You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-09 - 09:08

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 #e, slot #4

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot4s.osadl.org (updated Wed Jul 09, 2025 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3993667995956,2cyclictest75-21kswapd023:06:581
3993663995148,2cyclictest75-21kswapd023:55:030
3993674994843,4cyclictest42963-21latency_hist23:05:013
3993674994741,4cyclictest100596-21latency_hist00:00:013
3993663994541,3cyclictest75-21kswapd023:06:590
3993667994339,3cyclictest4055507-21kworker/u8:0+flush-259:020:10:251
3993667993530,4cyclictest4096686-21kworker/u8:0+flush-259:020:55:221
3993663993531,3cyclictest4154740-21kworker/u8:4+flush-259:022:20:260
3993663993530,3cyclictest4049945-21kworker/u8:1+events_unbound20:30:240
3993669993428,4cyclictest6034-21ntpq22:25:222
3993669993428,4cyclictest48536-21latency_hist23:10:012
3993663993430,3cyclictest43156-21gpgv23:05:010
3993674993328,4cyclictest4149603-21kworker/u8:0+flush-259:023:06:563
3993663993327,4cyclictest4019669-21/usr/sbin/munin19:35:170
3993667993228,3cyclictest4143817-21kworker/u8:3+flush-259:021:50:281
3993667993228,3cyclictest4024628-21kworker/u8:3+flush-259:019:50:261
3993663993227,3cyclictest4040263-21kworker/u8:2+events_unbound20:15:000
3993674993125,4cyclictest84667-21latency_hist23:45:013
3993674992925,3cyclictest84898-21/usr/sbin/munin23:45:143
3993669992924,4cyclictest116109-21latency_hist00:15:002
3993667992926,2cyclictest4149603-21kworker/u8:0+flush-259:022:40:001
3993667992923,4cyclictest4044364-21ntpq19:55:231
3993663992925,3cyclictest95019-21kworker/u8:0+events_unbound00:35:010
3993663992924,4cyclictest83744-21ntpq23:40:230
3993674992824,3cyclictest69242-21kworker/u8:1+flush-259:023:35:193
3993674992824,3cyclictest4075640-21kworker/u8:4+flush-259:020:30:003
3993674992824,3cyclictest4075640-21kworker/u8:4+flush-259:020:29:593
3993669992821,5cyclictest121311-21latency_hist00:20:002
3993674992724,2cyclictest95019-21kworker/u8:0+flush-259:000:35:003
3993674992722,4cyclictest3754036-21systemd-journal22:02:253
3993669992722,4cyclictest4024855-21apt-get19:40:132
3993669992722,3cyclictest22375-21kworker/u8:1+flush-259:022:45:182
3993669992721,4cyclictest4049428-21ntpq20:00:212
3993674992619,5cyclictest3754036-21systemd-journal00:19:593
3993667992620,5cyclictest4054605-21ntpq20:05:221
3993667992619,5cyclictest3754036-21systemd-journal00:05:011
3993663992623,2cyclictest3966719-21kworker/u8:2+events_unbound19:25:150
3993663992622,3cyclictest32632-21kworker/u8:2+flush-259:022:55:250
3993663992621,4cyclictest137138-21kworker/u8:2+events_unbound00:35:160
3993674992521,3cyclictest4024628-21kworker/u8:3+flush-259:020:09:593
3993667992519,5cyclictest4085484-21ntpq20:35:221
3993663992521,3cyclictest4154740-21kworker/u8:4+events_unbound22:10:250
3993663992521,3cyclictest3934505-21kworker/u8:0+flush-259:019:25:010
3993663992519,4cyclictest3000063-21rs:main0
3993663992518,5cyclictest73553-21ntpq23:30:230
3993674992420,3cyclictest4004231-21apt-get19:20:123
3993674992418,4cyclictest3754036-21systemd-journal21:44:253
3993669992421,2cyclictest4085962-21kworker/u8:3+flush-259:021:00:182
3993667992420,3cyclictest22375-21kworker/u8:1+flush-259:023:00:171
3993667992416,6cyclictest3998785-21munin-plugin-st19:15:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional