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2026-01-09 - 07:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack2slot7s.osadl.org (updated Thu Jan 08, 2026 19:55:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1648299997337,32cyclictest0-21swapper/017:39:510
1648299996658,5cyclictest2456220-21sh18:10:030
1648299996658,5cyclictest2456220-21sh18:10:030
1648300996148,9cyclictest1955393-21fstime17:54:221
1648300996132,24cyclictest1881140-21sh17:40:361
1648299996138,20cyclictest1651536-21kworker/u8:7+xprtiod17:40:250
1648300996051,6cyclictest2456227-21tee18:10:031
1648300996051,6cyclictest2456227-21tee18:10:031
1648299995928,28cyclictest1953837-21execl17:49:580
1648299995927,29cyclictest2462493-21sh18:10:190
1648301995849,5cyclictest2454244-21sh18:09:572
1648301995849,5cyclictest2454244-21sh18:09:572
1648300995845,9cyclictest2464811-21sh18:10:251
1648301995644,6cyclictest2458931-21tee18:10:112
1648299995539,11cyclictest1956917-21sshd17:57:250
1648299995539,11cyclictest1956917-21sshd17:57:250
1648301995344,5cyclictest1937994-21sh17:42:582
1648301994738,6cyclictest1871980-21systemd17:40:022
1648300994730,14cyclictest1953836-21execl17:49:471
1648300994723,21cyclictest0-21swapper/117:40:011
1648301994637,6cyclictest1955338-21Run17:52:002
1648300994638,5cyclictest2534573-21systemd-run18:30:011
1648299994636,8cyclictest1651350-21cron17:15:000
1648300994520,22cyclictest1835514-21spawn17:35:021
1648300994520,21cyclictest1956937-21fstime17:57:481
1648300994520,21cyclictest1956937-21fstime17:57:481
1648299994538,5cyclictest1781085-21spawn17:35:010
164830199442,33cyclictest1653706-21fstime17:24:582
1648300994422,18cyclictest0-21swapper/118:40:011
1648300994418,22cyclictest2147170-21spawn18:03:331
1648301994332,5cyclictest0-21swapper/217:05:022
1648301994332,5cyclictest0-21swapper/217:05:022
1648301994331,6cyclictest2336549-21spawn18:04:172
164830099433,6cyclictest1655917-21ntpq17:29:551
164830099431,12cyclictest1648927-21unixbench_singl17:05:081
1648299994221,4cyclictest2530206-21kworker/u8:15-xprtiod18:25:030
1648301994133,5cyclictest1953835-21execl17:49:442
1648301994133,5cyclictest1656191-21switchtime17:30:022
164830099411,4cyclictest2535861-21ntpq18:34:571
164830099411,4cyclictest1651150-21ntpq17:14:541
1648299994134,5cyclictest1648287-21ntpq17:05:010
1648299994134,5cyclictest1648287-21ntpq17:05:010
1648301994033,4cyclictest1833390-21spawn17:35:002
164830099401,9cyclictest2531056-21entropy18:19:451
164830199392,34cyclictest1957337-21pipe17:59:552
164830199392,34cyclictest1957337-21pipe17:59:552
164830099391,4cyclictest1652811-21ntpq17:19:541
1648300993913,22cyclictest0-21swapper/117:24:561
1648299993933,4cyclictest2534557-21basename18:30:010
164830099381,9cyclictest2532524-21df_inode18:24:461
1648299993732,3cyclictest0-21swapper/017:50:110
1648301993528,3cyclictest0-21swapper/217:15:012
1648301993527,5cyclictest636-21in:imuxsock18:30:012
1648301993425,6cyclictest1649858-21munin-run17:10:002
164830099348,22cyclictest1648236-21latency_hist17:05:031
164830099348,22cyclictest1648236-21latency_hist17:05:031
1648301993328,2cyclictest0-21swapper/217:20:012
1648301993326,5cyclictest351ktimers/218:19:532
1648301993325,5cyclictest2532920-21ntpq18:24:552
1648299993326,4cyclictest1979273-21spawn18:02:530
1648299993322,7cyclictest0-21swapper/018:40:010
1648301993224,3cyclictest0-21swapper/218:40:012
1648299993119,10cyclictest1166-21mta-sts-daemon18:19:450
1648299992922,3cyclictest0-21swapper/017:24:560
1648299992921,6cyclictest1167-21mta-sts-daemon18:34:580
164829999291,10cyclictest1651536-21kworker/u8:7+rpciod17:29:540
1648301992820,5cyclictest2535465-21fschecks_count18:34:482
1648299992721,3cyclictest0-21swapper/017:19:590
1648299992614,9cyclictest369-21systemd-journal17:10:020
164830299185,6cyclictest0-21swapper/317:49:573
164830299183,9cyclictest0-21swapper/317:55:583
164830299183,9cyclictest0-21swapper/317:55:583
164830299173,9cyclictest0-21swapper/318:10:073
164830299164,6cyclictest0-21swapper/317:38:253
164830299163,8cyclictest0-21swapper/318:10:043
164830299163,8cyclictest0-21swapper/318:10:043
164830299162,8cyclictest0-21swapper/317:34:553
164830299161,8cyclictest0-21swapper/318:29:573
164830299144,6cyclictest0-21swapper/317:41:133
164830299144,6cyclictest0-21swapper/317:19:543
164830299142,7cyclictest0-21swapper/318:01:013
164830299141,6cyclictest0-21swapper/317:14:523
164830299131,7cyclictest0-21swapper/317:05:033
164830299131,7cyclictest0-21swapper/317:05:033
164830299131,6cyclictest0-21swapper/318:19:543
164830299125,5cyclictest0-21swapper/317:50:103
164830299123,5cyclictest0-21swapper/318:35:013
164830299121,6cyclictest0-21swapper/318:39:553
164830299121,6cyclictest0-21swapper/318:24:523
164830299121,6cyclictest0-21swapper/317:24:503
164830299102,5cyclictest0-21swapper/317:09:573
164830299101,6cyclictest0-21swapper/317:29:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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