You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-26 - 12:12

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #5, slot #4

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Tue May 26, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221339124300,3sleep12213393-21kthreadcore19:05:501
2215251997358,10cyclictest1704890-21systemd-journal23:10:471
2215249996748,16cyclictest2375553-21ntpq21:45:530
2215249996640,23cyclictest2232722-21diskstats19:25:450
2215251996457,4cyclictest2366826-21kworker/u8:3+events_unbound23:26:011
2215251996450,10cyclictest1704890-21systemd-journal22:30:471
2215251996450,10cyclictest1704890-21systemd-journal22:30:461
2215249996452,9cyclictest2251982-21apt-get19:45:000
2215249996339,21cyclictest2476333-21diskstats23:30:450
2215251996152,7cyclictest2297155-21kworker/u8:1+events_unbound20:31:131
2215251995850,6cyclictest2262175-21base6419:55:011
2215249995746,9cyclictest2454664-21ntpq23:05:540
2215251995650,4cyclictest2366826-21kworker/u8:3+events_unbound23:31:001
2215251995551,3cyclictest2158197-21kworker/u8:0+flush-8:019:45:451
2215251995447,5cyclictest2480548-21kworker/u8:2+events_unbound00:20:571
2215249995346,5cyclictest2540141-21apt-get00:31:360
2215251995242,8cyclictest2499735-21ntpq23:50:571
2215251995242,7cyclictest1704890-21systemd-journal22:20:471
2215249995235,15cyclictest2511112-21sshd00:05:470
2215249995235,15cyclictest2511112-21sshd00:05:470
2215249995227,22cyclictest2524366-21ntpq00:15:520
2215251995138,9cyclictest1704890-21systemd-journal20:55:471
2215251995046,3cyclictest2297155-21kworker/u8:1+flush-8:020:40:471
2215254994930,16cyclictest1704890-21systemd-journal21:25:012
2215251994944,4cyclictest2366826-21kworker/u8:3+flush-8:023:16:011
2215251994940,6cyclictest1704890-21systemd-journal21:00:471
2215249994930,16cyclictest2326769-21latency_hist21:00:010
24019112480,4sleep10-21swapper/122:15:471
2215251994843,4cyclictest2232193-21kworker/u8:3+flush-8:020:45:451
2215251994737,8cyclictest2286336-21ntpq20:15:531
2215249994723,9cyclictest2541230-21diskstats00:35:450
2215251994640,5cyclictest2158197-21kworker/u8:0+events_unbound21:50:491
2215251994637,6cyclictest2445719-21latency_hist23:00:011
2215249994626,17cyclictest2272797-21fschecks_time20:05:470
2215251994541,3cyclictest2183655-21kworker/u8:2+flush-8:020:06:001
2215251994539,4cyclictest2435863-21kworker/u8:0+events_unbound22:50:581
2215249994536,7cyclictest2465688-21latency_hist23:20:000
2215251994439,4cyclictest2480548-21kworker/u8:2+flush-8:023:56:001
2215251994438,4cyclictest2158197-21kworker/u8:0+events_unbound21:05:451
2215251994434,7cyclictest2391313-21latency_hist22:05:011
2215251994338,4cyclictest2232193-21kworker/u8:3+flush-8:020:35:461
2215251994337,4cyclictest2183655-21kworker/u8:2+events_unbound20:00:441
2215251994336,5cyclictest2366826-21kworker/u8:3+flush-8:023:40:561
2215249994332,8cyclictest2281162-21ntpq20:10:540
2215249994325,5cyclictest2470239-21unixbench_multi23:21:020
2215249994322,6cyclictest2471436-21fschecks_count23:25:460
2215251994236,5cyclictest2158197-21kworker/u8:0+flush-8:019:15:551
2215251994232,8cyclictest2251986-21latency_hist19:45:011
2215249994223,2cyclictest2220155-21apt-key19:15:000
