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2026-07-20 - 14:35

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 highest latencies:
System rack3slot5s.osadl.org (updated Mon Jul 20, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
475721490sleep0121650irq/29-eth0_g0_09:46:400
1211120ksoftirqd/1121750irq/30-eth0_g0_07:47:591
1211070ksoftirqd/1121650irq/29-eth0_g0_10:28:021
121730ksoftirqd/1121750irq/30-eth0_g0_11:41:551
121690ksoftirqd/1121750irq/30-eth0_g0_11:45:491
121690ksoftirqd/1121750irq/30-eth0_g0_11:45:491
121650ksoftirqd/1121650irq/29-eth0_g0_11:59:071
240522590sleep1121750irq/30-eth0_g0_11:03:151
181362570chrt121750irq/30-eth0_g0_08:27:580
121530ksoftirqd/1121750irq/30-eth0_g0_09:58:391
121750520irq/30-eth0_g0_3042499cyclictest11:33:180
121520ksoftirqd/1121650irq/29-eth0_g0_11:30:220
121510ksoftirqd/1121750irq/30-eth0_g0_11:51:441
121510ksoftirqd/1121750irq/30-eth0_g0_11:51:441
121510ksoftirqd/1121750irq/30-eth0_g0_11:11:531
121750500irq/30-eth0_g0_3042499cyclictest12:22:570
121750500irq/30-eth0_g0_3042499cyclictest12:12:110
121750500irq/30-eth0_g0_3042499cyclictest11:22:200
121650500irq/29-eth0_g0_3042499cyclictest11:22:560
121500ksoftirqd/1121750irq/30-eth0_g0_10:26:411
121500ksoftirqd/1121750irq/30-eth0_g0_09:14:351
121500ksoftirqd/1121650irq/29-eth0_g0_11:10:360
30424994921cyclictest13-21kworker/0:111:14:390
3042499492cyclictest24517-21unixbench_multi08:53:040
121650490irq/29-eth0_g0_3042499cyclictest10:41:080
121490ksoftirqd/1121750irq/30-eth0_g0_09:05:311
121490ksoftirqd/1121650irq/29-eth0_g0_09:30:211
3042499482cyclictest23103-21proc_pri08:47:590
121750480irq/30-eth0_g0_3042499cyclictest10:59:110
121650480irq/29-eth0_g0_3042499cyclictest12:18:010
121650480irq/29-eth0_g0_3042499cyclictest12:18:010
121480ksoftirqd/13042499cyclictest10:08:010
121480ksoftirqd/1121750irq/30-eth0_g0_09:37:531
3042499471cyclictest1350kworker/0:109:54:020
121650470irq/29-eth0_g0_3042499cyclictest09:04:530
121470ksoftirqd/13042499cyclictest11:52:550
121470ksoftirqd/13042499cyclictest07:56:360
121470ksoftirqd/1121750irq/30-eth0_g0_12:37:071
121470ksoftirqd/1121750irq/30-eth0_g0_11:24:561
121470ksoftirqd/1121750irq/30-eth0_g0_09:46:491
121470ksoftirqd/1121750irq/30-eth0_g0_09:27:221
121750460irq/30-eth0_g0_3042499cyclictest11:46:170
121750460irq/30-eth0_g0_3042499cyclictest11:46:170
121750460irq/30-eth0_g0_3042499cyclictest11:02:550
121650460irq/29-eth0_g0_3042499cyclictest12:31:230
121650460irq/29-eth0_g0_3042499cyclictest10:37:000
121650460irq/29-eth0_g0_3042499cyclictest10:16:070
121650460irq/29-eth0_g0_3042499cyclictest09:15:250
121460ksoftirqd/13042499cyclictest07:32:530
121460ksoftirqd/1121750irq/30-eth0_g0_11:53:451
121460ksoftirqd/1121750irq/30-eth0_g0_11:30:311
121460ksoftirqd/1121650irq/29-eth0_g0_12:15:261
121460ksoftirqd/1121650irq/29-eth0_g0_11:17:521
30424994518cyclictest20419-21/usr/sbin/munin08:37:550
30424994517cyclictest1964-21runrttasks07:10:530
157592450sleep0121750irq/30-eth0_g0_10:31:350
121650450irq/29-eth0_g0_121ksoftirqd/109:09:120
121450ksoftirqd/1121750irq/30-eth0_g0_10:40:241
121450ksoftirqd/1121750irq/30-eth0_g0_10:07:471
121450ksoftirqd/1121750irq/30-eth0_g0_10:03:001
121450ksoftirqd/1121650irq/29-eth0_g0_10:58:481
121450ksoftirqd/1121650irq/29-eth0_g0_07:48:020
3042499441cyclictest5263-21missed_timers09:47:550
3042499441cyclictest5263-21missed_timers09:47:550
133192440sleep0121750irq/30-eth0_g0_10:21:410
121440ksoftirqd/1121750irq/30-eth0_g0_12:30:151
121430ksoftirqd/13042499cyclictest12:13:250
121430ksoftirqd/13042499cyclictest10:45:330
121430ksoftirqd/13042499cyclictest10:04:510
121430ksoftirqd/13042499cyclictest09:17:590
121430ksoftirqd/13042499cyclictest08:12:540
121430ksoftirqd/13042499cyclictest08:02:590
121430ksoftirqd/13042499cyclictest08:02:590
121430ksoftirqd/13042499cyclictest07:29:120
121430ksoftirqd/1121650irq/29-eth0_g0_12:25:031
121430ksoftirqd/1121650irq/29-eth0_g0_12:09:181
121430ksoftirqd/1121650irq/29-eth0_g0_10:33:401
121750420irq/30-eth0_g0_3042499cyclictest12:32:570
121750420irq/30-eth0_g0_3042499cyclictest09:28:150
121420ksoftirqd/13042499cyclictest12:05:360
121420ksoftirqd/13042499cyclictest11:37:590
121420ksoftirqd/13042499cyclictest10:49:220
121420ksoftirqd/13042499cyclictest09:41:450
121420ksoftirqd/13042499cyclictest09:23:100
121420ksoftirqd/13042499cyclictest08:46:170
121420ksoftirqd/13042499cyclictest08:23:050
121420ksoftirqd/13042499cyclictest08:18:020
121420ksoftirqd/13042499cyclictest08:11:190
121420ksoftirqd/13042499cyclictest07:59:160
121420ksoftirqd/13042499cyclictest07:18:320
121420ksoftirqd/13042499cyclictest07:14:090
121420ksoftirqd/13042499cyclictest07:14:090
121420ksoftirqd/1121750irq/30-eth0_g0_11:50:100
121420ksoftirqd/1121750irq/30-eth0_g0_11:50:100
121420ksoftirqd/1121750irq/30-eth0_g0_07:38:021
121650410irq/29-eth0_g0_31ksoftirqd/009:59:500
121650410irq/29-eth0_g0_1964-21runrttasks07:07:280
121410ksoftirqd/13042499cyclictest12:02:190
121410ksoftirqd/13042499cyclictest10:52:520
121410ksoftirqd/13042499cyclictest10:22:460
121410ksoftirqd/13042499cyclictest09:33:420
121410ksoftirqd/13042499cyclictest07:43:530
121410ksoftirqd/13042499cyclictest07:43:530
121410ksoftirqd/13042499cyclictest07:40:040
121650400irq/29-eth0_g0_12252-21tail08:03:011
121650400irq/29-eth0_g0_12252-21tail08:03:011
117942400sleep1121750irq/30-eth0_g0_10:13:091
30426993924cyclictest1964-21runrttasks09:10:411
30426993924cyclictest1964-21runrttasks08:01:571
30426993923cyclictest1964-21runrttasks09:56:041
3042699391cyclictest0-21swapper/108:15:191
121750390irq/30-eth0_g0_1219-21kworker/1:212:07:031
121750390irq/30-eth0_g0_1219-21kworker/1:209:32:501
3042699386cyclictest3558-21sendmail_mailst07:28:001
30426993823cyclictest1964-21runrttasks09:52:171
30426993823cyclictest1964-21runrttasks09:52:171
3042699381cyclictest9736-21wc12:17:581
3042699381cyclictest9736-21wc12:17:581
121750380irq/30-eth0_g0_30966-21taskset09:20:441
121380ksoftirqd/13042499cyclictest08:59:380
30426993721cyclictest1964-21runrttasks10:47:171
121750370irq/30-eth0_g0_24516-21unixbench_multi08:53:041
121750370irq/30-eth0_g0_16668-21entropy08:22:531
121650370irq/29-eth0_g0_30151-21runrttasks07:04:381
121650370irq/29-eth0_g0_23042-21ntp_offset08:47:571
121370ksoftirqd/1121750irq/30-eth0_g0_11:33:011
121370ksoftirqd/1121750irq/30-eth0_g0_07:43:021
121370ksoftirqd/1121750irq/30-eth0_g0_07:43:021
30426993621cyclictest1964-21runrttasks10:18:581
3042699361cyclictest22103-21grep08:43:041
3042699361cyclictest19944-21cat10:47:561
3042699361cyclictest1964-21runrttasks11:13:431
121750360irq/30-eth0_g0_1964-21runrttasks07:37:081
121650360irq/29-eth0_g0_2329-21awk07:22:581
3042699352cyclictest25244-21df_inode08:57:531
3042699352cyclictest15435-21df_inode08:17:531
3042699351cyclictest13536-21grep08:08:031
121750350irq/30-eth0_g0_1219-21kworker/1:210:52:491
3042699342cyclictest31983-21irqstats07:12:561
3042699342cyclictest31983-21irqstats07:12:561
3042699341cyclictest9542-21ntpq07:52:581
3042699341cyclictest19606-21unixbench_multi08:33:021
3042699341cyclictest18442-21grep08:28:021
121750330irq/30-eth0_g0_0-21swapper/107:17:581
121650330irq/29-eth0_g0_20346-21df_inode08:37:531
121650330irq/29-eth0_g0_0-21swapper/008:33:030
121750320irq/30-eth0_g0_30575-21chrt07:07:511
121650300irq/29-eth0_g0_1964-21runrttasks07:24:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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