0_g0_13-21kworker/0:112:31:350
121650380irq/29-eth0_g0_13-21kworker/0:111:58:590
121650380irq/29-eth0_g0_13-21kworker/0:111:49:370
121650380irq/29-eth0_g0_13-21kworker/0:109:16:130
121650380irq/29-eth0_g0_121ksoftirqd/111:28:370
121650380irq/29-eth0_g0_0-21swapper/007:16:000
121650380irq/29-eth0_g0_0-21swapper/007:16:000
121380ksoftirqd/1121750irq/30-eth0_g0_09:12:230
121380ksoftirqd/1121750irq/30-eth0_g0_08:48:060
121380ksoftirqd/1121750irq/30-eth0_g0_07:52:480
1624499372cyclictest3485-21grep08:26:001
1624499372cyclictest22284-21ntp_offset09:41:171
1624499371cyclictest88012sleep108:46:161
1624499371cyclictest28062-21unixbench_singl07:51:221
1624499371cyclictest24150-21proc_pri07:36:191
1624499371cyclictest20712-21grep07:21:231
1624499371cyclictest13224-21diskmemload12:31:101
121750370irq/30-eth0_g0_1219-21kworker/1:211:11:561
121750370irq/30-eth0_g0_1219-21kworker/1:209:27:441
121750370irq/30-eth0_g0_1219-21kworker/1:209:06:161
121750370irq/30-eth0_g0_121ksoftirqd/109:32:291
121750370irq/30-eth0_g0_0-21swapper/110:26:171
121750370irq/30-eth0_g0_0-21swapper/109:51:551
121650370irq/29-eth0_g0_13-21kworker/0:111:11:470
121650370irq/29-eth0_g0_121ksoftirqd/110:05:181
1624499362cyclictest28107-21awk10:06:121
1624499361cyclictest26779-21grep07:46:231
1624499361cyclictest0-21swapper/107:56:201
121750360irq/30-eth0_g0_1219-21kworker/1:211:57:171
121750360irq/30-eth0_g0_0-21swapper/109:20:131
121650360irq/29-eth0_g0_30995-21chrt08:06:000
121650360irq/29-eth0_g0_22952-21processes07:31:200
121650360irq/29-eth0_g0_1964-21runrttasks08:25:470
121650360irq/29-eth0_g0_1964-21runrttasks08:11:580
121650360irq/29-eth0_g0_1964-21runrttasks07:59:480
121650360irq/29-eth0_g0_1964-21runrttasks07:45:140
121360ksoftirqd/1121750irq/30-eth0_g0_08:09:520
1624499351cyclictest4058-21cpu10:41:111
1624499351cyclictest216322sleep107:26:181
1624499351cyclictest17929-21nfs_client07:11:161
1624499351cyclictest17929-21nfs_client07:11:161
1624499351cyclictest16729-21grep07:06:171
121650350irq/29-eth0_g0_6872-21chrt08:38:210
121650350irq/29-eth0_g0_6872-21chrt08:38:210
121650350irq/29-eth0_g0_1964-21runrttasks09:05:270
121650350irq/29-eth0_g0_1964-21runrttasks09:05:270
121650350irq/29-eth0_g0_15964-21runrttasks07:02:541
121650350irq/29-eth0_g0_1343-21memory08:16:150
121350ksoftirqd/1121650irq/29-eth0_g0_08:20:251
1624499341cyclictest7873-21sed08:41:221
121650330irq/29-eth0_g0_0-21swapper/007:36:140
121750320irq/30-eth0_g0_9781-21df_abs08:51:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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