2215251994134,5cyclictest2509623-21ntpq00:00:561
2215249994031,7cyclictest2331715-21latency_hist21:05:000
2215251993933,4cyclictest2391334-21kworker/u8:1+events_unbound22:35:551
2215251993931,5cyclictest2158197-21kworker/u8:0+flush-8:019:26:001
2215254993829,7cyclictest2460621-21gpgv23:15:012
2215254993824,12cyclictest2386689-21aten2_r5power_c22:00:452
2215254993817,8cyclictest2540513-21base6400:35:012
2215251993834,3cyclictest2158197-21kworker/u8:0+flush-8:019:36:011
2215251993832,4cyclictest2183655-21kworker/u8:2+flush-8:020:25:501
2215251993830,6cyclictest2220132-21latency_hist19:15:011
2215249993826,9cyclictest2340940-21ntpq21:10:550
2215249993826,9cyclictest2340940-21ntpq21:10:540
2215251993733,3cyclictest2366826-21kworker/u8:3+events_unbound23:21:001
2215251993732,4cyclictest2158197-21kworker/u8:0+events_unbound21:45:561
2215251993732,3cyclictest2391334-21kworker/u8:1+flush-8:023:35:501
2215251993729,6cyclictest2183655-21kworker/u8:2+flush-8:019:20:481
2215249993726,8cyclictest2336651-21latency_hist21:10:010
2215249993726,8cyclictest2311200-21ntpq20:40:590
2215249993719,3cyclictest0-21swapper/019:45:490
2215254993624,10cyclictest2529900-21unixbench_singl00:21:022
2215254993616,8cyclictest2252242-21cat19:45:012
2215251993632,3cyclictest2183655-21kworker/u8:2+events_unbound19:30:521
2215251993632,3cyclictest2183655-21kworker/u8:2+events_unbound19:30:511
2215251993632,3cyclictest2158197-21kworker/u8:0+events_unbound21:55:441
2215251993630,4cyclictest2505539-21kworker/u8:3+events_unbound00:10:581
2215251993625,7cyclictest1704890-21systemd-journal21:40:471
2215249993627,6cyclictest2491222-21grep23:45:440
2215249993623,11cyclictest2530636-21apt-key00:25:020
221524999361,33cyclictest2440800-21kworker/0:1+events23:35:570
221524999361,32cyclictest1-21systemd22:35:000
221524999361,32cyclictest1-21systemd22:34:590
2215254993522,2cyclictest2506135-21fschecks_time00:00:472
2215254993521,2cyclictest2302661-21fschecks_count20:35:452
2215251993531,3cyclictest2232193-21kworker/u8:3+events_unbound19:56:011
2215251993429,3cyclictest2366222-21unixbench_singl21:36:011
2215251993427,5cyclictest2158197-21kworker/u8:0+flush-8:021:30:551
2215251993328,3cyclictest2158197-21kworker/u8:0+events_unbound22:10:551
2215251993326,5cyclictest2435863-21kworker/u8:0+events_unbound23:00:471
2215251993326,5cyclictest2415723-21kworker/u8:2+flush-8:022:40:551
2215249993328,3cyclictest2397108-21irqcore22:10:490
2215249993326,5cyclictest1704890-21systemd-journal21:40:010
2215249993323,8cyclictest2449745-21ntpq23:00:530
2215254993226,4cyclictest2311581-21unixbench_multi20:41:022
2215254993210,2cyclictest22724042cat20:05:002
2215251993227,4cyclictest2480548-21kworker/u8:2+flush-8:023:45:571
2215251993227,3cyclictest2535439-21kworker/u8:1+events_unbound00:35:431
2215251993227,3cyclictest2232193-21kworker/u8:3+events_unbound21:11:021
2215251993227,3cyclictest2232193-21kworker/u8:3+events_unbound21:11:021
2215249993226,5cyclictest2232193-21kworker/u8:3+flush-8:020:35:590
22591732310,14sleep20-21swapper/219:50:502
2215251993127,3cyclictest2435863-21kworker/u8:0+events_unbound23:05:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional