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2026-07-16 - 18:59

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 16, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
131842880sleep0121750irq/30-eth0_g0_09:11:450
121860ksoftirqd/1121650irq/29-eth0_g0_09:44:170
121840ksoftirqd/1121650irq/29-eth0_g0_10:42:370
121830ksoftirqd/1121750irq/30-eth0_g0_11:27:501
81212780chrt121750irq/30-eth0_g0_11:03:021
121780ksoftirqd/1121750irq/30-eth0_g0_10:54:071
181702770sleep0121650irq/29-eth0_g0_09:32:470
121590ksoftirqd/1121750irq/30-eth0_g0_08:53:091
121560ksoftirqd/1121650irq/29-eth0_g0_10:09:390
315592550sleep0121650irq/29-eth0_g0_10:26:510
121520ksoftirqd/1121750irq/30-eth0_g0_10:43:101
121650490irq/29-eth0_g0_121ksoftirqd/111:11:130
121480ksoftirqd/1121650irq/29-eth0_g0_09:11:181
174452470sleep0121650irq/29-eth0_g0_11:41:080
121650470irq/29-eth0_g0_4286-21unixbench_singl08:33:110
121470ksoftirqd/1121750irq/30-eth0_g0_11:30:141
121650460irq/29-eth0_g0_31ksoftirqd/011:18:100
121750450irq/30-eth0_g0_1219-21kworker/1:212:17:421
121450ksoftirqd/1121750irq/30-eth0_g0_12:32:030
121450ksoftirqd/1121650irq/29-eth0_g0_11:57:010
121450ksoftirqd/1121650irq/29-eth0_g0_11:16:191
121440ksoftirqd/1121650irq/29-eth0_g0_09:33:081
154252430sleep0121750irq/30-eth0_g0_09:19:170
121750430irq/30-eth0_g0_1219-21kworker/1:211:35:551
121750430irq/30-eth0_g0_1219-21kworker/1:210:14:051
121650430irq/29-eth0_g0_31ksoftirqd/010:15:140
121650430irq/29-eth0_g0_16858-21ntp_kernel_err07:13:050
121650430irq/29-eth0_g0_16858-21ntp_kernel_err07:13:050
121430ksoftirqd/1121750irq/30-eth0_g0_11:56:211
121430ksoftirqd/1121650irq/29-eth0_g0_08:48:031
305212420sleep0121750irq/30-eth0_g0_12:33:110
121750420irq/30-eth0_g0_0-21swapper/109:43:121
121650420irq/29-eth0_g0_31ksoftirqd/011:28:330
121650420irq/29-eth0_g0_121ksoftirqd/111:35:220
121420ksoftirqd/1121650irq/29-eth0_g0_08:18:121
121420ksoftirqd/1121650irq/29-eth0_g0_08:18:121
121750410irq/30-eth0_g0_58362ntp_offset10:53:070
121750410irq/30-eth0_g0_121ksoftirqd/112:29:081
121750410irq/30-eth0_g0_121ksoftirqd/111:43:211
121750410irq/30-eth0_g0_121ksoftirqd/111:41:461
121650410irq/29-eth0_g0_24048-21sort07:43:040
121650410irq/29-eth0_g0_24048-21sort07:43:040
121650410irq/29-eth0_g0_13-21kworker/0:111:51:500
121650410irq/29-eth0_g0_13-21kworker/0:111:51:500
121650410irq/29-eth0_g0_13-21kworker/0:109:58:050
121410ksoftirqd/1121750irq/30-eth0_g0_10:33:520
121410ksoftirqd/1121650irq/29-eth0_g0_09:41:001
121410ksoftirqd/1121650irq/29-eth0_g0_09:21:181
121750400irq/30-eth0_g0_7484-21chrt10:59:131
121750400irq/30-eth0_g0_1219-21kworker/1:210:30:171
121750400irq/30-eth0_g0_1219-21kworker/1:209:51:541
121750400irq/30-eth0_g0_121ksoftirqd/111:11:471
121650400irq/29-eth0_g0_31ksoftirqd/012:03:540
121650400irq/29-eth0_g0_1964-21runrttasks08:27:250
121650400irq/29-eth0_g0_13-21kworker/0:112:16:240
121650400irq/29-eth0_g0_13-21kworker/0:112:10:220
121650400irq/29-eth0_g0_13-21kworker/0:110:47:070
121650400irq/29-eth0_g0_0-21swapper/009:03:050
121400ksoftirqd/1121650irq/29-eth0_g0_08:35:011
1517199391cyclictest30383-21proc_pri08:08:091
1517199391cyclictest12297-21vmstat11:18:121
121750390irq/30-eth0_g0_121ksoftirqd/111:49:411
121750390irq/30-eth0_g0_121ksoftirqd/111:49:411
121750390irq/30-eth0_g0_121ksoftirqd/110:24:091
121750390irq/30-eth0_g0_0-21swapper/112:25:281
121650390irq/29-eth0_g0_31ksoftirqd/009:23:210
121650390irq/29-eth0_g0_23458-21/usr/sbin/munin09:53:061
121650390irq/29-eth0_g0_13-21kworker/0:111:43:360
121650390irq/29-eth0_g0_13-21kworker/0:111:24:300
121650390irq/29-eth0_g0_13-21kworker/0:111:07:470
121650390irq/29-eth0_g0_13-21kworker/0:110:58:430
121650390irq/29-eth0_g0_121ksoftirqd/111:13:490
121390ksoftirqd/1121750irq/30-eth0_g0_09:36:290
121390ksoftirqd/1121750irq/30-eth0_g0_09:16:110
121390ksoftirqd/1121750irq/30-eth0_g0_09:16:110
121390ksoftirqd/1121750irq/30-eth0_g0_08:03:290
121390ksoftirqd/1121750irq/30-eth0_g0_07:47:560
121390ksoftirqd/1121750irq/30-eth0_g0_07:35:130
121390ksoftirqd/1121650irq/29-eth0_g0_10:19:401
121390ksoftirqd/1121650irq/29-eth0_g0_09:59:161
121390ksoftirqd/1121650irq/29-eth0_g0_09:00:171
121750380irq/30-eth0_g0_17838-21taskset07:18:040
121750380irq/30-eth0_g0_1219-21kworker/1:212:37:101
121750380irq/30-eth0_g0_1219-21kworker/1:212:03:061
121750380irq/30-eth0_g0_121ksoftirqd/110:06:111
121750380irq/30-eth0_g0_0-21swapper/110:51:301
121650380irq/29-eth0_g0_31ksoftirqd/012:22:040
121650380irq/29-eth0_g0_31ksoftirqd/009:39:210
121650380irq/29-eth0_g0_1964-21runrttasks09:50:360
121650380irq/29-eth0_g0_13-21kworker/0:112:24:390
121650380irq/29-eth0_g0_13-21kworker/0:110:52:180
121650380irq/29-eth0_g0_13-21kworker/0:110:31:020
121650380irq/29-eth0_g0_13-21kworker/0:110:04:420
121650380irq/29-eth0_g0_121ksoftirqd/112:00:431
121650380irq/29-eth0_g0_0-21swapper/007:03:440
215972370sleep0121650irq/29-eth0_g0_11:58:040
1517199372cyclictest2511-21sed08:28:011
1517199372cyclictest24406-21sort12:08:141
1517199371cyclictest27545-21head10:08:111
1517199371cyclictest26622-21taskset12:18:031
121750370irq/30-eth0_g0_21989-21unixbench_multi07:33:121
121750370irq/30-eth0_g0_1219-21kworker/1:210:39:541
121750370irq/30-eth0_g0_1219-21kworker/1:210:33:081
121750370irq/30-eth0_g0_1219-21kworker/1:209:27:241
121750370irq/30-eth0_g0_1219-21kworker/1:209:13:561
121750370irq/30-eth0_g0_1219-21kworker/1:209:13:561
121750370irq/30-eth0_g0_11312-21awk09:03:061
121650370irq/29-eth0_g0_2944-21swap08:28:090
121650370irq/29-eth0_g0_1964-21runrttasks09:55:400
121650370irq/29-eth0_g0_1964-21runrttasks08:22:390
121650370irq/29-eth0_g0_1964-21runrttasks08:22:390
121650370irq/29-eth0_g0_18916-21/usr/sbin/munin07:23:130
121650370irq/29-eth0_g0_13-21kworker/0:110:17:530
121650370irq/29-eth0_g0_0-21swapper/008:58:050
121370ksoftirqd/114235-21/usr/sbin/munin07:03:011
1517199362cyclictest1787-21unixbench_multi08:23:121
1517199361cyclictest6676-21grep08:43:111
1517199361cyclictest5482-21sed08:38:121
1517199361cyclictest29085-21ntpq08:03:081
1517199361cyclictest263672sleep107:53:031
1517199361cyclictest22781-21ethtool07:38:031
121650360irq/29-eth0_g0_7406-21df_inode08:48:000
121650360irq/29-eth0_g0_4946-21df_abs08:38:020
121650360irq/29-eth0_g0_0-21swapper/007:58:100
121360ksoftirqd/1121650irq/29-eth0_g0_09:31:141
121360ksoftirqd/1121650irq/29-eth0_g0_07:21:531
1517199351cyclictest17004-21seq07:13:081
1517199351cyclictest17004-21seq07:13:081
1517199351cyclictest15960-21grep07:08:141
121750350irq/30-eth0_g0_25140-21sed07:48:001
121650350irq/29-eth0_g0_6509-21proc_pri08:43:080
121650350irq/29-eth0_g0_31720-21timerandwakeup08:13:110
121650350irq/29-eth0_g0_31720-21timerandwakeup08:13:110
121650350irq/29-eth0_g0_31052-21ls08:12:500
121650350irq/29-eth0_g0_1964-21runrttasks08:53:190
121650350irq/29-eth0_g0_1964-21runrttasks07:07:530
121650350irq/29-eth0_g0_0-21swapper/007:28:080
121350ksoftirqd/1121650irq/29-eth0_g0_07:22:551
1517199341cyclictest202602sleep107:28:001
1517199341cyclictest0-21swapper/107:45:261
1517199341cyclictest0-21swapper/107:45:261
121650340irq/29-eth0_g0_31967-21taskset08:14:201
121650340irq/29-eth0_g0_31967-21taskset08:14:201
121650340irq/29-eth0_g0_23716-21latency_hist07:42:500
121650340irq/29-eth0_g0_0-21swapper/007:53:070
121750310irq/30-eth0_g0_27996-21sendmail_mailqu07:58:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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