You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-08-21 - 21:20

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 #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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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.
Unexpectedly long latencies may be caused by SMIs
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 Fri Aug 21, 2026 12:42:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4193583995346,3cyclictest0-21swapper/212:00:592
4193583995346,3cyclictest0-21swapper/212:00:592
4193583995140,8cyclictest114852-21munin-run11:20:012
4193581994839,6cyclictest151ktimers/009:46:030
419358399473,38cyclictest146512-21ssh12:11:012
4193581994637,4cyclictest0-21swapper/009:56:100
4193582994535,5cyclictest1000-21mta-sts-daemon10:06:021
4193583994333,7cyclictest38668-21idleruntime-cro09:15:012
419358399431,33cyclictest58154-21ssh09:46:022
4193582994234,5cyclictest41742-21sendmail09:20:011
4193582994232,7cyclictest154439-21/usr/sbin/munin12:25:011
4193581994227,9cyclictest13955-21ntpq07:55:590
4193582994134,4cyclictest0-21swapper/110:36:041
4193581994134,4cyclictest102682-21sendmail11:00:000
4193581994134,4cyclictest102682-21sendmail11:00:000
4193581994124,14cyclictest27145-21fschecks_time08:40:520
419358199412,32cyclictest52110-21ssh09:35:580
419358199412,32cyclictest52110-21ssh09:35:580
4193581994114,9cyclictest48226-21sh09:30:230
4193581994114,9cyclictest48226-21sh09:30:230
4193582994032,5cyclictest115525-21aten_r2power_vo11:20:501
4193581994034,4cyclictest163573-21munin-run12:40:010
4193581994023,13cyclictest8016-21ntpq07:36:040
4193581994023,12cyclictest148655-21kworker/u8:11+rpciod12:30:570
4193581994013,11cyclictest6990-21sed07:31:100
419358399398,22cyclictest82742-21ssh10:26:072
4193583993933,3cyclictest0-21swapper/208:20:002
4193582993930,6cyclictest421-21dbus-daemon12:15:021
4193582993926,10cyclictest107254-21switchtime11:06:081
4193581993935,2cyclictest0-21swapper/011:25:540
4193581993916,8cyclictest17024-21ntpq08:06:000
4193581993916,8cyclictest17024-21ntpq08:06:000
4193581993914,9cyclictest115417-21hostname11:20:490
4193581993913,11cyclictest98844-21ssh10:52:340
4193581993913,11cyclictest98844-21ssh10:52:340
4193581993913,11cyclictest69633-21sh10:05:410
4193581993912,11cyclictest157013-21ssh12:28:340
4193583993830,5cyclictest27138-21fschecks_time08:40:522
4193583993829,4cyclictest0-21swapper/211:51:132
4193583993827,7cyclictest3397920-21cups-browsed12:21:562
4193582993831,4cyclictest163594-21sendmail12:40:011
4193582993830,5cyclictest87459-21munin-plugin-st10:35:011
4193582993830,5cyclictest50947-21cron09:35:011
4193582993830,5cyclictest50947-21cron09:35:011
4193582993829,6cyclictest2621-21sendmail07:20:001
4193582993829,6cyclictest2621-21sendmail07:20:001
4193582993829,5cyclictest0-21swapper/111:40:161
4193582993827,9cyclictest97689-21needreboot10:50:561
4193582993827,9cyclictest97689-21needreboot10:50:561
4193581993831,4cyclictest130105-21ssh11:45:010
4193581993825,8cyclictest493-21ntpq07:11:020
4193581993825,8cyclictest493-21ntpq07:11:020
4193581993825,8cyclictest34966-21ntpq09:05:570
4193581993825,8cyclictest30540-21ntpq08:51:030
4193581993825,8cyclictest19993-21ntpq08:16:000
4193581993824,9cyclictest33586-21ntpq09:01:040
4193581993824,8cyclictest110078-21ntpq11:11:070
4193581993814,8cyclictest47189-21sh09:27:530
4193581993814,7cyclictest35603-21diskmemload11:33:480
4193581993813,7cyclictest623-21sshd09:45:010
4193581993813,7cyclictest623-21sshd09:45:010
4193581993813,7cyclictest35603-21diskmemload09:12:270
4193581993812,8cyclictest35603-21diskmemload12:20:360
4193581993811,8cyclictest10968-21ntpq07:45:590
4193581993810,7cyclictest151381-21munin-run12:20:010
4193583993731,3cyclictest0-21swapper/211:15:022
4193583993729,5cyclictest128162-21sh11:40:572
4193581993723,8cyclictest140467-21ntpq12:01:020
4193581993723,8cyclictest140467-21ntpq12:01:020
4193581993722,12cyclictest76515-21ntpq10:16:010
4193581993721,3cyclictest82541-21ntpq10:25:590
4193581993717,14cyclictest0-21swapper/010:01:050
4193581993716,7cyclictest35603-21diskmemload12:12:490
4193581993716,7cyclictest114408-21ssh11:18:370
4193581993716,16cyclictest3397920-21cups-browsed09:54:130
4193581993716,16cyclictest3397920-21cups-browsed09:54:130
4193581993714,8cyclictest135806-21ssh11:53:550
4193581993714,7cyclictest35603-21diskmemload09:16:240
4193581993714,7cyclictest130464-21sh11:45:240
4193581993714,7cyclictest108249-21ssh11:08:200
4193581993714,17cyclictest0-21swapper/008:10:570
4193581993714,16cyclictest0-21swapper/007:21:040
4193581993713,8cyclictest93149-21ssh10:43:450
4193581993712,9cyclictest142943-21awk12:05:530
4193581993712,10cyclictest44834-21awk09:25:010
4193581993710,8cyclictest81388-21munin-run10:25:010
4193581993710,8cyclictest24563-21ntpq08:31:020
419358399368,5cyclictest171rcu_preempt10:46:032
419358399368,5cyclictest171rcu_preempt10:46:032
4193583993627,6cyclictest1002-21mta-sts-daemon10:54:282
4193583993627,6cyclictest1002-21mta-sts-daemon10:54:282
4193583993627,5cyclictest104037-21proc_pri11:01:042
419358399360,5cyclictest36-21ksoftirqd/210:40:592
4193582993630,3cyclictest0-21swapper/109:05:011
4193582993628,5cyclictest31092-21munin-plugin-st08:55:011
4193582993627,6cyclictest55828-21unixbench_singl09:41:171
4193582993627,6cyclictest55828-21unixbench_singl09:41:171
4193582993627,5cyclictest421-21dbus-daemon10:03:451
4193581993627,4cyclictest85640-21ntpq10:31:010
4193581993624,8cyclictest21458-21ntpq08:20:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional