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2025-09-16 - 20:54

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Tue Sep 16, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121560ksoftirqd/1398950irq/29-eth0_g0_09:42:000
398950450irq/29-eth0_g0_31ksoftirqd/011:21:090
398950450irq/29-eth0_g0_31ksoftirqd/009:35:210
398950440irq/29-eth0_g0_31ksoftirqd/010:30:290
398950440irq/29-eth0_g0_22885-21kworker/0:212:22:020
398950440irq/29-eth0_g0_22885-21kworker/0:212:03:290
398950440irq/29-eth0_g0_0-21swapper/011:25:260
398950430irq/29-eth0_g0_4733-21df_abs10:45:180
398950430irq/29-eth0_g0_31ksoftirqd/010:24:360
398950430irq/29-eth0_g0_31ksoftirqd/010:20:020
398950430irq/29-eth0_g0_31ksoftirqd/009:01:060
399050420irq/30-eth0_g0_470-21kworker/1:111:04:121
398950420irq/29-eth0_g0_31ksoftirqd/010:51:260
398950420irq/29-eth0_g0_22885-21kworker/0:210:03:470
399050410irq/30-eth0_g0_470-21kworker/1:109:46:071
398950410irq/29-eth0_g0_830-21ls07:00:190
398950410irq/29-eth0_g0_31ksoftirqd/011:41:500
398950410irq/29-eth0_g0_31ksoftirqd/008:35:230
398950410irq/29-eth0_g0_22885-21kworker/0:212:25:200
398950410irq/29-eth0_g0_22885-21kworker/0:211:01:250
398950410irq/29-eth0_g0_22885-21kworker/0:209:12:260
398950410irq/29-eth0_g0_22885-21kworker/0:209:07:470
398950410irq/29-eth0_g0_121ksoftirqd/112:16:390
398950410irq/29-eth0_g0_121ksoftirqd/110:43:560
398950410irq/29-eth0_g0_121ksoftirqd/109:54:050
399050400irq/30-eth0_g0_470-21kworker/1:111:38:381
399050400irq/30-eth0_g0_31ksoftirqd/010:14:300
399050400irq/30-eth0_g0_12514-21unixbench_multi11:30:271
398950400irq/29-eth0_g0_29339-21open_files09:55:250
398950400irq/29-eth0_g0_22885-21kworker/0:212:10:430
398950400irq/29-eth0_g0_22885-21kworker/0:212:05:350
398950400irq/29-eth0_g0_22885-21kworker/0:211:54:580
398950400irq/29-eth0_g0_22885-21kworker/0:211:54:580
398950400irq/29-eth0_g0_22885-21kworker/0:211:18:540
398950400irq/29-eth0_g0_22885-21kworker/0:211:10:350
398950400irq/29-eth0_g0_22885-21kworker/0:210:36:440
398950400irq/29-eth0_g0_22885-21kworker/0:209:25:510
398950400irq/29-eth0_g0_22885-21kworker/0:209:23:530
398950400irq/29-eth0_g0_22885-21kworker/0:209:16:000
121400ksoftirqd/1399050irq/30-eth0_g0_11:55:281
121400ksoftirqd/1399050irq/30-eth0_g0_11:55:281
399050390irq/30-eth0_g0_31ksoftirqd/012:30:240
399050390irq/30-eth0_g0_0-21swapper/111:45:111
398950390irq/29-eth0_g0_22885-21kworker/0:210:07:160
398950390irq/29-eth0_g0_121ksoftirqd/111:46:130
398950390irq/29-eth0_g0_0-21swapper/009:50:060
121390ksoftirqd/1398950irq/29-eth0_g0_10:15:281
121390ksoftirqd/1398950irq/29-eth0_g0_09:10:291
399050380irq/30-eth0_g0_0-21swapper/110:01:541
398950380irq/29-eth0_g0_22885-21kworker/0:211:55:450
398950380irq/29-eth0_g0_22885-21kworker/0:211:55:450
398950380irq/29-eth0_g0_22885-21kworker/0:211:35:470
398950380irq/29-eth0_g0_22885-21kworker/0:210:26:230
398950380irq/29-eth0_g0_22885-21kworker/0:209:30:330
121380ksoftirqd/1398950irq/29-eth0_g0_09:10:061
399050370irq/30-eth0_g0_470-21kworker/1:112:15:481
399050370irq/30-eth0_g0_470-21kworker/1:112:03:281
399050370irq/30-eth0_g0_470-21kworker/1:111:44:011
399050370irq/30-eth0_g0_470-21kworker/1:111:08:361
399050370irq/30-eth0_g0_470-21kworker/1:109:55:201
399050370irq/30-eth0_g0_470-21kworker/1:109:36:201
399050370irq/30-eth0_g0_470-21kworker/1:109:29:381
399050370irq/30-eth0_g0_2841-21unixbench_multi07:10:431
398950370irq/29-eth0_g0_7294-21/usr/sbin/munin07:40:220
398950370irq/29-eth0_g0_22885-21kworker/0:211:09:410
398950370irq/29-eth0_g0_22885-21kworker/0:210:59:420
121370ksoftirqd/1398950irq/29-eth0_g0_11:20:181
121370ksoftirqd/1398950irq/29-eth0_g0_08:00:271
399050360irq/30-eth0_g0_8658-21latency_hist07:50:061
399050360irq/30-eth0_g0_6947-21unixbench_singl07:35:291
399050360irq/30-eth0_g0_470-21kworker/1:112:20:071
399050360irq/30-eth0_g0_470-21kworker/1:112:10:361
399050360irq/30-eth0_g0_470-21kworker/1:110:44:271
399050360irq/30-eth0_g0_470-21kworker/1:110:38:261
399050360irq/30-eth0_g0_470-21kworker/1:110:34:091
399050360irq/30-eth0_g0_470-21kworker/1:110:25:391
399050360irq/30-eth0_g0_470-21kworker/1:110:10:581
399050360irq/30-eth0_g0_1195-21grep07:00:261
399050360irq/30-eth0_g0_0-21swapper/112:26:051
399050360irq/30-eth0_g0_0-21swapper/109:32:041
398950360irq/29-eth0_g0_22885-21kworker/0:211:30:230
398950360irq/29-eth0_g0_0-21swapper/008:15:260
121360ksoftirqd/1398950irq/29-eth0_g0_11:30:061
399050350irq/30-eth0_g0_470-21kworker/1:111:10:171
399050350irq/30-eth0_g0_470-21kworker/1:109:44:381
399050350irq/30-eth0_g0_470-21kworker/1:109:23:011
399050350irq/30-eth0_g0_18209-21unixbench_singl12:05:291
399050350irq/30-eth0_g0_0-21swapper/111:51:061
399050350irq/30-eth0_g0_0-21swapper/111:51:061
399050350irq/30-eth0_g0_0-21swapper/109:16:041
398950350irq/29-eth0_g0_6900-21grep07:35:290
398950350irq/29-eth0_g0_5919-21proc_pri07:30:220
398950350irq/29-eth0_g0_14169-21unixbench_multi08:20:270
398950350irq/29-eth0_g0_14169-21unixbench_multi08:20:270
121350ksoftirqd/1398950irq/29-eth0_g0_10:45:281
399050340irq/30-eth0_g0_6063-21unixbench_multi10:50:281
399050340irq/30-eth0_g0_470-21kworker/1:110:20:201
399050340irq/30-eth0_g0_16649-21unixbench_singl08:35:251
398950340irq/29-eth0_g0_5248-21sort07:25:280
399050330irq/30-eth0_g0_470-21kworker/1:112:32:511
399050330irq/30-eth0_g0_470-21kworker/1:111:15:221
399050330irq/30-eth0_g0_0-21swapper/110:57:501
399050330irq/30-eth0_g0_0-21swapper/108:05:221
398950330irq/29-eth0_g0_8833-21df_abs07:50:190
398950330irq/29-eth0_g0_15709-21mailstats08:30:260
398950330irq/29-eth0_g0_11788-21unixbench_singl08:05:280
132699333cyclictest13557-21/usr/sbin/munin08:20:191
132699333cyclictest13557-21/usr/sbin/munin08:20:191
121330ksoftirqd/1398950irq/29-eth0_g0_08:45:181
121330ksoftirqd/1398950irq/29-eth0_g0_08:45:181
121330ksoftirqd/1398950irq/29-eth0_g0_07:40:211
399050320irq/30-eth0_g0_470-21kworker/1:110:07:511
399050320irq/30-eth0_g0_3208-21forks07:15:191
399050320irq/30-eth0_g0_28359-21latency09:50:201
399050320irq/30-eth0_g0_13538-21latency_hist08:20:061
399050320irq/30-eth0_g0_12552-21sshd08:10:281
398950320irq/29-eth0_g0_19603-21grep08:55:240
398950320irq/29-eth0_g0_19603-21grep08:55:240
398950320irq/29-eth0_g0_19094-21unixbench_singl08:50:271
398950320irq/29-eth0_g0_19094-21unixbench_singl08:50:271
398950320irq/29-eth0_g0_14976-21unixbench_multi08:25:290
399050310irq/30-eth0_g0_0-21swapper/108:55:181
399050310irq/30-eth0_g0_0-21swapper/108:55:181
399050310irq/30-eth0_g0_0-21swapper/107:20:261
398950310irq/29-eth0_g0_9512-21/usr/sbin/munin07:55:260
398950310irq/29-eth0_g0_3999-21df_inode07:20:170
398950310irq/29-eth0_g0_2228-21/usr/sbin/munin07:10:240
398950310irq/29-eth0_g0_20619-21grep09:01:071
398950310irq/29-eth0_g0_0-21swapper/008:40:260
398950310irq/29-eth0_g0_0-21swapper/007:49:320
399050300irq/30-eth0_g0_9873-21netstat07:55:201
399050300irq/30-eth0_g0_8930-21iostat07:50:211
399050300irq/30-eth0_g0_15011-21unixbench_multi08:25:291
399050300irq/30-eth0_g0_0-21swapper/108:40:221
398950300irq/29-eth0_g0_22885-21kworker/0:208:50:170
398950300irq/29-eth0_g0_22885-21kworker/0:208:50:170
398950300irq/29-eth0_g0_1938-21sendmail_mailst07:05:280
398950300irq/29-eth0_g0_0-21swapper/007:15:230
1326993010cyclictest0-21swapper/108:30:221
1326992923cyclictest5106-21proc_pri07:25:261
132699291cyclictest0-21swapper/107:05:201
399050280irq/30-eth0_g0_10933-21grep08:00:270
398950280irq/29-eth0_g0_132599cyclictest08:45:260
398950280irq/29-eth0_g0_132599cyclictest08:45:260
398950280irq/29-eth0_g0_0-21swapper/008:12:020
399050270irq/30-eth0_g0_0-21swapper/107:30:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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