You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-04 - 22:50

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 #b, 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.

Note that this system runs a non-RT kernel.
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: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7s.osadl.org (updated Sun May 03, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30883217478,1725sleep024639-1kworker/0:1H11:55:310
30883217478,1725sleep024639-1kworker/0:1H11:55:310
28643213658,1343sleep328668-21df10:05:433
28643213658,1343sleep328668-21df10:05:433
2858529316,917sleep228144-1kworker/2:1H10:05:332
2858529316,917sleep228144-1kworker/2:1H10:05:332
20357279418,762sleep020435-21memory09:40:360
872277110,744sleep1886-21/usr/sbin/munin12:00:451
10835276320,725sleep210844-21/usr/sbin/munin09:10:382
2061126678,647sleep0191-21jbd2/mmcblk2p2-08:00:190
19069254999,433sleep319080-21apt-get07:55:253
154862354145,149sleep30-21swapper/307:45:153
29740232819,288sleep229744-21latency_hist08:30:162
1466231618,274sleep01583-21grep10:20:460
1466231618,274sleep01583-21grep10:20:460
20333229218,261sleep320351-21grep09:40:353
3057227117,60sleep32863-21latency_hist12:10:163
207592259142,91sleep30-21swapper/311:25:133
25723224859,150sleep30-21swapper/311:40:163
101072237105,24sleep30-21swapper/312:30:433
21531222664,31sleep321582-21processes11:25:423
4640221214,179sleep34643-21cron12:15:133
12309220943,142sleep30-21swapper/309:15:353
10958220682,47sleep311030-21mailstats09:10:433
1339220437,18sleep30-21swapper/312:05:153
10763220161,93sleep310801-21modprobe07:30:133
9837220050,102sleep325884-21systemd-journal10:50:133
22381219815,166sleep022526-21latency_hist11:30:150
23153219569,19sleep30-21swapper/308:06:233
10221219371,51sleep310307-21grep10:50:333
7724218712,143sleep30-21swapper/307:20:163
341621879,168sleep013441-21snmpd10:27:360
3132218728,79sleep13279-21grep08:45:491
3132218728,79sleep13279-21grep08:45:491
23108218069,91sleep322874-21cron09:50:163
3039521768,149sleep30-21swapper/310:10:353
2843321739,25sleep30-21swapper/308:25:283
25903217012,145sleep325982-21sort09:56:543
1312421647,18sleep30-21swapper/307:35:423
27880216325,122sleep327905-21awk11:45:373
2770216315,133sleep32839-21basename07:05:343
23997216057,89sleep324018-21apt-key11:35:153
9321215514,100sleep39361-21grep09:05:383
3074215511,103sleep33224-21unixbench_singl10:25:463
697221547,135sleep37009-21ps12:20:423
19006215013,12sleep30-21swapper/309:35:423
5542214911,75sleep30-21swapper/308:55:163
399021488,67sleep30-21swapper/308:50:273
3179921479,123sleep331836-21fschecks_count10:15:323
10181214224,99sleep210200-21modprobe09:10:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional