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2026-06-02 - 21:27

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Tue Jun 02, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211370ksoftirqd/1121750irq/30-eth0_g0_10:16:531
121950ksoftirqd/1121750irq/30-eth0_g0_10:09:361
121860ksoftirqd/1121750irq/30-eth0_g0_07:49:541
121820ksoftirqd/1121650irq/29-eth0_g0_11:10:010
121810ksoftirqd/1121750irq/30-eth0_g0_11:06:331
7382790sleep1121750irq/30-eth0_g0_07:19:541
121770ksoftirqd/1121750irq/30-eth0_g0_09:35:161
121760ksoftirqd/1121750irq/30-eth0_g0_08:09:460
121650ksoftirqd/1121750irq/30-eth0_g0_08:09:441
121630ksoftirqd/1121750irq/30-eth0_g0_11:59:461
3019199542cyclictest10701-21ntp_states12:24:501
3019199542cyclictest0-21swapper/110:34:531
3019199531cyclictest28650-21grep11:24:561
3019199531cyclictest15588-21/usr/sbin/munin08:19:531
3019199521cyclictest27209-21diskmemload11:49:481
3019199511cyclictest1964-21runrttasks12:18:461
121750510irq/30-eth0_g0_121ksoftirqd/110:39:561
66262500sleep0121650irq/29-eth0_g0_12:09:430
3019199501cyclictest3410-21unixbench_multi07:29:571
3019199501cyclictest30283-21rt-features09:19:541
3019199501cyclictest27209-21diskmemload09:44:351
3019199501cyclictest27209-21diskmemload09:44:351
121490ksoftirqd/1121750irq/30-eth0_g0_09:33:321
3019199482cyclictest0-21swapper/110:54:561
3019199481cyclictest4232-21seq07:34:501
121750480irq/30-eth0_g0_0-21swapper/111:03:021
121480ksoftirqd/1121750irq/30-eth0_g0_08:19:490
121480ksoftirqd/1121650irq/29-eth0_g0_11:29:160
3019199471cyclictest27209-21diskmemload12:21:291
3019199471cyclictest0-21swapper/107:54:561
121750470irq/30-eth0_g0_121ksoftirqd/112:33:431
121750470irq/30-eth0_g0_121ksoftirqd/107:43:571
121650470irq/29-eth0_g0_3019199cyclictest09:10:301
121470ksoftirqd/1121750irq/30-eth0_g0_12:38:511
121470ksoftirqd/1121650irq/29-eth0_g0_10:52:561
3019199461cyclictest27209-21diskmemload11:46:221
3019199461cyclictest27209-21diskmemload11:46:221
3019199461cyclictest27209-21diskmemload11:24:351
3019199461cyclictest0-21swapper/111:29:551
121750460irq/30-eth0_g0_121ksoftirqd/109:14:571
121650460irq/29-eth0_g0_0-21swapper/007:09:350
3019199452cyclictest23586-21latency_hist08:54:361
30191994516cyclictest12249-21if_eth010:19:481
3019199451cyclictest30931-21unixbench_multi07:09:571
121750450irq/30-eth0_g0_25945-21ntpq11:14:531
121750450irq/30-eth0_g0_121ksoftirqd/111:58:261
121750450irq/30-eth0_g0_121ksoftirqd/109:54:551
3019199441cyclictest0-21swapper/107:18:461
121750440irq/30-eth0_g0_121ksoftirqd/110:01:201
121750440irq/30-eth0_g0_121ksoftirqd/108:29:551
121750440irq/30-eth0_g0_10250-21unixbench_multi10:09:571
121750440irq/30-eth0_g0_10250-21unixbench_multi10:09:571
121650440irq/29-eth0_g0_13-21kworker/0:110:23:120
30191994326cyclictest15641-21munin-run10:34:351
30191994316cyclictest7159-21uptime07:44:561
3019199431cyclictest0-21swapper/112:09:401
121750430irq/30-eth0_g0_3019199cyclictest09:53:391
121750430irq/30-eth0_g0_121ksoftirqd/111:41:461
121750430irq/30-eth0_g0_121ksoftirqd/111:35:201
121750430irq/30-eth0_g0_121ksoftirqd/110:29:361
121750430irq/30-eth0_g0_121ksoftirqd/109:47:101
121750430irq/30-eth0_g0_121ksoftirqd/109:47:101
121750430irq/30-eth0_g0_121ksoftirqd/109:04:351
121650430irq/29-eth0_g0_7508-21netstat09:59:510
121430ksoftirqd/13019199cyclictest08:19:361
121430ksoftirqd/1121750irq/30-eth0_g0_10:59:510
121430ksoftirqd/1121650irq/29-eth0_g0_10:25:330
30191994224cyclictest24177-21awk08:54:561
121750420irq/30-eth0_g0_121ksoftirqd/111:10:371
121750420irq/30-eth0_g0_121ksoftirqd/109:25:521
121650420irq/29-eth0_g0_377-21df_abs07:19:470
121650420irq/29-eth0_g0_30920-21proc_pri11:34:550
121650420irq/29-eth0_g0_31ksoftirqd/010:29:490
121650420irq/29-eth0_g0_13-21kworker/0:109:14:300
121650420irq/29-eth0_g0_0-21swapper/010:55:370
121420ksoftirqd/1121750irq/30-eth0_g0_08:36:040
121420ksoftirqd/1121650irq/29-eth0_g0_10:45:441
3019199411cyclictest0-21swapper/107:27:591
3019199411cyclictest0-21swapper/107:27:591
121750410irq/30-eth0_g0_121ksoftirqd/112:09:151
121650410irq/29-eth0_g0_2632-21ntp_kernel_pll_09:39:520
121650410irq/29-eth0_g0_2632-21ntp_kernel_pll_09:39:520
121650410irq/29-eth0_g0_13-21kworker/0:112:09:360
121650410irq/29-eth0_g0_13-21kworker/0:111:47:500
121650410irq/29-eth0_g0_13-21kworker/0:111:47:500
121650410irq/29-eth0_g0_13-21kworker/0:111:16:190
121650410irq/29-eth0_g0_0-21swapper/010:12:360
121650410irq/29-eth0_g0_0-21swapper/010:12:360
121410ksoftirqd/1121750irq/30-eth0_g0_12:21:130
112362410sleep0121650irq/29-eth0_g0_10:14:540
121650400irq/29-eth0_g0_27565-21seq11:20:360
121650400irq/29-eth0_g0_1964-21runrttasks09:46:410
121650400irq/29-eth0_g0_1964-21runrttasks09:46:410
121650400irq/29-eth0_g0_1964-21runrttasks09:20:440
121650400irq/29-eth0_g0_13-21kworker/0:112:39:080
121650400irq/29-eth0_g0_13-21kworker/0:112:17:020
121650400irq/29-eth0_g0_13-21kworker/0:112:00:370
121650400irq/29-eth0_g0_13-21kworker/0:111:33:260
121650400irq/29-eth0_g0_13-21kworker/0:111:05:480
121650400irq/29-eth0_g0_13-21kworker/0:110:49:500
121650400irq/29-eth0_g0_13-21kworker/0:110:36:310
121650400irq/29-eth0_g0_0-21swapper/009:32:510
3019199391cyclictest0-21swapper/109:04:521
3019199391cyclictest0-21swapper/108:25:561
121650390irq/29-eth0_g0_13-21kworker/0:111:50:110
121650390irq/29-eth0_g0_13-21kworker/0:111:44:030
121650390irq/29-eth0_g0_13-21kworker/0:110:49:120
121650390irq/29-eth0_g0_13-21kworker/0:109:27:080
121650390irq/29-eth0_g0_0-21swapper/009:59:110
121650390irq/29-eth0_g0_0-21swapper/009:36:090
121650380irq/29-eth0_g0_13-21kworker/0:112:34:220
121650380irq/29-eth0_g0_13-21kworker/0:111:56:150
121650380irq/29-eth0_g0_13-21kworker/0:110:42:210
121650380irq/29-eth0_g0_13-21kworker/0:110:05:440
121650380irq/29-eth0_g0_13-21kworker/0:109:51:370
3019199372cyclictest18950-21iostat08:34:491
3019199371cyclictest21828-21unixbench_multi08:44:571
3019199371cyclictest10688-21awk07:59:551
121750370irq/30-eth0_g0_29742-21unixbench_singl07:04:561
121650370irq/29-eth0_g0_23585-21latency_hist08:54:360
121650370irq/29-eth0_g0_20329-21/usr/sbin/munin08:39:520
121650370irq/29-eth0_g0_13-21kworker/0:112:26:540
121650370irq/29-eth0_g0_13-21kworker/0:109:18:380
121750360irq/30-eth0_g0_1964-21runrttasks07:32:070
121650360irq/29-eth0_g0_31811-21missed_timers07:14:500
3019199352cyclictest11906-21mailstats08:04:541
121650350irq/29-eth0_g0_0-21swapper/008:59:510
3019199341cyclictest20015-21sed08:39:471
121650340irq/29-eth0_g0_30934-21unixbench_multi07:09:570
121750330irq/30-eth0_g0_1964-21runrttasks07:25:250
121750330irq/30-eth0_g0_1964-21runrttasks07:25:250
121650330irq/29-eth0_g0_8332-21unixbench_multi07:49:570
121650330irq/29-eth0_g0_3019099cyclictest07:39:580
121650330irq/29-eth0_g0_26770-21unixbench_singl09:04:560
121650320irq/29-eth0_g0_222132sleep008:48:350
121650320irq/29-eth0_g0_14104-21memory08:14:500
121650320irq/29-eth0_g0_10546-21open_files07:59:530
121650320irq/29-eth0_g0_0-21swapper/008:29:460
121750310irq/30-eth0_g0_1964-21runrttasks07:47:210
121750310irq/30-eth0_g0_0-21swapper/007:54:470
121650310irq/29-eth0_g0_12067-21runrttasks08:04:560
121650310irq/29-eth0_g0_0-21swapper/008:59:350
121650300irq/29-eth0_g0_3999-21/usr/sbin/munin07:34:470
121650300irq/29-eth0_g0_16258-21seq08:24:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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