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2025-11-04 - 11:50

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 Tue Nov 04, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
575621000sleep1121550irq/29-eth0_g0_22:13:141
121730ksoftirqd/115572sleep000:09:250
121700ksoftirqd/1121650irq/30-eth0_g0_19:10:371
63942590chrt121650irq/30-eth0_g0_00:28:301
70502550sleep0121550irq/29-eth0_g0_22:19:040
121540ksoftirqd/1121650irq/30-eth0_g0_22:26:221
121540ksoftirqd/1121650irq/30-eth0_g0_22:26:221
177242510sleep1121650irq/30-eth0_g0_23:00:171
121500ksoftirqd/1121650irq/30-eth0_g0_21:23:351
121550460irq/29-eth0_g0_25525-21/usr/sbin/munin21:20:100
121460ksoftirqd/1121650irq/30-eth0_g0_23:56:321
121460ksoftirqd/1121650irq/30-eth0_g0_22:17:061
121460ksoftirqd/1121650irq/30-eth0_g0_21:14:291
121460ksoftirqd/1121650irq/30-eth0_g0_21:14:291
121460ksoftirqd/1121650irq/30-eth0_g0_00:00:010
121650450irq/30-eth0_g0_470-21kworker/1:122:47:531
121650450irq/30-eth0_g0_121ksoftirqd/100:00:071
121550450irq/29-eth0_g0_24633-21memory19:05:000
121550450irq/29-eth0_g0_13745-21/usr/sbin/munin22:45:050
121450ksoftirqd/1121650irq/30-eth0_g0_23:54:401
121450ksoftirqd/1121650irq/30-eth0_g0_00:13:431
121450ksoftirqd/1121550irq/29-eth0_g0_22:33:281
121450ksoftirqd/1121550irq/29-eth0_g0_21:57:220
121550440irq/29-eth0_g0_1955-21runrttasks21:48:480
121440ksoftirqd/1121650irq/30-eth0_g0_21:26:460
121440ksoftirqd/1121550irq/29-eth0_g0_23:48:381
218652430sleep0121550irq/29-eth0_g0_23:19:510
121650430irq/30-eth0_g0_470-21kworker/1:123:07:431
121650430irq/30-eth0_g0_470-21kworker/1:100:39:401
121650430irq/30-eth0_g0_470-21kworker/1:100:05:311
121550430irq/29-eth0_g0_31ksoftirqd/023:10:270
121550430irq/29-eth0_g0_10033-21ntp_kernel_err22:30:050
121430ksoftirqd/1121650irq/30-eth0_g0_23:24:480
121430ksoftirqd/1121550irq/29-eth0_g0_22:03:521
121430ksoftirqd/1121550irq/29-eth0_g0_21:15:300
121430ksoftirqd/1121550irq/29-eth0_g0_19:21:331
121650420irq/30-eth0_g0_470-21kworker/1:123:23:191
121650420irq/30-eth0_g0_470-21kworker/1:122:50:421
121650420irq/30-eth0_g0_470-21kworker/1:122:42:441
121550420irq/29-eth0_g0_31ksoftirqd/022:19:580
121550420irq/29-eth0_g0_2090-21ntpq00:10:050
121420ksoftirqd/1121650irq/30-eth0_g0_21:43:020
121420ksoftirqd/1121550irq/29-eth0_g0_23:18:461
121420ksoftirqd/1121550irq/29-eth0_g0_21:37:211
121650410irq/30-eth0_g0_24880-21wc19:05:061
121550410irq/29-eth0_g0_31ksoftirqd/023:43:240
121550410irq/29-eth0_g0_13-21kworker/0:122:00:170
121550410irq/29-eth0_g0_121ksoftirqd/123:29:490
121410ksoftirqd/1121650irq/30-eth0_g0_22:55:380
2548699401cyclictest4838-21unixbench_singl00:20:081
121650400irq/30-eth0_g0_470-21kworker/1:121:52:291
121650400irq/30-eth0_g0_3156-21iostat00:15:001
121550400irq/29-eth0_g0_31ksoftirqd/022:12:410
121550400irq/29-eth0_g0_121ksoftirqd/122:41:220
121550400irq/29-eth0_g0_0-21swapper/020:30:060
121400ksoftirqd/1121650irq/30-eth0_g0_22:05:500
121400ksoftirqd/1121650irq/30-eth0_g0_20:09:120
121400ksoftirqd/1121550irq/29-eth0_g0_21:56:461
121400ksoftirqd/1121550irq/29-eth0_g0_21:42:541
2548699391cyclictest27038-21cat23:39:591
121650390irq/30-eth0_g0_121ksoftirqd/123:39:361
121550390irq/29-eth0_g0_4783-21grep00:20:080
121550390irq/29-eth0_g0_31ksoftirqd/022:39:240
121550390irq/29-eth0_g0_13-21kworker/0:123:54:540
121550390irq/29-eth0_g0_13-21kworker/0:122:52:070
121550390irq/29-eth0_g0_13-21kworker/0:122:26:150
121550390irq/29-eth0_g0_13-21kworker/0:122:26:150
121550390irq/29-eth0_g0_13-21kworker/0:121:10:380
121550390irq/29-eth0_g0_13-21kworker/0:121:10:380
121390ksoftirqd/1121650irq/30-eth0_g0_23:06:300
121390ksoftirqd/1121650irq/30-eth0_g0_21:32:520
121390ksoftirqd/1121650irq/30-eth0_g0_20:37:330
121390ksoftirqd/1121650irq/30-eth0_g0_19:21:160
121390ksoftirqd/1121650irq/30-eth0_g0_00:15:220
121390ksoftirqd/1121550irq/29-eth0_g0_20:48:591
2548699381cyclictest30532-21sed19:29:581
2548699381cyclictest22399-21diskmemload00:30:071
121650380irq/30-eth0_g0_6734-21df_abs20:04:571
121650380irq/30-eth0_g0_470-21kworker/1:122:55:211
121650380irq/30-eth0_g0_470-21kworker/1:121:30:311
121650380irq/30-eth0_g0_121ksoftirqd/123:14:111
121650380irq/30-eth0_g0_121ksoftirqd/121:19:291
121650380irq/30-eth0_g0_0-21swapper/122:23:551
121650380irq/30-eth0_g0_0-21swapper/121:49:111
121550380irq/29-eth0_g0_421-21timerandwakeup21:50:070
121550380irq/29-eth0_g0_31ksoftirqd/023:36:490
121550380irq/29-eth0_g0_28537-21find23:45:070
121550380irq/29-eth0_g0_25882-21missed_timers19:10:040
121550380irq/29-eth0_g0_1955-21runrttasks23:00:160
121550380irq/29-eth0_g0_16502-21df20:44:580
121550380irq/29-eth0_g0_13-21kworker/0:123:54:420
121550380irq/29-eth0_g0_13-21kworker/0:100:31:490
121380ksoftirqd/1121650irq/30-eth0_g0_00:25:120
2548699372cyclictest17857-21cat20:50:031
2548699371cyclictest94202sleep120:15:041
2548699371cyclictest25459-21cat23:34:451
2548699371cyclictest15088-21grep20:39:451
121650370irq/30-eth0_g0_470-21kworker/1:122:07:351
121650370irq/30-eth0_g0_470-21kworker/1:121:29:061
121650370irq/30-eth0_g0_121ksoftirqd/122:35:261
121550370irq/29-eth0_g0_21366-21vmstat23:15:090
121550370irq/29-eth0_g0_19509-21unixbench_singl20:55:070
121550370irq/29-eth0_g0_13-21kworker/0:100:34:570
121550370irq/29-eth0_g0_0-21swapper/020:44:450
121370ksoftirqd/1121650irq/30-eth0_g0_23:24:491
121370ksoftirqd/1121550irq/29-eth0_g0_20:09:571
121370ksoftirqd/1121550irq/29-eth0_g0_19:54:401
2548699361cyclictest6071-21grep20:00:091
2548699361cyclictest32353-21unixbench_singl19:35:081
2548699361cyclictest2258-21awk19:45:071
2548699361cyclictest13833-21latency_hist20:34:451
2548699361cyclictest1111-21grep19:40:111
121550360irq/29-eth0_g0_28672-21cpu21:34:580
121550360irq/29-eth0_g0_21228-21cat21:04:460
121550360irq/29-eth0_g0_1955-21runrttasks21:09:010
121550360irq/29-eth0_g0_18282-21head20:50:100
121550360irq/29-eth0_g0_10898-21unixbench_multi20:20:090
2548699351cyclictest4541-21runrttasks19:55:051
2548699351cyclictest271862sleep119:15:031
2548699351cyclictest19484-21grep20:55:071
2548699351cyclictest15684-21fgrep20:40:071
2548699351cyclictest0-21swapper/121:05:001
2548699351cyclictest0-21swapper/121:00:361
2548699351cyclictest0-21swapper/119:27:321
121550350irq/29-eth0_g0_8360-21sendmail_mailtr20:10:060
121550350irq/29-eth0_g0_4788-21unixbench_multi19:55:080
121550350irq/29-eth0_g0_27137-21missed_timers19:15:020
121550350irq/29-eth0_g0_2704-21taskset19:48:180
121550350irq/29-eth0_g0_1955-21runrttasks19:28:110
121550350irq/29-eth0_g0_12662-21cat20:29:450
121350ksoftirqd/1121550irq/29-eth0_g0_20:22:411
121550340irq/29-eth0_g0_30982-21processes19:30:060
121550340irq/29-eth0_g0_1955-21runrttasks19:42:370
121550340irq/29-eth0_g0_1955-21runrttasks19:38:050
25486993318cyclictest12611-21cat20:29:451
121550330irq/29-eth0_g0_6498-21munin-run20:04:450
121550330irq/29-eth0_g0_3557-21unixbench_multi19:50:070
121550330irq/29-eth0_g0_1955-21runrttasks20:16:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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