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2026-09-28 - 23:56

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 Sep 28, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236422800sleep1121650irq/29-eth0_g0_10:56:041
121790ksoftirqd/1121750irq/30-eth0_g0_11:32:101
116322790sleep0121650irq/29-eth0_g0_10:08:460
121670ksoftirqd/1121750irq/30-eth0_g0_09:42:470
90442650sleep1121650irq/29-eth0_g0_09:57:101
121630ksoftirqd/1121650irq/29-eth0_g0_10:49:551
49182620sleep0121750irq/30-eth0_g0_11:53:460
49182620sleep0121750irq/30-eth0_g0_11:53:460
42172620sleep1121650irq/29-eth0_g0_09:38:021
247402600sleep1121750irq/30-eth0_g0_08:50:061
121550ksoftirqd/1121750irq/30-eth0_g0_09:14:501
121650540irq/29-eth0_g0_23360-21latency_hist08:44:550
121530ksoftirqd/1121750irq/30-eth0_g0_11:19:151
121510ksoftirqd/13128799cyclictest07:53:041
204552500sleep0121650irq/29-eth0_g0_10:45:050
121490ksoftirqd/1121750irq/30-eth0_g0_12:34:031
121480ksoftirqd/1121750irq/30-eth0_g0_11:37:360
121480ksoftirqd/1121750irq/30-eth0_g0_10:02:341
121480ksoftirqd/1121650irq/29-eth0_g0_12:08:360
121470ksoftirqd/1121750irq/30-eth0_g0_11:02:271
121460ksoftirqd/14702sleep009:22:310
121460ksoftirqd/1121750irq/30-eth0_g0_12:25:541
121460ksoftirqd/1121750irq/30-eth0_g0_12:22:071
121460ksoftirqd/1121750irq/30-eth0_g0_11:35:251
121450ksoftirqd/1121750irq/30-eth0_g0_12:17:241
121450ksoftirqd/1121750irq/30-eth0_g0_11:46:241
121750440irq/30-eth0_g0_1219-21kworker/1:211:51:141
121750440irq/30-eth0_g0_1219-21kworker/1:211:51:141
121440ksoftirqd/1121750irq/30-eth0_g0_11:21:291
121440ksoftirqd/1121750irq/30-eth0_g0_09:23:141
121440ksoftirqd/1121750irq/30-eth0_g0_09:00:120
121750430irq/30-eth0_g0_1219-21kworker/1:209:48:361
121430ksoftirqd/1121750irq/30-eth0_g0_10:51:201
121430ksoftirqd/1121650irq/29-eth0_g0_12:10:151
121750420irq/30-eth0_g0_28872-21sendmail_mailtr09:05:161
121750420irq/30-eth0_g0_121ksoftirqd/109:00:071
121650420irq/29-eth0_g0_364-21irqstats07:10:080
121650420irq/29-eth0_g0_30875-21awk07:00:160
121650420irq/29-eth0_g0_30875-21awk07:00:160
121650420irq/29-eth0_g0_16482-21ntp_states08:15:130
121650420irq/29-eth0_g0_13-21kworker/0:110:10:150
121650420irq/29-eth0_g0_13-21kworker/0:110:10:150
121650420irq/29-eth0_g0_121ksoftirqd/111:19:040
121750410irq/30-eth0_g0_1219-21kworker/1:212:03:521
121750410irq/30-eth0_g0_1219-21kworker/1:210:37:411
121750410irq/30-eth0_g0_1219-21kworker/1:209:34:371
121750410irq/30-eth0_g0_1219-21kworker/1:209:25:231
121750410irq/30-eth0_g0_121ksoftirqd/111:55:461
121650410irq/29-eth0_g0_31ksoftirqd/012:01:540
121650410irq/29-eth0_g0_14952-21grep10:20:170
121650410irq/29-eth0_g0_121ksoftirqd/110:50:180
121410ksoftirqd/1121750irq/30-eth0_g0_11:00:160
121410ksoftirqd/1121750irq/30-eth0_g0_10:19:071
121410ksoftirqd/1121650irq/29-eth0_g0_08:25:161
121650400irq/29-eth0_g0_6367-21df_abs07:35:040
121650400irq/29-eth0_g0_31ksoftirqd/008:10:090
121650400irq/29-eth0_g0_13-21kworker/0:111:59:160
121650400irq/29-eth0_g0_13-21kworker/0:109:55:160
121650400irq/29-eth0_g0_13-21kworker/0:109:16:480
121650400irq/29-eth0_g0_1219-21kworker/1:209:40:571
121650400irq/29-eth0_g0_121ksoftirqd/112:30:170
121650400irq/29-eth0_g0_121ksoftirqd/112:22:540
121400ksoftirqd/1121750irq/30-eth0_g0_12:12:480
3128799397cyclictest121750irq/30-eth0_g0_11:26:531
3128799391cyclictest5212-21df_abs07:30:071
3128799391cyclictest16685-21grep10:29:551
3128799391cyclictest12919-21processes08:00:151
121750390irq/30-eth0_g0_31ksoftirqd/011:32:080
121750390irq/30-eth0_g0_31ksoftirqd/010:34:190
121750390irq/30-eth0_g0_121ksoftirqd/107:55:141
121750390irq/30-eth0_g0_0-21swapper/111:09:271
121650390irq/29-eth0_g0_31ksoftirqd/012:29:350
121650390irq/29-eth0_g0_19884-21uptime10:40:170
121650390irq/29-eth0_g0_13-21kworker/0:109:52:360
121650390irq/29-eth0_g0_121ksoftirqd/108:00:130
121390ksoftirqd/1121750irq/30-eth0_g0_07:34:020
121390ksoftirqd/1121750irq/30-eth0_g0_07:15:340
121750380irq/30-eth0_g0_2126-21lldpd07:08:151
121750380irq/30-eth0_g0_17531-21/usr/sbin/munin08:20:070
121750380irq/30-eth0_g0_1219-21kworker/1:210:42:561
121750380irq/30-eth0_g0_121ksoftirqd/109:51:551
121750380irq/30-eth0_g0_0-21swapper/111:39:551
121750380irq/30-eth0_g0_0-21swapper/109:17:351
121650380irq/29-eth0_g0_31ksoftirqd/011:41:510
121650380irq/29-eth0_g0_23808-21ntp_offset08:45:100
121650380irq/29-eth0_g0_1964-21runrttasks08:53:030
121650380irq/29-eth0_g0_13-21kworker/0:112:18:220
121650380irq/29-eth0_g0_13-21kworker/0:111:48:440
121650380irq/29-eth0_g0_13-21kworker/0:111:21:460
121650380irq/29-eth0_g0_13-21kworker/0:110:39:090
121650380irq/29-eth0_g0_13-21kworker/0:110:16:510
121650380irq/29-eth0_g0_13-21kworker/0:109:39:310
121650380irq/29-eth0_g0_13-21kworker/0:109:11:480
121380ksoftirqd/1121750irq/30-eth0_g0_07:40:160
799370migration/04533-21unixbench_singl07:25:200
3128799372cyclictest2109-21lldpd07:29:171
3128799372cyclictest15511-21tail08:10:171
3128799371cyclictest201482sleep108:30:121
260542370sleep10-21swapper/108:55:081
260542370sleep10-21swapper/108:55:081
121750370irq/30-eth0_g0_1219-21kworker/1:210:30:111
121750370irq/30-eth0_g0_121ksoftirqd/112:05:401
121650370irq/29-eth0_g0_25415-21df11:05:080
121650370irq/29-eth0_g0_219492sleep008:38:060
121650370irq/29-eth0_g0_1964-21runrttasks09:48:060
121650370irq/29-eth0_g0_13844-21if_eth008:05:090
121650370irq/29-eth0_g0_13-21kworker/0:111:26:220
121650370irq/29-eth0_g0_13-21kworker/0:111:12:240
121650370irq/29-eth0_g0_13-21kworker/0:110:26:570
121370ksoftirqd/1121650irq/29-eth0_g0_09:32:420
3128799362cyclictest230342sleep108:41:281
3128799362cyclictest21271-21missed_timers08:35:111
3128799362cyclictest127142sleep110:12:081
3128799362cyclictest127142sleep110:12:081
3128799361cyclictest6558-21latency07:35:071
3128799361cyclictest17768-21ps08:20:121
3128799361cyclictest14829-21sendmail_mailtr10:20:151
3128799361cyclictest140422sleep108:05:131
121650360irq/29-eth0_g0_31ksoftirqd/007:55:060
121650360irq/29-eth0_g0_23371-21find10:55:130
121650360irq/29-eth0_g0_1964-21runrttasks09:25:410
121650360irq/29-eth0_g0_1964-21runrttasks09:05:050
121650360irq/29-eth0_g0_1964-21runrttasks07:06:250
121650360irq/29-eth0_g0_13-21kworker/0:110:04:540
121650360irq/29-eth0_g0_121ksoftirqd/111:14:281
121650360irq/29-eth0_g0_121ksoftirqd/110:05:541
3128799351cyclictest0-21swapper/107:47:301
121750350irq/30-eth0_g0_3820-21latency_hist07:24:561
121650350irq/29-eth0_g0_26425-21mailstats08:55:150
121650350irq/29-eth0_g0_26425-21mailstats08:55:150
121650350irq/29-eth0_g0_20079-21sort08:30:110
121650350irq/29-eth0_g0_1964-21runrttasks08:29:250
121650350irq/29-eth0_g0_1964-21runrttasks07:45:530
121650350irq/29-eth0_g0_10606-21sed07:50:160
121350ksoftirqd/1121650irq/29-eth0_g0_07:10:071
121750340irq/30-eth0_g0_30773-21grep07:00:151
121750340irq/30-eth0_g0_30773-21grep07:00:151
121650340irq/29-eth0_g0_8160-21grep07:40:151
121650340irq/29-eth0_g0_0-21swapper/007:20:090
3128799331cyclictest0-21swapper/108:45:041
121650330irq/29-eth0_g0_2548-21wc07:19:551
121320ksoftirqd/116321-21taskset08:15:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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