You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2025-12-10 - 16:08

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 Wed Dec 10, 2025 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1993426517,631sleep319980-21ntpq23:03:063
170625068,483sleep01750-21ntpq23:48:050
170625068,483sleep01750-21ntpq23:48:050
24677248631,437sleep224756-21/usr/sbin/munin19:53:332
16792230921,195sleep316919-21timerwakeupswit22:53:093
1532422709,246sleep315342-21latency_hist21:07:393
17250226916,235sleep117330-21tune2fs21:12:581
3584224121,202sleep13726-21unixbench_singl20:28:161
3584224121,202sleep13726-21unixbench_singl20:28:161
14309224017,206sleep114358-21unin-run22:47:381
13537223640,178sleep3302-21systemd-logind00:27:373
13537223640,178sleep3302-21systemd-logind00:27:373
8458221321,89sleep38614-21unixbench_multi20:43:123
3467220125,160sleep13531-21/usr/sbin/munin22:12:531
1726621965,179sleep00-21swapper/019:31:260
26133219023,67sleep325736-21/usr/sbin/munin23:23:053
26133219023,67sleep325736-21/usr/sbin/munin23:23:053
236321906,173sleep35666-21snmpd22:08:073
1692621859,160sleep00-21swapper/022:53:100
26440218218,51sleep30-21swapper/319:58:303
7076217895,68sleep37161-21mailstats22:23:093
7076217895,68sleep37161-21mailstats22:23:093
32654217862,104sleep332685-21proc_pri20:18:133
32654217862,104sleep332685-21proc_pri20:18:133
6791217442,108sleep36960-21sed18:58:113
12183217318,140sleep112321-21grep19:13:101
22383217132,124sleep322529-21latency_hist19:47:403
12551217114,69sleep312647-21fschecks_time20:57:583
31768216712,81sleep331850-21apt-config23:42:393
3007421647,122sleep330081-21modprobe20:09:373
1658921639,142sleep00-21swapper/021:09:300
12807215411,77sleep312923-21sed22:42:393
3388215325,30sleep30-21swapper/320:28:143
3388215325,30sleep30-21swapper/320:28:143
13159214819,19sleep20-21swapper/222:42:582
18739214711,121sleep218741-21acpi21:17:512
4994214310,117sleep15069-21latency20:33:531
4994214310,117sleep15069-21latency20:33:531
830214045,19sleep30-21swapper/322:03:063
830214045,19sleep30-21swapper/322:03:063
988721399,114sleep30-21swapper/300:13:113
988721399,114sleep30-21swapper/300:13:113
8935213938,86sleep30-21swapper/300:12:393
22425213915,111sleep322493-21latency_hist23:12:393
18107213917,24sleep30-21swapper/321:13:203
23898213512,106sleep023908-21unin-run19:52:380
16924213553,64sleep30-21swapper/321:12:393
1312021337,73sleep313124-21df_inode22:42:553
9888213252,19sleep30-21swapper/322:32:583
5968213168,46sleep30-21swapper/320:37:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional