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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
Click here to display the system's profile data or here to proceed to next system.
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 Fri Jan 23, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1185521460sleep02124150irq/30-eth0_g0_09:50:570
1211090ksoftirqd/12124150irq/30-eth0_g0_12:25:491
1211040ksoftirqd/1125532sleep012:25:060
1211000ksoftirqd/12124150irq/30-eth0_g0_11:53:281
121920ksoftirqd/12124150irq/30-eth0_g0_10:59:251
121920ksoftirqd/12124150irq/30-eth0_g0_10:59:251
121800ksoftirqd/12124150irq/30-eth0_g0_12:22:481
45432690sleep12124150irq/30-eth0_g0_09:21:271
145992680sleep12124150irq/30-eth0_g0_12:37:021
121540ksoftirqd/12124150irq/30-eth0_g0_12:22:290
121540ksoftirqd/12124150irq/30-eth0_g0_11:21:440
47812500sleep02124150irq/30-eth0_g0_09:24:120
121490ksoftirqd/12124050irq/29-eth0_g0_11:11:081
121480ksoftirqd/12124150irq/30-eth0_g0_10:52:120
121480ksoftirqd/12124150irq/30-eth0_g0_08:35:321
121480ksoftirqd/12124050irq/29-eth0_g0_11:02:011
121480ksoftirqd/12124050irq/29-eth0_g0_10:14:321
102422470chrt2124050irq/29-eth0_g0_12:14:431
2124050460irq/29-eth0_g0_121ksoftirqd/111:06:501
2124050450irq/29-eth0_g0_121ksoftirqd/109:29:441
121450ksoftirqd/12124150irq/30-eth0_g0_12:02:270
2124150440irq/30-eth0_g0_13-21kworker/0:109:35:470
2124150440irq/30-eth0_g0_121ksoftirqd/111:01:070
121440ksoftirqd/12124150irq/30-eth0_g0_12:04:281
121440ksoftirqd/12124150irq/30-eth0_g0_11:09:500
121440ksoftirqd/12124050irq/29-eth0_g0_10:32:061
121440ksoftirqd/12124050irq/29-eth0_g0_08:54:391
121440ksoftirqd/12124050irq/29-eth0_g0_08:05:301
285602430sleep02124150irq/30-eth0_g0_11:17:580
121430ksoftirqd/12124150irq/30-eth0_g0_11:25:071
121430ksoftirqd/12124150irq/30-eth0_g0_10:00:221
121430ksoftirqd/12124150irq/30-eth0_g0_10:00:221
121430ksoftirqd/12124050irq/29-eth0_g0_11:19:391
2124150420irq/30-eth0_g0_1546-21missed_timers11:39:400
2124050420irq/29-eth0_g0_470-21kworker/1:110:36:591
121420ksoftirqd/12124150irq/30-eth0_g0_11:06:060
121420ksoftirqd/12124050irq/29-eth0_g0_10:41:281
2124150410irq/30-eth0_g0_13-21kworker/0:112:13:260
2124150410irq/30-eth0_g0_13-21kworker/0:112:13:260
2124150410irq/30-eth0_g0_13-21kworker/0:111:54:370
2124050410irq/29-eth0_g0_470-21kworker/1:112:10:031
2124050410irq/29-eth0_g0_470-21kworker/1:112:10:031
2124050410irq/29-eth0_g0_470-21kworker/1:110:54:261
2124050410irq/29-eth0_g0_121ksoftirqd/110:21:181
2124050410irq/29-eth0_g0_121ksoftirqd/109:27:151
121410ksoftirqd/12124150irq/30-eth0_g0_10:02:360
121410ksoftirqd/12124150irq/30-eth0_g0_10:02:360
121410ksoftirqd/12124050irq/29-eth0_g0_11:56:401
121410ksoftirqd/12124050irq/29-eth0_g0_09:49:451
121410ksoftirqd/12124050irq/29-eth0_g0_08:09:441
2124150400irq/30-eth0_g0_31ksoftirqd/010:30:200
2124150400irq/30-eth0_g0_19574-21unixbench_multi08:09:470
2124150400irq/30-eth0_g0_1895-21runrttasks09:09:460
2124150400irq/30-eth0_g0_13-21kworker/0:112:08:160
2124150400irq/30-eth0_g0_13-21kworker/0:111:47:170
2124150400irq/30-eth0_g0_13-21kworker/0:109:58:590
2124150400irq/30-eth0_g0_13-21kworker/0:109:25:480
2124150400irq/30-eth0_g0_13-21kworker/0:109:14:440
2124150400irq/30-eth0_g0_121ksoftirqd/112:31:490
2124150400irq/30-eth0_g0_121ksoftirqd/109:47:340
2124050400irq/29-eth0_g0_121ksoftirqd/112:29:561
121400ksoftirqd/12124050irq/29-eth0_g0_10:07:170
2124150390irq/30-eth0_g0_13-21kworker/0:111:50:430
2124150390irq/30-eth0_g0_13-21kworker/0:109:40:360
2124150390irq/30-eth0_g0_121ksoftirqd/110:39:470
2124050390irq/29-eth0_g0_470-21kworker/1:111:33:051
2124050390irq/29-eth0_g0_470-21kworker/1:111:15:041
2124050390irq/29-eth0_g0_3560-21runrttasks07:04:461
2124050390irq/29-eth0_g0_121ksoftirqd/110:04:391
2124050390irq/29-eth0_g0_0-21swapper/109:57:271
121390ksoftirqd/12124050irq/29-eth0_g0_12:00:511
121390ksoftirqd/12124050irq/29-eth0_g0_09:01:351
121390ksoftirqd/12124050irq/29-eth0_g0_08:31:411
2124150380irq/30-eth0_g0_9867-21vmstat07:29:460
2124150380irq/30-eth0_g0_6993-21ls07:19:400
2124150380irq/30-eth0_g0_31ksoftirqd/010:09:490
2124150380irq/30-eth0_g0_31ksoftirqd/009:31:030
2124150380irq/30-eth0_g0_16414-21taskset07:59:260
2124150380irq/30-eth0_g0_13-21kworker/0:112:14:360
2124150380irq/30-eth0_g0_13-21kworker/0:111:38:140
2124150380irq/30-eth0_g0_13-21kworker/0:111:30:220
2124150380irq/30-eth0_g0_13-21kworker/0:111:25:500
2124150380irq/30-eth0_g0_13-21kworker/0:110:45:390
2124150380irq/30-eth0_g0_13-21kworker/0:110:14:270
2124150380irq/30-eth0_g0_0-21swapper/007:59:430
2124050380irq/29-eth0_g0_9953-21/usr/sbin/munin09:44:371
2124050380irq/29-eth0_g0_470-21kworker/1:109:35:131
2124050380irq/29-eth0_g0_31ksoftirqd/010:37:060
2124050380irq/29-eth0_g0_1988-21runrttasks10:54:420
2124050380irq/29-eth0_g0_1988-21runrttasks10:54:420
2124050380irq/29-eth0_g0_13280-21proc_pri07:44:451
2124050380irq/29-eth0_g0_121ksoftirqd/110:44:321
2124050380irq/29-eth0_g0_121ksoftirqd/110:13:241
121380ksoftirqd/12124150irq/30-eth0_g0_08:54:360
4148993710cyclictest2124050irq/29-eth0_g0_07:59:251
2124150370irq/30-eth0_g0_26116-21taskset08:38:330
2124150370irq/30-eth0_g0_18434-21cpu10:19:360
2124150370irq/30-eth0_g0_13-21kworker/0:112:38:490
2124150370irq/30-eth0_g0_13-21kworker/0:110:25:450
2124050370irq/29-eth0_g0_3076-21unixbench_multi09:14:461
2124050370irq/29-eth0_g0_28193-21unixbench_singl08:44:451
2124050370irq/29-eth0_g0_20694-21wc08:14:461
2124050370irq/29-eth0_g0_20694-21wc08:14:461
2124050370irq/29-eth0_g0_1988-21runrttasks07:06:180
2124050370irq/29-eth0_g0_121ksoftirqd/111:41:401
2124050370irq/29-eth0_g0_121ksoftirqd/109:41:561
2124050370irq/29-eth0_g0_0-21swapper/109:12:461
121370ksoftirqd/12124050irq/29-eth0_g0_11:34:401
2124150360irq/30-eth0_g0_5998-21fgrep07:14:440
2124150360irq/30-eth0_g0_5998-21fgrep07:14:440
2124150360irq/30-eth0_g0_23965-21df08:29:370
2124050360irq/29-eth0_g0_6750-21df07:19:361
2124050360irq/29-eth0_g0_470-21kworker/1:110:26:261
2124050360irq/29-eth0_g0_2804-21taskset11:44:401
2124050360irq/29-eth0_g0_22012-21unixbench_multi08:19:471
2124050360irq/29-eth0_g0_1988-21runrttasks07:38:011
2124050360irq/29-eth0_g0_1988-21runrttasks07:38:011
2124050350irq/29-eth0_g0_1988-21runrttasks07:51:121
2124050350irq/29-eth0_g0_0-21swapper/108:42:031
2124050350irq/29-eth0_g0_0-21swapper/107:44:251
2124050350irq/29-eth0_g0_0-21swapper/107:44:251
2124050350irq/29-eth0_g0_0-21swapper/107:24:461
121350ksoftirqd/12124050irq/29-eth0_g0_09:04:421
2124150340irq/30-eth0_g0_8622-21unixbench_singl07:24:470
2124050340irq/29-eth0_g0_9465-21cat07:29:401
2124050340irq/29-eth0_g0_1988-21runrttasks08:53:181
2124050340irq/29-eth0_g0_1988-21runrttasks08:02:261
2124050340irq/29-eth0_g0_1988-21runrttasks07:18:561
2124050340irq/29-eth0_g0_1988-21runrttasks07:18:561
2124150330irq/30-eth0_g0_4823-21timerandwakeup07:09:470
2124150330irq/30-eth0_g0_22997-21taskset08:24:430
2124150330irq/30-eth0_g0_20841-21sed08:14:480
2124150330irq/30-eth0_g0_20841-21sed08:14:480
2124150330irq/30-eth0_g0_17773-21df08:04:370
2124150330irq/30-eth0_g0_13128-21chrt07:44:420
2124150330irq/30-eth0_g0_11714-21df_abs07:39:360
2124150330irq/30-eth0_g0_11714-21df_abs07:39:360
2124050330irq/29-eth0_g0_4874-21sed07:09:471
2124050330irq/29-eth0_g0_22091-21unixbench_singl08:19:470
2124150320irq/30-eth0_g0_28940-21if_eth008:49:380
2124150320irq/30-eth0_g0_26743-21ps08:39:440
2124150320irq/30-eth0_g0_14565-21zcat07:49:440
2124150320irq/30-eth0_g0_0-21swapper/008:44:420
2124150320irq/30-eth0_g0_0-21swapper/007:34:410
2124150320irq/30-eth0_g0_0-21swapper/007:34:410
2124050320irq/29-eth0_g0_32085-21runrttasks09:01:480
2124050320irq/29-eth0_g0_0-21swapper/108:25:511
2124150310irq/30-eth0_g0_32492-21df_abs09:04:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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