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2025-07-01 - 08:07

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 50 highest latencies:
System rack2slot7s.osadl.org (updated Tue Jul 01, 2025 00:41:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3370270995847,7cyclictest3496187-21unixbench-2d23:18:052
3370269995636,17cyclictest3434300-21idleruntime-cro21:50:011
3370269995241,7cyclictest3511115-21idleruntime-cro23:40:011
3370269995042,5cyclictest3551812-21ssh00:40:011
3370269995038,7cyclictest3507642-21cron23:35:011
337026999492,17cyclictest3547069-21ntpq00:32:531
3370270994840,5cyclictest422-21dbus-daemon21:20:012
3370268994836,9cyclictest3497110-21idleruntime-cro23:20:010
3370269994737,6cyclictest1-21systemd22:50:011
3370269994735,9cyclictest3538188-21ls00:20:011
337026999473,35cyclictest657-21snmpd00:27:541
3370269994725,18cyclictest0-21swapper/100:00:021
3370269994635,7cyclictest3408157-21fschecks_count21:12:471
3370269994629,14cyclictest421-21avahi-daemon23:08:351
3370269994623,19cyclictest0-21swapper/122:18:041
337026999462,16cyclictest3412187-21ssh21:18:011
337026999462,15cyclictest3386199-21ntpq20:02:531
3370270994537,5cyclictest3469125-21systemd-run22:40:012
3370269994531,9cyclictest1590858-21cups-browsed22:12:171
337026999452,6cyclictest3372671-21ntpq19:17:511
337026999451,11cyclictest3371168-21ntpq19:12:541
3370268994540,2cyclictest0-21swapper/022:12:470
3370268994527,13cyclictest12450irq/32-eth023:47:540
3370270994435,4cyclictest0-21swapper/223:47:542
3370270994434,6cyclictest421-21avahi-daemon23:41:182
337026999449,3cyclictest271ktimers/122:37:561
337026999443,6cyclictest3392144-21ntpq20:22:551
3370269994433,8cyclictest3397240-21sendmail20:40:011
337026999442,5cyclictest3395174-21ntpq20:32:561
337026999441,11cyclictest3384603-21ntpq19:57:511
3370270994334,6cyclictest3453612-21needreboot22:17:572
3370270994333,7cyclictest1-21systemd22:00:022
337026999435,29cyclictest657-21snmpd23:22:551
337026999433,6cyclictest3520159-21ssh23:52:571
3370269994335,5cyclictest3448205-21idleruntime-cro22:10:011
3370269994335,5cyclictest3448205-21idleruntime-cro22:10:011
337026999432,7cyclictest3374261-21ntpq19:23:021
337026999432,6cyclictest3513242-21ntpq23:43:021
3370269994317,23cyclictest3423080-21unixbench_multi21:33:091
3370268994336,4cyclictest3536624-21ntp_kernel_err00:17:510
337026999428,4cyclictest3441987-21ssh22:01:181
3370269994233,5cyclictest3465603-21sh22:35:001
3370269994230,7cyclictest0-21swapper/122:42:541
337026999422,7cyclictest3399650-21ntpq20:47:521
337026999421,11cyclictest3457276-21ntpq22:22:581
337026999421,11cyclictest3434722-21ssh21:50:331
337026999421,10cyclictest3483379-21ssh23:00:091
337026999421,10cyclictest3480743-21ssh22:57:101
337026999421,10cyclictest3424968-21ssh21:37:041
337026999421,10cyclictest3393702-21ntpq20:27:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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