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2026-07-02 - 16:18

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 Thu Jul 02, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3212121030sleep1121650irq/29-eth0_g0_09:31:371
121920ksoftirqd/1121750irq/30-eth0_g0_07:03:421
121800ksoftirqd/1117450irq/72-mmc010:43:381
121790ksoftirqd/1191062chrt10:49:050
304082730sleep1121750irq/30-eth0_g0_11:37:001
131812720sleep1121750irq/30-eth0_g0_10:26:301
47232610sleep1121650irq/29-eth0_g0_09:52:581
121610ksoftirqd/1121750irq/30-eth0_g0_12:23:450
121590ksoftirqd/1121650irq/29-eth0_g0_11:28:411
216352580sleep0121650irq/29-eth0_g0_10:59:580
121560ksoftirqd/1121750irq/30-eth0_g0_11:53:491
121560ksoftirqd/1121650irq/29-eth0_g0_10:32:071
121540ksoftirqd/1121750irq/30-eth0_g0_10:17:411
121530ksoftirqd/1121750irq/30-eth0_g0_11:48:141
121530ksoftirqd/1121750irq/30-eth0_g0_11:48:141
121530ksoftirqd/1121650irq/29-eth0_g0_11:22:141
121520ksoftirqd/1121750irq/30-eth0_g0_10:36:221
121510ksoftirqd/1121750irq/30-eth0_g0_11:14:481
121510ksoftirqd/1121750irq/30-eth0_g0_09:14:251
121510ksoftirqd/1121650irq/29-eth0_g0_07:54:481
121490ksoftirqd/1145042sleep010:32:380
121490ksoftirqd/1121750irq/30-eth0_g0_11:23:371
121490ksoftirqd/1121750irq/30-eth0_g0_10:59:491
315512480sleep1121650irq/29-eth0_g0_11:41:021
121480ksoftirqd/1121750irq/30-eth0_g0_08:23:390
121470ksoftirqd/12909499cyclictest09:24:341
121470ksoftirqd/1121750irq/30-eth0_g0_10:57:041
114082460sleep0121650irq/29-eth0_g0_08:08:230
121450ksoftirqd/1121750irq/30-eth0_g0_09:34:231
121650440irq/29-eth0_g0_121ksoftirqd/111:46:370
121650440irq/29-eth0_g0_121ksoftirqd/111:46:370
121650440irq/29-eth0_g0_0-21swapper/007:03:350
121440ksoftirqd/1121750irq/30-eth0_g0_11:59:341
121440ksoftirqd/1121750irq/30-eth0_g0_11:04:491
121440ksoftirqd/1121750irq/30-eth0_g0_10:52:561
121440ksoftirqd/1121750irq/30-eth0_g0_09:41:581
121650430irq/29-eth0_g0_31ksoftirqd/011:58:430
121650430irq/29-eth0_g0_31ksoftirqd/009:09:220
121750420irq/30-eth0_g0_121ksoftirqd/110:00:251
121750420irq/30-eth0_g0_121ksoftirqd/108:38:441
121650420irq/29-eth0_g0_31ksoftirqd/010:23:340
121650420irq/29-eth0_g0_131kworker/0:112:21:360
121650420irq/29-eth0_g0_13-21kworker/0:109:38:460
121420ksoftirqd/1121650irq/29-eth0_g0_10:16:290
121650410irq/29-eth0_g0_31ksoftirqd/011:13:410
121650410irq/29-eth0_g0_13-21kworker/0:111:35:110
2909499401cyclictest5602-21cat07:43:371
121750400irq/30-eth0_g0_0-21swapper/110:07:011
121650400irq/29-eth0_g0_31ksoftirqd/010:03:430
121650400irq/29-eth0_g0_31ksoftirqd/009:43:570
121650400irq/29-eth0_g0_13-21kworker/0:112:30:300
121650400irq/29-eth0_g0_13-21kworker/0:112:08:160
121400ksoftirqd/1121650irq/29-eth0_g0_10:39:030
2909499392cyclictest15953-21df10:38:341
2909499391cyclictest10892-21unixbench_multi08:03:441
126962390sleep0121650irq/29-eth0_g0_12:36:470
121750390irq/30-eth0_g0_1219-21kworker/1:212:28:321
121650390irq/29-eth0_g0_32422-21cpu09:33:350
121650390irq/29-eth0_g0_32171-21sendmail_mailqu07:18:440
121650390irq/29-eth0_g0_31ksoftirqd/011:28:430
121650390irq/29-eth0_g0_31ksoftirqd/009:56:320
121650390irq/29-eth0_g0_25066-21df09:03:340
121650390irq/29-eth0_g0_13-21kworker/0:110:20:470
121650390irq/29-eth0_g0_13-21kworker/0:110:20:470
121650390irq/29-eth0_g0_13-21kworker/0:110:11:300
121650390irq/29-eth0_g0_13-21kworker/0:110:02:440
121650390irq/29-eth0_g0_13-21kworker/0:109:49:030
121650390irq/29-eth0_g0_13-21kworker/0:109:23:520
121650390irq/29-eth0_g0_121ksoftirqd/109:13:260
121650390irq/29-eth0_g0_0-21swapper/009:18:370
121390ksoftirqd/1121750irq/30-eth0_g0_10:45:130
29094993833cyclictest11673-21unixbench_singl10:18:451
29094993833cyclictest11673-21unixbench_singl10:18:451
2909499382cyclictest8789-21latency10:08:371
2909499382cyclictest0-21swapper/108:28:441
2909499381cyclictest240612sleep108:58:391
2909499381cyclictest21998-21unixbench_singl08:48:451
2909499381cyclictest0-21swapper/111:08:411
2909499381cyclictest0-21swapper/111:08:411
121750380irq/30-eth0_g0_1219-21kworker/1:212:22:441
121750380irq/30-eth0_g0_1219-21kworker/1:209:21:341
121750380irq/30-eth0_g0_121ksoftirqd/112:17:571
121750380irq/30-eth0_g0_121ksoftirqd/109:57:461
121750380irq/30-eth0_g0_121ksoftirqd/109:45:291
121650380irq/29-eth0_g0_7507-21awk12:13:430
121650380irq/29-eth0_g0_31ksoftirqd/009:28:390
121650380irq/29-eth0_g0_1964-21runrttasks12:12:110
121650380irq/29-eth0_g0_1964-21runrttasks07:18:050
121650380irq/29-eth0_g0_16614-21ethtool08:28:370
121650380irq/29-eth0_g0_13-21kworker/0:110:54:420
121650380irq/29-eth0_g0_1194-21mailstats11:48:440
121650380irq/29-eth0_g0_0-21swapper/011:28:240
121650380irq/29-eth0_g0_0-21swapper/007:13:240
2909499372cyclictest12080-21awk12:33:401
2909499371cyclictest309352sleep107:13:431
2909499371cyclictest1892-21iostat07:28:371
121750370irq/30-eth0_g0_13-21kworker/0:111:18:500
121750370irq/30-eth0_g0_121ksoftirqd/112:12:251
121750370irq/30-eth0_g0_0-21swapper/111:49:281
121650370irq/29-eth0_g0_9197-21df_inode07:58:360
121650370irq/29-eth0_g0_31ksoftirqd/011:08:520
121650370irq/29-eth0_g0_31ksoftirqd/011:08:520
121650370irq/29-eth0_g0_1964-21runrttasks11:39:430
121650370irq/29-eth0_g0_14083-21df08:18:350
121650370irq/29-eth0_g0_13-21kworker/0:111:53:510
121650370irq/29-eth0_g0_13-21kworker/0:111:04:020
121650370irq/29-eth0_g0_13-21kworker/0:110:36:290
2909499362cyclictest933-21ps07:23:431
2909499362cyclictest13103-21ntpdc08:13:401
2909499361cyclictest4658-21zcat07:38:431
2909499361cyclictest31362sleep107:33:371
2909499361cyclictest29340-21chrt07:08:351
2909499361cyclictest23077-21sendmail_mailqu08:53:431
2909499361cyclictest18314-21grep08:33:461
2909499361cyclictest10415-21grep12:28:241
2909499361cyclictest0-21swapper/108:43:401
2909499361cyclictest0-21swapper/108:23:381
121750360irq/30-eth0_g0_1219-21kworker/1:212:04:061
121750360irq/30-eth0_g0_1219-21kworker/1:209:11:481
121650360irq/29-eth0_g0_4519-21ntp_offset07:38:400
121650360irq/29-eth0_g0_12900-21/usr/sbin/munin08:13:360
121650360irq/29-eth0_g0_0-21swapper/109:05:481
2909499352cyclictest9580-21find07:58:441
2909499351cyclictest6739-21taskset07:48:351
2909499351cyclictest6739-21taskset07:48:351
2909499351cyclictest32196-21sendmail_mailtr07:18:441
2909499351cyclictest14273-21cat08:18:391
2909499351cyclictest12018-21processes08:08:401
121650350irq/29-eth0_g0_8751-21seq07:56:070
121650350irq/29-eth0_g0_7051-21ps07:48:420
121650350irq/29-eth0_g0_7051-21ps07:48:420
121650350irq/29-eth0_g0_23901-21df_abs08:58:360
121650350irq/29-eth0_g0_19393-21sendmail_mailqu08:38:430
121650350irq/29-eth0_g0_11873-21ntp_kernel_err08:08:380
121650350irq/29-eth0_g0_1097-21unixbench_singl07:23:450
121650340irq/29-eth0_g0_3139-21/usr/sbin/munin07:33:370
121650340irq/29-eth0_g0_18322-21sed08:33:460
121650340irq/29-eth0_g0_0-21swapper/008:48:400
121650340irq/29-eth0_g0_0-21swapper/007:28:370
121650330irq/29-eth0_g0_5826-21processes07:43:420
121650330irq/29-eth0_g0_22605-21chrt08:53:350
121650330irq/29-eth0_g0_20402-21missed_timers08:43:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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