You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-09 - 13:23

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 #9, slot #8

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: 50 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 highest latencies:
System rack9slot8s.osadl.org (updated Tue Sep 09, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818502010,0irq/46-4a10000030906-21kworker/0:319:08:580
349998156,0cyclictest1498-21munin-node19:14:560
349998156,0cyclictest14228-21ssh00:25:520
349998053,0cyclictest3580-21runrttasks19:25:260
349997751,0cyclictest27333-21munin-run23:44:590
349997659,0cyclictest21741-21ssh23:32:560
349997649,0cyclictest20382-21ssh22:20:250
349997556,0cyclictest18469-21apt-get00:35:540
349997548,0cyclictest1960-21apt00:00:000
349997540,0cyclictest11325-21ssh23:10:320
349997453,0cyclictest13359-21ssh00:24:190
349997449,0cyclictest24146-21sendmail-msp21:19:550
349997441,0cyclictest18058-21sshd21:00:280
349997439,0cyclictest32523-21sshd22:46:310
349997439,0cyclictest19412-21latency_hist21:09:560
349997351,0cyclictest14917-21ssh23:18:200
349997350,0cyclictest31266-21ssh23:53:170
349997348,0cyclictest22750-21sshd22:25:320
349997347,0cyclictest4099-21ssh00:04:330
349997343,0cyclictest23633-21ssh23:36:580
349997338,0cyclictest8577-21munin-run19:59:520
349997336,0cyclictest28968-21ssh23:48:220
349997254,0cyclictest9479-21ssh21:57:220
349997250,0cyclictest5274-21ssh21:48:300
349997249,0cyclictest19121-21ssh23:27:160
349997245,0cyclictest9325-21idleruntime-cro20:04:520
349997245,0cyclictest1442-21latency_hist19:14:540
349997233,0cyclictest29056-21ssh22:39:150
349997157,0cyclictest81850irq/46-4a10000000:19:340
349997148,0cyclictest32129-21ssh21:36:410
349997147,0cyclictest15728-21rm22:10:290
349997145,0cyclictest13448-21ssh22:05:370
349997143,0cyclictest8185-21ssh23:03:580
349997143,0cyclictest10659-21apt-get22:00:150
349997135,0cyclictest31739-21ssh22:44:570
349997134,0cyclictest14496-21sshd20:38:270
349997052,0cyclictest28616-21ssh21:29:240
349997050,0cyclictest17921-21ssh00:33:490
349997050,0cyclictest17108-21ssh23:22:580
349997050,0cyclictest10058-21apt-get20:10:290
349997044,0cyclictest29416-21ssh21:30:560
349997039,0cyclictest18269-21ssh22:15:580
349996954,0cyclictest2101-21ssh21:41:440
349996952,0cyclictest6309-21munin-plugin-st22:59:580
349996947,0cyclictest5969-21ssh00:08:310
349996946,0cyclictest2839-21ssh22:52:280
349996943,0cyclictest5027-21runrttasks19:35:180
349996942,0cyclictest24924-21seq21:21:270
349996847,0cyclictest12417-21sshd20:24:270
349996844,0cyclictest19360-21diskmemload23:06:160
349996838,0cyclictest2625-21runrttasks19:20:100
349996836,0cyclictest19720-21ssh21:10:280
349996834,0cyclictest25225-21ssh22:30:530
349996750,0cyclictest17675-21munin-run20:59:550
349996746,0cyclictest9-21ksoftirqd/021:53:310
349996745,0cyclictest6818-21ssh00:10:110
349996648,0cyclictest10061-21munin-run20:09:530
349996550,0cyclictest7722-21runrttasks19:54:060
349996546,0cyclictest13821-21seq20:33:570
349996447,0cyclictest15685-21runrttasks20:45:510
349996346,0cyclictest12597-21runrttasks20:24:550
349996333,0cyclictest6679-21kworker/u2:319:49:510
349996244,0cyclictest6301-21runrttasks19:44:280
349996244,0cyclictest11738-21munin-run20:19:520
349996241,0cyclictest15463-21apt20:44:530
349996230,0cyclictest16740-21sshd20:53:270
349996141,0cyclictest15173-21snmpd19:34:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional