You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-08-13 - 01:09

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 #7, 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 50 highest latencies:
System rack7slot7s.osadl.org (updated Wed Aug 12, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1505629468,8sleep20-21swapper/207:06:302
1499929465,9sleep00-21swapper/007:05:450
1515928569,12sleep30-21swapper/307:07:483
1503028272,6sleep10-21swapper/107:06:101
309042660,0sleep00-21swapper/011:37:090
15419992827,1cyclictest0-21swapper/311:31:593
15419992826,1cyclictest39-21ksoftirqd/311:52:043
1541399280,27cyclictest0-21swapper/109:17:261
1541699260,26cyclictest0-21swapper/211:44:012
1541999240,2cyclictest0-21swapper/310:09:033
15413992423,1cyclictest38150irq/131-snd_hda12:16:471
15413992422,1cyclictest0-21swapper/111:21:571
15413992422,1cyclictest0-21swapper/111:21:561
1541999232,19cyclictest846-21seq09:43:443
1541699230,23cyclictest0-21swapper/209:48:142
1541399235,18cyclictest0-21swapper/110:58:071
1541399233,19cyclictest0-21swapper/109:46:251
15413992321,1cyclictest0-21swapper/111:15:131
15413992319,4cyclictest0-21swapper/110:30:001
1541999223,0cyclictest141rcu_preempt11:28:123
15419992221,1cyclictest0-21swapper/309:14:483
15419992219,2cyclictest39-21ksoftirqd/309:15:193
1541999220,21cyclictest0-21swapper/310:45:023
1541699220,22cyclictest0-21swapper/211:49:052
1541699220,22cyclictest0-21swapper/209:36:052
1541399229,9cyclictest225-21systemd-journal09:25:431
1541399229,10cyclictest0-21swapper/110:54:021
15413992214,8cyclictest0-21swapper/111:40:161
1541399220,2cyclictest0-21swapper/112:20:181
15419992117,1cyclictest39-21ksoftirqd/310:15:433
15413992119,1cyclictest0-21swapper/111:50:381
15413992115,3cyclictest225-21systemd-journal10:34:221
15413992112,7cyclictest13492-21df_abs10:10:151
15413992110,11cyclictest0-21swapper/111:27:141
15409992118,2cyclictest29959-21ssh12:35:130
120032210,0sleep00-21swapper/010:47:360
1541999201,18cyclictest0-21swapper/310:20:263
1541999200,1cyclictest141rcu_preempt12:10:293
1541399201,8cyclictest0-21swapper/108:30:131
15413992018,1cyclictest8429-21diskmemload11:06:571
15413992018,1cyclictest8429-21diskmemload10:17:261
15413992016,4cyclictest8429-21diskmemload11:58:291
15413992015,4cyclictest12256-21ssh12:05:161
15413992012,8cyclictest0-21swapper/109:38:511
15413992012,4cyclictest8429-21diskmemload12:11:531
1541399201,18cyclictest31056-21ntp_kernel_err10:20:231
1541699190,0cyclictest141rcu_preempt09:55:052
1541399199,10cyclictest0-21swapper/109:33:381
15413991916,2cyclictest8429-21diskmemload09:59:281
15413991915,3cyclictest19097-21date11:50:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional