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2026-03-28 - 04:23

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Sat Mar 28, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
755521060sleep0121650irq/29-eth0_g0_23:42:570
121970ksoftirqd/1121750irq/30-eth0_g0_21:42:171
26952930sleep1121650irq/29-eth0_g0_23:23:311
95092890sleep1121650irq/29-eth0_g0_21:36:481
121880ksoftirqd/1121750irq/30-eth0_g0_20:25:091
208722770sleep1121750irq/30-eth0_g0_00:36:011
121740ksoftirqd/1121750irq/30-eth0_g0_23:41:171
121670ksoftirqd/1121750irq/30-eth0_g0_22:02:370
99882600sleep1121750irq/30-eth0_g0_23:52:451
170762540sleep0121650irq/29-eth0_g0_00:20:140
73332530sleep1121650irq/29-eth0_g0_19:15:111
121510ksoftirqd/1121750irq/30-eth0_g0_22:00:221
121650500irq/29-eth0_g0_31ksoftirqd/019:05:060
121480ksoftirqd/1121750irq/30-eth0_g0_23:17:521
121480ksoftirqd/1121750irq/30-eth0_g0_00:01:181
121480ksoftirqd/1121650irq/29-eth0_g0_21:12:210
59782470sleep0121650irq/29-eth0_g0_21:23:310
12852470sleep0121750irq/30-eth0_g0_23:16:380
121650470irq/29-eth0_g0_31ksoftirqd/022:47:440
121650450irq/29-eth0_g0_31ksoftirqd/022:50:050
121450ksoftirqd/1121750irq/30-eth0_g0_22:53:341
121450ksoftirqd/1121650irq/29-eth0_g0_21:34:250
121440ksoftirqd/1121750irq/30-eth0_g0_21:24:321
560899431cyclictest9644-21wc19:25:061
121750430irq/30-eth0_g0_203502sleep122:22:551
121750430irq/30-eth0_g0_1219-21kworker/1:221:10:231
121750430irq/30-eth0_g0_1219-21kworker/1:200:30:241
121750430irq/30-eth0_g0_1219-21kworker/1:200:30:241
121750430irq/30-eth0_g0_121ksoftirqd/120:44:531
121650430irq/29-eth0_g0_1875-21runrttasks23:11:530
121650430irq/29-eth0_g0_1875-21runrttasks21:16:000
121650420irq/29-eth0_g0_31ksoftirqd/023:27:530
121420ksoftirqd/1121750irq/30-eth0_g0_22:55:050
121420ksoftirqd/1121650irq/29-eth0_g0_19:05:131
560899412cyclictest5273-21ls23:34:531
121750410irq/30-eth0_g0_1219-21kworker/1:222:33:351
121750410irq/30-eth0_g0_1219-21kworker/1:222:33:351
121750410irq/30-eth0_g0_0-21swapper/121:58:281
121650410irq/29-eth0_g0_1875-21runrttasks20:42:480
121650410irq/29-eth0_g0_13-21kworker/0:123:48:570
121650410irq/29-eth0_g0_13-21kworker/0:100:29:120
121410ksoftirqd/1121650irq/29-eth0_g0_22:39:171
121410ksoftirqd/1121650irq/29-eth0_g0_22:39:171
121410ksoftirqd/1121650irq/29-eth0_g0_22:27:251
121750400irq/30-eth0_g0_1219-21kworker/1:221:29:261
121750400irq/30-eth0_g0_1219-21kworker/1:221:29:261
121750400irq/30-eth0_g0_121ksoftirqd/122:18:161
121750400irq/30-eth0_g0_121ksoftirqd/121:30:161
121750400irq/30-eth0_g0_121ksoftirqd/100:21:441
121650400irq/29-eth0_g0_31ksoftirqd/023:51:170
121650400irq/29-eth0_g0_31ksoftirqd/021:43:400
121650400irq/29-eth0_g0_13-21kworker/0:123:55:130
121650400irq/29-eth0_g0_13-21kworker/0:121:50:410
121650400irq/29-eth0_g0_11162-21df21:45:040
121400ksoftirqd/1121750irq/30-eth0_g0_19:50:290
121400ksoftirqd/1121750irq/30-eth0_g0_00:13:440
560899391cyclictest25835-21wc22:45:081
121750390irq/30-eth0_g0_1219-21kworker/1:223:59:521
121750390irq/30-eth0_g0_1219-21kworker/1:223:28:091
121650390irq/29-eth0_g0_31ksoftirqd/023:36:240
121650390irq/29-eth0_g0_31ksoftirqd/000:33:560
121650390irq/29-eth0_g0_31ksoftirqd/000:33:560
121650390irq/29-eth0_g0_21260-21latency_hist00:39:520
121650390irq/29-eth0_g0_15378-21cat00:15:040
121650390irq/29-eth0_g0_13-21kworker/0:122:15:080
121650390irq/29-eth0_g0_121ksoftirqd/100:27:431
121390ksoftirqd/1121750irq/30-eth0_g0_22:57:241
121390ksoftirqd/1121750irq/30-eth0_g0_22:40:150
121390ksoftirqd/1121750irq/30-eth0_g0_22:39:110
121390ksoftirqd/1121750irq/30-eth0_g0_22:39:110
121390ksoftirqd/1121750irq/30-eth0_g0_22:30:010
121390ksoftirqd/1121750irq/30-eth0_g0_22:30:010
121390ksoftirqd/1121750irq/30-eth0_g0_22:20:220
121390ksoftirqd/1121750irq/30-eth0_g0_22:09:560
121390ksoftirqd/1121750irq/30-eth0_g0_21:09:210
121390ksoftirqd/1121750irq/30-eth0_g0_20:18:240
121390ksoftirqd/1121750irq/30-eth0_g0_00:09:100
121390ksoftirqd/1121750irq/30-eth0_g0_00:09:100
121390ksoftirqd/1121750irq/30-eth0_g0_00:02:010
121750380irq/30-eth0_g0_121ksoftirqd/123:49:141
121750380irq/30-eth0_g0_0-21swapper/123:35:141
121650380irq/29-eth0_g0_9165-21/usr/sbin/munin21:35:120
121650380irq/29-eth0_g0_31ksoftirqd/023:05:240
121650380irq/29-eth0_g0_1875-21runrttasks23:34:340
121650380irq/29-eth0_g0_1875-21runrttasks23:00:410
121650380irq/29-eth0_g0_1875-21runrttasks22:26:070
121650380irq/29-eth0_g0_121ksoftirqd/123:09:561
121380ksoftirqd/1121750irq/30-eth0_g0_21:27:000
121380ksoftirqd/1121750irq/30-eth0_g0_21:27:000
121380ksoftirqd/1121650irq/29-eth0_g0_19:11:311
560899371cyclictest30438-21/usr/sbin/munin20:50:051
560899371cyclictest23424-21awk20:20:131
560899371cyclictest17134-21grep19:55:121
560899371cyclictest16697-21cat19:54:531
121750370irq/30-eth0_g0_1219-21kworker/1:222:41:401
121750370irq/30-eth0_g0_1219-21kworker/1:221:45:571
121750370irq/30-eth0_g0_121ksoftirqd/121:53:301
121650370irq/29-eth0_g0_560799cyclictest19:20:050
121650370irq/29-eth0_g0_26032-21grep20:30:180
121650370irq/29-eth0_g0_23512-21unixbench_multi20:20:140
121650370irq/29-eth0_g0_1875-21runrttasks23:22:310
121650370irq/29-eth0_g0_1875-21runrttasks19:30:050
121650370irq/29-eth0_g0_14248-21latency_hist19:44:540
121650370irq/29-eth0_g0_13-21kworker/0:122:08:000
121650370irq/29-eth0_g0_13-21kworker/0:122:08:000
121650370irq/29-eth0_g0_0-21swapper/020:49:540
121370ksoftirqd/129881-21sed23:00:141
121370ksoftirqd/120420-21wc20:10:031
121370ksoftirqd/1121650irq/29-eth0_g0_00:09:411
121370ksoftirqd/1121650irq/29-eth0_g0_00:09:411
560899361cyclictest31095-21grep23:05:151
560899361cyclictest29082-21taskset20:45:061
560899361cyclictest25572-21taskset20:30:061
560899361cyclictest19652-21ps20:05:111
560899361cyclictest11162-21awk19:30:141
560899360cyclictest0-21swapper/121:04:281
121750360irq/30-eth0_g0_17993-21taskset22:14:021
121750360irq/30-eth0_g0_0-21swapper/100:10:431
121650360irq/29-eth0_g0_20993-21timerandwakeup20:10:120
121650360irq/29-eth0_g0_1875-21runrttasks20:49:550
121650360irq/29-eth0_g0_1875-21runrttasks20:28:080
121650360irq/29-eth0_g0_1875-21runrttasks19:25:420
121650360irq/29-eth0_g0_1875-21runrttasks19:15:290
121650360irq/29-eth0_g0_1875-21runrttasks19:11:480
121650360irq/29-eth0_g0_14820-21sendmail_mailqu19:45:110
121650360irq/29-eth0_g0_14820-21sendmail_mailqu19:45:110
121650360irq/29-eth0_g0_13508-21latency21:55:060
121650360irq/29-eth0_g0_121ksoftirqd/121:16:421
121650360irq/29-eth0_g0_121ksoftirqd/120:00:521
560899352cyclictest22267-21unixbench_multi20:15:131
560899351cyclictest31639-21if_err_eth020:55:051
560899351cyclictest2167-21head21:05:151
560899351cyclictest12299-21processes19:35:121
121750350irq/30-eth0_g0_1219-21kworker/1:200:14:571
121750350irq/30-eth0_g0_0-21swapper/122:05:141
121750350irq/30-eth0_g0_0-21swapper/122:05:141
121650350irq/29-eth0_g0_27083-21sendmail_mailqu20:35:130
121650350irq/29-eth0_g0_1875-21runrttasks20:56:230
121650350irq/29-eth0_g0_1875-21runrttasks19:37:260
121650340irq/29-eth0_g0_32740-21df21:00:040
121650340irq/29-eth0_g0_18335-21ntp_kernel_err20:00:080
121650340irq/29-eth0_g0_17157-21seq19:55:130
560899331cyclictest85402sleep119:20:101
560899331cyclictest13192-21df_abs19:40:051
560899330cyclictest0-21swapper/119:45:001
560899330cyclictest0-21swapper/119:45:001
121650330irq/29-eth0_g0_19723-21find20:05:120
121750300irq/30-eth0_g0_560899cyclictest20:35:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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