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2026-05-29 - 20:58

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 Fri May 29, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211080ksoftirqd/1121750irq/30-eth0_g0_12:09:461
121940ksoftirqd/1121750irq/30-eth0_g0_07:34:421
121940ksoftirqd/1121750irq/30-eth0_g0_07:34:421
121860ksoftirqd/1121650irq/29-eth0_g0_11:32:110
121860ksoftirqd/1121650irq/29-eth0_g0_10:40:530
64202750sleep1121650irq/29-eth0_g0_11:21:411
121710ksoftirqd/1121750irq/30-eth0_g0_08:32:041
121700ksoftirqd/1121750irq/30-eth0_g0_11:07:571
121570ksoftirqd/1121750irq/30-eth0_g0_12:26:001
236002530sleep0121650irq/29-eth0_g0_12:32:110
121500ksoftirqd/1121750irq/30-eth0_g0_10:00:101
231212490sleep0121750irq/30-eth0_g0_10:18:520
121650480irq/29-eth0_g0_0-21swapper/011:55:030
121480ksoftirqd/1121750irq/30-eth0_g0_09:30:020
121480ksoftirqd/1121750irq/30-eth0_g0_09:30:020
121470ksoftirqd/1121650irq/29-eth0_g0_12:15:321
121460ksoftirqd/1121750irq/30-eth0_g0_09:51:331
121460ksoftirqd/1121650irq/29-eth0_g0_11:25:081
121650450irq/29-eth0_g0_31ksoftirqd/010:00:050
121650450irq/29-eth0_g0_12361-21missed_timers09:35:000
121450ksoftirqd/1121750irq/30-eth0_g0_11:00:251
121450ksoftirqd/1121750irq/30-eth0_g0_11:00:251
121440ksoftirqd/1121750irq/30-eth0_g0_10:48:061
121440ksoftirqd/1121750irq/30-eth0_g0_09:11:051
121440ksoftirqd/1121650irq/29-eth0_g0_10:29:581
121750430irq/30-eth0_g0_1219-21kworker/1:212:23:531
121750430irq/30-eth0_g0_1219-21kworker/1:209:42:001
121750430irq/30-eth0_g0_1219-21kworker/1:209:25:491
121650430irq/29-eth0_g0_15366-21cyclictest07:09:450
121750420irq/30-eth0_g0_1219-21kworker/1:212:00:431
121750420irq/30-eth0_g0_1219-21kworker/1:210:36:051
121750420irq/30-eth0_g0_1219-21kworker/1:209:59:171
121750420irq/30-eth0_g0_1219-21kworker/1:209:21:151
121650420irq/29-eth0_g0_121ksoftirqd/112:25:370
121650420irq/29-eth0_g0_121ksoftirqd/111:08:440
1536899411cyclictest20276-21unixbench_multi10:05:071
121750410irq/30-eth0_g0_31ksoftirqd/012:01:520
121750410irq/30-eth0_g0_1219-21kworker/1:210:44:051
121650410irq/29-eth0_g0_31ksoftirqd/011:10:040
121650410irq/29-eth0_g0_31ksoftirqd/010:50:100
121650410irq/29-eth0_g0_13-21kworker/0:112:06:420
121410ksoftirqd/1121750irq/30-eth0_g0_10:34:440
121410ksoftirqd/1121650irq/29-eth0_g0_09:19:141
1536899401cyclictest24307-21chrt12:35:011
121750400irq/30-eth0_g0_1219-21kworker/1:211:48:281
121750400irq/30-eth0_g0_1219-21kworker/1:211:16:031
121750400irq/30-eth0_g0_1219-21kworker/1:209:31:291
121750400irq/30-eth0_g0_1219-21kworker/1:209:31:291
121650400irq/29-eth0_g0_31ksoftirqd/008:35:040
121650400irq/29-eth0_g0_13-21kworker/0:111:24:200
121650400irq/29-eth0_g0_13-21kworker/0:111:03:120
121650400irq/29-eth0_g0_13-21kworker/0:111:03:120
121650400irq/29-eth0_g0_13-21kworker/0:109:58:500
121650400irq/29-eth0_g0_124662sleep011:45:530
121650400irq/29-eth0_g0_0-21swapper/011:50:060
121650400irq/29-eth0_g0_0-21swapper/010:20:060
121400ksoftirqd/1121650irq/29-eth0_g0_11:10:051
1536899392cyclictest18855-21cat07:29:451
121750390irq/30-eth0_g0_1219-21kworker/1:211:38:251
121750390irq/30-eth0_g0_1219-21kworker/1:210:53:411
121750390irq/30-eth0_g0_121ksoftirqd/110:22:021
121750390irq/30-eth0_g0_0-21swapper/109:47:341
121650390irq/29-eth0_g0_13-21kworker/0:112:23:480
121650390irq/29-eth0_g0_13-21kworker/0:111:39:140
121650390irq/29-eth0_g0_13-21kworker/0:109:09:590
121650390irq/29-eth0_g0_121ksoftirqd/109:39:451
121390ksoftirqd/1121750irq/30-eth0_g0_12:35:350
121390ksoftirqd/1121750irq/30-eth0_g0_11:42:540
121390ksoftirqd/1121750irq/30-eth0_g0_10:55:340
121390ksoftirqd/1121750irq/30-eth0_g0_10:39:010
121390ksoftirqd/1121750irq/30-eth0_g0_10:05:510
121390ksoftirqd/1121750irq/30-eth0_g0_09:46:110
121390ksoftirqd/1121750irq/30-eth0_g0_09:24:120
121390ksoftirqd/1121750irq/30-eth0_g0_08:00:590
121390ksoftirqd/1121750irq/30-eth0_g0_08:00:590
121390ksoftirqd/1121750irq/30-eth0_g0_07:57:250
121390ksoftirqd/1121750irq/30-eth0_g0_07:37:330
121390ksoftirqd/1121750irq/30-eth0_g0_07:37:330
15368993825cyclictest1964-21runrttasks07:44:321
15368993825cyclictest1964-21runrttasks07:44:321
1536899381cyclictest25433-21grep08:04:551
121750380irq/30-eth0_g0_15365-21munin-run07:09:451
121750380irq/30-eth0_g0_1219-21kworker/1:211:54:561
121750380irq/30-eth0_g0_1219-21kworker/1:210:28:361
121750380irq/30-eth0_g0_1219-21kworker/1:210:28:361
121750380irq/30-eth0_g0_121ksoftirqd/111:40:221
121750380irq/30-eth0_g0_121ksoftirqd/110:16:511
121750380irq/30-eth0_g0_121ksoftirqd/110:12:351
121650380irq/29-eth0_g0_29611-21runrttasks08:26:351
121650380irq/29-eth0_g0_161012sleep009:50:010
121650380irq/29-eth0_g0_13-21kworker/0:112:12:260
121650380irq/29-eth0_g0_13-21kworker/0:110:48:540
121650380irq/29-eth0_g0_13-21kworker/0:110:26:450
121650380irq/29-eth0_g0_13-21kworker/0:110:26:450
121650380irq/29-eth0_g0_13-21kworker/0:110:11:410
121650380irq/29-eth0_g0_13-21kworker/0:109:25:270
121380ksoftirqd/1121650irq/29-eth0_g0_12:34:261
121380ksoftirqd/1121650irq/29-eth0_g0_08:46:071
121380ksoftirqd/1121650irq/29-eth0_g0_07:13:481
1536899372cyclictest1983-21/usr/sbin/munin07:57:361
1536899371cyclictest86402sleep111:30:071
1536899371cyclictest276372sleep108:15:041
1536899371cyclictest17506-21cat07:20:011
121650370irq/29-eth0_g0_1964-21runrttasks09:05:340
121650370irq/29-eth0_g0_17569-21ntpdc07:20:040
121650370irq/29-eth0_g0_13780-21/usr/sbin/munin09:40:050
121650370irq/29-eth0_g0_13-21kworker/0:111:25:540
121650370irq/29-eth0_g0_13-21kworker/0:111:15:180
121650370irq/29-eth0_g0_0-21swapper/009:16:070
121370ksoftirqd/1121650irq/29-eth0_g0_09:00:261
1536899362cyclictest1964-21runrttasks08:03:181
1536899362cyclictest1964-21runrttasks08:03:181
1536899361cyclictest5292-21wc09:05:061
1536899361cyclictest23034-21sed07:50:021
1536899361cyclictest16616-21seq12:04:551
121650360irq/29-eth0_g0_2388-21df_abs08:54:560
121650360irq/29-eth0_g0_2388-21df_abs08:54:560
121650360irq/29-eth0_g0_22355-21cpu07:49:510
121650360irq/29-eth0_g0_20093-21chrt07:34:460
121650360irq/29-eth0_g0_20093-21chrt07:34:460
121650360irq/29-eth0_g0_13-21kworker/0:112:18:190
121360ksoftirqd/1121650irq/29-eth0_g0_11:52:521
1536899351cyclictest2767-21rt-features08:55:041
1536899351cyclictest2767-21rt-features08:55:041
1536899351cyclictest0-21swapper/108:42:591
121750350irq/30-eth0_g0_31184-21unixbench_singl08:35:051
121750350irq/30-eth0_g0_0-21swapper/110:58:261
121650350irq/29-eth0_g0_315-21timerandwakeup08:45:010
121650350irq/29-eth0_g0_25689-21ntp_offset08:05:000
121650350irq/29-eth0_g0_21038-21chrt07:40:020
121650350irq/29-eth0_g0_21038-21chrt07:40:020
121650350irq/29-eth0_g0_1964-21runrttasks09:00:140
121650350irq/29-eth0_g0_1964-21runrttasks08:42:400
121650350irq/29-eth0_g0_1964-21runrttasks08:18:200
121650350irq/29-eth0_g0_1323-21ls08:49:590
121650340irq/29-eth0_g0_28819-21df08:24:560
121650340irq/29-eth0_g0_1964-21runrttasks08:21:060
121650340irq/29-eth0_g0_15747-21memory07:09:580
1536899331cyclictest0-21swapper/107:45:121
1536899331cyclictest0-21swapper/107:34:531
1536899331cyclictest0-21swapper/107:34:531
1536899331cyclictest0-21swapper/107:18:041
1536899331cyclictest0-21swapper/107:18:041
121650330irq/29-eth0_g0_222142sleep007:49:070
121650330irq/29-eth0_g0_1964-21runrttasks08:31:130
121330ksoftirqd/1121650irq/29-eth0_g0_08:49:551
121650320irq/29-eth0_g0_1964-21runrttasks08:10:540
121650320irq/29-eth0_g0_16952-21taskset07:18:070
121650320irq/29-eth0_g0_16952-21taskset07:18:070
1536899311cyclictest0-21swapper/108:24:121
121650310irq/29-eth0_g0_26699-21runrttasks08:12:031
121650280irq/29-eth0_g0_0-21swapper/007:29:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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