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2025-12-15 - 09:25

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 all highest latencies:
System rack3slot5s.osadl.org (updated Sun Dec 14, 2025 13:37:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1641021410sleep1121450irq/29-eth0_g0_10:01:111
2621321050sleep1121450irq/29-eth0_g0_10:41:011
2621321050sleep1121450irq/29-eth0_g0_10:41:011
121810ksoftirqd/1121550irq/30-eth0_g0_12:27:411
168122750sleep0121550irq/30-eth0_g0_12:13:300
73682670sleep1121450irq/29-eth0_g0_11:36:451
121660ksoftirqd/1121550irq/30-eth0_g0_12:06:390
121650ksoftirqd/1121550irq/30-eth0_g0_08:03:091
4102600sleep1121550irq/30-eth0_g0_11:07:411
196282600sleep0121450irq/29-eth0_g0_12:26:550
121450570irq/29-eth0_g0_31ksoftirqd/008:14:040
180352520sleep0121550irq/30-eth0_g0_12:18:300
207502500sleep0121550irq/30-eth0_g0_12:30:440
102352500sleep1121550irq/30-eth0_g0_09:35:421
121550450irq/30-eth0_g0_121ksoftirqd/110:58:521
121450450irq/29-eth0_g0_6615-21tail07:07:440
121450440irq/29-eth0_g0_31ksoftirqd/010:27:590
121440ksoftirqd/1121450irq/29-eth0_g0_09:47:410
6907994338cyclictest10646-21latency_hist07:24:581
121550430irq/30-eth0_g0_1221-21kworker/1:212:37:401
121450430irq/29-eth0_g0_31ksoftirqd/009:22:450
121450430irq/29-eth0_g0_13-21kworker/0:112:37:360
121450430irq/29-eth0_g0_13-21kworker/0:111:48:580
121430ksoftirqd/1121450irq/29-eth0_g0_10:07:441
121450420irq/29-eth0_g0_28039-21proc_pri10:47:410
121450420irq/29-eth0_g0_13-21kworker/0:111:07:530
121450420irq/29-eth0_g0_121ksoftirqd/109:33:140
121420ksoftirqd/1121550irq/30-eth0_g0_11:42:430
121420ksoftirqd/1121450irq/29-eth0_g0_07:37:391
121550410irq/30-eth0_g0_26003-21taskset10:39:301
121550410irq/30-eth0_g0_21807-21seq10:22:401
121550410irq/30-eth0_g0_1221-21kworker/1:210:32:161
121550410irq/30-eth0_g0_1221-21kworker/1:209:47:421
121550410irq/30-eth0_g0_1221-21kworker/1:209:27:011
121550410irq/30-eth0_g0_1221-21kworker/1:209:27:011
121550410irq/30-eth0_g0_121ksoftirqd/111:19:581
121550410irq/30-eth0_g0_121ksoftirqd/109:32:251
121450410irq/29-eth0_g0_1941-21runrttasks10:23:100
121450410irq/29-eth0_g0_13-21kworker/0:110:51:080
121450410irq/29-eth0_g0_13-21kworker/0:109:58:390
121410ksoftirqd/1121450irq/29-eth0_g0_10:47:441
210072400sleep0121450irq/29-eth0_g0_08:07:400
121550400irq/30-eth0_g0_1221-21kworker/1:212:11:061
121550400irq/30-eth0_g0_1221-21kworker/1:211:12:241
121550400irq/30-eth0_g0_121ksoftirqd/111:34:361
121550400irq/30-eth0_g0_0-21swapper/111:24:011
121450400irq/29-eth0_g0_3259-21vmstat11:17:490
121450400irq/29-eth0_g0_31ksoftirqd/010:08:590
121450400irq/29-eth0_g0_131kworker/0:112:20:050
121450400irq/29-eth0_g0_13-21kworker/0:111:59:050
121450400irq/29-eth0_g0_13-21kworker/0:111:59:050
121450400irq/29-eth0_g0_13-21kworker/0:111:12:300
121450400irq/29-eth0_g0_13-21kworker/0:110:16:490
121450400irq/29-eth0_g0_13-21kworker/0:110:01:270
121450400irq/29-eth0_g0_13-21kworker/0:109:40:450
121450400irq/29-eth0_g0_13-21kworker/0:109:25:310
121450400irq/29-eth0_g0_13-21kworker/0:109:25:310
121450400irq/29-eth0_g0_13-21kworker/0:109:18:260
121400ksoftirqd/16593-21/usr/sbin/munin07:07:441
121400ksoftirqd/1121450irq/29-eth0_g0_12:02:481
121400ksoftirqd/1121450irq/29-eth0_g0_11:25:010
121550390irq/30-eth0_g0_1221-21kworker/1:212:30:221
121550390irq/30-eth0_g0_1221-21kworker/1:212:15:041
121550390irq/30-eth0_g0_1221-21kworker/1:209:56:131
121550390irq/30-eth0_g0_1221-21kworker/1:209:18:511
121550390irq/30-eth0_g0_1221-21kworker/1:209:13:531
121550390irq/30-eth0_g0_121ksoftirqd/111:50:071
121550390irq/30-eth0_g0_121ksoftirqd/111:00:341
121550390irq/30-eth0_g0_121ksoftirqd/110:27:141
121450390irq/29-eth0_g0_13616-21latency07:37:390
121450390irq/29-eth0_g0_13-21kworker/0:111:37:260
121450390irq/29-eth0_g0_13-21kworker/0:110:56:130
121450390irq/29-eth0_g0_13-21kworker/0:110:40:400
121450390irq/29-eth0_g0_13-21kworker/0:110:40:400
121450390irq/29-eth0_g0_13-21kworker/0:110:30:470
121450390irq/29-eth0_g0_13-21kworker/0:110:14:050
121450390irq/29-eth0_g0_13-21kworker/0:109:52:160
121450390irq/29-eth0_g0_13-21kworker/0:109:35:040
121450390irq/29-eth0_g0_13-21kworker/0:109:11:390
121390ksoftirqd/1121450irq/29-eth0_g0_09:02:251
121390ksoftirqd/1121450irq/29-eth0_g0_08:54:591
121390ksoftirqd/1121450irq/29-eth0_g0_08:16:211
121390ksoftirqd/1121450irq/29-eth0_g0_08:11:561
121390ksoftirqd/1121450irq/29-eth0_g0_07:27:381
121550380irq/30-eth0_g0_1221-21kworker/1:212:20:401
121550380irq/30-eth0_g0_1221-21kworker/1:211:42:401
121550380irq/30-eth0_g0_1221-21kworker/1:210:19:131
121550380irq/30-eth0_g0_121ksoftirqd/109:40:181
121550380irq/30-eth0_g0_121ksoftirqd/109:22:141
121450380irq/29-eth0_g0_31ksoftirqd/010:36:470
121450380irq/29-eth0_g0_13-21kworker/0:111:21:300
121380ksoftirqd/1121450irq/29-eth0_g0_08:05:421
690799371cyclictest28535-21proc_pri08:37:421
121550370irq/30-eth0_g0_6112-21seq11:31:300
121450370irq/29-eth0_g0_7211-21/usr/sbin/munin07:12:370
121450370irq/29-eth0_g0_31208-21unixbench_singl08:47:450
121450370irq/29-eth0_g0_20011-21zcat08:02:430
121450370irq/29-eth0_g0_1941-21runrttasks07:47:110
121450370irq/29-eth0_g0_17031-21/usr/sbin/munin07:52:410
121450370irq/29-eth0_g0_13-21kworker/0:112:01:370
121450370irq/29-eth0_g0_13-21kworker/0:111:03:590
121450370irq/29-eth0_g0_0-21swapper/011:52:420
121450370irq/29-eth0_g0_0-21swapper/009:09:580
121550360irq/30-eth0_g0_29307-21/usr/sbin/munin08:42:411
121550360irq/30-eth0_g0_18658-21/usr/sbin/munin07:57:421
121550360irq/30-eth0_g0_1221-21kworker/1:210:52:571
121550360irq/30-eth0_g0_1221-21kworker/1:210:12:181
121550360irq/30-eth0_g0_121ksoftirqd/109:50:331
121450360irq/29-eth0_g0_26984-21grep08:32:360
121450360irq/29-eth0_g0_1941-21runrttasks08:54:060
121450360irq/29-eth0_g0_1941-21runrttasks07:40:490
121450360irq/29-eth0_g0_1941-21runrttasks07:30:120
121450360irq/29-eth0_g0_11590-21grep07:27:450
121450360irq/29-eth0_g0_10132-21ps07:22:430
121450360irq/29-eth0_g0_0-21swapper/009:04:520
170102350sleep12088-21lldpd07:52:201
121550350irq/30-eth0_g0_1221-21kworker/1:211:57:411
121550350irq/30-eth0_g0_1221-21kworker/1:211:57:411
121550350irq/30-eth0_g0_1221-21kworker/1:211:27:391
121450350irq/29-eth0_g0_25943-21missed_timers08:27:390
121450350irq/29-eth0_g0_24760-21netstat08:22:390
121450350irq/29-eth0_g0_1941-21runrttasks08:56:430
121450350irq/29-eth0_g0_1941-21runrttasks08:35:490
121450350irq/29-eth0_g0_1941-21runrttasks08:15:520
121450350irq/29-eth0_g0_1221-21kworker/1:212:07:561
121450350irq/29-eth0_g0_0-21swapper/008:41:350
121450350irq/29-eth0_g0_0-21swapper/007:58:180
690799347cyclictest0-21swapper/108:47:391
6907993429cyclictest12791-21unixbench_singl07:32:461
121550340irq/30-eth0_g0_1221-21kworker/1:211:48:501
121450340irq/29-eth0_g0_8973-21fgrep07:17:440
6907993329cyclictest0-21swapper/108:28:071
121550330irq/30-eth0_g0_0-21swapper/109:05:181
121330ksoftirqd/17735-21taskset07:12:431
121330ksoftirqd/1121450irq/29-eth0_g0_08:20:051
6907993228cyclictest0-21swapper/107:46:451
121550320irq/30-eth0_g0_32138-21awk08:52:401
121310ksoftirqd/115284-21taskset07:42:461
690799301cyclictest9398-21latency_hist07:19:581
690799301cyclictest27384-21sendmail_mailqu08:32:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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