You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-16 - 11:48

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 Jun 16, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1960788997568,5cyclictest2206424-21kworker/u8:2+events_unbound23:30:371
1960788997365,6cyclictest2101263-21kworker/u8:0+flush-8:022:05:411
1960788997062,4cyclictest2251243-21kworker/u8:4+flush-8:000:25:261
1960788996962,5cyclictest2251243-21kworker/u8:4+events_unbound00:35:381
1960788996960,7cyclictest2052513-21kworker/u8:3+flush-8:021:05:401
1960788996862,4cyclictest2037253-21kworker/u8:0+events_unbound20:30:441
1960788996860,6cyclictest2076871-21kworker/u8:2+events_unbound21:40:381
1960788996762,4cyclictest2206424-21kworker/u8:2+flush-8:023:35:461
1960788996761,4cyclictest2002451-21kworker/u8:2+flush-8:020:00:411
1960788996758,7cyclictest2037253-21kworker/u8:0+flush-8:020:25:391
1960788996660,5cyclictest2086994-21kworker/u8:1+events_unbound21:35:411
1960788996660,5cyclictest2086994-21kworker/u8:1+events_unbound21:35:411
1960788996660,4cyclictest2251243-21kworker/u8:4+flush-8:000:05:421
1960788996660,4cyclictest2251243-21kworker/u8:4+events_unbound00:20:391
1960788996660,4cyclictest2052513-21kworker/u8:3+flush-8:020:40:451
1960788996659,5cyclictest2076871-21kworker/u8:2+flush-8:021:25:401
1960788996655,8cyclictest1965651-21latency_hist19:15:011
1960788996560,4cyclictest1928932-21kworker/u8:2+events_unbound19:30:431
1960788996560,3cyclictest1987252-21kworker/u8:0+events_unbound19:40:411
1960788996558,5cyclictest2101263-21kworker/u8:0+events_unbound23:10:401
1960786996557,6cyclictest2245108-21ntpq23:50:360
1960786996542,9cyclictest2100656-21ntpq21:25:350
1960788996458,5cyclictest1928932-21kworker/u8:2+flush-8:019:20:401
1960788996458,4cyclictest2235581-21kworker/u8:3+events_unbound23:50:411
1960788996356,6cyclictest1987252-21kworker/u8:0+flush-8:019:35:381
1960788996356,5cyclictest2101263-21kworker/u8:0+events_unbound23:25:411
1960786996346,6cyclictest1704890-21systemd-journal00:30:380
1960788996255,6cyclictest1928932-21kworker/u8:2+flush-8:019:15:411
1960788996255,5cyclictest2101263-21kworker/u8:0+flush-8:023:00:441
1960788996157,3cyclictest2052513-21kworker/u8:3+flush-8:020:55:251
1960788996156,3cyclictest2125561-21kworker/u8:1+events_unbound22:00:361
1960788996156,3cyclictest2002451-21kworker/u8:2+events_unbound19:50:431
1960788996154,4cyclictest1967812-21kworker/u8:1+flush-8:019:45:371
1960788996153,6cyclictest2002451-21kworker/u8:2+flush-8:019:55:401
1960788996055,3cyclictest2145989-21kworker/u8:2+events_unbound22:30:431
1960788996053,5cyclictest2206424-21kworker/u8:2+events_unbound23:20:261
1960788996053,5cyclictest2206424-21kworker/u8:2+events_unbound23:20:251
1960786996050,7cyclictest2065821-21ntpq20:50:370
1960786996049,8cyclictest2236216-21apt-get23:45:220
1960792995953,4cyclictest2111778-21kworker/u8:3+flush-8:022:10:422
1960788995953,5cyclictest2251236-21kworker/u8:0+flush-8:000:10:301
1960788995953,4cyclictest2052513-21kworker/u8:3+events_unbound21:15:271
1960788995951,5cyclictest1967812-21kworker/u8:1+events_unbound20:05:391
1960788995851,6cyclictest2111778-21kworker/u8:3+events_unbound21:55:381
1960788995851,5cyclictest1960628-21kworker/u8:3+flush-8:020:20:391
1960788995850,5cyclictest2111778-21kworker/u8:3+events_unbound21:50:391
1960786995850,5cyclictest2037253-21kworker/u8:0+flush-8:020:30:420
19715962570,6chrt0-21swapper/019:15:360
1960788995751,4cyclictest2125561-21kworker/u8:1+flush-8:022:20:271
1960786995747,8cyclictest2171726-21/usr/sbin/munin22:40:370
1960788995650,4cyclictest2251243-21kworker/u8:4+events_unbound00:30:401
1960788995649,5cyclictest2206424-21kworker/u8:2+flush-8:023:55:381
1960788995646,7cyclictest2031814-21latency_hist20:20:011
1960786995650,4cyclictest2002451-21kworker/u8:2+flush-8:020:35:430
1960788995550,4cyclictest2190456-21kworker/u8:3+events_unbound23:00:011
1960788995550,3cyclictest1704890-21systemd-journal22:50:371
1960788995548,5cyclictest2145989-21kworker/u8:2+flush-8:022:15:421
21522022540,5sleep20-21swapper/222:20:312
1960788995448,4cyclictest2206424-21kworker/u8:2+events_unbound23:45:361
1960788995347,4cyclictest2206424-21kworker/u8:2+events_unbound23:15:421
1960788995346,5cyclictest1967812-21kworker/u8:1+flush-8:021:00:411
1960788995343,8cyclictest2235045-21ntpq23:40:381
1960786995348,4cyclictest2251243-21kworker/u8:4+flush-8:000:25:430
1960786995346,5cyclictest1977484-21latency_hist19:25:010
1960788995146,4cyclictest2052513-21kworker/u8:3+flush-8:020:50:391
1960788995145,4cyclictest1967812-21kworker/u8:1+events_unbound20:10:431
1960788995144,5cyclictest2145989-21kworker/u8:2+flush-8:022:25:401
1960786995143,6cyclictest2081581-21latency_hist21:10:010
1960786995142,7cyclictest2032593-21diskstats20:20:270
1960786995142,6cyclictest2021964-21latency_hist20:10:000
1960786995141,7cyclictest2156881-21apt-get22:25:230
1960788995041,7cyclictest2269929-21ntpq00:15:371
1960786995041,6cyclictest1704890-21systemd-journal23:10:370
1960792994930,7cyclictest2240872-21apt-get23:50:012
1960788994942,5cyclictest2101263-21kworker/u8:0+flush-8:022:45:401
1960788994941,6cyclictest1967812-21kworker/u8:1+events_unbound19:25:381
1960792994842,4cyclictest1928932-21kworker/u8:2+flush-8:019:10:312
1960788994842,3cyclictest2101263-21kworker/u8:0+flush-8:022:10:341
1960788994837,8cyclictest2060906-21ntpq20:45:391
1960786994840,6cyclictest2206424-21kworker/u8:2+events_unbound00:00:010
1960786994835,10cyclictest2135620-21ntpq22:00:370
1960792994637,6cyclictest1704890-21systemd-journal19:35:012
1960788994641,4cyclictest2166043-21kworker/u8:3+flush-8:022:40:401
1960786994639,5cyclictest2125561-21kworker/u8:1+flush-8:022:20:010
22677772450,3sleep375-21kworker/3:1-events00:15:343
1960788994541,3cyclictest2076871-21kworker/u8:2+flush-8:021:45:291
1960788994539,4cyclictest2086994-21kworker/u8:1+events_unbound21:30:361
1960788994539,4cyclictest2052513-21kworker/u8:3+flush-8:021:10:401
1960786994535,7cyclictest2256014-21latency_hist00:05:010
1960792994433,8cyclictest1704890-21systemd-journal22:55:002
1960788994440,3cyclictest2101263-21kworker/u8:0+flush-8:022:35:271
1960788994439,3cyclictest2052513-21kworker/u8:3+flush-8:021:20:401
1960786994441,2cyclictest8550irq/124-ahci[0000:00:12.0]21:35:400
1960786994441,2cyclictest8550irq/124-ahci[0000:00:12.0]21:35:390
1960786994439,4cyclictest2251243-21kworker/u8:4+flush-8:000:20:320
1960786994434,8cyclictest2092260-21diskstats21:20:290
1960786994434,7cyclictest1704890-21systemd-journal22:45:360
1960786994334,7cyclictest2206424-21kworker/u8:2+flush-8:023:40:350
1960792994231,8cyclictest2126857-21cp21:55:022
1960788994235,5cyclictest2002451-21kworker/u8:2+flush-8:020:35:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional