You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-18 - 06:54

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 #3, slot #3

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
  TQ-Systems
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 rack3slot3s.osadl.org (updated Thu Sep 18, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158840421910,2sleep10-21swapper/123:00:081
1296107214797,37sleep20-21swapper/219:09:262
12960032145100,16sleep10-21swapper/119:08:041
1295866214599,16sleep00-21swapper/019:06:230
1296000214299,34sleep30-21swapper/319:08:023
166895021230,2sleep1321rcuc/123:50:151
1296275994236,4cyclictest1475135-21tail21:45:243
1296275993530,3cyclictest1660226-21/usr/sbin/munin23:45:003
1296275993423,7cyclictest1624932-21grep23:20:283
1296275992924,3cyclictest0-21swapper/300:00:003
1296275992920,6cyclictest1723431-21cut00:25:163
1296275992920,6cyclictest1613009-21cut23:15:143
1296275992622,2cyclictest1353549-21dump-pmu-power20:04:593
1296275992621,3cyclictest1487351-21sed21:55:223
1296275992616,7cyclictest1449489-21cut21:30:193
1296275992519,3cyclictest1446257-21cron21:30:003
1296275992516,6cyclictest1583840-21cut22:55:203
1296275992420,2cyclictest0-21swapper/320:05:233
1296275992417,5cyclictest1328210-21cat19:40:003
1296275992415,6cyclictest1540701-21cut22:30:163
129627599241,17cyclictest943-21runrttasks00:05:143
17194852230,2sleep0221rcuc/000:23:480
129627599238,10cyclictest703-21dbus-daemon22:25:013
129627599234,16cyclictest1-21systemd22:50:013
129627599232,8cyclictest1450312-21kworker/u16:2+rpciod21:36:293
1296275992319,2cyclictest1482344-21latency_hist21:55:013
1296275992319,2cyclictest0-21swapper/321:10:193
1296275992318,2cyclictest1676329-21latency_hist23:55:013
1296275992317,4cyclictest0-21swapper/300:20:003
1296275992316,5cyclictest1503587-21grep22:05:273
1296275992311,7cyclictest1492145-21tr22:00:163
1296275992219,2cyclictest1727560-21cpuspeed_turbos00:30:153
1296275992218,2cyclictest1378535-21grep20:30:013
1296275992217,3cyclictest943-21runrttasks23:05:173
1296275992214,6cyclictest1382522-21grep20:30:193
1296275992214,6cyclictest1317665-21grep19:25:223
129627599221,17cyclictest1522836-21sh22:19:393
14194182210,2sleep20-21swapper/221:10:532
1296275992118,2cyclictest703-21dbus-daemon00:37:133
129627599211,7cyclictest1338165-21runrttasks19:49:433
1296275992117,2cyclictest0-21swapper/322:40:013
1296275992117,2cyclictest0-21swapper/319:20:133
129627599211,6cyclictest1560014-21sh22:40:213
1296275992116,3cyclictest1705629-21apt-key00:15:013
1296275992116,3cyclictest0-21swapper/300:00:223
1296275992113,5cyclictest1434758-21find21:20:223
1296275992113,5cyclictest1434758-21find21:20:213
129627599211,16cyclictest1538376-21sh22:28:413
1296275992110,7cyclictest1605321-21tr23:10:173
129627599209,7cyclictest1647842-21tr23:35:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional