You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-10 - 15:41

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 #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.
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 rack9slot4s (updated Thu Jul 10, 2025 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28749913031237,37cyclictest16915-21munin-run08:00:011
28749912341212,19cyclictest0-21swapper/107:25:131
28739911931169,20cyclictest0-21swapper/007:25:100
25042564517,31sleep00-21swapper/007:22:340
24462464418,31sleep10-21swapper/107:22:011
287399254223,26cyclictest16928-21watchsnmpd08:00:010
1567121370,3sleep00-21swapper/010:20:440
144372880,7sleep00-21swapper/012:00:260
305492750,5sleep00-21swapper/012:50:370
91212710,4sleep041ktimersoftd/010:15:040
153732530,2sleep115374-21sh10:55:051
287499516,25cyclictest0-21swapper/112:04:431
26502430,4sleep1211ktimersoftd/109:35:001
2874994228,11cyclictest22776-21ssh11:02:021
2873994221,12cyclictest8842-21ssh09:40:280
2873994217,7cyclictest3-21ksoftirqd/012:09:010
287399414,5cyclictest1739-21head12:20:310
2873994127,4cyclictest25237-21sshd08:20:210
2873994117,8cyclictest3-21ksoftirqd/009:47:560
2873994018,7cyclictest3-21ksoftirqd/011:49:280
2873994017,8cyclictest3-21ksoftirqd/012:41:450
2873994017,8cyclictest3-21ksoftirqd/011:53:280
237932400,5sleep023791-21irqstats12:10:210
2873993915,12cyclictest6203-21packagekitd10:08:460
2873993816,7cyclictest3-21ksoftirqd/012:49:130
2873993816,7cyclictest3-21ksoftirqd/009:20:490
2873993815,7cyclictest3-21ksoftirqd/011:09:450
142952381,33sleep114308-21sh11:26:421
287499377,15cyclictest40950irq/93-i91509:45:171
2873993719,5cyclictest2104-21swap10:40:300
2873993712,15cyclictest3-21ksoftirqd/008:25:070
279092371,32sleep127920-21sh11:07:311
287499369,5cyclictest40950irq/93-i91511:10:151
2873993621,5cyclictest10954-21idleruntime-cro09:10:010
2873993620,5cyclictest8925-21df11:55:130
2873993620,5cyclictest8925-21df11:55:130
2873993620,5cyclictest18040-21/usr/sbin/munin09:50:190
2873993619,6cyclictest31669-21runrttasks11:10:580
2873993617,10cyclictest0-21swapper/010:35:280
2873993614,7cyclictest3-21ksoftirqd/010:46:290
2873993613,12cyclictest7915-21fschecks_time07:35:170
2873993613,12cyclictest26084-21ssh10:31:520
287399361,22cyclictest14812-21ssh10:54:280
318422351,30sleep131885-21ssh11:45:181
287499355,26cyclictest0-21swapper/112:51:371
287499353,6cyclictest0-21swapper/110:03:241
2874993513,18cyclictest0-21swapper/112:19:221
2873993520,5cyclictest25350-21ssh11:38:440
2873993518,5cyclictest0-21swapper/011:42:190
2873993515,5cyclictest0-21swapper/009:17:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional