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2025-11-20 - 12:33

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
Click here to display the system's profile data or here to proceed to next system.
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 Thu Nov 20, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1934021610sleep1121650irq/29-eth0_g0_21:43:001
2542421050sleep1121750irq/30-eth0_g0_22:07:201
121910ksoftirqd/1121750irq/30-eth0_g0_22:45:041
249602880sleep1121750irq/30-eth0_g0_00:17:531
121860ksoftirqd/1121650irq/29-eth0_g0_22:00:140
121850ksoftirqd/1121650irq/29-eth0_g0_00:39:501
121840ksoftirqd/1121650irq/29-eth0_g0_21:09:510
121800ksoftirqd/1121750irq/30-eth0_g0_00:13:390
134782750sleep0121750irq/30-eth0_g0_23:30:110
275882690sleep1121750irq/30-eth0_g0_00:29:501
121680ksoftirqd/1121750irq/30-eth0_g0_23:53:070
326462600sleep1121650irq/29-eth0_g0_22:35:441
326462600sleep1121650irq/29-eth0_g0_22:35:441
237532570sleep1121750irq/30-eth0_g0_00:13:091
177762570sleep1121750irq/30-eth0_g0_23:49:511
121510ksoftirqd/1121750irq/30-eth0_g0_19:35:320
121500ksoftirqd/1121750irq/30-eth0_g0_23:45:110
121500ksoftirqd/1121750irq/30-eth0_g0_23:00:050
121490ksoftirqd/1121650irq/29-eth0_g0_21:48:510
217142460sleep1121650irq/29-eth0_g0_21:52:001
121750450irq/30-eth0_g0_1219-21kworker/1:221:47:231
121450ksoftirqd/1121750irq/30-eth0_g0_23:28:041
21038994432cyclictest15932-21taskset23:40:071
121750430irq/30-eth0_g0_1219-21kworker/1:222:26:281
121650430irq/29-eth0_g0_20299-21runrttasks19:05:100
121650430irq/29-eth0_g0_20299-21runrttasks19:05:100
21038994230cyclictest7994-21grep20:55:101
21038994230cyclictest22229-21grep00:05:131
21038994229cyclictest4761-21ntp_states22:55:111
21038994229cyclictest29335-21grep20:10:141
21038994229cyclictest27604-21grep22:15:131
21038994229cyclictest10912-21diskmemload00:30:071
121750420irq/30-eth0_g0_1219-21kworker/1:221:11:531
121420ksoftirqd/1121750irq/30-eth0_g0_22:35:230
121420ksoftirqd/1121750irq/30-eth0_g0_22:35:230
21038994129cyclictest9120-21taskset21:00:121
21038994129cyclictest2880-21processes20:35:101
21038994129cyclictest2029-21snmpd21:25:151
21038994129cyclictest1880-21unixbench_singl20:30:161
21038994128cyclictest5262-21ntp_states20:45:081
21038994128cyclictest5262-21ntp_states20:45:081
21038994128cyclictest28114-21grep20:05:121
21038994128cyclictest22714-21tail21:55:131
21038994128cyclictest18307-21cat21:39:511
21038994128cyclictest1118-21grep20:29:511
21038994128cyclictest10237-21ps21:05:101
21038994127cyclictest30317-21cat20:15:101
121750410irq/30-eth0_g0_1219-21kworker/1:223:16:421
121750410irq/30-eth0_g0_1219-21kworker/1:223:08:561
121650410irq/29-eth0_g0_13-21kworker/0:123:21:060
121410ksoftirqd/1121750irq/30-eth0_g0_22:31:060
21038994027cyclictest1894-21runrttasks19:20:281
121750400irq/30-eth0_g0_1219-21kworker/1:223:02:311
121750400irq/30-eth0_g0_1219-21kworker/1:222:33:471
121750400irq/30-eth0_g0_1219-21kworker/1:221:21:361
121650400irq/29-eth0_g0_8021-21unixbench_singl20:55:100
121650400irq/29-eth0_g0_13-21kworker/0:123:38:070
121650400irq/29-eth0_g0_13-21kworker/0:121:11:130
21038993919cyclictest1894-21runrttasks19:26:221
121750390irq/30-eth0_g0_1219-21kworker/1:223:53:241
121750390irq/30-eth0_g0_1219-21kworker/1:223:30:141
121750390irq/30-eth0_g0_1219-21kworker/1:223:21:081
121750390irq/30-eth0_g0_1219-21kworker/1:222:21:261
121750390irq/30-eth0_g0_1219-21kworker/1:222:02:351
121750390irq/30-eth0_g0_1219-21kworker/1:221:31:431
121750390irq/30-eth0_g0_1219-21kworker/1:200:01:361
121750390irq/30-eth0_g0_10912-21diskmemload23:12:551
121650390irq/29-eth0_g0_27134-21unixbench_singl00:25:130
121650390irq/29-eth0_g0_1894-21runrttasks23:43:570
121650390irq/29-eth0_g0_13-21kworker/0:123:58:410
121650390irq/29-eth0_g0_13-21kworker/0:123:58:410
