You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-08-20 - 03:23
OSADL QA Farm

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 system in rack #e, slot #6

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 rackeslot6.osadl.org (updated Wed Aug 19, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
277934599148137,8cyclictest2820596-21latency_hist09:15:010
277934799145135,7cyclictest2823792-21latency_hist09:25:011
277934799140126,11cyclictest2880545-21latency_hist12:20:001
277934799138126,8cyclictest2809196-21latency_hist08:40:011
277934599135128,5cyclictest2804402-21kworker/u8:0+flush-179:008:25:000
277934799131120,8cyclictest1213033-21systemd-journal10:50:241
277934799123118,4cyclictest2789553-21kworker/u8:3+flush-179:007:45:251
277934599123113,7cyclictest2815829-21latency_hist09:00:010
277934599123111,9cyclictest2784257-21apt-get07:25:000
277934799121115,4cyclictest2854534-21kworker/u8:0+events_unbound11:00:261
277934599121112,6cyclictest2819010-21latency_hist09:10:010
277934599120111,6cyclictest2854809-21/usr/sbin/munin11:00:240
277934799119114,3cyclictest2830467-21kworker/u8:3+events_unbound10:00:191
277934599116104,9cyclictest510-21rs:main0
277934799115109,4cyclictest2843401-21kworker/u8:0+events_unbound10:45:161
2779345991141,109cyclictest1-21systemd10:30:010
277934599113102,7cyclictest2851411-21kworker/u8:2+flush-179:011:00:010
277934799112103,6cyclictest2867336-21apt-get11:38:101
277934799111106,4cyclictest2804402-21kworker/u8:0+events_unbound08:30:131
277934599111101,8cyclictest2875479-21kworker/u8:2+flush-179:012:20:140
277934599110103,5cyclictest2860942-21latency_hist11:20:010
27793459910799,4cyclictest2804402-21kworker/u8:0+flush-179:008:25:170
27793459910697,6cyclictest2863078-21kworker/u8:1+flush-179:012:05:250
27793459910595,7cyclictest2810793-21latency_hist08:45:020
27793459910595,6cyclictest2817397-21kworker/u8:1+flush-179:009:40:250
27793459910493,8cyclictest2811029-21kworker/u8:2+events_unbound10:05:000
27793479910399,3cyclictest2786131-21kworker/u8:0+events_unbound07:38:451
27793459910291,8cyclictest2812381-21latency_hist08:50:000
27793459910194,5cyclictest2863078-21kworker/u8:1+flush-179:011:55:230
27793479910095,4cyclictest2817397-21kworker/u8:1+events_unbound09:25:211
27793459910093,5cyclictest2759694-21kworker/u8:1+flush-179:007:10:230
27793459910089,8cyclictest1213033-21systemd-journal07:55:200
2779347999994,4cyclictest2817397-21kworker/u8:1+events_unbound09:05:281
2779347999985,10cyclictest2843401-21kworker/u8:0+flush-179:010:35:011
2779345999991,5cyclictest2830467-21kworker/u8:3+flush-179:010:10:250
2779347999887,7cyclictest510-21rs:main1
2779347999886,10cyclictest2872564-21apt-get11:55:131
2779345999884,7cyclictest2851411-21kworker/u8:2+flush-179:011:05:180
2779347999792,4cyclictest2843401-21kworker/u8:0+events_unbound10:43:461
2779345999788,6cyclictest2869127-21kworker/u8:0+flush-179:012:25:240
2779345999788,6cyclictest2842072-21/usr/sbin/munin10:20:170
2779345999691,3cyclictest2817397-21kworker/u8:1+flush-179:009:25:230
2779347999590,4cyclictest2811029-21kworker/u8:2+events_unbound08:59:451
2779345999586,6cyclictest2779179-21latency_hist07:10:010
2779347999487,4cyclictest2830467-21kworker/u8:3+flush-179:010:05:241
2779345999487,4cyclictest2781790-21kworker/u8:2+flush-179:007:35:240
2779345999484,7cyclictest2811029-21kworker/u8:2+flush-179:009:45:230
2779347999287,4cyclictest2848176-21kworker/u8:3+events_unbound11:20:191
2779347999287,4cyclictest2846577-21kworker/u8:2+events_unbound10:38:471
2779347999281,9cyclictest2869127-21kworker/u8:0+flush-179:012:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional