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2026-01-09 - 17:13

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 376 highest latencies:
System rack2slot7s.osadl.org (updated Fri Jan 09, 2026 07:55:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2839857997668,5cyclictest3644929-21rm06:10:080
2839858996842,22cyclictest3663135-21multi.sh06:10:551
2839858996838,5cyclictest3137534-21od05:43:141
2839858996737,5cyclictest3641137-21expr06:09:561
2839859996234,24cyclictest3646256-21sh06:10:112
2839859996134,23cyclictest3641332-21sh06:09:562
2839859996033,5cyclictest3108641-21sh05:42:022
2839857995746,8cyclictest3086270-21od05:41:050
2839859995527,6cyclictest3328860-21spawn06:03:312
2839859995448,3cyclictest0-21swapper/205:25:022
2839859995448,3cyclictest0-21swapper/205:25:022
2839857995446,5cyclictest2972684-21spawn05:35:010
2839858995344,6cyclictest2972684-21spawn05:34:551
2839857995231,17cyclictest3641673-21sort06:09:570
2839858995042,5cyclictest3064321-21cron05:40:011
2839857995034,6cyclictest12450irq/32-eth005:39:530
2839857994936,10cyclictest3146013-21execl05:50:030
2839857994635,5cyclictest2844206-21whetstone-doubl05:20:000
2839859994536,6cyclictest3719006-21cron06:25:012
2839859994527,15cyclictest3062906-21sh05:39:542
2839858994436,5cyclictest3146014-21execl05:50:021
2839858994436,5cyclictest2843042-21unixbench_multi05:15:021
2839858994436,5cyclictest2843042-21unixbench_multi05:15:021
2839858994435,6cyclictest2719922-21cups-browsed06:02:511
283985799441,36cyclictest0-21swapper/006:24:530
2839859994335,5cyclictest3146012-21execl05:50:032
2839857994320,16cyclictest3557824-21syscall06:04:540
2839859994233,6cyclictest3147086-21execl05:50:112
2839859994134,4cyclictest3717526-21cron06:20:012
2839857994034,3cyclictest3716052-21kworker/u8:14-xprtiod06:35:010
2839857994034,3cyclictest3716052-21kworker/u8:14-xprtiod06:35:010
2839859993930,5cyclictest3028922-21latency_hist05:35:022
2839858993931,5cyclictest3147590-21fstime05:55:011
2839859993832,3cyclictest0-21swapper/205:15:012
2839859993832,3cyclictest0-21swapper/205:15:012
2839859993830,5cyclictest3723485-21systemd-run06:40:012
2839859993829,6cyclictest3149085-21fstime05:57:002
2839859993729,5cyclictest3720976-21unixbench_singl06:30:032
2839859993729,5cyclictest3720976-21unixbench_singl06:30:032
2839858993730,4cyclictest2844702-21unixbench_multi05:20:011
2839859993627,6cyclictest2841391-21latency_hist05:10:022
2839858993631,2cyclictest0-21swapper/106:40:001
2839858993627,5cyclictest2840131-21unixbench_multi05:05:021
2839857993629,3cyclictest0-21swapper/005:50:360
2839858993527,5cyclictest2846331-21unixbench_singl05:25:021
2839858993527,5cyclictest2846331-21unixbench_singl05:25:021
2839858993513,13cyclictest1167-21mta-sts-daemon06:19:531
2839857993527,4cyclictest0-21swapper/005:24:540
2839857993527,4cyclictest0-21swapper/005:24:540
2839857993526,6cyclictest3643127-21kworker/u8:10+xprtiod06:20:010
2839857993524,8cyclictest3722541-21users06:35:030
2839857993423,8cyclictest2840437-21/usr/sbin/munin05:09:450
2839857993420,11cyclictest3720311-21ntpq06:29:530
2839857993420,11cyclictest3720311-21ntpq06:29:530
2839859993320,10cyclictest351ktimers/205:19:542
2839858993327,3cyclictest0-21swapper/106:35:001
2839858993327,3cyclictest0-21swapper/106:35:001
2839857993324,5cyclictest3149064-21fstime05:56:130
2839857993319,11cyclictest2840044-21unixbench-2d05:05:020
283985799331,29cyclictest2719922-21cups-browsed05:14:480
283985799331,29cyclictest2719922-21cups-browsed05:14:480
2839858993226,3cyclictest0-21swapper/106:30:011
2839858993226,3cyclictest0-21swapper/106:30:011
2839857993222,7cyclictest2846545-21fstime05:28:560
283985999311,26cyclictest2847276-21pipe05:29:572
283985899311,27cyclictest3149394-21pipe05:59:541
2839858993022,5cyclictest3719005-21cron06:25:011
2839859992923,3cyclictest0-21swapper/206:35:012
2839859992923,3cyclictest0-21swapper/206:35:012
2839859992921,5cyclictest2840049-21unixbench-2d05:05:022
2839858992923,3cyclictest0-21swapper/105:10:011
2839858992823,2cyclictest0-21swapper/105:30:001
283986099196,6cyclictest0-21swapper/305:49:573
283986099193,9cyclictest0-21swapper/306:10:003
283986099173,6cyclictest0-21swapper/305:24:553
283986099173,6cyclictest0-21swapper/305:24:553
283986099165,8cyclictest0-21swapper/305:39:543
283986099162,8cyclictest0-21swapper/306:11:413
283986099161,9cyclictest0-21swapper/306:01:273
283986099161,8cyclictest0-21swapper/305:34:533
283986099151,6cyclictest0-21swapper/305:09:573
283986099148,4cyclictest421rcuc/305:05:013
283986099148,4cyclictest0-21swapper/305:42:013
283986099143,8cyclictest0-21swapper/305:55:103
283986099141,6cyclictest0-21swapper/306:24:553
283986099141,5cyclictest0-21swapper/306:29:523
283986099141,5cyclictest0-21swapper/306:29:523
283986099137,4cyclictest0-21swapper/306:40:013
283986099134,6cyclictest0-21swapper/305:55:013
283986099132,8cyclictest0-21swapper/305:27:093
283986099123,5cyclictest0-21swapper/305:15:013
283986099123,5cyclictest0-21swapper/305:15:013
283986099112,6cyclictest0-21swapper/305:20:003
283986099112,5cyclictest0-21swapper/306:15:023
283986099102,5cyclictest0-21swapper/306:35:013
283986099102,5cyclictest0-21swapper/306:35:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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