121650390irq/29-eth0_g0_13-21kworker/0:123:05:050
121650390irq/29-eth0_g0_13-21kworker/0:122:09:350
121650390irq/29-eth0_g0_13-21kworker/0:121:58:400
121650390irq/29-eth0_g0_13-21kworker/0:100:22:110
121650390irq/29-eth0_g0_13-21kworker/0:100:09:290
21038993824cyclictest19482-21seq23:55:091
21038993824cyclictest19482-21seq23:55:091
121750380irq/30-eth0_g0_20590-21grep19:05:141
121750380irq/30-eth0_g0_20590-21grep19:05:141
121750380irq/30-eth0_g0_1219-21kworker/1:221:19:511
121750380irq/30-eth0_g0_121ksoftirqd/123:35:111
121650380irq/29-eth0_g0_1894-21runrttasks22:51:010
121650380irq/29-eth0_g0_16587-21unixbench_singl21:30:120
121650380irq/29-eth0_g0_13-21kworker/0:121:20:450
121650380irq/29-eth0_g0_13-21kworker/0:100:37:430
121380ksoftirqd/1121750irq/30-eth0_g0_22:25:000
21038993725cyclictest0-21swapper/120:02:061
121750370irq/30-eth0_g0_25611-21ntpdc00:20:081
121750370irq/30-eth0_g0_1219-21kworker/1:222:54:371
121750370irq/30-eth0_g0_1219-21kworker/1:222:12:441
121650370irq/29-eth0_g0_30543-21grep20:15:130
121650370irq/29-eth0_g0_28561-21ntp_kernel_err22:20:070
121650370irq/29-eth0_g0_19532-21latency_hist21:44:510
121650370irq/29-eth0_g0_13-21kworker/0:123:26:500
121650370irq/29-eth0_g0_13-21kworker/0:123:13:540
121650370irq/29-eth0_g0_13-21kworker/0:122:17:560
121650370irq/29-eth0_g0_13-21kworker/0:121:50:000
121650370irq/29-eth0_g0_13-21kworker/0:121:34:550
121650370irq/29-eth0_g0_13-21kworker/0:121:28:480
121650370irq/29-eth0_g0_13-21kworker/0:100:31:060
121650370irq/29-eth0_g0_13-21kworker/0:100:14:520
121650370irq/29-eth0_g0_13-21kworker/0:100:02:290
121650370irq/29-eth0_g0_0-21swapper/023:18:040
121750360irq/30-eth0_g0_1219-21kworker/1:222:39:551
121650360irq/29-eth0_g0_31213-21df_abs20:20:050
121650360irq/29-eth0_g0_26674-21interrupts20:00:070
121650360irq/29-eth0_g0_13-21kworker/0:122:56:160
121650360irq/29-eth0_g0_13-21kworker/0:122:44:230
121650360irq/29-eth0_g0_13-21kworker/0:121:15:510
121650360irq/29-eth0_g0_0-21swapper/021:00:100
121750350irq/30-eth0_g0_0-21swapper/120:41:141
121650350irq/29-eth0_g0_6094-21runrttasks20:50:030
121650350irq/29-eth0_g0_4864-21/usr/sbin/munin20:45:100
121650350irq/29-eth0_g0_4864-21/usr/sbin/munin20:45:100
121650350irq/29-eth0_g0_28004-21taskset20:05:100
121650350irq/29-eth0_g0_25638-21cat19:54:510
121650350irq/29-eth0_g0_23592-21cat19:34:510
121650350irq/29-eth0_g0_13-21kworker/0:122:49:440
121650350irq/29-eth0_g0_1164-21/usr/sbin/munin20:30:080
121650350irq/29-eth0_g0_1054-21munin-run20:29:500
121650350irq/29-eth0_g0_0-21swapper/022:09:520
21038993429cyclictest6733-21unixbench_multi20:50:141
21038993422cyclictest0-21swapper/119:16:251
121650340irq/29-eth0_g0_25971-21runrttasks19:55:290
121650340irq/29-eth0_g0_24933-21runrttasks19:48:400
121650340irq/29-eth0_g0_21305-21runrttasks19:12:070
121650340irq/29-eth0_g0_21305-21runrttasks19:12:070
121650330irq/29-eth0_g0_3640-21/usr/sbin/munin20:40:070
121650330irq/29-eth0_g0_29129-21open_inodes20:10:120
121650330irq/29-eth0_g0_24360-21runrttasks19:42:470
121650330irq/29-eth0_g0_22960-21runrttasks19:28:580
121650330irq/29-eth0_g0_22025-21runrttasks19:19:450
121650330irq/29-eth0_g0_0-21swapper/019:23:260
21038993226cyclictest1894-21runrttasks19:13:411
21038993226cyclictest1894-21runrttasks19:13:411
21038993223cyclictest1894-21runrttasks20:20:211
121750320irq/30-eth0_g0_1894-21runrttasks19:50:171
121750320irq/30-eth0_g0_1894-21runrttasks19:31:381
121650320irq/29-eth0_g0_1894-21runrttasks19:59:431
121650320irq/29-eth0_g0_1894-21runrttasks19:36:341
121650320irq/29-eth0_g0_0-21swapper/020:35:030
21038993024cyclictest1894-21runrttasks19:41:151
21038993017cyclictest0-21swapper/119:49:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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