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2026-07-11 - 03:35

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 Sat Jul 11, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
690821440sleep0121650irq/29-eth0_g0_21:39:190
1211100ksoftirqd/1121750irq/30-eth0_g0_23:47:141
1211100ksoftirqd/1121750irq/30-eth0_g0_23:47:141
121770ksoftirqd/1121750irq/30-eth0_g0_21:25:461
265022700sleep0121650irq/29-eth0_g0_22:58:500
265022700sleep0121650irq/29-eth0_g0_22:58:500
240262700sleep0121750irq/30-eth0_g0_22:48:380
121670ksoftirqd/1121750irq/30-eth0_g0_00:05:440
121650ksoftirqd/1121750irq/30-eth0_g0_23:58:500
121600ksoftirqd/1315372sleep023:20:170
121570ksoftirqd/1121750irq/30-eth0_g0_19:08:241
121570ksoftirqd/1121650irq/29-eth0_g0_00:23:240
121560ksoftirqd/1121750irq/30-eth0_g0_23:15:311
121560ksoftirqd/1121750irq/30-eth0_g0_22:05:551
121560ksoftirqd/1121750irq/30-eth0_g0_21:44:191
121750550irq/30-eth0_g0_121ksoftirqd/122:08:241
158399542cyclictest0-21swapper/123:53:221
1583995232cyclictest31145-21/usr/sbin/munin21:08:131
158399521cyclictest3374-21uname23:38:171
158399521cyclictest1964-21runrttasks00:01:071
158399521cyclictest12102-21taskset00:13:191
158399511cyclictest4671-21/usr/sbin/munin19:18:231
158399511cyclictest3945-21cat21:28:201
158399511cyclictest284142sleep123:08:161
158399511cyclictest22866-21cat20:33:181
158399502cyclictest4873-21cpu21:33:141
158399501cyclictest32312-21proc_pri23:23:201
191582490sleep0121650irq/29-eth0_g0_20:18:170
158399491cyclictest92922sleep119:38:161
158399491cyclictest92922sleep119:38:161
158399491cyclictest1964-21runrttasks19:34:371
158399491cyclictest1964-21runrttasks19:34:371
158399491cyclictest146942sleep100:23:221
121750490irq/30-eth0_g0_121ksoftirqd/122:58:231
121750490irq/30-eth0_g0_121ksoftirqd/122:58:231
121490ksoftirqd/1121750irq/30-eth0_g0_00:32:261
121490ksoftirqd/1121750irq/30-eth0_g0_00:12:000
158399482cyclictest10475-21grep21:53:241
158399481cyclictest31053-21diskmemload22:28:171
158399481cyclictest21449-21taskset20:28:151
158399481cyclictest13483-21/usr/sbin/munin00:18:221
158399481cyclictest10794-21cat00:08:161
158399481cyclictest0-21swapper/120:43:241
121750480irq/30-eth0_g0_1219-21kworker/1:223:48:181
121650480irq/29-eth0_g0_158399cyclictest21:38:201
121480ksoftirqd/1121650irq/29-eth0_g0_21:49:430
158399471cyclictest247872sleep122:53:171
158399471cyclictest0-21swapper/119:53:231
121650470irq/29-eth0_g0_158399cyclictest00:03:201
121470ksoftirqd/1121750irq/30-eth0_g0_22:28:420
1583994629cyclictest0-21swapper/120:23:031
158399462cyclictest27370-21/usr/sbin/munin20:53:031
158399461cyclictest19703-21df_abs22:33:141
158399461cyclictest1964-21runrttasks23:28:201
158399461cyclictest0-21swapper/122:44:481
1583994517cyclictest2109-21lldpd20:43:041
158399451cyclictest172032sleep100:33:231
158399451cyclictest0-21swapper/122:41:511
158399451cyclictest0-21swapper/121:06:351
121750450irq/30-eth0_g0_158399cyclictest21:13:201
121750450irq/30-eth0_g0_158399cyclictest21:13:201
121750450irq/30-eth0_g0_121ksoftirqd/119:48:301
121650450irq/29-eth0_g0_158399cyclictest22:26:091
158399441cyclictest0-21swapper/120:02:341
121750440irq/30-eth0_g0_121ksoftirqd/122:48:181
121750440irq/30-eth0_g0_121ksoftirqd/121:51:521
121650440irq/29-eth0_g0_29813-21ntp_states23:13:210
121650440irq/29-eth0_g0_158399cyclictest22:23:001
121440ksoftirqd/1121750irq/30-eth0_g0_23:46:250
121440ksoftirqd/1121750irq/30-eth0_g0_23:46:250
121440ksoftirqd/1121750irq/30-eth0_g0_20:13:231
121750430irq/30-eth0_g0_121ksoftirqd/123:19:041
121750430irq/30-eth0_g0_121ksoftirqd/122:13:481
121750430irq/30-eth0_g0_121ksoftirqd/121:59:471
121650430irq/29-eth0_g0_5905-21missed_timers23:48:180
121650430irq/29-eth0_g0_1580-21taskset19:08:030
158399421cyclictest0-21swapper/120:24:301
121750420irq/30-eth0_g0_158399cyclictest23:03:231
121750420irq/30-eth0_g0_158399cyclictest23:03:231
121750420irq/30-eth0_g0_121ksoftirqd/121:21:441
121650410irq/29-eth0_g0_13-21kworker/0:123:09:090
121650410irq/29-eth0_g0_13-21kworker/0:122:10:280
121650410irq/29-eth0_g0_13-21kworker/0:121:37:270
121650410irq/29-eth0_g0_13-21kworker/0:100:14:390
119732410sleep0121650irq/29-eth0_g0_22:01:070
158399400cyclictest0-21swapper/119:43:531
121750400irq/30-eth0_g0_1219-21kworker/1:223:35:461
121750400irq/30-eth0_g0_1009-21timerandwakeup19:03:231
121650400irq/29-eth0_g0_13-21kworker/0:123:40:370
121650400irq/29-eth0_g0_13-21kworker/0:122:54:480
121650400irq/29-eth0_g0_13-21kworker/0:122:43:040
121650400irq/29-eth0_g0_13-21kworker/0:100:28:150
121650400irq/29-eth0_g0_100142irqstats21:53:160
121650400irq/29-eth0_g0_0-21swapper/023:04:140
121650400irq/29-eth0_g0_0-21swapper/023:04:140
121400ksoftirqd/1121750irq/30-eth0_g0_22:35:210
121400ksoftirqd/1121750irq/30-eth0_g0_21:23:580
121650390irq/29-eth0_g0_15149-21ps22:13:220
121650390irq/29-eth0_g0_13-21kworker/0:123:37:220
121650390irq/29-eth0_g0_13-21kworker/0:122:25:200
121650390irq/29-eth0_g0_13-21kworker/0:122:05:070
158399381cyclictest29222-21fgrep20:58:231
121650380irq/29-eth0_g0_13-21kworker/0:123:26:480
121650380irq/29-eth0_g0_13-21kworker/0:121:22:560
121650380irq/29-eth0_g0_13-21kworker/0:121:14:490
121650380irq/29-eth0_g0_13-21kworker/0:121:14:490
121650370irq/29-eth0_g0_4174-21rt-features21:28:250
121650370irq/29-eth0_g0_13-21kworker/0:121:46:260
121650370irq/29-eth0_g0_13-21kworker/0:100:18:150
158399362cyclictest16656-21/usr/sbin/munin20:08:221
158399361cyclictest3607-21grep19:13:241
121650360irq/29-eth0_g0_13-21kworker/0:123:53:550
121650360irq/29-eth0_g0_13-21kworker/0:123:31:100
121650360irq/29-eth0_g0_13-21kworker/0:121:08:420
158399351cyclictest1964-21runrttasks19:30:511
158399351cyclictest15514-21cat20:03:191
121650350irq/29-eth0_g0_20774-21unixbench_singl20:23:250
121650350irq/29-eth0_g0_13-21kworker/0:122:18:050
121650350irq/29-eth0_g0_13-21kworker/0:100:33:420
121650350irq/29-eth0_g0_10248-21cat19:43:030
121650350irq/29-eth0_g0_10248-21cat19:43:030
121650350irq/29-eth0_g0_0-21swapper/022:41:000
799340migration/027378-21latency_hist20:53:030
158399342cyclictest5565-21/usr/sbin/munin19:23:171
158399341cyclictest28034-21timerandwakeup20:53:231
121650340irq/29-eth0_g0_6979-21/usr/sbin/munin19:28:210
121650340irq/29-eth0_g0_17079-21unixbench_multi20:08:300
121650340irq/29-eth0_g0_12045-21fgrep19:48:230
121750330irq/30-eth0_g0_158299cyclictest19:58:220
121650330irq/29-eth0_g0_8123-21/usr/sbin/munin19:33:180
121650330irq/29-eth0_g0_8123-21/usr/sbin/munin19:33:180
121650330irq/29-eth0_g0_4217-21df_abs19:18:150
121650330irq/29-eth0_g0_23311-21runrttasks20:33:440
121650330irq/29-eth0_g0_22420-21runrttasks20:32:390
121650320irq/29-eth0_g0_6266-21runrttasks19:25:150
121650320irq/29-eth0_g0_27755-21/usr/sbin/munin20:53:180
121650320irq/29-eth0_g0_18774-21runrttasks20:18:020
121650320irq/29-eth0_g0_13263-21rt-features19:53:220
121650320irq/29-eth0_g0_11035-21runrttasks19:43:350
121650320irq/29-eth0_g0_0-21swapper/019:13:210
121750310irq/30-eth0_g0_1673-21/usr/sbin/munin19:08:150
121650310irq/29-eth0_g0_25647-21unixbench_multi20:43:240
121310ksoftirqd/1121750irq/30-eth0_g0_21:05:400
121650300irq/29-eth0_g0_0-21swapper/020:58:240
121650300irq/29-eth0_g0_0-21swapper/020:07:580
121650290irq/29-eth0_g0_0-21swapper/020:38:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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