You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-10 - 09:03

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 #1, slot #2

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 rack1slot2s.osadl.org (updated Fri Apr 10, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2222224637,0sleep20-21swapper/218:55:082
2222524331,0sleep00-21swapper/018:55:100
304450350,0irq/25-eth10-21swapper/318:56:223
2218023322,0sleep10-21swapper/118:54:431
339960,0migration/38728-21sh00:09:393
339960,0migration/3473-21sh00:04:273
339960,0migration/33406-21sh21:25:133
339960,0migration/32942-21sh23:08:323
339960,0migration/328292-21sh22:03:393
339960,0migration/326476-21needreboot21:39:123
339960,0migration/318113-21sh23:57:463
339960,0migration/316918-21sh00:15:073
29725060,0irq/27-eth0-tx-17127-21munin-node19:19:180
29725060,0irq/27-eth0-tx-14208-21munin-node20:54:100
29715060,0irq/26-eth0-rx-9935-21cut21:09:133
29715060,0irq/26-eth0-rx-21934-21gltestperf21:19:093
29715060,0irq/26-eth0-rx-20439-21ssh22:39:083
29715060,0irq/26-eth0-rx-19795-21interrupts23:59:093
29715060,0irq/26-eth0-rx-14004-21cut22:14:123
29715060,0irq/26-eth0-rx-13265-21irqrtprio22:34:133
226169966,0cyclictest0-21swapper/023:53:590
149960,0migration/04137-21sh21:27:130
8215050,0irq/24-0000:00:3604-21cat19:08:552
4150,0ktimersoftd/00-21swapper/021:53:410
339950,0migration/3826-21munin-node20:19:113
339950,0migration/38158-21kthreadcore20:24:113
339950,0migration/38026-21kthreadcore19:09:123
339950,0migration/36930-21runrttasks19:59:093
339950,0migration/33454-21df_abs23:29:083
339950,0migration/331842-21kthreadcore23:24:123
339950,0migration/330156-21kthreadcore20:39:123
339950,0migration/328296-21latency_hist22:23:553
339950,0migration/327002-21taskset22:20:483
339950,0migration/32569-21kthreadcore19:54:103
339950,0migration/322122-21kthreadcore23:19:103
339950,0migration/32143-21munin-node21:44:173
339950,0migration/317873-21gltestperf19:19:093
339950,0migration/310159-21sh22:29:193
29725050,0irq/27-eth0-tx-32701-21cut21:04:142
29725050,0irq/27-eth0-tx-32264-21munin-node20:19:170
29725050,0irq/27-eth0-tx-28362-21munin-node22:24:182
29725050,0irq/27-eth0-tx-21115-21kthreadcore23:19:102
29725050,0irq/27-eth0-tx-10775-21munin-node23:54:052
29725050,0irq/27-eth0-tx-0-21swapper/223:29:092
29725050,0irq/27-eth0-tx-0-21swapper/223:04:132
29725050,0irq/27-eth0-tx-0-21swapper/222:45:522
29725050,0irq/27-eth0-tx-0-21swapper/221:39:192
29725050,0irq/27-eth0-tx-0-21swapper/200:04:082
29725050,0irq/27-eth0-tx-0-21swapper/020:49:130
29725050,0irq/27-eth0-tx-0-21swapper/020:32:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional